JPH03243908A - Binoculars - Google Patents

Abstract

PURPOSE:To make effective utilization of the space in a housing and to facilitate the exchange of parts by disposing operating members of less frequently used mechanisms on the lower surface of the binoculars. CONSTITUTION:Objective lenses 13, 14 are disposed on the front side of 1st, 2nd lens barrels 11, 12 disposed laterally with a central axis A-A' as a symmetrical axis, prism 15, 16 are disposed at the intermediate point and eyepiece lenses 17, 18 are disposed on the rear side. A focusing detection module 19 is provided with a photodetecting lens 20 fixed on the front side and is provided with a motor 22 for AF behind this lens. A reduction gear part 23 is provided between the focusing detection module 19 and the motor 22. The mechanism 34 for adjusting width and the mechanism 35 for adjusting diopter are provided in the lower parts of the lens barrels 11, 12 and are mounted on a base plate 36. An electric circuit board 27 is formed of a flexible printed wiring board and is so disposed as to cover the outer periphery of the focusing detection module 19. The space in the housing is effectively utilized in this way and the entire part is formed compact. The exchange of the parts is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention described above relates to binoculars, and particularly to binoculars equipped with an automatic focusing function and an interpupillary distance adjustment function.

Generally, binoculars have functions such as focus adjustment, interpupillary distance adjustment, and diopter adjustment. Among these, systems have been proposed in which the focus adjustment function is automated in the same way as cameras and the like (Japanese Patent Publication No. 62-6205, Japanese Patent Publication No. 46407-1982, and Japanese Patent Application Laid-open No. 154705-1982).

In this way, when an autofocus function is adopted, the space occupied by the electrical system inside the binocular housing increases accordingly. Therefore, the arrangement of the electrical system part and the mechanical system part within the housing becomes a problem. However, in conventional binoculars, both the electric circuit board and the mechanical system are placed in the upper part of the housing, so the space inside the housing cannot be used effectively, and the binoculars have a large external shape. In addition, the operating members will also be placed above,
Since some of these operating members rarely need to be used after being operated once, the appropriateness of the arrangement of the operating members is questioned. Furthermore, when replacing parts, if electrical parts and mechanical parts are mixed, the work is difficult.

An object of the present invention is to provide new and useful binoculars that solve these problems.

In order to achieve the above object, the binoculars of the present invention include: a housing; an objective lens disposed at the front and an eyepiece disposed at the rear of the housing so as to be movable in the front-rear direction; A focus detection module that receives light from an object to be observed and generates an electric signal based on the distance to the object, and a lens drive motor that drives the optical system. an electric circuit board that includes a circuit that generates an electric signal for controlling the lens drive motor based on the electric signal, and that is disposed at an upper part of the housing; and an pupil distance that is disposed at a lower part of the housing. It consists of an adjustment mechanism and.

In this case, the electric circuit board may be formed of a flexible printed wiring board and may be arranged to cover the outer periphery of the focus detection module.

Further, the focus detection module may be disposed between the eleventh and second optical systems and between the interpupillary distance adjustment mechanism and the electric circuit board.

Furthermore, a diopter adjustment mechanism for driving the eyepiece may be provided below the optical system.

With this configuration, the space within the housing can be used effectively and the entire housing can be made compact.

Moreover, since the electrical part and the mechanical part are separated and independent, each part can be easily replaced.

Furthermore, operating members for mechanisms that are used less frequently, such as the interpupillary distance adjustment mechanism, can be placed on the bottom surface of the binoculars, thereby preventing erroneous operations during observation.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 shows a plan view of the binoculars of this embodiment.
FIG. 2 shows the front side, and FIG. 3 shows the back side. Here, 2 is an upper cover of a cover forming the housing of the binocular [1], and 3 is a lower cover. These covers 2.3 are made of synthetic resin moldings. The upper cover 2 has a slide-type operation member 4 (hereinafter referred to as the "first operation member") for the main switch that turns the power on and off, and a button-type operation member 5 (hereinafter referred to as "the second operation member") for the automatic focus (rAFJ) switch. On the other hand, the lower cover 3 is provided with a sliding operating member 6 for adjusting interpupillary distance (hereinafter referred to as the "third operating member") and a sliding operating member for adjusting diopter. 7.8 (hereinafter referred to as “4th
, a fifth operating member) are provided.

Next, 9 is a front cover, and 10 is a rear cover. A transparent glass is attached to the front cover 9, and inside the front cover 9 are first and second lens barrels 11, 12 (fourth
A light-receiving window 15 is provided with first and second objective lenses 13 and 14 respectively attached to the lens (see figure), and a light-receiving lens for AF. The length of the light receiving window 15 in the vertical direction is selected to be equal to or less than the vertical length of the objective lenses 13 and 14. Therefore, the vertical length (thickness) of the binoculars 1 does not increase due to the presence of the light receiving window 15. The rear cover 10 has an eyepiece hood 10a made of rubber material,
10b is provided.

The optical system structure of the binocular Ml having the above-described external structure is such that the first and second lens barrels 11 and 12 are arranged on the left and right with the central axis A-A' as the axis of symmetry, as schematically shown in FIG. , the first and second R cylinders 11.12 have an objective lens 13.14 in front, a prism 15.16 in the middle, and an eyepiece 17.
．． 18 is placed at the rear.

The objective lens 13.14 is attached to the lens barrel 11.1 for AF.
2, while the eyepieces 17.18 can be moved independently of each other in their respective barrels 11.12 for diopter adjustment.

1st and 2nd fiI1. The trunks 11, 12 are movable toward or away from each other in order to adjust interpupillary distance, as will be described later.

A focus detection module 19 is provided along the central axis AA', and this focus detection module 19 includes a light receiving lens 20 fixed in front. Note that an AF motor 22 is provided behind the focus detection module 19, and a reduction gear section 23 for decelerating the operation of this motor 22 and transmitting it to the objective lens 13.14 is connected to the focus detection module 19. 19 and the motor 22. For example, a stepping motor is used as the motor 22. The focus detection module 19 adopts a phase difference detection method as shown in FIG. 5, although it is not particularly limited to this.

In FIG. 5, the field mask SM and the condenser lens LC are arranged near the position where the image is formed by the imaging lens 20. In FIG. Re-imaging lenses L1 and L2 are arranged behind the condenser lens LC with light *2 as the axis of symmetry, and in front of these re-imaging lenses L1 and L2, there is an aperture AI.
and A2, a mask plate 24 is provided. A CCD line sensor 25 is arranged on the imaging plane of each re-imaging lens L1, L2. The condenser lens LC has the power to form images of the apertures A1 and A2 of the mask plate 24 on predetermined positions of the imaging lens 20, and the sizes of the apertures A1 and A2 are such that the observation object passing through the imaging lens 20 It is set so that only light that passes through an aperture with a specific aperture value, for example, F5.6, is allowed to pass through.

The imagers f, Io, and Ib on the optical axis are each image forming lenses 20.
It shows an image of the observation object Of, ○o1 0b in front of the object. Re-imaging lens L of these images If1 Io, Ib
The re-imaged images by L and L2 are I if and I, respectively.
lo.

1b and l2f112o, indicated by I2b. In other words, the re-imaged image of the reference imager 0 of the observation object 00 located at the intermediate distance ■
1o and I2o are connected to a position slightly in front of the line sensor 25, and 2f is a re-imaging image I of the image If of the observation object Of located at a long distance. The re-imaged image I lb of the image Ib of the observation object ○b located at a short distance, which is focused at a position close to Z, and I 2b is the re-imaged image I lo.

It is connected at a position behind I2o and away from the optical axis Z. Here, the position of the image by the imaging lens 20 corresponds to the distance between the two re-imaged images, and the distance between the two re-imaged images by the line sensor 25 corresponds to the distance between the two re-imaged images of the reference image ■0. A short distance or a long distance is determined based on whether the distance is longer or shorter than the image distance, and the amount of image shift is detected based on the difference in distance. That is, the line sensor 25 detects the distance of the re-imaged image by detecting the repeated movement across a large number of pixels arranged along the moving direction of the re-imaged image. This detected distance is processed by a microcomputer.

Then, the microcomputer uses the processing result to
It is determined whether or not it is in the F state, and the day focus amount is calculated.

Furthermore, compared to active triangulation methods, etc., the phase difference detection method only needs to receive a beam of light in one direction, so it does not require optical spread, and is therefore suitable for placement in the center of binoculars. It can be said that there is.

Of course, even with the triangulation method, if high accuracy is not required, it is possible to place it in the center of the binoculars.

In addition, a contrast method is also possible.

As for the AF operation method, a system controller (described later) outputs a day focus amount from a predetermined focus position based on the output of the sensor, and drives the motor 22 by the day focus amount (therefore, the objective lens 13, 14 It is an open method that moves the In the case of binoculars, the necessary precision can be rougher than cameras etc. because the eyes have the ability to adjust the focus, and it is sufficient even without using a feedback method, but of course, feedback method control is more accurate in terms of accuracy. Needless to say, it is advantageous. In this example, since focus detection is performed without going through the objective lenses 13 and 14, the lens is driven by the amount of - times focus detection data to achieve in-focus, and the accuracy in that case is determined by the stepping motor. It is raised by using .

Returning to FIG. 4, the focus detection module 19, motor 22, and its reduction gear section 23 installed approximately in the center of the binoculars 8!1 (therefore, between the first and second Wt cylinders 11.12)
When cut vertically along the central axis AA', it becomes as shown in FIG. However, the motor 22 and the reduction gear portion 23 are not cut in section in FIG. In the figure, the lens barrel 26 is bent in a double-shape, and has first, second, and third reflecting mirrors Ml, M.
2. M3 is arranged as shown in the figure so that the optical axis Z1 of the light receiving lens 20 is below the optical axis ZO of the objective lens, the optical axis is bent forward and upward as shown by 22 by the first reflecting mirror M1, and then Then, the optical axis is bent backward as shown by 23 by the second reflecting mirror M2 so that the direction is parallel to the Z1, so that the image of the object to be observed by the light receiving lens 20 is formed near the front of the condenser lens LC. As a result, the length of the optical path is substantially increased, and the optical path is made compact.

This is because increasing the focal length of the light receiving lens improves focus detection accuracy. That is, the amount of lens extension from the infinite position (day focus amount) is expressed as follows: Lens extension amount = f2/(1-f), where f is the focal length of the lens, and x is the distance to the object to be observed.

Now f = 30. l = 4 m → 400
At 0m, 302/ (4000-30) = 0.2
2 Also, when f-60, l = 4 m → 4000 m, 602/(4000-60) = 0.913', and for the phase difference method that calculates the amount of day focus, it increases depending on the distance to the object. A lens with a long focal length that performs day focusing is more advantageous in terms of accuracy.

Focus detection module 19, motor 22, reduction gear section 2
A circuit board 27 is arranged above 3. This circuit board 27 is composed of a flexible printed board, and a plan view thereof is shown in FIG. Front wing section 28 of circuit board 27
．． 29 is bent and arranged so as to be in contact with the side of the focus detection module 19. Specifically, it is partially adhered to the outer side surface of the lens barrel 26 with double-sided adhesive tape or the like to maintain its bent shape. At the rear, a microcomputer 30 constituting a system controller to be described later, a main switch pattern 31, and an AF switch pattern 32 are provided. On the circuit board 27,
In addition, many chip components 33 configuring predetermined circuits are attached.

Returning to FIG. 4 again, if a vertical section is taken along approximately the center BB of the mirror opening 12, the result will be as shown in FIG. 7. Lens barrel 11
, 12, there is a mechanism 3 for adjusting interpupillary distance as shown in FIG.
4 and a diopter adjustment mechanism 35 are provided. These mechanisms are mounted on the base plate 36. 8 is the fifth operating member for adjusting the diopter mentioned above, and 6 is the third operating member for adjusting the interpupillary distance.
It is an operating member.

As described above, inside the binocular fiR1, the circuit board 2
7 is placed at the top, and the mechanical parts (pupillary distance adjustment mechanism 34 and diopter adjustment mechanism 35) are placed at the bottom, so that the space inside the binoculars 1 can be used effectively and the entire binoculars can be made compact. Moreover, since the electrical part and the mechanical part are separated and independent, each part can be easily replaced.

For example, when an electrical component on the circuit board 27 fails, the electrical component or the circuit board 27 can be replaced without any modification to the mechanical parts.

Note that, unlike this embodiment, it is also possible to adopt a mode in which the circuit board 27 is placed below and the mechanism part is placed above, but the interpupillary distance adjustment mechanism 34 and the diopter adjustment mechanism 35 may be adjusted once. Then, there is no need to make much adjustment after that, so these mechanical parts that are used less frequently are placed below, as in this embodiment, while the first operating member 4 for the main switch and the AF switch Frequently used operating members such as the second operating member 5 may be arranged on the upper cover 2, and it is reasonable to arrange circuits related to these near (and therefore above). I can say that.

In addition, A from the center to the bottom of the lens barrel 1.1.12
A lens drive mechanism for F is provided. This AF
As shown in FIGS. 9 to 11, the lens drive mechanism includes the motor 22, a reduction gear section 23 consisting of four gears G1-04 that reduce the rotation of the motor 22, and an output of the reduction gear section 23. It consists of a camshaft 37 directly connected to the gear G4, a lens drive lever 38 driven by the camshaft 37, and the like. A cam groove 39 is formed along the longitudinal direction of the cam shaft 37, and a pin 40 of the lens drive lever 38 is engaged with this cam groove 39. Therefore,
When the camshaft 37 rotates, the lens drive lever 38 moves in the C or D direction (FIG. 11).

The lens driving bar 38 has a cylindrical portion 44.45 that is loosely engaged with a pair of guide shafts 42.43 provided on a motor base plate 41, and the guide shaft 42 is connected via the cylindrical portion 44.45.
．． It is supported and guided by 43 and moves stably.

Holes 46.47 are provided at the left and right ends of the lens drive lever 38, and the objective lens system 13.
Fourteen bins 48,49 are engaged. The holes 46 and 47 are elongated in the direction perpendicular to the moving direction of the lens drive lever 38, but this is due to the interpupillary distance adjustment described later.
This is to allow for the displacement of the parts 12 and 12 in the E direction.

The motor base plate 41 has three support parts 50, 51, 52 extending upward to support the front ends of the guide shafts 42, 43 and the cam shaft 37 at the front, and the motor 22 at the rear. and a support portion 53 for supporting the rear end of the reduction gear portion 23 and the camshaft 37. Said mota base plate 4
1, a pair of spring contact pieces 55, 56 (shown only in FIG. 11, FIG. 9,
(not shown in FIG. 10 for the sake of simplification), these contact pieces 55, 56 have terminal ends in the C direction (
When the curved piece 57 of the lens drive lever 38 comes into contact with one of the contact pieces 55, the contact piece 55.
56 are in contact with each other. In FIG. 9, columns 58, 59 and 6 provided on the base plate 36
Shafts 62 and 63 supported at 0.61 are interpupillary distance guide shafts for adjusting interpupillary distance, and lens barrels 11 and 12 are movably supported on these interpupillary distance guide shafts 62 and 63, respectively. 64
a to 64d and 65a to 65d are protrusions projecting downward from the lens barrel 11.12, and the interpupillary distance guide shaft 62.63 passes through recesses or holes formed in these protrusions (the first
(See Figure 3).

12(a) to 14 show the interpupillary distance adjustment mechanism, and in these figures, 66 and 67 are first and second interpupillary distance adjustment plates. The first part 72 is fitted into a bottle 68, 69 installed in the barrel 11 through a hole 70, 71. This first portion 72 extends along the axial direction of the first lens barrel 11, and the holes 70.71 are provided in L-shaped portions 73.74 at both ends thereof. The first interpupillary distance adjusting plate 66 further includes a second portion 75 extending outward from approximately the center of the first portion 72, and a third portion also extending outward on the side closer to the L-shaped portion 73. 77. The second portion 75 has an interpupillary distance adjustment bin 78.
An elongated hole 76 is formed in which the third portion 77 engages, and a hole 80 for coupling with a link plate 81 is provided in the triangular portion 79 at the tip of the third portion 77 .

A second
A fourth portion 82 extending toward the lens barrel 12 is provided, and an elongated hole 85 into which an interpupillary distance adjustment bin 84 engages is formed at an end 83 of the fourth portion 82 . In addition, the fourth portion 82
is provided with a long hole 86 having a long diameter in a direction parallel to the axes of the first and second lens barrels 11 and 12. Bin 88 is engaged.

Next, the second interpupillary distance adjusting plate 67 includes a first portion 89 for fixing to the second @ trunk 12, a second portion 90 having a long hole 91 that engages with the interpupillary distance adjustment bin 84, and a first R trunk. L has a third portion 92 extending toward the 11 side, and an extension portion 93 of the third portion 92 is provided with a hole 95 that engages with the link plate 81.
It has a character-shaped portion 94. The third portion 92 has a long hole 96 through which the bin 88 of the third operating member 6 for adjusting interpupillary distance passes. The long hole 96 and the long hole 86 of the fourth portion 82 of the first interpupillary distance adjusting plate 66 are perpendicular to each other. The link plate 81 has a U-shape with one-shaped portions 97 and 98 at both ends, and has a hole 101 in the center portion 99 into which the link shaft 100 is fitted. The L-shaped portions 97 and 98 are elongated holes 104 and 10 into which the link shafts 102 and 103 fit, respectively.
5.

The operation of the interpupillary distance adjustment mechanism 34 made up of the above-mentioned components will be explained.

First, when widening the distance between the first and second R trunks 11.12 in order to widen the interpupillary distance, the third operating member 6 for adjusting the interpupillary distance is moved in the direction of arrow F. As a result, the third pupil width adjusting plate 66, which is engaged with the bin 88 of the third operating member 6, similarly moves in the direction of arrow F. At this time, the long holes 76.85 of the first interpupillary distance adjustment plate 66 slide the interpupillary distance adjustment bins 78.84 fixed to the base plate 36, so that the first adjustment plate 66 adjusts the interpupillary distance adjustment bins 78.84. is used as a guide shaft to stably move in a straight line.

In this way, when the first interpupillary distance adjustment plate 66 moves in the direction of arrow F, the link plate 81 rotates in the direction of arrow H about the link shaft 100. Therefore, the second interpupillary distance adjustment plate 67 moves in the opposite direction to the first interpupillary distance adjustment plate 66. At this time, the second interpupillary distance adjusting plate 67 is guided by the interpupillary distance adjusting bin 78.84 through the elongated hole 106.91, and stably moves linearly. In this way, the first and second interpupillary distance adjusting plates 66.
67 move in opposite directions, it causes bins 68 .
69 and 68°, the first and second fixed via 69''
The lens barrels 11 and 12 move away from each other, and the binocular fi
@The width of l increases. This state is shown in FIG. 12(b).

Next, when narrowing the interpupillary distance, by moving the third operating member 6 in the direction opposite to the arrow F, the first interpupillary distance adjustment plate 66, the link plate 81. Since the second interpupillary distance adjusting plate 67 moves in the opposite direction to that described above, the first and second fR trunks 11.12 approach each other, and as a result, the interpupillary distance of the binoculars 1 narrows. This state is shown in FIG. 12(C).

Next, the diopter adjustment mechanism will be explained with reference to FIGS. 15 to 17.

The diopter adjustment mechanism can be adjusted independently on the left and right sides.

Therefore, only one configuration will be described, and a description of the other will be omitted. First, 110 is a diopter adjustment lever that is L-shaped as a whole with a first part 111 and a second part 112, and at the front end of the first part 111 is a fourth operation member 7 for adjusting the diopter. A long hole 113 that engages with a bottle 114 is formed. The second portion 112 is provided with a hole 116 into which the diopter adjustment lever shaft 115 fits, and a hole 118 into which the diopter adjustment shaft 117 fits. Diopter adjustment lever shaft 11
5 is a center axis when the diopter adjustment lever 110 rotates. The diopter adjustment shaft 117 consists of a large diameter portion 119 and a bottle-shaped small diameter portion 120. The large diameter portion 119 fits into a long hole 122, and the small diameter portion 120 fits into the hole 11 of the diopter adjustment lever 110.
8 is fitted and fixed. The small diameter portion 120 is provided at an eccentric position with respect to the large diameter portion 119.

This is to adjust the reference position of the fourth operating member 7 during manufacturing. In this case, the diopter adjustment mechanism (fourth operating member 7) is focused at infinity at the reference position (the clicked position on the lower cover) with respect to the objective lens infinity determined by the end detection switch. In order to achieve the desired state, the diopter adjustment shaft 117 is turned to finely adjust the longitudinal position of the lens barrel 11.

The diopter adjustment plate 121 is attached to the base plate 3 as shown in FIG.
A pair of elongated holes 124 and 125 are formed in the diopter adjustment plate 121 at positions apart from each other. Diopter adjustment plate guide shaft 126.1
27 is adapted to engage. Diopter adjustment guide axis 1
26 and 127 are fixed to the base plate 36 as shown in FIG. 16, but they may be fixed by screwing, for example.

Note that the diopter adjustment lever shaft 115 is also fixed to the base plate 36 in a similar manner. The diopter adjustment plate 121 slides on the diopter adjustment plate guide shafts 126 and 127. A large elongated hole 128 formed in the diopter adjusting plate 121 has a diopter interlocking bin 1 protruding from the bottom of the lens barrel 11.
29 is adapted to engage. Note that the diopter linking bin 129 is fixed to the eyepiece inner cylinder 130 of the eyepiece lens 17, as shown in FIG. As a result, the diopter adjustment plate 12
1 moves in the direction of arrow J, for example, the eyepiece 17 moves in the direction of the arrow. Note that the diopter-linked bin 1
The reason why the hole 128 of the diopter adjustment plate 121 with which the lens 29 engages is made into a long hole is that when adjusting the interpupillary distance mentioned above, the lens barrel 11 is
This is to allow movement in the direction.

Next, the operation will be explained. First, when the fourth operation member 7 for diopter adjustment is moved in the direction of arrow P, the diopter adjustment lever 110 rotates in the direction of arrow Q about the diopter adjustment lever shaft 116 .

Therefore, the diopter adjustment plate 121 moves in the direction of the arrow J, the diopter interlocking bin is driven in the direction of the arrow, and the eyepiece inner tube 130 also moves in the direction of the arrow.

Next, when the fourth operation member 7 for diopter adjustment is moved in the opposite direction to the direction of arrow P, the diopter adjustment lever 110 and the diopter adjustment plate 121 move in the opposite direction to the above, and the eyepiece inner cylinder 130 also moves in the opposite direction.

By the way, when actually adjusting the diopter, it is easier to achieve more accurate diopter adjustment if the objective lens is at an infinity position.
It is preferable to turn on the main switch (described later) of binocular R1 in advance and reset the objective lens to the infinity position before adjusting the diopter as described above (however, in this case, the main switch ○N automatically adjusts the objective lens (The mechanism must be such that it moves to an infinite position.) Note that instead of resetting the objective lens to the infinity position, after turning on the main switch, the AF may be activated to adjust the diopter so that the human eye is aligned with the in-focus position.

Next, FIG. 18 shows the circuit system of the binocular R1 of this embodiment. In the figure, reference numeral 140 is a system controller made up of Migro Combi. Power supply battery 141
The output voltage (DC voltage) VDDO is provided as a power source to the motor 22 and also to the DC/DC converter unit 142. This DC/DC converter unit 142 responds to a Pwc signal for power control given from the system controller 140 and supplies a predetermined output voltage (DC voltage) VDDI to the system controller 140, and also converts VCCI and VCC2 to the focus detection module 19. give to Here, vDDl and V
CCI is adjusted to 5■, and VCC2 is adjusted to 12V. For example, the system controller 140 controls the DC/DC converter unit 142 to de-energize VCCI and VCC2 to reduce battery consumption when the focus detection module 19 is not activated.

A battery check circuit 143 checks the output voltage of the battery 141 according to a command from the system controller 140, and transmits the result to the system controller 140.

Motor drive circuit 144 is activated by a control signal from system controller 140 to drive motor 22 . 145 is a sliding main switch,
146 is a bush type AF switch, and 147 is an end detection switch formed of contact pieces 55 and 56 shown in FIG. 148 is a light emitting diode for warning display;
As a result of a check by the battery check circuit 143, the light is turned on when the battery is below a predetermined value or when the object seen with the binoculars has low contrast. If there is a warning due to the lighting of the light emitting diode, the user can adjust the focus manually instead of using AF. Of the circuit shown in FIG. 18, a portion indicated by a broken line 200 is provided on a circuit board 27 shown in FIG.

Next, FIG. 19 is a diagram for explaining the installation and storage part of the battery 141, in which (a) and (b) correspond to FIGS. 2 and 3, respectively. A line has been added to the battery area. Note that (C) is a right side view of (a). 150 is a grip consisting of a battery cover 151 attached to the lower cover 3 of the binocular fR1;
The grip 150 can be easily held by holding the grip 150 with your fingers. A 6V battery 141 is installed to be housed inside the grip 150, and the battery 141 is held by attaching and fixing the battery cover 151 to the lower cover 3. Therefore, the battery 141 is supported by the battery cover 151. In addition, the battery cover 151 is binocular #! 1, a battery cover release switch 152 is provided as shown in FIG. 1(b) so that the battery cover 151 can be removed from the binoculars Ml by operating this switch 152. is desirable.

As explained above, according to the present invention, the space within the housing can be used effectively and the entire housing can be made compact. Moreover, since the electrical part and the mechanical part are separated and independent, each part can be easily and conveniently replaced. Furthermore, operating members for mechanisms that are used less frequently, such as the interpupillary distance adjustment mechanism, can be placed on the bottom surface of the binoculars, thereby preventing erroneous operations during observation. On the other hand, the frequently used AF operation member can be placed above the binoculars, making it convenient to use.

[Brief explanation of drawings]

FIG. 1 is a plan view of binoculars embodying the present invention, and FIG.
The figure is a front view, Figure 3 is a back view, Figure 4 is a plan view showing the internal optical system and focus detection module, etc., Figure 5 is a diagram showing the optical system of the focus detection module, Figure 6 is the fourth
7 is a sectional view taken along the line AA' in the figure, FIG. 7 is a sectional view taken along the same line BB', and FIG. 8 is a plan view showing the circuit board used in this embodiment. Figure 9 shows the AF lens drive mechanism viewed from above, Figure 10 shows it viewed from the front, and Figure 1.
Figure 1 is an exploded perspective view thereof. FIG. 12(a) is a diagram showing the interpupillary distance adjustment mechanism as seen from above, FIG. 12(b) and FIG. 12(c) are diagrams showing the operation results, and FIG. 13 is a diagram showing the interpupillary distance adjustment mechanism. FIG. 14 is a perspective view of the device as seen from the side. FIG. 15 is a diagram showing the diopter adjustment mechanism viewed from above;
FIG. 16 is a side view, and FIG. 17 is an exploded perspective view thereof. FIG. 18 is a circuit block diagram showing the circuit configuration of this embodiment. FIG. 19 is a diagram showing the battery storage structure. FIG. 20 is a diagram for explaining the problems of the conventional example. l... Binoculars, 4... First operating member for main switch, 5... A
2nd operating member for F switch, 6... 3rd operating member for interpupillary distance adjustment, 7.8... 4th and 5th operating member for diopter adjustment, 11.
12... First and second@body, 13.14... Objective lens, 17.18... Eyepiece lens, 19... Focus detection module, 20.
...Light receiving lens, 22...Motor, 23...
Reduction gear section, 25... CCD line sensor, 26
... Lens barrel, 27... Circuit board, 34... Interpupillary distance adjustment mechanism, 35... Diopter adjustment mechanism, 36...
Base plate, 37...Cam shaft, 38...Lens drive lever 39...Cam groove, 41...Motor plywood, 48.49...Bin, 55.56...For end detection switch switch piece, 6
6.67... First and second interpupillary distance adjustment plates, 81... Link plate, 110... Diopter adjustment lever 121... Diopter adjustment plate, 129... Diopter interlocking bin, 140 ...System controller, 141...K pond, 142...DC/DC converter unit, 143...Battery check circuit, 145...Main switch, 146...AF switch, 147...Terminal Detection switch, 148... Light emitting diode for warning display, 150...
Grip, 151...Battery cover, 152...
Battery cover release switch.

Claims (4)

[Claims] (1) An optical system consisting of a housing, and a pair of first and second optical systems arranged on the left and right, each consisting of a housing, an objective lens disposed at the front part of the housing, and an eyepiece lens disposed at the rear part of the housing. a focus detection module that receives light from an object to be observed and generates an electric signal based on the distance to the object, a lens drive motor that drives the optical system, and a focus detection module that drives the lens drive motor based on the electric signal. Binoculars comprising: an electric circuit board that includes a circuit that generates an electric signal for controlling and is placed in an upper part of the housing; and an interpupillary distance adjustment mechanism that is placed in a lower part of the housing. (2) The binoculars according to claim 1, wherein the electric circuit board is formed of a flexible printed wiring board and is arranged to cover the outer periphery of the focus detection module. (3) The binoculars according to claim 1, wherein the focus detection module is disposed between the first and second optical systems and between the interpupillary distance adjustment mechanism and the electric circuit board. . (4) The binoculars according to claim 1, further comprising a diopter adjustment mechanism for driving the eyepiece lens provided below the optical system.