JPH10142654A - Flash photographic system for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a satisfactory photographic result by prohibiting the photographing operation of a camera when the focal distance of a photographic optical system is the focal distance corresponding to the area where switching of emitting angle is performed by an emitting angle switching means. SOLUTION: A stroboscopic case 3 is protruded from a camera body in the state where the focal distance of a photographic optical system is situated on the long focus side, and a diffusion lever 11 is retreated into the camera body, and the emitting angle of a flashing device is set to a second emitting angle narrower than a first emitting angle. This angle corresponds to the photographic picture angle on the long focus side of the focal distance of the photographic optical system. When the focal distance of the photographic optical system is changed from short focus side to long focus side, a finder prohibiting section for prohibiting the operation to make the finder magnification constant is provided in a fixed section of the moving operation of a finder optical system, and when the focal distance of the photographic optical system is the focal distance corresponding to the area where switching of emitting angle by an emitting angle switching means is performed, the photographing operation of the camera is prohibited.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flash photography system for a camera, and more particularly to a flash photography system for a camera which irradiates a subject with a light beam emitted from a flash device.

[0002]

2. Description of the Related Art Conventionally, in a camera or the like for taking a photograph, for example, a flash light emitting device for irradiating a main subject with illumination light when taking a photograph in a low luminance environment or the like is provided with a camera body. The one that is built in is generally put to practical use.

On the other hand, in a photographing lens or the like which is a photographing optical system applied to a camera or the like for photographing or the like, a so-called variable magnification operation can be performed by continuously changing the photographing angle of view. A zoom lens and the like are generally put into practical use, and a so-called multifocal camera and the like that can selectively switch a plurality of focal lengths are put into practical use.

As described above, a camera or the like to which a photographic optical system capable of switching the focal length is applied,
For example, in the case of taking a photograph in a low luminance environment where the flash light emitting device is required, in order to make the flash light emitting device emit light efficiently and obtain a better photograph, the irradiation angle of the flash light emitting device is required. Needs to be changed according to the focal length (photographing angle of view) of the photographing optical system when photographing or the like.

Therefore, a camera or the like to which a photographing optical system (zoom lens, multifocal type, etc.) with a variable focal length is applied,
When taking a photograph or the like using a flash light emitting device or the like, adjust the irradiation angle of the flash light emitting device to the focal length of the photographing optical system,
That is, various types that are changed according to the change in the angle of view are proposed and put to practical use.

For example, in a flash photographing system disclosed in Japanese Patent Publication No. 6-80454, a light beam emitted from a flash discharge tube is condensed in front of a reflector by an umbrella and arranged on the front surface of a light emitting unit. The distance between the light-collecting panel and the flash discharge tube is changed in conjunction with the continuous change of the focal length of the photographing optical system. Thus, the irradiation angle of the flash light emitting device can be continuously changed in accordance with the focal length (photographing angle of view) of the photographing optical system, so that more efficient irradiation can be performed. It was made.

A multi-focus strobe (flash light emitting device) disclosed in Japanese Utility Model Laid-Open No. 2-48936 is disclosed.
The built-in camera has a photographing optical system capable of switching a plurality of focal lengths. In a camera in which a flash light emitting device is built in a main body, a front surface of the flash light emitting device is changed according to a change in the focal length of the photographing optical system. By arranging or retracting the diffusion plate in the camera, an irradiation angle corresponding to the focal length of the photographing optical system (photographing angle of view) can be obtained, so that more efficient irradiation can be performed. It was done.

Here, a photographing angle of view due to a change in the focal length of a photographing optical system such as a camera for photographing and the like, and an irradiation angle of the flash light emitting device required at that time (hereinafter, referred to as a necessary irradiation angle). The relationship will be briefly described below with reference to FIG.

In FIG. 33, the photographing angle of view A indicated by a solid line is
When the focal length of the photographing optical system is on the short focal length side, that is, the wide angle (Wid)
e) from the state on the long focal length side, that is, telephoto (Tel
The change of the focal length during the state on the e) side, that is, the change of the photographing angle of view that changes according to the zooming operation is shown.

The required irradiation angle B shown by a solid line in FIG. 33 is such that the focal length of the photographing optical system is a short focus (wide angle; Wid).
The change in the irradiation angle of the flash light emitting device required according to the change in the focal length (zooming operation) from the state on the e) side to the state on the long focal point (telephoto side) is shown.

In FIG. 33, the required irradiation angle B
The symbols C1 and C2 indicated by "O" at both ends of each of them indicate the irradiation angles at the time of switching the irradiation angles of a multifocal flashlight-equipped camera or the like exemplified in Japanese Utility Model Laid-Open No. 2-48936. The irradiation angle C1 is an irradiation angle when the diffusing plate is in front of the flash light emitting device when the focal length of the imaging optical system is on the short focus (wide angle; Wide) side, and the irradiation angle C2 is The irradiation angles when the diffuser is retracted from the front surface of the flash light emitting device when the focal length of the photographing optical system is on the long focus (telephoto side) side are shown.

An irradiation angle C3 indicated by a broken line in FIG. 33 is, as exemplified in Japanese Patent Publication No. 6-80454 or the like, condensing a light beam emitted from a flash light emitting device and irradiating the light beam forward. Of the light beam emitted from the flash light emitting device by changing the distance between the reflecting umbrella and the Fresnel lens for diffusing the light beam collected by the reflecting umbrella according to the focal length of the photographing optical system. The irradiation range, that is, a change in the irradiation angle when the irradiation angle is continuously changed is shown.

[0013]

As shown in FIG. 33,
The required irradiation angle B of the flash light emitting device with respect to the photographing angle of view A according to the focal length of the photographing optical system is set so as to irradiate a slightly wider range than the photographing angle of view in a normal case.

According to the means disclosed in Japanese Patent Publication No. 6-80454, the flash emission required according to the change of the irradiation angle C3 of the flash emission device and the focal length of the photographing optical system. Looking at the required irradiation angle B of the device, it becomes impossible to suppress the diffusion of the light beam emitted from the flash light emitting device toward the long focal point, and the irradiation angle becomes larger than the required irradiation angle B at the long focal point. It can be seen that there is a tendency.

That is, in the change of the irradiation angle by the means disclosed in Japanese Patent Publication No. 6-80454, it is not possible to follow the change of the required irradiation angle with respect to the photographing angle of view, and the irradiation efficiency becomes worse toward the long focal length. There is a problem that it is.

Therefore, in the means disclosed in Japanese Patent Publication No. 6-80454, in order to make the illumination angle close to the required illumination angle B when the focal length of the photographing optical system is on the long focal length side, the diffusing plate is used. In order to further improve the light collecting property of the light beam emitted from the flash light emitting device, it is conceivable to increase the distance between the reflector and the diffusion plate of the flash light emitting device. Then, in order to secure a larger amount of movement of the diffusion plate, more space is required for the flash light emitting device in the camera body and the size of the device itself is increased. However, there is a problem that the manufacturing cost increases as well as the size increases.

Further, according to the means disclosed in Japanese Utility Model Laid-Open No. 2-48936, this is an example applied to a multifocal camera or the like that selectively switches a plurality of focal lengths. No consideration is given to the case where the present invention is applied to a zoom lens or the like in which the focal length is continuously changed.

That is, in the means disclosed in Japanese Utility Model Laid-Open Publication No. 2-48936, the timing of disposing a diffusion plate on the front surface of the flash light emitting device or retracting the diffusion plate depends on the focus of the photographing optical system. When the distance is switched, the operation is performed in a state where the photographing operation is prohibited.For example, when applied to a camera or the like having a photographing optical system in which the focal length of the photographing optical system is continuously changed, Since the photographing operation is always possible even during the zooming operation, the photographing operation may be performed even while the diffusion plate is moving. Therefore, in this case, there is a problem that a state of uneven irradiation occurs when the photographing operation is performed. That is, in FIG. 33, when the diffusion plate of the flash light emitting device is not at the irradiation angle C1 or the irradiation angle C2, irradiation unevenness may occur.

An object of the present invention is to solve the above-mentioned conventional problems and to take a photograph using a flash light emitting device in a camera or the like having a photographing optical system (such as a zoom lens) capable of changing the focal length. An object of the present invention is to provide a camera flash photographing system capable of obtaining a better photographing result by performing more efficient illumination light irradiation on a subject.

[0020]

A flash photographing system for a camera according to the present invention comprises a photographing optical system having a variable focal length, a flash light emitting device, and an irradiation angle of the flash light emitting device. An irradiation angle switching means for switching between at least two angles in accordance with the distance, and a focal length of the imaging optical system corresponding to a region where the irradiation angle is switched by the irradiation angle switching means. And a prohibition unit for prohibiting a photographing operation of the camera.

Further, the photographing optical system whose focal length can be changed, and the irradiation angle is set to a first value according to the focal length of the photographing optical system.
A flash light emitting device that can be switched between an irradiation angle and a second irradiation angle smaller than the first irradiation angle, and a focal length of the imaging optical system corresponding to an irradiation angle switching area in the flash light emitting device. Prohibiting means for prohibiting a photographing operation of the camera when the distance is detected.

The photographing optical system whose focal length can be changed, the flash light emitting device, and the flash irradiation angle of the flash light emitting device according to the focal length of the photographing optical system are set to a first angle.
The irradiation angle switching means switchable between an irradiation angle and a second irradiation angle smaller than the first irradiation angle, and the focal length of the imaging optical system is the focal length at which the irradiation angle switching means operates. In some cases, the apparatus includes a prohibition unit that prohibits a photographing operation of the camera.

With this configuration, the irradiation angle switching means switches the irradiation angle of the flash light emitting device between at least two types of angles according to the focal length of the photographing optical system whose focal length can be changed. At this time, the prohibition unit prohibits the camera from performing a shooting operation when the focal length of the imaging optical system is a focal length corresponding to a region where the irradiation angle is switched by the irradiation angle switching unit.

In the flash light emitting device, the irradiation angle is set between a first irradiation angle and a second irradiation angle smaller than the first irradiation angle according to the focal length of the photographing optical system whose focal length can be changed. Switch. At this time, the prohibiting means prohibits the camera from performing a photographing operation when the focal length of the photographing optical system is the focal length corresponding to the irradiation angle switching area in the flash light emitting device.

The irradiating angle switching means sets the irradiating angle of the flash in the flash light emitting device to a first irradiating angle and the first irradiating angle according to the focal length of the photographing optical system whose focal length can be changed.
Switching is performed between a second irradiation angle smaller than the irradiation angle.
At this time, the prohibiting unit prohibits the camera from performing a photographing operation when the focal length of the photographing optical system is the focal length at which the irradiation angle switching unit operates.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. First, before describing each embodiment of the present invention, the concept of the camera flash photography system of the present invention will be briefly described below with reference to FIGS.

FIG. 1 is a conceptual diagram of a flash photographing system for a camera according to the present invention. In FIG. 1, a photographing angle of view A indicated by a solid line indicates that the focal length of a photographing optical system such as a camera is on the short focal length side, that is, From the wide angle (Wide) side to the long focal length side, that is, telephoto (T
11 shows changes in the focal length (photographing angle of view) when changing to the ele) side.

The required irradiation angle B shown by the solid line in FIG. 1 is obtained when the focal length of the photographing optical system such as a camera changes from the short focal point (wide angle; Wide) side to the long focal point (telephoto side; Tele) side. The change of the required irradiation angle of the flash light emitting device is shown.

The irradiation angle C shown by a solid line in FIG.
Shows the switching timing of the irradiation angle by the flash photography system of the camera of the present invention, and the irradiation angle C3
Indicates that the focal length of the photographing optical system is short focus (wide angle; Wide)
The illumination angle covering the required illumination angle of the flash light emitting device from the position to the vicinity of the standard position (Standard) is shown, and the illumination angle C4 is the standard focal length of the photographing optical system.
The irradiation angle covers the required irradiation angle of the flash light emitting device when the flash light emitting device is located at the long focus (telephoto) position from the rd) position.

As described above, the flash angle is changed in conjunction with the focal length switching operation of a multifocal camera or the like which switches a plurality of focal lengths of an imaging optical system such as a camera. In the case of a light emitting device, the irradiation range tends to be wider than the required irradiation angle corresponding to the focal length at that time, as the focal length becomes longer.

Therefore, in the present invention, as shown by a solid line C (irradiation angles C3 and C4) in FIG. 1, regardless of the focal length variation of the photographing optical system, a given arbitrary focal position (in FIG. 1, Up to the point indicated by the symbol Ca), the irradiation angle C3 covers the required irradiation angle according to the shooting angle of view on the short focus side, and the standard (Standard) position C
In b, the light is switched to the irradiation angle C4 covering the required irradiation angle corresponding to the photographing angle of view at the standard position.

In this case, the arbitrary focal position C
a to the standard position Cb, that is, the irradiation angle of the flash light emitting device is set to at least 2 in accordance with the focal length of the photographing optical system.
During the irradiation angle switching operation performed by the irradiation angle switching means (not shown; formed by a driving means such as a motor, for example) for switching between the various angles,
An irradiation angle switching area (imaging prohibition area D) is provided by a prohibiting means or the like that prohibits a photographing operation of a camera or the like, thereby preventing irradiation unevenness in photographing or the like.

FIG. 2 is a conceptual diagram of a flash photographing system for another camera according to the present invention. In FIG. 2, the photographing angle of view A indicated by a solid line is the same as that of FIG. FIG. 2 shows a change in a shooting angle of view when the focal length of the optical system changes from the short focus side to the long focus side.
The required irradiation angle B indicated by a solid line in FIG. 4 indicates a change in the required irradiation angle of the flash light emitting device when the focal length of the photographing optical system changes from the short focus side to the long focus side.

The irradiation angle C shown by a solid line in FIG.
FIG. 2 conceptually shows the switching timing of the irradiation angle by the flash photographing system of the camera of the present invention, and the state when it changes in conjunction with the photographing angle of view, and the irradiation angle C5 shown by a solid line in FIG. Is an arbitrary focal position where the focal length of the photographing optical system is from the short focal length side (in FIG.
A point indicated by, standard; a position near Standard. 2), and the irradiation angle C6 indicated by a solid line in FIG. 2 indicates that the focal length of the photographing optical system is a standard (Standard) position Cb.
From the focal length on the long focal length side to the focal length,
Each is shown.

As described above, in the case of a flash light emitting device in which the irradiation angle continuously changes in conjunction with a zoom lens or the like in which the focal length of the photographing optical system changes continuously, the change in the irradiation angle is As shown by a broken line in FIG. 2, the longer the focal length, the more the irradiation range tends to be wider than the required irradiation angle corresponding to the focal length at that time.

Therefore, in another system of the present invention, the irradiation angle of the flash light emitting device is linked to the focal length continuously changing from the short focal length side of the focal length of the photographing optical system to the above-mentioned arbitrary focal position Ca. And the irradiation angle of the flash light emitting device is changed from the arbitrary focal position Ca to the standard position Cb.
Is switched by an irradiation angle switching means or the like so that the required irradiation angle can be obtained.

Then, in conjunction with the focal length of the photographing optical system which continuously changes from the standard position Cb to the long focal length,
By changing the irradiation angle of the flash light emitting device continuously as shown by the irradiation angle C6 in FIG. 2, the difference between the irradiation angle on the long focal point side and the corresponding required irradiation angle is reduced, Irradiation is performed more efficiently.

Also in this case, during the irradiation angle switching operation by the irradiation angle switching means of the flash light emitting device between the arbitrary focal position Ca and the standard position Cb, the photographing operation of the camera or the like is performed. Prohibition is performed by a prohibition unit (not shown) or the like, and an irradiation angle switching area (imaging prohibition area D) is provided to prevent irradiation unevenness in photographing or the like.

With this configuration, even when the focal length of the photographing optical system such as a camera is on the long focal length side, irradiation with the flash light emitting device can be performed more efficiently.

FIG. 3, FIG. 4, FIG. 5, FIG. 6, FIG.
FIGS. 3 and 4 show a main part of a flash photographing system for a camera according to a first embodiment of the present invention. FIGS. 3 and 4 show the flash photographing system for a camera according to the first embodiment in a camera body. FIG. 3 is a diagram showing a main part when viewed from the front of a camera having a built-in flash light emitting device, and FIG. 4 is a schematic sectional view of the main part.

FIGS. 5 and 6 are views showing the main parts of the flash photographing system of the camera according to the first embodiment, in which the focal length of the photographing optical system is short (wide angle; Wide).
FIG. 5 is a diagram showing a main part when viewed from the front of the camera at this time, and FIG.
Is a schematic sectional view of a main part thereof.

FIGS. 7 and 8 are views showing a main part of the flash photographing system of the camera according to the first embodiment, wherein the focal length of the photographing optical system is long focal length (telephoto).
FIG. 7 is a diagram showing a main part when viewed from the front of the camera at this time, and FIG.
Is a schematic sectional view of a main part thereof.

The photographing optical system according to the first embodiment can switch between at least two types of focal lengths, and is adapted to be applied to a so-called multifocal camera or the like. .

As shown in FIGS. 3 to 8, the flash photography system of the camera according to the first embodiment is built in a camera body constituted by a front cover 6 and a back cover 7. is there.

That is, the flash light emitting device (strobe) is
A flash discharge tube 1 formed of, for example, a xenon (Xe) discharge tube or the like for emitting flash light; a reflector 2 for condensing a light beam emitted from the flash discharge tube 1 forward;
An optical lens for protecting a light emitting portion including the flash discharge tube 1 and the reflector 2, and for distributing a light beam emitted from the flash discharge tube 1 and collected by the reflector 2, toward a subject. The flash discharge tube 1, the reflector 2, the optical panel 3 and the like are disposed in a strobe case 4 to constitute a unit of a flash light emitting device. I have. And
The strobe case 4 has one end rotatably disposed with respect to a fixing member (not shown) on the camera body side.

A diffusion lever 11 is disposed on the front side of the camera body where the strobe case 4 is arranged. Like the strobe case 4, a fixing member (see FIG. (Not shown), one end of the strobe case 4 is rotatably disposed so that it can be inserted into and removed from the front surface of the optical panel 3 of the strobe case 4. The diffusion lever 11 is integrally formed with a diffusion plate 5 made of an optical element or the like having a diffusion surface for diffusing a light beam emitted from the flash discharge tube 1.

Then, as shown in FIGS. 5 and 6, when the focal length of the photographing optical system is on the short focal length side (wide-angle state), the strobe case 4 constituting the flashlight emitting device is used.
The diffusion lever 11 and the diffusion lever 11 are both configured to protrude above the camera body. In this case, the diffusion plate 5 is arranged at a position covering the front side of the optical panel 3 in the strobe case 4, and the irradiation angle of the flash light emitting device is set to the required irradiation angle ( (First irradiation angle).

On the other hand, as shown in FIGS. 7 and 8, when the focal length of the photographing optical system is on the long focal length side (telephoto state), the flash case 4 projects upward from the camera body, and The diffusion lever 11 is retracted into the camera body, thereby
The irradiation angle of the flash light emitting device is set to a second irradiation angle narrower than the first irradiation angle. And this is
It corresponds to a photographing angle of view on the long focal length side of the focal length of the photographing optical system. In FIGS. 3, 5, and 7, reference numeral 26 denotes a lens barrel constituting the photographing optical system.

On the other hand, a finder (not shown) for observing the photographing visual field and determining the photographing range is adapted to correspond to the photographing angle of view in conjunction with a change in the focal length of the photographing optical system. Is generally put to practical use. In this case, in a conventional camera or the like as shown in FIG. 33, the finder optical system is also configured to move continuously according to a continuous change in the focal length of the photographing optical system. In the present invention, when the focal length of the imaging optical system changes from the short focal length side to the long focal length side, in a certain section of the movement operation of the finder optical system,
A finder prohibited section is provided in which the operation is prohibited by a prohibiting means (not shown) or the like, and the finder magnification is kept constant.

This is because, as described above, the photographing prohibited area D
(See FIGS. 1 and 2) so that the photographing operation can be performed without being conscious of it. Note that, in the viewfinder prohibited section, the shooting prohibited area D
Is desirably set to a range narrower than the finder prohibited section.

The operation of the above-configured flash photography system for the camera according to the first embodiment will be described below.

Here, the change of the irradiation angle of the flash light emitting device performed according to the change of the focal length of the photographing optical system is as described with reference to FIG. That is, FIG.
Is substantially equal to the required irradiation angle when the focal length of the photographing optical system is on the short focal length side, and the irradiation angle C3 is constant until reaching a certain arbitrary focal position Ca. Will be retained. The state at this time is shown in FIG.
FIG. 6 shows a state in which both the flash case 4 and the diffusion lever 11 protrude above the camera body, and a state in which the optical panel 4 is covered by the diffusion plate 5 of the diffusion lever 11. The irradiation angle is defined as a first irradiation angle.

Next, when the focal length of the photographing optical system reaches the above-mentioned arbitrary focal position Ca, the retraction of the diffusion lever 11 into the camera body is started. During the period from the arbitrary focal position Ca to the standard position Cb, that is, between the photographing prohibited areas D, the diffusion lever 11 is completely retracted in the camera body, and the state shown in FIGS. 7 and 8 is obtained.

The irradiation angle of the flash light emitting device in this state is the irradiation angle C4 shown in FIG. 1, which substantially coincides with the required irradiation angle corresponding to the standard position Cb of the focal length of the photographing optical system. The irradiation angle C4 is kept constant until the focal length of the photographing optical system reaches the long focal end.

Next, details of the internal configuration and operation of the flash photography system of the camera according to the first embodiment will be described below.

FIGS. 9 and 10 are views for explaining the structure and operation of the flash case of the flash photographing system of the camera according to the first embodiment. FIG. 4, that is, a state in which the flash case 4 is housed in the camera body.
FIG. 10 shows the state shown in FIGS. 5 and 6, ie, the state in which the flash case 4 projects above the camera body (wide-angle state) when the focal length of the photographing optical system is on the wide-angle side. Is shown.

FIGS. 9 and 10 show only components related to the flash case 4 in order to avoid complication of the drawings. The diffusion lever 11 that moves in conjunction with the flash case 4 is described. Are omitted from the drawings, and the configuration and operation of the diffusion lever 11 will be described later (see FIGS. 11 to 13).

As shown in FIGS. 9 and 10, the flash case 4 has a flash discharge tube 1 and a reflector 2 (not shown in FIGS. 9 and 10). And the like, and the optical panel 3 is disposed on the front side thereof. An arm 4c is formed integrally with the strobe case 4, and is rotatably supported at a fulcrum 4a by a fixing member (not shown) in the camera body.

One end of the flash case 4 is locked to a fixing member (not shown) of the camera body, and the other end of a biasing member 13 formed by a spring or the like, for example. The strobe case 4 is always urged in the clockwise direction in FIG. 9 around the fulcrum 4a. At this time, the strobe case 4 is Fixing member 1
When the flash case 4 is locked, the strobe case 4 is positioned at a predetermined position in the camera body, and the stowed case 4 is stored in the camera body (the state shown in FIG. 9).

On the other hand, in the camera body, in the vicinity of the tip 4b of the arm 4c of the strobe case 4, a rotary lever 15 is rotatable about its support shaft 15a by a fixing member (not shown) of the camera body. It is pivoted on. One end of the rotating lever 15 is fixed to a cam member 15c, which is an arm of the rotating lever 15, at one end of a fixing member (not shown) of the camera body.
The other end of the lock lever 6 is locked so that the rotary lever 15 is always urged clockwise in FIG. 9 around the support shaft 15a.

The tip 15b on the other arm side of the rotary lever 15 is connected to a cam surface of a cam 17 disposed on an outer peripheral surface of a lens barrel 26 and the like constituting a photographic optical system such as a camera. It comes into contact. In this case, FIG.
As shown in FIG. 5, when the flash case 4 is in the stowed state, the tip 15b of the rotary lever 15 comes into contact with the cam surface 17e of the cam 17 so that the rotary lever 15 is pressed by the urging member. 9 to rotate counterclockwise in FIG. 9 to hold the biasing member 16 in a charged state, and at the same time, rotate the rotary lever 15 with its cam portion 15c and the arm of the strobe case 4. The tip 4b of the portion 4c is held in a state where it does not come into contact with each other.

In FIG. 9 and FIG.
Is a photo-reflector (PR) provided for detecting the rotation operation of the cam portion 17;
However, by reading the pattern 18 provided on the cam portion 17 side, the rotation amount of the cam portion 17 is detected.

The structure of the cam 17 will be described below with reference to FIGS. 14 and 15
FIG. 14 is a view showing a schematic configuration of the cam 17, and FIG.
15 shows a schematic perspective view thereof, and FIG. 15 shows a front view thereof.

As described above, the cam 17 is provided with two types of cam portions on, for example, the outer peripheral surface of the lens barrel 26 and the like constituting the photographing optical system of the camera. One of the two types of cam portions, that is, FIG.
4, the cam portion formed by the cam surfaces 17b, 17c, 17e and the like in FIG.
And the other of the two types of cam portions, that is, the cam surfaces 17a, 17d, 17
The cam portion formed by f, 17g, and the like contributes to the operation of the diffusion lever 11 described later.

The operation when the strobe case 4 configured as described above shifts from the stored state to the wide-angle state will be described below.

The operation of moving the flash case 4 from its stored state (the state shown in FIG. 9) to the short focal length side of the focal length of the photographing optical system, for example, turning on the power supply of the camera (O)
The cam 17 moves in the direction of arrow X1 shown in FIG. 9 (counterclockwise in FIG. 9) in accordance with the operation of moving the lens barrel 26 constituting the photographing optical system to the photographing preparation state, for example, by setting the state to N). ). Then, the tip 15b of the rotary lever 15 is always in contact with the cam surface of the cam 17, and the cam surface 17e is
7c. At this time, the rotating lever 1
5 is supported by the urging force of the urging member 16 and its support shaft 15a.
9 in the clockwise direction in FIG.

When the rotary lever 15 rotates clockwise in FIG. 9, the cam portion 15c of the rotary lever 15 is rotated.
Abuts on the tip 4b of the arm 4c of the flash case 4,
By pressing this, the strobe case 4 is rotated about its fulcrum 4a in the counterclockwise direction in FIG. 9 (the direction of the arrow X2 shown in FIG. 9). Thus, the strobe case 4 shifts to a state of protruding above the camera body, that is, a wide-angle state (a state shown in FIG. 10). The distal end 4b of the arm 4c of the flash case 4 abuts against a stopper 27, which is a fixing member in the camera body, thereby positioning the flash case 4 in a wide-angle state, and setting the wide angle of the flash case 4 to a wide angle. The state will be maintained.

FIGS. 11, 12 and 13 are views for explaining the structure and operation of the flash photographing system of the camera according to the first embodiment. FIG. 7 is a diagram illustrating an operation of the diffusion lever 11 when the diffusion lever 11 is in a wide angle state protruding upward.

FIG. 11 shows a state in which the diffusion lever 11 is stored in the state shown in FIG. 10 (a state in which the strobe case 4 is protruding), and FIG. The front side of the strobe case 4 is shown projecting from the camera body (wide-angle side state). FIG. 13 is a diagram showing an operation when the diffusion lever 11 shifts from a wide-angle state to a telephoto state.

As described above, when the diffusion lever 11 is in its wide angle state, the flash case 4
The diffusion plate 5 and the like are integrally formed at a position corresponding to the front side of the optical panel 3. The diffusion lever 11 has an arm 11 c integrally formed similarly to the flash case 4. At its fulcrum 11a, it is rotatably supported by a fixing member (not shown) in the camera body.

One end of the diffusion lever 11 is locked to a fixing member (not shown) of the camera body, and the urging member 2 formed by a spring or the like, for example.
The other end of the lever 2 is locked, whereby the diffusion lever 11 is always urged clockwise in FIG. 11 around the fulcrum 11a.

On the other hand, in the camera body, in the vicinity of the distal end 11b of the arm 11c of the diffusion lever 11, a rotating lever 23 is rotatable about its support shaft 23a by a fixing member (not shown) of the camera body. It is pivoted on. On one side of the cam portion 23c, which is one arm of the rotary lever 23, one end thereof is locked by a fixing member of the camera body. For example, an urging member 24 formed by a spring member or the like is locked. Thus, the rotary lever 23 is always urged counterclockwise in FIG.

At this time, the cam portion 2 of the rotary lever 23
3c and the tip 11 of the arm 11c of the diffusion lever 11
b. Since the urging force of the urging member 24 is set to be larger than the urging force of the urging member 22, the diffusion lever 11
The stored state (the state shown in FIG. 11) of the camera is held at a position where the camera is locked to the fixing member 21 in the camera body.

The tip 23b on the other arm side of the rotary lever 23 is provided on the cam surface of the cam 17 disposed on the outer peripheral surface of the lens barrel 26 and the like constituting a photographic optical system such as a camera. As shown in FIG. 11, when the diffusion lever 11 is in the housed state, as shown in FIG.
The tip 23b of the rotary lever 23 does not come into contact with the cam surface of the cam 17.

The operation of the thus constructed diffusion lever 11 when shifting from the stowed state to the wide-angle state will be described below. As described above, the operation of the flash case 4 moving from its stored state (the state shown in FIG. 9) to the short focal length side of the focal length of the photographing optical system, for example,
After the power of the camera is turned on (ON) or the like, the camera body is projected above the camera body (the state shown in FIG. 10), and then the lens barrel 26 constituting the shooting optical system is ready for shooting. With the operation of moving to the state, the cam 17 rotates counterclockwise in FIG. Then, the tip 23b of the rotating lever 23 comes into contact with the cam surface 17f of the cam 17 and shifts to the cam surface 17d. At this time, the rotation lever 23 rotates clockwise in FIG. 11 around the support shaft 23a against the urging force of the urging member 24.

When the rotary lever 23 rotates clockwise in FIG. 11, the cam portion 23 of the rotary lever 23 is rotated.
Since c is in contact with the tip 11 b of the arm 11 c of the diffusion lever 11, it is pressed by the urging force of the urging member 22. As a result, the diffusion lever 11 rotates counterclockwise in FIG. 11 around the fulcrum 11a. Thereby, the diffusion lever 11
Shifts to a wide-angle state protruding above the camera body (state shown in FIG. 12). Then, the diffusion plate 5 of the diffusion lever 11 is disposed at a position corresponding to the front surface of the optical panel 3 of the strobe case 4. At this time, the flash light emitting device has the first irradiation angle corresponding to the wide-angle state.

Next, the operation of the diffusion lever 11 when shifting from the wide-angle state to the telephoto state will be described below. As shown in FIG. 13, the cam 17 further rotates, and the tip 23b of the rotation lever 23 is
The transition is made while abutting on the cam surfaces 17d and 17g. At this time, the rotating lever 23 is rotated counterclockwise in FIG. 11 around the support shaft 23a by the urging force of the urging member 24. As a result, the cam portion 23c of the rotation lever 23 is connected to the tip portion 11c of the arm portion 11c of the diffusion lever 11.
13b, the diffusion lever 11 is rotated clockwise in FIG. 13 against the urging force of the urging member 22 about the support shaft 11a as the center of rotation. And the diffusion lever 11
By contacting the fixed member 21 in the camera body, positioning in the stored state is performed, and the telephoto state is maintained. At this time, the flash light emitting device performs the second irradiation corresponding to the telephoto state. Angle.
Note that, even in this state, the flash case 4
The cam surface 17c of the cam 17 maintains a state of protruding above the camera body.

As described above, in the first embodiment, the flash light emitting device is used by a camera (multi-focus camera) having a photographing optical system capable of switching to at least two kinds of focal lengths. In the case of taking a picture, more efficient irradiation can be carried out, so that a better picture taking result can be obtained.

Further, when the focal length is switched, an irradiation angle switching area (imaging prohibition area D) is provided, so that irradiation unevenness and the like can be prevented. Thereby, a better photographing result can be obtained.

In the above-described first embodiment, the cam 17 is arranged on the outer peripheral surface of a lens barrel constituting a photographic optical system, for example. As shown in FIG.
A cam 27 that performs the same operation as that described above is disposed in the camera body, and this cam 27 is connected to the lens barrel 2 that constitutes a photographic optical system such as a camera via a gear train or the like.
6 and so on.
The same applies to the case where the cam is directly driven by an actuator such as a drive motor.

The rotation lever 15 shown in FIGS. 9 and 10 and the rotation lever 23 shown in FIGS. 11, 12 and 13 may be arranged so as to be at the same center of rotation.

FIG. 17, FIG. 18, FIG. 19, FIG. 20, FIG.
FIGS. 1 and 22 are views showing a main part of a flash photography system for a camera according to a second embodiment of the present invention.
FIG. 8 shows a state in which the flash photography system of the camera according to the second embodiment is housed in the camera body.
7 is a diagram showing a main part when viewed from the front of a camera having a built-in flash light emitting device, and FIG. 18 is a schematic sectional view of the main part.

FIGS. 19 and 20 are views showing a main part of a flash photographing system of the camera according to the second embodiment, in which the focal length of the photographing optical system is short focus (wide angle; Wid).
FIG. 19 is a diagram showing a state when the camera is on the side e), FIG. 19 is a diagram showing a main part when viewed from the front of the camera at this time, and FIG. 20 is a schematic sectional view of the main part.

FIGS. 21 and 22 are views showing the main parts of a flash photographing system for a camera according to the second embodiment, wherein the focal length of the photographing optical system is a long focal length (telephoto; Tel).
FIG. 21 is a diagram showing a state when the camera is on the side e), FIG. 21 is a diagram showing a main part when viewed from the front of the camera at this time, and FIG. 22 is a schematic sectional view of the main part.

As shown in FIGS. 17 to 22, the flash photographing system of the camera according to the second embodiment is the same as the first embodiment.
In the same manner as in the first embodiment, it is built in a camera body constituted by a front cover 6A and a rear cover 7A.

In the camera according to the second embodiment, a so-called zoom lens or the like capable of continuously changing a focal length is applied as a photographing optical system. As described with reference to FIG. 2, the strobe irradiation angle that changes in conjunction with the change in the focal length changes from the irradiation angle C5 on the short focal length side to the irradiation angle C6 on the long focal length side. An imaging prohibited area D) is provided.

The flash light emitting device includes a flash discharge tube 1A for emitting a flash, a reflector 2A for condensing light emitted from the flash discharge tube 1A forward, and a flash discharge tube 1A and a reflector 2A. Protects the flash discharge tube 1A
The luminous flux emitted by the reflector 2A and collected by the reflector 2A,
The flash discharge tube 1A, the reflector 2A, the optical panel 3A, and the like are arranged in a strobe case 4A to constitute a unit of a flash light emitting device. doing. And
The strobe case 4A has one end rotatably disposed with respect to a fixing member (not shown) on the camera body side.

A diffusion lever 11A is disposed on the front side of the camera body where the strobe case 4A is disposed, as in the first embodiment. It is slidably arranged in the vertical direction of the camera body. And this diffusion lever 1
A diffusion plate 5A and the like having a diffusion surface for diffusing a light beam emitted from the flash discharge tube 1A are integrally formed with 1A.

As shown in FIGS. 19 and 20, when the focal length of the photographing optical system is on the short focal length side (wide-angle state), the strobe case 4A constituting the flash light emitting device is used.
Are projected above the camera body about the support shaft 4Aa, and the diffusion lever 11
A slides toward the top of the camera body,
It protrudes above the camera body. In this case, the diffusion plate 5 is arranged at a position covering the front side of the optical panel 3 in the strobe case 4, and the irradiation angle of the flash light emitting device is set to the required irradiation angle on the short focus side. (First irradiation angle).

On the other hand, as shown in FIGS. 21 and 22, when the focal length of the photographing optical system is on the long focal length side (telephoto state), the flash case 4A projects upward from the camera body, and The diffusion lever 11A is retracted into the camera body, whereby the irradiation angle of the flash light emitting device is set to a second irradiation angle smaller than the first irradiation angle, It corresponds to a photographing angle of view on the long focal length side of the focal length of the photographing optical system. In FIGS. 17, 19, and 21, reference numeral 26 denotes a lens barrel that forms a photographic optical system.

The operation of the flash photography system for a camera according to the second embodiment having the above-described configuration is basically the same as that of the first embodiment, and therefore, the details thereof are omitted. This will be briefly described below.

That is, as shown in FIGS. 17 and 18, when the flash light emitting device is housed in the camera body, for example, when the power supply of the camera is turned on, the photographing optical system is turned on. The focal length moves to the short focal length side. Accordingly, the state shifts to the wide-angle state shown in FIGS. 19 and 20, ie, the state in which both the strobe unit 4A and the diffusion lever 11A protrude upward from the camera body.

In this state, when the photographing optical system of the camera is zoomed toward the long focal length side, at a given focal length (focal position Ca shown in FIG. 2), the camera is turned off by a prohibiting means (not shown) or the like. Accordingly, the photographing is prohibited until reaching the standard position (the focal position Cb shown in FIG. 2). The diffusion lever 11A is retracted into the camera body by the irradiation angle switching means or the like while in the photographing prohibited area D. Thereafter, FIGS.
The telephoto state shown in FIG.

As described above, in the second embodiment, the photographing is performed by using the flash light emitting device by the camera having the photographing optical system (zoom lens or the like) capable of continuously changing the focal length. The same effects as in the above-described first embodiment can be obtained even when shooting.

FIGS. 23, 24 and 25 show a third embodiment of the present invention.
FIG. 23 and FIG. 24 are views showing a main part of a flash photographing system of the camera according to the third embodiment. FIGS. 23 and 24 show that the photographing optical system of the camera according to the third embodiment has a short focal length (wide angle; Wi).
It is a figure which shows the state at the time of de) side. FIG.
FIG. 24 is a diagram showing a main part when viewed from the front of a camera having a built-in flash light emitting device, and FIG. 24 is a schematic sectional view of the main part. FIG. 25 is a schematic cross-sectional view of main parts showing a state where the focal length of the imaging optical system of the camera according to the third embodiment is on the long focus (telephoto side) side.

Note that in the third embodiment,
Unlike the flash light emitting devices in the first and second embodiments described above, the strobe unit is always housed and fixed in the camera body, and the strobe unit and the like are operated in a protruding operation or the like. This is an example of a case in which is not performed.

That is, as shown in FIGS. 23 to 25, the flash photographing system of the camera according to the third embodiment includes a camera body constituted by a front cover 6B, a rear cover 7B, a main unit 8, and the like. It is built-in.

The flash light emitting device (strobe unit)
A flash discharge tube 1B that emits a flash and a reflector 2B that collects a light beam emitted from the flash discharge tube 1B forward are fixed to the main unit 8.
B and an optical panel 3B disposed on the front side of the reflector 2B and distributing a light beam emitted from the flash discharge tube 1B and condensed by the reflector 2B toward a subject. The optical panel 3B is slidably disposed in the front-rear direction of the camera on the main unit 8, whereby the illuminating angle of the light beam emitted to the front side of the camera by the flash discharge tube 1B and the reflector 2B is provided. To
It can be changed in conjunction with the focal length of the photographing optical system.

A diffusion lever 11B is disposed on the front side of the camera body where the strobe unit is disposed. The diffusion lever 11B is slidably disposed vertically in the camera body. I have. The diffusion lever 11B is integrally formed with a diffusion plate 5B having a diffusion surface for diffusing a light beam emitted from the flash discharge tube 1B, and the diffusion plate 5B is in a wide-angle state (FIG. 24).
(The state shown in FIG. 3), it is arranged at a position facing the optical panel 3B.

On the front cover 6B forming the camera body, a protection panel 9 made of, for example, a transparent plastic material is provided at a position facing the optical panel 3B. Is transmitted, so that a light beam emitted from the flash light emitting device is emitted outside the camera body.

As described above, in the state where the focal length of the photographing optical system is on the short focal length side (wide-angle state; state shown in FIG. 24), the optical panel 3B of the strobe unit constituting the flash light emitting device Diffusion lever 1 on the front side of
1B is arranged, and the irradiation angle of the flash light emitting device is set to be the required irradiation angle on the short focus side (first irradiation angle).

On the other hand, as shown in FIG. 25, when the focal length of the photographing optical system is on the long focal length side (telephoto state), the extension lever 11B is moved from the front side of the optical panel 3B of the strobe unit to the camera body. It is designed to retreat downward inside. Thereby, the irradiation angle of the flash light emitting device is set to be the second irradiation angle narrower than the first irradiation angle, and corresponds to the photographing angle of view on the long focal length side of the focal length of the photographing optical system. ing. In FIG. 23, reference numeral 26 denotes a lens barrel constituting the photographing optical system.

The operation of the flash photography system for a camera according to the third embodiment configured as described above will be briefly described below.

For example, when the power of the camera is turned on and the focal length of the photographing optical system is on the short focal length side, the wide angle state shown in FIG. 24, that is, the optical panel 3B of the strobe unit is turned off. The state where the diffusion lever 11B is arranged on the front side is maintained. In this state, when the photographing optical system of the camera is zoomed toward the long focal length side, the optical panel 3B moves on the main unit 8 in conjunction with the zooming, and emits light corresponding to the focal length of the photographing optical system. Secure corners. Then, at an arbitrary focal length (focal position Ca shown in FIG. 2), the camera is set in the photographing prohibited state by the prohibiting means (not shown) until reaching the standard position (focal position Cb shown in FIG. 2). While in the shooting prohibited area D, the diffusion lever 11B is retracted from the front side of the optical panel 3B by the irradiation angle switching means or the like in the camera body, whereby the telescopic state shown in FIG. With the movement of 3B, as shown by the irradiation angle C6 in FIG. 2, the irradiation angle corresponding to the focal length of the imaging optical system is secured.

As described above, also in the third embodiment, the same effects as in the above-described first embodiment can be obtained, and the operation can be performed without projecting the strobe unit from inside the camera body. Thus, it is possible to contribute to downsizing when the camera is used.

Note that the strobe unit and the like are not limited to the above-described example, and the same applies when the strobe unit is fixed to the front cover 6B forming the camera body. Also,
The protection panel 9 may be arranged as needed.

Next, a flash photography system for a camera according to a fourth embodiment of the present invention will be described below.

FIGS. 26 and 27 are views showing the main parts of a flash photographing system for a camera according to a fourth embodiment of the present invention. FIG. FIG. 3 is a schematic cross-sectional view of a main part showing a state where the focal length of the optical system is on the short focus (wide angle; Wide) side. FIG.
FIG. 10 is a schematic cross-sectional view of a principal part showing a state in which the focal length of a photographic optical system of the camera according to the third embodiment is on the long focus (telephoto side) side. Note that a front view showing a main part when viewed from the front of the camera in which the flashlight emitting device is built is the same as FIG. 23, and therefore, reference is made thereto, and illustration thereof is omitted here. .

As shown in FIGS. 26 and 27, the flash photographing system for a camera according to the fourth embodiment is similar to the above-described third embodiment.
Front cover 6C and back cover 7C as in the embodiment.
And a camera unit constituted by a camera unit 8C and the like.

The above-mentioned flash light emitting device (strobe unit)
In the main unit 8C, a flash discharge tube 1C that emits a flash and a reflector 2C that collects a light beam emitted from the flash discharge tube 1C forward are slidably arranged in the front-rear direction of the camera. On the front side of the flash discharge tube 1C and the reflector 2C, an optical panel 3C for distributing a light beam emitted from the flash discharge tube 1C and condensed by the reflector 2C toward a subject is provided on the main unit 8C. Is fixed and arranged.

That is, by changing the distance between the flash discharge tube 1C and the reflector 2C with respect to the optical panel 3C, the irradiation angle of the light beam irradiated on the front side of the camera is changed to the focal length of the photographing optical system. It can be changed in conjunction with it.

Further, the above-described third flash unit is disposed on the front side of the camera body where the flash unit is disposed.
Similarly to the embodiment, a diffusion lever 11C is provided, and is slidably provided in the camera body in the up-down direction. The diffusion lever 11C is integrally formed with a diffusion plate 5C having a diffusion surface for diffusing a light beam emitted from the flash discharge tube 1C, and the diffusion plate 5C is in a wide-angle state (FIG. 26). (The state shown in FIG. 3), it is arranged at a position facing the optical panel 3C.

On the front cover 6C forming the camera body, a protection panel 9C made of, for example, a transparent plastic material is disposed at a position facing the optical panel 3C. Is transmitted, so that a light beam emitted from the flash light emitting device is emitted outside the camera body.

As shown in FIG. 26, when the focal length of the photographing optical system is on the short focal length side (wide angle state), the light is diffused on the front side of the optical panel 3B of the strobe unit constituting the flash light emitting device. The lever 11B is arranged, and the irradiation angle of the flash light emitting device is set to be the required irradiation angle on the short focal length side (first irradiation angle).

On the other hand, as shown in FIG. 27, when the focal length of the photographing optical system is on the long focal length side (telephoto state), the extension lever 11C is moved from the front side of the optical panel 3C of the strobe unit to the camera body. It is designed to retreat downward inside. Thus, the irradiation angle of the flash light emitting device is set to be the second irradiation angle narrower than the first irradiation angle, and corresponds to the photographing angle of view on the long focal length side of the focal length of the photographing optical system. I have. The operation of the flash photography system for a camera according to the fourth embodiment configured as described above will be briefly described below.

For example, when the power of the camera is turned on and the focal length of the photographing optical system is on the short focal length side, the flash discharge in the wide angle state shown in FIG. 26, that is, in FIG. From the state in which the tube 1C and the reflector 2C are shown by solid lines, the flash discharge tube 1C and the reflector 2C are placed on the main unit 8 in conjunction with the zooming operation toward the long focal point side of the photographing optical system of the camera. To secure an irradiation angle corresponding to the focal length of the photographing optical system. And
Up to a certain focal length, that is, the position indicated by X1 in FIG. 26 (the position indicated by the dotted line for the flash discharge tube 1C and the reflector 2C, the focal position Ca in FIG. 2), the optical panel 3B Diffusion lever 11C on front side
Is maintained.

At this arbitrary position (position indicated by X1 in FIG. 26), the camera is moved to a standard position (position indicated by X2 in FIG. 27) by a prohibiting means (not shown) or the like. The position indicated by the solid line of the reflector 2C, and the photographing is prohibited until reaching the focal position Cb) shown in FIG. While in the photographing prohibited area D, the diffusion lever 11C is retracted from the front side of the optical panel 3C by an irradiation angle switching means or the like in the camera body,
As a result, the telephoto state shown in FIG. 27 is established, and the irradiation angle corresponding to the focal length of the imaging optical system is secured as shown by the irradiation angle C6 in FIG. 2 with the movement of the flash discharge tube 1C and the reflector 2C. The Rukoto.

As described above, in the above-described fourth embodiment, a camera having a photographing optical system (zoom lens or the like) capable of continuously changing the focal length is used for photographing using a flash light emitting device. Even in the case of photographing, the same effects as those of the above-described second and third embodiments can be obtained.

The present invention is not limited to the above example, and the optical panel 3C may be mounted not on the main unit 8C but on the front cover 6C side. Also, the protection panel 9C may be arranged as needed.

Also, instead of moving the flash discharge tube 1C and the reflector 2C simultaneously, the optical panel 3C is made to have no light distribution effect, and only the flash discharge tube 1C is set to the focal length of the photographing optical system. You may make it move according to it.

Next, as a photographing optical system of a camera or the like, for example, a pop-up mechanism of a flash light emitting device in a camera to which a so-called zoom lens or the like capable of continuously changing a focal length is applied. An embodiment to which is applied will be described below.

FIGS. 28 and 29 are views showing the storage state of the flash light emitting device in the flash photographing system of the present invention. FIG. 28 is a schematic structural view of a main part when viewed from the front side. FIG. 29 shows a schematic sectional view of the main part.

FIGS. 30 and 31 are views showing the setting state of the flash light emitting device. FIG. 30 is a schematic diagram showing the essential parts when viewed from the front side, and FIG. FIG. FIG. 32 is a schematic sectional view taken along line AA in FIG.

As shown in FIGS. 28 to 31, in this flash light emitting device (flash unit), a flash discharge tube 1 is fixed to a reflector 2, and the flash discharge tube 1 and the reflector 2 are each a flash. It is fixed to case 4. On the front side of the flash discharge tube 1 and the reflecting umbrella 2, an optical system for protecting them and distributing a light beam emitted from the flash discharging tube 1 and collected by the reflecting umbrella 2 toward a subject. The panel 3 is fixedly disposed on the strobe case 4. The flash light emitting device (flash unit) is arranged in a camera body formed by the front cover 6, the back cover 7, and the like.

One end 31b of a strobe lever 31, which is a rotating member, is rotatably attached to the strobe case 4, and the strobe lever 31 is attached to its support shaft 3.
It is arranged rotatably around 1a. Similarly, in the middle of the flash case 4, one end 32b of a flash lever 32, which is a rotating member, is rotatably mounted, and the flash lever 32 is rotatable about its support shaft 32a. Are located in

A drive lever 33 is provided on the strobe lever 31 so as to be rotatable about its support shaft 31a. The drive lever 33 is provided with an urging member 34 formed by a spring or the like. Is locked, and the other end of the biasing member 34 is locked to a fixing member (not shown) of the camera body. Thus, the drive lever 33 is always biased in the counterclockwise direction in FIG.

On the other hand, a drive lever 41 is disposed on the strobe lever 32 so as to be rotatable around its support shaft 32a. The drive lever 41 has one end 41b.
, A connecting rod 42 is disposed so as to be rotatable around the one end 41b. And this connecting rod 4
The other end of 2 is connected to the other end 33b of the drive lever 33 (not shown).

The other end 33b of the drive lever 33
, A lever 39 is rotatably disposed on a fixing member (not shown) of the camera body about its support shaft 39c. To the camera body fixing member (not shown)
Urging member 37 formed by a spring or the like,
Are locked so that it is always urged clockwise in FIG.

Then, the other end 39a of the lever 39
Abuts on a cam surface of a cam 38 that rotates in association with a change in the focal length of the photographing optical system, thereby holding the lever 39 with the urging member 34,
Or they are open.

Note that the strobe levers 31, 32 are
The flash case 4 is arranged below the flash discharge tube.

On the other hand, as shown in FIG. 32, a lead wire 36 which is a transmission line for transmitting electric energy or the like from a power supply battery or the like to the flash tube 1 is formed of a hollow member from the camera body side. The light enters the strobe case 4 through the strobe lever 31 and is soldered to the flash discharge tube 1. Also, the lead wire may be passed through the throat lever 32 similarly to the above-mentioned strobe lever 31.

This is a process performed on the lead wire 36 and the like to obtain, for example, a dustproof and waterproof effect. In addition, as described above, the lead wire to which a high voltage is supplied by the flash light emitting device is applied. By arranging 36 and the like inside the mechanism, consideration is also given to ensuring the safety of a user such as a camera.

On the other hand, the shafts 31a, 31a, etc. can be dust-proofed and waterproofed by applying O-rings 34, 35, which are dust-proof and waterproof members formed of, for example, rubber members. Conceivable. Thereby, it is possible to obtain an effective dustproof and waterproof effect for the flash light emitting device.

The operation of the above-described flash light emitting device will be briefly described below. First, in a state in which the flash light emitting device is housed in the camera body (a state shown in FIG. 28), the cam surface 38a of the cam 38 comes into contact with the other end 39a of the lever 39, and the lever 39 While rotating clockwise in FIG. 28 against the urging force of the member 37, the urging member 37 is charged,
It is held in this state. At this time, the other end 33b of the drive lever 33 and one arm 39 of the lever 39
b, so that the drive lever 33 is not in contact with the drive shaft 33 by the urging force of the urging member 34.
A turning force in the counterclockwise direction about a is working. Since the strobe lever 31 and the drive lever 33 are fixed on the support shaft 31a, the rotational force is transmitted to the strobe lever 31.
The one end of the strobe case 4 is held in the stowed case 4 by abutting against a stopper member 40, which is a fixing member disposed on the camera body side.

Next, as shown in FIG. 30, in a state where the flash light emitting device is popped up, that is, in a set state, the cam 38 is rotated in conjunction with the movement of the focal length of the photographing optical system, so that the lever is moved. The other arm 39a of the 39 is the cam 3
No. 8 moves from the cam surface 38a to the cam surface 38b, and the other arm 39a does not come into contact with the cam surface 38c. Then, the lever 39 rotates counterclockwise in FIG. 30 by the urging force of the urging member 37, and the one arm 39b of the lever 39 comes into contact with the other end 33b of the drive lever 33. Thus, the rotational force is transmitted to the drive lever 33. In this case, the urging member 34
Is set to be smaller than the urging force of the urging member 37, so that the drive lever 33 can move its support shaft 31a.
30 in the clockwise direction in FIG. 30, comes into contact with the stopper member 40 in the camera body, the rotation operation ends, and this state is maintained.

Since the strobe lever 31 is fixed to the drive lever 33 and its support shaft 31a, the rotational power of the drive lever 33 is also transmitted to the strobe lever 31. The driving lever 33 is connected to the driving lever 41 by a connecting rod 42.
Since the strobe lever 32 is fixed to the support shaft 32a, the rotational power of the drive lever 33 is also transmitted to the strobe lever 32. As a result, the flash case 4 is maintained in the set state.

As described above, the rotating member provided in the result report of the flash light emitting device and performing the setting operation (set operation) of the flash light emitting device is directed in a direction in which the interval between the flash light emitting device and the external structural member of the camera body is increased. It is designed to rotate.

In this strobe setting state,
The flash case 4 is not completely exposed to the outside of the camera body, but is covered within the camera body when a part of the lower side of the flash case 4 is viewed from the front of the camera. It has an overlapping portion in the direction. This is provided, for example, to protect the pop-up mechanism of the strobe case 4 against abnormal situations such as when an unexpected external force or the like is applied to the strobe case 4 protruding outside the camera body. .

Further, the pop-up mechanism in FIGS. 28 to 31 can be applied to the operating mechanism of the diffusion lever in each of the first to fourth embodiments described above.

[Supplementary Notes] (1) A photographing optical system whose focal length can be changed, a flash light emitting device, and an irradiation angle of the flash light emitting device can be set to at least two types of angles according to the focal length of the photographing optical system. When the focal length of the irradiation angle switching means for switching between the two and the photographing optical system is a focal length corresponding to a region where the irradiation angle is switched by the irradiation angle switching means, the photographing operation of the camera is prohibited. Flash photography system for a camera having a prohibition unit.

(2) A photographing optical system whose focal length can be continuously changed, a flash light emitting device, and an irradiation angle of the flash light emitting device are set to at least two in accordance with the focal length of the photographing optical system.
The irradiation angle switching means for switching between the different angles, and the focal length of the camera, when the focal length of the photographing optical system is a focal length corresponding to a region where the irradiation angle is switched by the irradiation angle switching means. A flash photography system for a camera, comprising: a prohibition unit that prohibits a stop of a distance changing operation.

(3) An imaging optical system whose focal length can be changed, and an irradiation angle corresponding to a first irradiation angle and a second irradiation angle smaller than the first irradiation angle according to the focal length of the above-mentioned imaging optical system. A flash light emitting device that can be switched in-between, and prohibiting means for prohibiting a photographing operation of the camera when the focal length of the photographing optical system is a focal length corresponding to an irradiation angle switching region in the flash light emitting device. , A camera flash photography system.

(4) The photographing optical system whose focal length can be continuously changed, and the irradiation angle according to the focal length of the photographing optical system, the first irradiation angle, and the second irradiation angle smaller than the first irradiation angle.
If the flash light emitting device that can be switched between the irradiation angle and the focal length of the imaging optical system is the focal length corresponding to the irradiation angle switching area in the flash light emitting device,
A flash photography system for a camera, comprising: a prohibition unit for prohibiting a stop of a focal length changing operation of the camera.

(5) According to the photographing optical system whose focal length can be changed, the flash light emitting device, and the focal length of the photographing optical system, the flash irradiation angle of the flash light emitting device is set to a first angle.
The irradiation angle switching means switchable between an irradiation angle and a second irradiation angle smaller than the first irradiation angle, and the focal length of the imaging optical system is the focal length at which the irradiation angle switching means operates. In this case, a flash photography system for a camera, comprising: a prohibition unit for prohibiting a photography operation of the camera.

(6) The photographing optical system whose focal length can be continuously changed, the flash light emitting device, and the flash light emitting angle of the flash light emitting device according to the focal length of the photographing optical system are set to the first irradiation angle. Irradiation angle switching means switchable between a second irradiation angle narrower than the first irradiation angle,
A flash photography system for a camera, comprising: a prohibition unit for prohibiting a stop of a focal length changing operation of the camera when the focal length of the imaging optical system is a focal length at which the irradiation angle switching unit operates.

(7) In the flash photography system for a camera according to any one of appendixes 1, 2, 3, 4, 5 and 6, the switching of the irradiation angle of the flash light emitting device is performed before the flash light emitting surface. It is performed by an optical element that can be inserted and removed.

(8) In the camera flash photography system described in Appendix 7, the optical element is a diffusion plate.

(9) In the flash photographing system for a camera described in Supplementary Note 8, when the photographing optical system is changed from the housed state to the photographable state, the focal length is limited to the minimum, and the diffusion plate is limited. Is in a state of being inserted before the flash light emitting surface of the flash light emitting device in advance.

(10) In the flash photographing system for a camera according to any one of Supplementary Notes 1, 2, 3, 4, 5 and 6, the flashlight emitting device includes a flash light emitting tube and a reflector. And an optical lens provided on the subject side of the light emitting unit, and the irradiation angle switching means changes the irradiation angle by changing the distance between the light emitting unit and the optical lens.

(11) In the flash photography system for a camera according to any one of Supplementary Note 1, 3, and 5, in the irradiation angle switching area where the operation of the camera is prohibited, the zooming operation of the finder optical system is performed. Ban.

(12) In the flash photography system for a camera according to any one of Supplementary Note 2, 4, and 6, in the irradiation angle switching area where the stop of the focal length changing operation is prohibited, the finder optical system Prohibit stopping the zoom operation.

(13) In the flash photography system for a camera according to any one of Supplementary Note 1, 3, and 5, in the irradiation angle switching region where the operation of the camera is prohibited, the focal length of the photographing optical system. Prohibit change operation.

(14) In the flash photography system for a camera according to any one of Supplementary Notes 1, 3, and 5, the irradiation angle of the flash light emitting device is changed by a driving unit, and the driving by the driving unit is performed. During the period, the photographing operation is prohibited.

(15) In the flash photographing system for a camera according to any one of Supplementary Note 2, 4, and 6, the irradiation angle of the flash light emitting device is changed by a driving unit, and the driving by the driving unit is performed. During this period, stop of the focal length changing operation is prohibited.

(16) In the flash photography system for a camera according to Supplementary Note 14 or 15, the driving means is a motor.

(17) A photographing optical system which is brought out of a housed state to a photographable state by a photographing preparation operation, a flash light emitting device which is set from a housed state to a photographable state in accordance with the above-mentioned photographing preparation operation, and this flashlight A flash photographing system for a camera, comprising: a rotating member provided below the light emitting device and performing a setting operation of the flash light emitting device.

(18) In the camera flash photographing system according to supplementary note 17, the rotating member rotates in a direction in which an interval between the flash light emitting device and an external component of the camera body is widened, so that the flash light emitting device is rotated. Is performed.

(19) In the flash photographing system for a camera described in Supplementary Note 18, an overlap portion between the flash light emitting device and an external component is provided in the axial direction of the rotating member.

[0159]

As described above, according to the present invention, in a camera or the like having a photographing optical system (zoom lens or the like) capable of changing the focal length, a photograph is taken using a flash light emitting device. In addition, it is possible to provide a flash photographing system of a camera capable of obtaining a better photographing result by irradiating the subject with the illumination light more efficiently.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a flash photography system for a camera according to the present invention.

FIG. 2 is a conceptual diagram of a flash photography system for another camera according to the present invention.

FIG. 3 is a view showing a main part of a flash photographing system of the camera according to the first embodiment of the present invention, showing a state in which the flash photographing system of the camera is housed in a camera body; The figure which shows the principal part when it sees from the front of the built-in camera.

FIG. 4 is a schematic sectional view of a main part of the camera of FIG. 3;

5 is a diagram showing a main part of the flash photographing system of the camera shown in FIG. 3, showing a state where the focal length of the photographing optical system is on the short focus (wide angle; Wide) side; The figure which shows the principal part when seen from the front of.

FIG. 6 is a schematic sectional view of a main part of the camera of FIG. 5;

7 is a diagram showing a main part of the flash photographing system of the camera of FIG. 3, showing a state where the focal length of the photographing optical system is on the long focus (telephoto) side; The figure which shows the principal part when seen from the front of.

8 is a schematic sectional view of a main part of the camera of FIG. 7;

9 is a view for explaining the configuration and operation of a flash case of the flash photography system of the camera in FIG. 3, showing a state in which the flash case is housed in a camera body.

10 is a diagram illustrating the configuration and operation of a strobe case of the flash photography system of the camera of FIG. 3, wherein the strobe case is positioned above the camera body when the focal length of the photographing optical system is on the wide angle side. FIG. 3 is a diagram showing a state (wide-angle state) in which the projection is made.

11 is a view for explaining the configuration and operation of the flash photography system of the camera of FIG. 3, showing the operation of the diffusion lever when the strobe case is in a wide-angle state protruding above the camera body from the stored state. FIG. 4 is a diagram illustrating a state in which a diffusion lever is stored in a state in which a strobe case is projected.

12 is a diagram illustrating the configuration and operation of the flash photographing system of the camera of FIG. 3, illustrating the operation of the diffusion lever when the strobe case is in a wide-angle state protruding above the camera body from the stored state. FIG. 5 is a diagram illustrating a state in which a diffusion lever protrudes from the inside of the camera body on the front side of the strobe case (wide-angle state).

FIG. 13 is a view for explaining the configuration and operation of the flash photography system of the camera shown in FIG. 3;
The figure which shows the operation | movement at the time of shifting to a telephoto state from a wide-angle state.

FIG. 14 is a view for explaining the configuration and operation of a main part of the flash photography system of the camera shown in FIG.
The schematic perspective view which shows the schematic structure of FIG.

FIG. 15 is a front view of the cam 17 of FIG. 14;

FIG. 16 is a diagram illustrating a configuration of a main part of the flash photographing system of the camera in FIG. 3 and is a schematic diagram illustrating another example of the cam in FIG. 14;

FIG. 17 is a view showing a main part of a flash photographing system for a camera according to a second embodiment of the present invention, showing a state in which the flash photographing system of the camera is housed in a camera body; FIG. 3 is a diagram illustrating a main part when viewed from the front of a camera in which a light emitting device is built.

FIG. 18 is a schematic sectional view of a main part of the camera of FIG. 17;

19 is a diagram showing a main part of the flash photographing system of the camera shown in FIG. 17 and showing a state in which the focal length of the photographing optical system is on the short focus (wide angle; Wide) side; The figure which shows the principal part when seen from the front of.

FIG. 20 is a schematic sectional view of a main part of the camera of FIG. 19;

21 is a diagram showing a main part of the flash photographing system of the camera of FIG. 17 and is a diagram showing a state where the focal length of the photographing optical system is on the long focus (telephoto side) side; The figure which shows the principal part when seen from the front of.

FIG. 22 is a schematic sectional view of a main part of the camera of FIG. 21;

FIG. 23 is a diagram illustrating a main part of a flash photographing system for a camera according to a third embodiment of the present invention, in which a focal length of a photographing optical system of the camera is on a short focal length (wide angle; Wide) side. FIG. 4 is a diagram showing a main part when viewed from the front of a camera having a built-in flash light emitting device.

FIG. 24 is a schematic sectional view of a main part of the camera of FIG. 23;

25 is a schematic cross-sectional view of a principal part showing a state where the focal length of the photographing optical system of the camera shown in FIG.

FIG. 26 is a diagram illustrating a main part of a flash photographing system for a camera according to a fourth embodiment of the present invention, in which a focal length of a photographing optical system of the camera is on a short focus (wide angle; Wide) side. The principal part schematic sectional drawing which shows the state of.

FIG. 27 is a schematic cross-sectional view of a principal part showing a state where the focal length of the photographing optical system of the camera shown in FIG.

FIG. 28 is a diagram showing a storage state of the flash light emitting device in the flash photography system of the present invention, and is a schematic configuration diagram of a main part when viewed from the front side thereof.

FIG. 29 is a schematic sectional view of a main part of the camera of FIG. 28;

30 is a diagram showing a setting state of the flash light emitting device of FIG. 28, and is a schematic configuration diagram of a main part when viewed from the front side thereof.

FIG. 31 is a schematic sectional view of a main part of the camera of FIG. 30;

FIG. 32 is a schematic sectional view taken along the line AA in FIG. 30;

FIG. 33 is a view for explaining a relationship between a shooting angle of view due to a change in a focal length of a shooting optical system such as a camera for taking a picture or the like and a required irradiation angle of a flash light emitting device required at that time.

[Explanation of symbols]

1, 1A, 1B, 1C ... Flash discharge tube (light emitting unit, strobe unit) 2, 2A, 2B, 2C ... Reflector (light emitting unit, strobe unit) 3, 3A, 3B, 3C ... Optical panel (optical) Lens, strobe unit) 4,4A ... Strobe case (flash device, strobe unit) 5,5A, 5B, 5C ... Diffusion plate (optical element) 6,6A, 6B, 6C ... Front cover (camera exterior configuration) 7, 7A, 7B, 7C: Back cover (camera external component) 8, 8C: Main unit (camera body) 9, 9C: Protective panel 11, 11A, 11B, 11C: Diffusion lever 13, 16, 22, 24, 34, 37 urging member 15, 23 rotating lever 17, 27, 38 cam 26 lens barrel 31, 32 strobe lever (rotating member) 3 , 41 ...... driving lever 39 ...... lever 42 ...... connecting rod 34, 35 ...... O-ring (dustproof, waterproof member) 36 ...... lead wires (power lines)

Claims (3)

[Claims] 1. A photographing optical system having a variable focal length, a flash light emitting device, and irradiation for switching an irradiation angle of the flash light emitting device between at least two angles in accordance with the focal length of the photographing optical system. Angle switching means, when the focal length of the imaging optical system is a focal length corresponding to the area where the irradiation angle is switched by the irradiation angle switching means, prohibition means for prohibiting the shooting operation of the camera, A flash photography system for a camera, comprising: 2. An imaging optical system having a variable focal length, and an illumination angle between a first illumination angle and a second illumination angle smaller than the first illumination angle according to the focal length of the imaging optical system. A flash light emitting device that can be switched by a switch, and prohibiting means that prohibits the camera from performing a shooting operation when the focal length of the photographing optical system is the focal length corresponding to the irradiation angle switching region of the flash light emitting device. A flash photography system for a camera, comprising: 3. A photographing optical system whose focal length can be changed, a flash light emitting device, and a flash irradiation angle of the flash light emitting device according to a focal length of the photographing optical system; An irradiation angle switching unit that can switch between a second irradiation angle smaller than one irradiation angle, and a camera, when a focal length of the imaging optical system is a focal length at which the irradiation angle switching unit operates. A flash photography system for a camera, comprising: prohibition means for prohibiting a photography operation.