JP2000350078A - Electronic camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic camera where a flexibility of design can be kept sufficiently, without decreasing mounting area of boards. SOLUTION: An optical block 6 is placed behind a main mirror and leads an image formed to a primary image forming face by an interchangeable lens 1 to a secondary image forming optical block 7 to re-form again the image onto an image forming face of an image pickup element 8. This optical block 6 is placed at an upper right position when viewed from a rear face of the camera. The image of the image pickup element 8 placed at a right end receives prescribed video processing, and a recording medium 9 records the image. A digital circuit board 10 conducts video processing. The recording medium 9 and the circuit board 10 are both formed as a thin plate and are placed, so that their faces are nearly perpendicular to the optical axis of the secondary image forming optical system. A power supply 11 is placed above the secondary image forming optical block 7, and an analog board 12 used to control a drier and a liquid crystal display device or the like is placed behind the block 7, in such a way as to be nearly horizontal to the optical axis of the secondary image forming optical system to produce a considerably wide facial space and the printed circuit boards consist of two boards 10, 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for re-forming an image formed on a primary image forming surface by a photographing lens with a replaceable image forming lens on an image pickup surface of an image pickup device such as a CCD. The present invention relates to a single-lens reflex type electronic camera having a secondary imaging optical system.

[0002]

2. Description of the Related Art Conventionally, there is an electronic camera disclosed in JP-A-8-130666. In the above-described conventional electronic camera, a plurality of circuit boards are disposed above the secondary imaging optical system block, and a battery storage section is provided on the left side when viewed from the back of the camera, and a storage section for the recording medium is provided on the back of the camera. Was provided.

[0003] Also, recorded images can be output using an external output terminal.
The data was output to an external monitor or the like provided separately from the camera.

[0004]

However, the conventional electronic camera has the following drawbacks.

[0005] In holding the camera, the front and rear thicknesses of the right hand side of the camera cannot be so large, so that the front and rear width of the circuit board is limited. As a result, it is necessary to divide the circuit board into a plurality of boards having a small area, and the degree of design freedom such as an increase in the number of boards, an increase in the number of connectors between the boards, and a decrease in the mounting area is limited. No, it leads to an increase in cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide an electronic camera which can maintain a sufficient degree of design freedom without reducing the mounting area of a substrate.

Since a monitor such as a liquid crystal display is not built in the camera, the recorded image cannot be viewed by the camera alone.

[0008]

According to the first aspect of the present invention,
A mirror box for holding a mount for mounting an interchangeable photographing lens and a main mirror for guiding a light beam passing through the photographing lens to a finder, and a primary image formed by the photographing lens behind the main mirror An optical block for guiding an image formed on a surface to a secondary imaging optical system block for re-imaging an image on an image sensor, a power supply above the optical block, and a recording medium for recording image data on a left side surface Alternatively, in an electronic camera on which a circuit board is arranged, a plate-shaped member is arranged behind the secondary imaging optical block so that its surface is substantially parallel to the optical axis of the secondary imaging optical system. is there.

According to this configuration, since the plate-shaped member is disposed behind the secondary imaging optical block, it is possible to arrange a wide range of plate-shaped members while suppressing an increase in the size of the camera. It is possible to expand the design flexibility and add functions. .

According to a second aspect of the present invention, a circuit board is further arranged as a plate-like member.

According to this configuration, by disposing a wide circuit board behind the secondary imaging optical block, it is possible to secure a single and wide substrate mounting area without dividing the circuit board. As a result, it is possible to increase the degree of freedom in circuit design and reduce costs by reducing the number of connectors between boards.

According to a third aspect of the present invention, a monitor such as a liquid crystal display is disposed as a plate-like member.

According to this configuration, by disposing a monitor such as a liquid crystal display behind the secondary imaging optical block, it is possible to enhance functions while suppressing an increase in the size of the camera.

According to a fourth aspect of the present invention, a recording medium is arranged as a plate-like member.

According to this configuration, the left side of the camera can be miniaturized by disposing the recording medium behind the secondary imaging optical block.

According to a fifth aspect of the present invention, a circuit board and a monitor such as a liquid crystal display are arranged on a substantially plane as plate-like members.

According to this configuration, the circuit board and a monitor such as a liquid crystal display are disposed on a substantially flat surface behind the secondary imaging block, so that a large-sized substrate mounting area can be ensured and the camera can be enlarged. This makes it possible to incorporate a monitor, such as a liquid crystal display, into the camera, thereby enhancing functions.

According to a sixth aspect of the present invention, as a plate-shaped member, a monitor such as a liquid crystal display and a recording medium are arranged on a substantially plane.

According to this structure, the monitor such as a liquid crystal display and the recording medium are arranged on a substantially flat surface behind the secondary imaging block, so that the monitor such as the liquid crystal display can be mounted on the camera while miniaturizing the left side of the camera. Can be built in, and the functions can be enhanced.

According to a seventh aspect of the present invention, a circuit board and a recording medium are arranged on a substantially plane as plate-like members.

According to this structure, the circuit board and the recording medium are arranged on a substantially flat surface behind the secondary image forming optical block, so that the left side surface of the camera can be reduced in size while securing a wide substrate mounting area. can do.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of the basic structure of the electronic camera according to the first embodiment when viewed from the front of the camera.
Is a perspective view when viewed from behind. In FIGS. 1 and 2,
An interchangeable photographing lens 1 is mounted on a camera via a mount 2 held by a mirror box 4. Reference numeral 3 denotes a main mirror which is held by a mirror box 4 and has a taking lens 1
Is guided to the finder 5. Reference numeral 6 is located behind the main mirror 3 and guides the image formed on the primary image forming surface by the photographing lens 1 to a secondary image forming optical system block 7 for re-forming the image on the image pickup surface of the image pickup device 8. It is an optical block. By the operation of the optical block 6, the secondary imaging optical system block 7 is arranged at the lower right when viewed from the back of the camera. An image sensor 8 is arranged at the right end of the secondary image forming optical block 7 and re-images on the image pickup surface. Image sensor 8
Is subjected to predetermined video processing and then recorded on the recording medium 9. Reference numeral 10 denotes a circuit board for performing image processing, a so-called digital circuit board. Recording medium 9
The circuit board 10 and the circuit board 10 each have a thin plate shape, and are arranged so that their surfaces are substantially perpendicular to the optical axis of the secondary imaging optical system as shown in the figure. A power supply 11 is disposed above the secondary imaging optical block 7.

Further, behind the secondary imaging optical block 7, a circuit board for controlling a driving device, a liquid crystal display, etc., a so-called analog board 12, is substantially horizontal to the optical axis of the secondary imaging optical system. This arrangement creates a considerably large surface space, and therefore can constitute a circuit board with two boards, the digital board 10 and the analog board 12, eliminating the necessity of subdividing the circuit board. The area can be secured, the degree of freedom in design is increased, and the number of connectors between the boards can be reduced, and the cost can be reduced.

FIG. 3 also shows the basic structure of the electronic camera according to the second embodiment. By arranging a monitor 13 such as a liquid crystal display having substantially the same shape in the space of the digital board 10 according to the first embodiment, a monitor such as a liquid crystal display which can confirm a captured image while suppressing an increase in the size of the camera can be provided. It can be built into the camera, and the functions can be enhanced.

FIG. 3 also shows the basic structure of the electronic camera according to the third embodiment. By arranging the recording medium 9 having substantially the same shape in the space of the digital board 10 in the first embodiment, the space on the left side of the camera becomes unnecessary, and extremely efficient arrangement for miniaturization of the camera is possible.

FIG. 4 is a perspective view of the basic structure of an electronic camera according to the fourth embodiment when viewed from behind the camera. In FIG. 4, the description of the same reference numerals as in the first embodiment is omitted. Reference numeral 13 denotes a liquid crystal display or the like for viewing a captured image on a monitor, and a part of the analog substrate 12 according to the first embodiment is cut out and arranged on a substantially flat surface to secure a wide substrate mounting area. In this example, the degree of freedom in circuit design is increased, and a monitor such as a liquid crystal display that suppresses an increase in the size of the camera is arranged to enhance functions.

FIG. 4 is a perspective view of the basic structure of the electronic camera according to the fifth embodiment when viewed from behind the camera. In FIG. 4, the description of the same reference numerals as in the first embodiment is omitted. Monitor 1 such as liquid crystal display
3 and the recording medium 9 substantially horizontally to the optical axis of the secondary imaging optical system,
In addition, the digital substrate 10 and the analog substrate 12 are arranged substantially on a plane, and the digital substrate 10 and the analog substrate 12 are arranged on the left side of the secondary imaging optical block substantially perpendicular to the optical axis of the secondary imaging optical system, thereby securing a wide substrate mounting area. This is an example in which the degree of freedom in circuit design is increased, and a monitor such as a liquid crystal display is arranged while suppressing an increase in the size of the camera.

FIG. 5 is a perspective view of the basic structure of the electronic camera according to the sixth embodiment when viewed from behind the camera. In FIG. 5, the description of the same reference numerals as in the first embodiment is omitted. The recording medium 9 according to the first embodiment is formed by cutting out a part of the analog substrate 12 according to the first embodiment and arranging the recording medium 9 at a position substantially on a plane with the cutout, thereby securing a wide substrate mounting area. This is an example in which the degree of freedom in circuit design is increased and the left side of the camera can be reduced in size.

[0030]

As described above, according to the present invention,
The following effects can be obtained.

According to the first aspect of the present invention, by disposing a plate-shaped member behind the secondary imaging optical system block, a wide range of plate-shaped members can be disposed while suppressing an increase in the size of the camera. Therefore, the degree of freedom in design is increased, and the added value such as the addition of functions can be increased.

According to the second aspect of the present invention, it is possible to arrange a wider circuit board without subdividing the circuit board behind the secondary imaging optical system block, and to secure a wider substrate mounting area. As a result, the degree of freedom in circuit design can be increased, the number of connectors between boards can be reduced, and costs can be reduced by reducing the number of assembly steps.

According to the third aspect of the present invention, by disposing a monitor such as a liquid crystal display behind the secondary imaging optical block, it is possible to enhance the functions while suppressing an increase in the size of the camera. Become.

According to the fourth aspect of the present invention, the left side of the camera can be miniaturized by disposing the recording medium behind the secondary imaging optical block.

According to the fifth aspect of the present invention, a circuit board and a monitor such as a liquid crystal display are arranged on a substantially plane behind the secondary imaging optical block, so that a wide range of circuits can be provided without dividing the circuit board. The substrate can be placed,
It is possible to increase the degree of freedom in circuit design by securing a wide area for mounting the board, eliminate the need for connectors between the boards, and reduce costs by reducing the number of assembly steps. The monitor can be located inside the camera.

According to the sixth aspect of the present invention, the circuit board and the recording medium are arranged on a substantially plane behind the secondary imaging optical system block, so that a wide circuit board can be formed without dividing the circuit board. It can be arranged, the circuit design flexibility can be expanded by securing a wide area of the board mounting area, the cost can be reduced by reducing the number of connectors between boards and the number of assembly steps, and the camera left side can be downsized. Can be

According to the seventh aspect of the invention, by disposing the liquid crystal display and the recording medium behind the secondary imaging optical system block, the monitor such as the liquid crystal display can be mounted inside the camera while suppressing the enlargement of the camera. Can be arranged.

[Brief description of the drawings]

FIG. 1 is a perspective view of a basic structure of an electronic camera according to first, second, and third embodiments when viewed from the front of the camera.

FIG. 2 is a perspective view of the basic structure of the electronic camera according to the first, second, and third embodiments when viewed from behind the camera.

FIG. 3 is a perspective view of the basic structure of the electronic camera according to the second and third embodiments when viewed from behind the camera.

FIG. 4 is a perspective view of the basic structure of the electronic camera according to the fourth and fifth embodiments when viewed from behind the camera.

FIG. 5 is a perspective view of a basic structure of an electronic camera according to a sixth embodiment when viewed from behind the camera.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Interchangeable imaging lens 2 Mount 3 Main mirror 4 Mirror box 5 Viewfinder 6 Optical block 7 Secondary imaging optical system block 8 Image sensor 9 Recording medium 10 Digital substrate 11 Power supply 12 Analog substrate 13 Liquid crystal display

Claims (7)

[Claims] 1. A mirror box for holding a mount for mounting an interchangeable photographing lens and a main mirror for guiding a light beam passing through the photographing lens to a finder, wherein the photographing lens is provided behind the main mirror. By 1
An optical block for guiding an image formed on the next imaging plane to a secondary imaging optical system block for re-imaging the image on the image sensor;
With the optical block, the secondary optical system block is disposed below and to the right as viewed from the back of the camera, and a power supply is disposed laterally above the secondary optical system block substantially parallel to the optical axis of the secondary imaging optical system. An electronic camera in which a recording medium for recording imaging data or a circuit board for electrically connecting the recording medium is disposed on the left side surface such that the surface is substantially perpendicular to the optical axis of the secondary imaging optical system. And a plate-like member disposed behind the secondary imaging optical block when viewed from the back of the camera such that its surface is substantially parallel to the optical axis of the secondary imaging optical system. camera. 2. The electronic camera according to claim 1, wherein said plate-shaped member is a circuit board. 3. The electronic camera according to claim 1, wherein said plate-shaped member is a liquid crystal display. 4. The electronic camera according to claim 1, wherein said plate-shaped member is a recording medium. 5. The electronic camera according to claim 1, wherein the plate-like member has a circuit board and a liquid crystal display arranged on a substantially plane. 6. The electronic camera according to claim 1, wherein the plate-like member has a liquid crystal display and a recording medium arranged substantially on a plane. 7. The electronic camera according to claim 1, wherein the plate-shaped member has a circuit board and a recording medium arranged on a substantially plane.