JP2602481Y2 - Camera type image scanner - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera-type image scanner having a finder mechanism and an area marker mechanism, and more particularly to a camera-type image scanner in which the two mechanisms are provided in the same housing.

[0002]

2. Description of the Related Art In a conventional camera-type scanner, as shown in FIGS. 5 and 6, a finder mechanism 1 and an area marker mechanism 2 are formed separately from each other. It was used after replacement.

[0003] As shown in FIG.
An eyepiece 5 and a focusing screen 6 are mounted on the same optical axis in a finder housing 4. The camera body 3
Includes an imaging lens 7 and a planar solid-state imaging device (hereinafter, CC).
D) 8 are mounted on the same optical axis. And
The finder mechanism 1 is detachably attached to the housing 9 of the camera body 3 so that its optical axis is perpendicular to the optical axis of the camera body 3.
The camera body 3 has a mirror 10 rotatably provided on the optical axis of the camera body 3 via a support shaft 11. When the finder mechanism 1 is used, the mirror 10 is mirrored with respect to the optical axis on the camera body side. 10 is set at an angle of 45 degrees, so that reflected light from a subject (not shown) is reflected by the mirror 10 on the optical axis of the finder mechanism 1. During imaging, the mirror 10 is flipped up in a direction parallel to the optical axis of the camera body 3, and an image of the subject is projected on the CCD 8.

On the other hand, in the area marker mechanism 2, as shown in FIG. 6, a light source 22, a condenser lens 23 and a reticle plate 24 are mounted on the same optical axis in an area marker housing 21. A square scale is formed on the reticle plate 24. The area marker mechanism 2 is detachably attached to the housing 9 of the camera body 3 so that the optical axis of the area marker mechanism 2 is perpendicular to the optical axis of the camera body 3. When the area marker mechanism 2 is used, as in the case of using the finder mechanism 1, the mirror 10 is moved four times with respect to the optical axis of the camera body.
The light emitted from the light source 22 is set to an angle of 5 degrees, and the light emitted from the light source 22 is transmitted through the condenser lens 23 and the reticle plate 24 to the mirror 10.
Light is projected onto a not-shown subject. The reticle plate 2 projected on the subject in this way
The image pickup range of the subject can be confirmed by the scale (reticle pattern) of 4.

[0005]

However, in the conventional camera type scanner configured as described above,
Since the reticle plate 6 of the finder mechanism 1 and the reticle plate 24 of the area marker mechanism 2 are separately incorporated in the finder housing 4 and the area marker housing 21, respectively, the optical path from the subject to the CCD 8 plane and the reticle plate 6 Or it is difficult to ensure an equal optical path to the reticle plate 24.

In a camera-type scanner, a finder mechanism 1 and an area marker mechanism 2 are provided between imaging operations.
Is to apply an external force to the camera body 3, and as a result, the positional relationship between the subject and the camera body 3 may be out of order.

Further, when the finder mechanism 1 or the area marker mechanism 2 is replaced, there is a possibility that these mechanisms 1 and 2 may fall, and there is a problem that the mechanisms 1 and 2 are damaged, resulting in poor workability.

The present invention has been made in view of such circumstances, and has as its object to provide a camera-type image scanner capable of improving operability and image reading accuracy.

[0009]

In order to achieve the above object, a camera-type image scanner according to the present invention provides a C-type image scanner.
Viewfinder mechanism 1 for checking the image formation state on CD8
And a camera-type image scanner including an area marker mechanism 2 for projecting light emitted from the light source 22 to the subject to display an imaging range. In the camera-type image scanner, both the finder mechanism 1 and the area marker mechanism 2 are provided in the same housing 31; A first optical path for guiding reflected light from a subject to the finder mechanism 1;
A mirror 32 for switching between a light emitted from the light source 22 and a second optical path for guiding the light to a subject is provided rotatably in the housing 31.

The rotation of the mirror 32 may be performed manually or by the motor 41.

[0011]

In the camera type image scanner having the above structure, the finder mechanism 1 and the area marker mechanism 2 are arranged in the same housing 31 and the optical path is switched by the mirror 32. And the reticle plate 24 provided in the area marker mechanism 2 can be shared.
No need to replace 2. As a result, there is no possibility of occurrence of breakage due to replacement of the two mechanisms 1 and 2, and the two mechanisms 1 and 2 can be precisely focused with a simple structure.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the camera type image scanner of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show the configuration of an embodiment of the present invention. In these figures, parts corresponding to those of the conventional example shown in FIGS. 5 and 6 are denoted by the same reference numerals, and the description thereof will be omitted as appropriate.

1 to 3, a finder mechanism 1 and an area marker mechanism 2 are provided outside a housing 9 of the camera body 3.
Is provided. An area marker mechanism 2 in which a light source 22 and a condenser lens 23 are arranged on an optical axis parallel to the optical axis on the camera body 3 side, and an optical axis perpendicular to the optical axis on the camera body 3 side The finder mechanism 1 on which the eyepiece 5 and the focusing screen 6 are arranged is housed. The reticle 6 also has the function of the reticle plate 24, and has a square reticle pattern engraved on its surface.

A mirror 32 is disposed at the intersection of the optical axes of the finder mechanism 1 and the area marker mechanism 2, and one end of a mirror support frame 33 that supports the mirror 32 is connected via a support shaft 34. It is rotatably supported by the housing 31. The mirror support frame 33 is urged to rotate counterclockwise by a coil spring 35 wound around a support shaft 34, and is fixed at 45 degrees to the optical axis of the area marker mechanism 2 by a not-shown locking member. And at approximately 90 degrees with respect to the above angle.

The housing 31 has a support shaft 36 parallel to the support shaft 34.
Is rotatably provided, and one end of a mirror drive arm 37 is fixed to the support shaft 36. On the side surface of the mirror support frame 33, a mirror drive pin 38 that can be engaged with the mirror drive arm 37 is implanted.
Is biased against the mirror drive arm 37 by the biasing force. Further, as shown in FIG. 3, one end of a handle 39 is fixed to one end of the support shaft 36 protruding outside the housing 31.

In the above configuration, when the finder mechanism 1 is used, the mirror drive arm 37 is rotated counterclockwise through the support shaft 36 using the handle 39, and is rotated through the mirror drive pin 38. The mirror 32 is rotated in a direction substantially perpendicular to the optical axis of the area marker mechanism 2 as shown by a dotted line in FIG. In this state, it is possible to confirm the image forming state of the subject incident on the finder mechanism 1 via the imaging lens 7 and the mirror 10.

When the area marker mechanism 2 is used, the mirror driving arm 37 is similarly rotated clockwise using the handle 39, and the mirror 3 is biased by the coil spring 35.
2 is rotated counterclockwise and locked at an angle of 45 degrees with respect to the optical axis of the area marker mechanism 2, as shown by the solid line in FIG. In this state, the light emitted from the light source 22 enters the reticle plate 6 also serving as a reticle plate via the condenser lens 23 and the mirror 32, and is further reflected by the mirror 10 to project a reticle pattern on a subject. Can be.

According to the present embodiment, since the finder mechanism 1, the area marker mechanism 2, and the mirror 32 for switching these functions are provided in the same housing 31, the focusing plate 6 and the reticle plate 24 are shared. It is possible to reduce costs. Further, since the two optical paths of the focusing plate 6 and the reticle plate 24 are kept completely equal, there is no need to adjust the positions of the two, and high-accuracy focusing can be performed. Further, since there is no need to replace the finder mechanism 1 with the area marker mechanism 2, there is no external force applied to the camera body 3 due to the replacement, and the positional relationship between the subject and the camera body 3 is not likely to be disrupted. At the same time, troublesome work in replacement is eliminated, and there is no possibility of damaging the mechanisms 1 and 2, thereby improving workability.
Labor saving can be achieved.

In the above-described embodiment, the case where the position of the mirror 32 is changed by manually turning the handle 39 has been described. However, as shown in FIG. Thus, the rotation angle of the support shaft 36 may be controlled to be within a predetermined range. In this case, a switch 44 is provided between the power supply 43 and the control unit 42, and the switch 44 is turned on when the motor is driven.

[0021]

As described above, according to the camera-type image scanner of the present invention, the finder mechanism and the area marker mechanism are provided in the same housing, and the mirror for switching both functions is provided in the same housing. Operability and image reading accuracy can be improved with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a configuration of an embodiment of a camera type image scanner of the present invention.

FIG. 2 is an enlarged sectional view showing a configuration of a shutter mechanism and an area marker mechanism of FIG.

FIG. 3 is a view as viewed from an arrow A in FIG. 2;

FIG. 4 is a block diagram illustrating a mirror driving arm driving mechanism according to another embodiment of the present invention.

FIG. 5 is a longitudinal sectional view showing a configuration of an example of a camera type image scanner equipped with a conventional finder mechanism.

FIG. 6 is a longitudinal sectional view showing a configuration of an example of a camera type image scanner equipped with a conventional area marker mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Finder mechanism 2 Area marker mechanism 8 CCD (solid-state imaging device) 22 Light source 31 Housing 32 Mirror 41 Motor

Continuation of front page (56) References JP-A-6-153031 (JP, A) JP-A-6-41272 (JP, U) JP-A-6-20675 (JP, U) JP-A-4-9023 (JP , U) (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 5/225

Claims (3)

(57) [Scope of request for utility model registration] 1. A camera-type image scanner comprising: a finder mechanism for confirming an imaging state of a subject on a solid-state imaging device; and an area marker mechanism for projecting light emitted from a light source to the subject to display an imaging range. A first optical path that guides reflected light from the subject to the finder mechanism; and a second optical path that guides light emitted from the light source to the subject while providing the finder mechanism and the area marker mechanism in the same housing. A camera-type image scanner, wherein a mirror for switching between the two is rotatably provided in the housing. 2. The camera-type image scanner according to claim 1, wherein the mirror is manually rotated. 3. The camera-type image scanner according to claim 1, wherein the mirror is rotated by a motor.