JPH095866A - Arrangement structure for camera - Google Patents

Abstract

PURPOSE: To arrange an optical system for picking up an image in wellbalance state by guiding split luminous flux to the upper part or the lower part of a camera and making it incident on an image pickup element after bending it in a plane along the upper surface or the bottom surface of the camera or guiding it in a lateral direction. CONSTITUTION: The luminous flux forming a primary image 15 is advanced upward and reflected backward by a total reflection mirror 17. Continuously, it is reflected obliquely forward by a total reflection mirror 19. Besides, it is split by a half mirror 23 after it is transmitted through the obliquely installed relay optical system 21. The luminous flux reflected by the mirror 23 is advanced to the back part of the camera and made incident on the other relay optical system 25. The image of the luminous flux is formed on the image pickup surface 27 of the image pickup element by two optical systems 21 and 25. On the other hand, the luminous flux transmitted through the mirror 23 is advanced obliquely forward besides. Thereafter, it is reflected backward by a total reflection mirror 29 and made incident on the other relay optical system 31. Then, the image is formed as a finder image 33 by the actions of two optical systems 21 and 31 and observed from the back part through an eyepiece 35 by a photographer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera for splitting an incident light beam to form an optical path leading to a photosensitive recording medium and an image pickup device. The image picked up by the image pickup device is used for the purpose of being electronically or magnetically recorded separately from the image picked up on a photosensitive recording medium such as a silver salt film, or reproduced on an electronic viewfinder.

[0002]

2. Description of the Related Art Conventionally, many cameras have been proposed in which an incident light beam is split and guided to a photosensitive recording medium and an image pickup device, but in reality, it is rarely used.

[0003]

The reason why the camera which splits the incident light beam and guides it to the photosensitive recording medium and the image pickup device is not practically used is considered as follows. That is, since an image pickup device having a large image pickup surface area is expensive, an element used in a video or the like generally has an image pickup surface area much smaller than that of a photosensitive recording medium (silver salt film). Therefore, it is necessary to use a relay optical system or the like that reduces the image at a high reduction ratio when the image formed on the silver salt film for image pickup is guided to the image pickup device. Since the relay optical system requires a long optical path length, a large structure is required above the camera. As a result, the device becomes a large-scale device in which another camera is mounted on top of the ordinary camera, and the shape of the device is very different from that of the ordinary camera, which makes the consumer feel uncomfortable. An object of the present invention is to provide a camera in which an optical system for image pickup can be arranged with good balance.

[0004]

To achieve the above object, the present invention according to claim 1 divides a light beam from the same objective optical system to form an image on a photosensitive recording medium and another image plane. In a camera capable of performing the above, in a light path from an objective optical system to a photosensitive recording medium, a light beam splitting unit that splits the light beam and guides the light beam above or below the camera, and the light beam split by the light beam splitting unit is provided on the upper surface of the camera ( An optical path forming means for forming an optical path by bending in a plane along an upper direction) or a bottom surface (in case of a lower direction), and receiving a light beam guided according to the optical path formed by the optical path forming means And an image pickup element for performing image pickup.

According to a second aspect of the present invention, in a camera capable of splitting a light beam from the same objective optical system to form an image on the photosensitive recording medium and another image plane, the objective optical system is used to detect the photosensitive recording medium. A light beam splitting unit that splits the light beam in the optical path toward the camera and guides it to the lower side of the camera; and an optical path forming unit that forms an optical path so that the light beam split by the light beam splitting unit proceeds in a plane along the bottom surface of the camera. An image pickup device is provided which receives a light beam guided along the optical path formed by the optical path forming means at a position outside the above-mentioned surface and picks up an image.

On the other hand, according to a third aspect of the present invention, in a camera capable of splitting a light beam from the same objective optical system to form an image on the photosensitive recording medium and another image plane, the objective optical system is used to detect the light. And a light flux splitting means for splitting the light flux into an upper optical path or a lower optical path of the camera, and a light flux split by the light luminous flux splitting means on a top surface (when guided upward) or a bottom surface (guided downward) of the camera. (In the case), an optical path forming unit that forms an optical path that is guided in a lateral direction of the camera, and an image sensor that receives a light beam guided according to the optical path formed by the optical path forming unit and captures an image. .

[0007]

According to the structure of the present invention, the divided luminous flux is guided to the upper side or the lower side of the camera, further bent there in the plane along the upper surface or the bottom surface of the camera, and then enters the image pickup device. Alternatively, the divided luminous flux is guided to the lower side of the camera, further guided there in a plane along the bottom surface of the camera, and then enters the image sensor outside the plane. Further, the divided light flux is guided to the upper side or the lower side of the camera, and further guided there in the lateral direction in the plane along the top surface or the bottom surface of the camera, and then enters the image sensor.

[0008]

1 and 2 show the appearance of a camera adopting the present invention. In FIGS. 1 and 2, 1A,
1B is a camera body, and a photographing lens 11 is provided on the front surface.
21 is installed. Further, in the camera of FIG. 1, the first and second protrusions 13 protruding forward from the front surface of the camera,
15 is formed. The camera of FIG. 1 has a horizontally long shape, which is not extremely different from the general shape of a camera using a photosensitive recording medium such as a silver salt film, and the camera of FIG. It is not much different from the general shape of. In addition, the camera main bodies 1A and 1B are provided with various well-known structures necessary for photographing, but since they are not related to the gist of the present invention, description thereof will be omitted.

3 and 4 show the outline of the present invention. In FIG. 3, a light beam L which has passed through a photographing lens (not shown in the figure) and is incident is split into a light beam L1 which goes straight as it is and a light beam L2 which is bent upward at a right angle. The light beam L1 that travels straight advances as it is toward the rear and is imaged on the film F, which is a photosensitive recording medium loaded in the camera, to be photographed. On the other hand, the bent light beam L2 forms a primary image at a position equivalent to that of the film F, further rises, and then is appropriately bent in a surface (actually a space having a height) TP along the upper surface of the camera. , A secondary image or, if necessary, a tertiary image is formed on the image pickup surface of the image pickup device. Alternatively, the light flux L2 is guided in the lateral direction of the camera in the space TP, and then is formed as a secondary image or a tertiary image as necessary on the imaging surface of the imaging device.

In the configuration of FIG. 4, the light beam L which has passed through the taking lens (not shown) and is incident is split into a light beam L1 which goes straight as it is and a light beam L2 which is bent downward at a right angle. The light beam L1 that travels straight advances as it is toward the rear and is imaged on the film F, which is a photosensitive recording medium loaded in the camera, to be photographed. On the other hand, the bent light beam L2 forms a primary image at a position equivalent to that of the film F, and after further descending, is appropriately bent in a surface (actually a space having a height) BT along the bottom surface of the camera. Alternatively, after being guided in the lateral direction of the camera, it is formed as a secondary image or, if necessary, a tertiary image on the image pickup surface of the image pickup device. Further, it is preferable that the light flux L2 is guided into the space BT, then exits from the space BT, and then enters the image sensor.

In the above two examples, the space TP or BT
Is a space that extends along the top and bottom of the camera,
The size and shape of the camera can be secured without making much changes compared to conventional ones, and a long optical path length can be obtained by appropriately arranging a member that bends the optical path such as a reflecting mirror or prism. You can Therefore, the relay optical system and the like can be arranged with a high degree of freedom. Further, in the camera as shown in FIG. 1, the length of the camera in the lateral direction is relatively large. Therefore, if the optical path is formed in the lateral direction in the spaces TP and BT, a long optical path length can be obtained. Therefore, the relay optical system and the like can be arranged with a high degree of freedom. Furthermore, if the image is taken after the light flux exits the space BT, the lower part of the camera does not become too large, and the shape does not differ significantly from the conventional camera.

Next, various embodiments showing the actual arrangement of the optical system in the spaces TP and BT will be described. FIG. 5 shows a first embodiment of the present invention. In this figure, the main lens is omitted for the sake of simplicity. In FIG.
Reference numeral 11 denotes a semi-transparent mirror that is installed behind the main lens at an angle of 45 degrees with respect to the optical axis of the main lens and splits a light beam. The light flux that has passed through the semi-transparent mirror 11 is projected on the film F exposed in the photographing frame 13 formed behind it to form an image. Although the film F is a roll film that is pulled out from the cartridge and reaches the photographing frame 13, the illustration is omitted because it is not directly involved in the configuration of the present invention. On the other hand, semi-transparent mirror 1
The light flux reflected by 1 travels above the camera to form a primary image 15. The primary image 15 may be an aerial image, or may be an image formed on a focusing plate provided at the position of the image plane (this point also applies to each of the following embodiments. Is).

The light flux forming the primary image goes further upward and is reflected backward by the total reflection mirror 17, and this reflected light is further reflected obliquely forward by the total reflection mirror 19.
The light beam reflected obliquely forward passes through the relay optical system 21 installed obliquely, and is then split by the semi-transparent mirror 23 forming the second beam splitter. The light flux reflected by the semi-transparent mirror 23 travels toward the rear of the camera and enters another relay optical system 25. This light flux forms an image on the image pickup surface 27 of an image pickup device such as a CCD by the action of the two relay optical systems 21 and 25. That is, this image is picked up by the image pickup element and recorded as a moving image or a still image on a magnetic disk, a magnetic tape, an IC card or other various recording media (not shown). Also, the image is reproduced on an electronic viewfinder provided on the rear surface or the upper surface of the camera or prepared as an external device.

On the other hand, the light beam transmitted through the semi-transparent mirror 23 further advances diagonally forward, is reflected backward by the total reflection mirror 29, and enters another relay optical system 31. This luminous flux is 2
An image is formed as a finder image 33 by the action of the two relay optical systems 21 and 31. This image is observed by the photographer from behind by the eyepiece lens 35.

In the above structure, the light flux is bent in the Z shape along the horizontal plane in the space (TP) along the upper surface of the camera. Therefore, a long optical path length for arranging the relay optical system can be obtained, and the camera can have a shape that is not extremely different from that of a normal camera as shown in FIGS. Therefore, the consumer does not feel uncomfortable and is easily accepted. In addition, since the area of the finder image and the image sensor is smaller than that of the image frame 13 of the film F,
As described above, each relay optical system has to reduce the image, but in the configuration as shown in FIG. 5, the distance from the image plane of the primary image 15 to the incident position of the relay optical system 21 is set. Since it can be used for a long time, there is an advantage that a relay optical system having a large reduction rate can be used.

Next, a second embodiment of the present invention will be described with reference to FIG. In the configuration shown in FIG. 6, a relay optical system 37 is installed between two total reflection mirrors 17 and 19, and three relay optical systems 18, 21, and 31 are provided for the finder image and the image for imaging, respectively.
5 is different from FIG. 5 only in that the images are formed by and and 18, 21, and 25, and other configurations are the same. In such a configuration, since the relay optical system is divided into a large number, there is an advantage that the degree of freedom in design is higher and the design is easier.

FIG. 7 shows a third embodiment of the present invention. In this configuration, only the relay optical system 39 is installed between the two total reflection mirrors 17 and 19 in place of the relay optical system installed between the total reflection mirror 19 and the semi-transparent mirror 23, as shown in FIG. They are different, and the other configurations are the same. Two total reflection mirrors 1
Since the distance between 7 and 19 is larger than the distance between the total reflection mirror 19 and the semi-transparent mirror 23, the degree of freedom in designing the relay optical system 39 is increased, and it is possible to make the relay optical system with a small number of constituent lenses. Has advantages.

FIG. 8 shows a fourth embodiment of the present invention. In this embodiment, 91 is a semi-transparent mirror that is installed behind the main lens at an angle of 45 degrees with respect to the optical axis of the main lens, and constitutes a first beam splitter. The light flux that has passed through the semi-transparent mirror 91 is projected onto the film F exposed in the shooting image frame 93 formed behind it,
Form an image. On the other hand, the light flux reflected by the semi-transparent mirror 91 goes upward of the camera and forms a primary image 95.

The light flux forming the primary image goes further upward, is reflected backward by the total reflection mirror 97, and this reflected light is further reflected obliquely forward by the total reflection mirror 99.
The light rays reflected obliquely forward are split by the semitransparent mirror 101. The light flux reflected by the semi-transparent mirror 101 is directed to the rear of the camera and enters the relay optical system 103. This light flux forms an image on the image pickup surface 105 of the image pickup element by the action of the relay optical system 103.

On the other hand, the light beam transmitted through the semi-transparent mirror 101 further advances obliquely forward, is reflected backward by the total reflection mirror 107, and enters another relay optical system 109. This light flux is imaged as a finder image 111 by the action of the relay optical system 109. This image is observed by the photographer through the eyepiece lens 113.

Next, a fifth embodiment of the present invention will be described with reference to FIG. Also in this figure, the main lens is omitted. In FIG. 9, reference numeral 131 denotes a semi-transparent mirror which is installed behind the main lens at an angle of 45 degrees with respect to the optical axis of the main lens, and constitutes a first beam splitter. This semi-transparent mirror 13
The light flux that has passed through 1 is a shooting image frame 13 formed behind it.
It is projected on the film F exposed in 3 and forms an image. On the other hand, the light flux reflected by the semi-transparent mirror 131 goes upward of the camera to form a primary image 135.

The light flux forming the primary image goes further upward and is reflected backward by the total reflection mirror 137. This reflected light is further reflected by the total reflection mirror 139 in the lateral direction of the camera and in the diagonally forward direction. It The light beam reflected laterally and diagonally forward passes through the relay optical system 141, and then is reflected by the total reflection mirror 143 to the rear of the camera. The reflected light beam is subjected to the secondary image 14 by the action of the relay optical system 141.
The image is formed as 5. A semi-transparent mirror 147 and an eyepiece lens 149 are installed behind the secondary image 145.
To be observed by the photographer. On the other hand, the semi-transparent mirror 14
The light flux reflected by 7 is in the lateral direction of the camera (the above total reflection mirror 1
39), and an image is formed on the image pickup surface 153 of the image pickup device by the relay optical system 151 installed in the horizontal direction. In this configuration, the optical path from the total reflection mirror 139 to the total reflection mirror 143 and the optical path from the semitransparent mirror 147 to the image sensor are set to be substantially horizontal in the space TP.
In other words, the arrangement is particularly well adapted to the shape of the camera having the horizontally long configuration as shown in FIG.

10 to 12 show a sixth embodiment of the present invention. In FIG. 10, only the optical path forming member in the camera is shown, and other configurations are omitted. The photographic lens is also omitted in the figure. On the other hand, FIG. 11 and FIG. 12 schematically show the internal arrangement of the camera when the camera is viewed from above and when viewed from the front. In each figure, reference numeral 241 denotes a semi-transparent mirror, which is 4 with respect to the optical axis of the taking lens (not shown).
It is installed at an angle of 5 degrees and splits the light beam incident through the taking lens. The light flux transmitted through the semi-transparent mirror 241 is imaged on the surface F of the film loaded in the camera at the rear side and is photographed.

On the other hand, the light flux reflected by the semi-transparent mirror 241 is guided above the camera and forms a primary image 243 at a position equivalent to the film surface F. The light flux forming the primary image 243 is further reflected by the reflecting mirror 245 to the rear of the camera above it. After that, the luminous flux is reflected by the reflecting mirror 24.
The other reflecting mirror 247 installed behind 5 reflects the light obliquely forward and sideward of the camera. Reference numeral 249 denotes a further reflecting mirror, which is a portion for holding the camera including the first protruding portion 13 shown in FIG. 1 (hereinafter, referred to as a holding portion).
It is installed above the inside of the (see FIG. 11). The light beam guided by the reflecting mirror 247 is reflected downward by the reflecting mirror 249 and travels downward in the first protrusion 13. On the other hand, a relay optical system 251 is installed in the up-down direction inside the first protruding portion 13, and an image pickup surface 253 of the image pickup element is located below the relay optical system 251. Therefore, the light flux reflected by the reflecting mirror 249 is transmitted to the relay optical system 251.
Is reduced by, and an image is formed and imaged on the imaging surface 253. The captured image is reproduced on an electronic viewfinder installed at the rear of the camera for observation, and
Magnetic / magneto-optical disk, magnetic tape, IC card, etc. loaded in the accommodation chamber MEDC formed in the gripping portion including the protruding portion 15 (the gripping portion on the side opposite to the gripping portion where the optical path is formed) Recording medium MED consisting of any of
Is recorded as a still image or a moving image. Further, a battery chamber BATC for loading two batteries BAT, which is a power source for operating the camera, in series is formed in the grip portion including the second protrusion.

When a rolled silver salt film is used as the photosensitive recording medium, a silver salt film cartridge FC
The cartridge chamber CMB for loading the cartridge and the spool chamber SPL for winding the silver salt film are required. In this embodiment, the battery BAT, the relay optical system 251 and the like are arranged by using the protrusions 13 and 15. As shown in FIG. 11, the cartridge chamber CMB is at the rear of the battery BAT loading portion, and the spool chamber SPL is the relay optical system 25.
It can be provided at the rear of the installation site such as 1. Therefore, the structure for loading the film is the same as the conventional camera generally used.

In the present embodiment, since the optical path forming members such as the reflecting mirror 249 and the relay optical system 251 are arranged in the first projecting portion 13, no special space is required at the rear portion thereof, and the conventional structure is used. The configuration arranged in the camera can be arbitrarily arranged. Therefore, the optical system configuration of the present invention can be adopted without significantly changing the conventional configuration.

13 and 14 show a seventh embodiment of the present invention. In this embodiment, the light flux reflected toward the first protrusion 13 is not reflected downward as it is, but is reflected once toward the rear of the camera and then downward. Is different from the sixth embodiment. In the following description, the same members as those in the sixth embodiment are designated by the same reference numerals, and the description will be simplified.
The light flux which is reflected by the semi-transparent mirror 241 and forms the primary image 243 is guided through the reflecting mirrors 245 and 247 to the diagonally front side of the camera. The light flux is reflected to the rear of the camera by the reflecting mirror 255 installed in the first protruding portion 13, and is guided to the lower side of the camera by the reflecting mirror 257 arranged behind it. A relay optical system 259 is installed in the up-down direction below the reflecting mirror 257, and an image pickup surface 261 of the image pickup element is located below the relay optical system 259. Therefore, the reflector 2
The light flux reflected by 57 is reduced by the relay optical system 259, and an image is formed on the image pickup surface 261 to be picked up.
The captured image is reproduced on the electronic viewfinder and observed, and is recorded on the recording medium MED as a still image or a moving image.

In this embodiment, the light beam sent toward the first projecting portion 13 is reflected backward and then guided in the vertical direction. Therefore, the spool chamber SPL for winding the roll-shaped silver salt film loaded in the camera is arranged by using the first protrusion 13 in order to avoid the light flux. That is, as shown in FIG. 14, the spool chamber SPL is installed below the reflecting mirror 255, and the exposed portion of the film is sequentially sent forward along the side surface of the camera, and below the reflecting mirror 255. Being rolled up. In addition,
In FIG. 14, the spool chamber SPL is shown by an imaginary line in order to prevent the illustration from becoming complicated. Further, the recording medium accommodation chamber MEDC, the battery chamber BATC, the cartridge chamber CMB
The arrangement is similar to that of the sixth embodiment.

In this seventh embodiment, the relay optical system 2 is used after the light beam once obliquely reflected forward is further reflected backward.
Since it is led to 59, the optical path length from the primary image 243 until the luminous flux enters the relay optical system 259 is longer than that in the sixth embodiment, and a relay optical system having a high reduction ratio can be used accordingly. it can.

Next, an eighth embodiment of the present invention will be described with reference to FIGS. FIG. 15 shows only the optical path forming member in the camera, and other configurations are omitted. 16 and 17 are schematic diagrams showing the internal arrangement when the camera is viewed from above and from the front, respectively. In each figure, reference numeral 271 denotes a semi-transparent mirror, which is installed at an angle of 45 degrees with respect to the optical axis of the taking lens (not shown), and splits the light flux incident through the taking lens. The light flux transmitted through the semi-transparent mirror 271 is exposed through the exposure aperture 2 of the film loaded in the camera in the rear.
An image is formed on the exposed film surface F in 73,
To be photographed.

On the other hand, the light beam reflected by the semi-transparent mirror 271 is guided below the camera and forms a primary image 275 at a position equivalent to the film surface F. The light flux forming the primary image 275 is further reflected in the space BT below it by the reflecting mirror 277 to the side of the camera (to the right from the front). After that, the luminous flux is reflected above the camera, that is, outside the space BT, by another reflecting mirror 279 installed on the side of the reflecting mirror 277. The light beam guided by the reflecting mirror 279 travels upward in the grip portion behind the first protrusion 13. A relay optical system 281 is installed vertically in the grip portion, and an image pickup surface 283 of the image pickup element is located above the relay optical system 281. Therefore, the reflecting mirror 279
The light flux reflected by is reduced by the relay optical system 281, and is imaged on the imaging surface 283. The captured image is reproduced and observed by an electronic viewfinder installed in the rear part of the camera, and a gripping portion including the second protrusion 15 (a gripping portion on the side opposite to the gripping portion where the optical path is formed). It is recorded as a still image or a moving image on the recording medium MED loaded in the accommodation chamber MEDC of (part).

Further, the battery chamber BATC of the grip portion including the second projecting portion serves as a power source for operating the camera.
Book batteries BAT are connected and loaded in series,
One of them is loaded along the vertical direction of the camera, and the other one is loaded along the horizontal direction of the camera. In this embodiment, the spool chamber SPL for winding the roll-shaped silver salt film loaded in the camera is arranged by using the first protrusion 13 in order to avoid the light flux. That is, as shown in FIG. 16, the spool chamber SPL is installed in front of the relay optical system 281, and the exposed portion of the film is sequentially sent forward along the side surface of the camera and wound up. In addition, as described above, the recording medium storage chamber M
The EDC and the battery chamber BATC are arranged by using the second protruding portion 15, and the cartridge chamber CMB is arranged in the same manner as in a normal camera. In this embodiment, the light flux that is incident and split passes through the lower portion of the camera toward the image sensor, so that the lower portion of the camera is larger than the upper portion. Therefore, the center of gravity of the camera is located lower, and the stability of the camera is extremely good. However, because the optical path is formed so that imaging is performed outside the surface (space) along the bottom surface of the camera, the lower part of the camera becomes too large and the shape becomes extremely different from the conventional camera. Is prevented.

Next, a ninth embodiment of the present invention will be described with reference to FIGS. FIG. 18 shows only the optical path forming member in the camera, and other configurations are omitted. 19 and 20 are schematic diagrams showing the internal arrangement when the camera is viewed from above and from the front, respectively. In each drawing, reference numeral 303 denotes a semi-transparent mirror, which is installed at an angle of 45 degrees with respect to the optical axis of a taking lens (not shown), and splits a light beam incident through the taking lens. The light flux that has passed through the semi-transparent mirror 303 is exposed through the exposure aperture 3 of the film loaded in the camera at the rear.
An image is formed on the exposed film surface F in 05,
To be photographed.

On the other hand, the light beam reflected by the semi-transparent mirror 303 is guided to the side of the camera (rightward from the front) and forms a primary image 307 at a position equivalent to the film surface F. The light flux forming the primary image 307 is further reflected to the side above the camera by the reflecting mirror 309. The light beam guided by the reflecting mirror 309 travels upward in the grip portion behind the first protrusion 13. Another reflecting mirror 311 is installed above the grip portion, and the light flux rising in the grip portion is reflected to the side of the camera (to the left from the front). A relay optical system 313 is installed laterally on the side of the reflecting mirror 311 and an image pickup surface 315 of the image pickup device is located further on the side thereof. Therefore, the light flux reflected by the reflecting mirror 311 is reduced by the relay optical system 313, and an image is formed and imaged on the image pickup surface 315. The captured image is reproduced and observed by an electronic viewfinder installed in the rear part of the camera, and a grip portion including the second protrusion 15 (on the side opposite to the grip portion where the ascending optical path is formed). It is recorded as a still image or a moving image on a recording medium MED including a magnetic / magneto-optical disk, a magnetic tape, an IC card, etc., which is loaded in the (grip portion).

In this embodiment, a spool chamber S for winding a roll of silver salt film loaded in a camera is used.
In order to avoid the luminous flux, the PL is the first as in the eighth embodiment.
It is arranged by utilizing the protruding portion 13 of.

A storage chamber MEDC for loading the recording medium MED and a battery chamber BATC are formed in the gripping portion including the second protrusion, and two batteries BA are provided.
Ts are electrically connected in series and arranged in parallel and loaded. Further, above the battery chamber BATC, a capacitor CAP that stores energy for causing a flash (not shown) incorporated in the camera to emit light is housed. The installation of the battery BAT and the capacitor CAP may be reversed.
In this embodiment, since the optical path from the primary image 307 to the incidence on the relay optical system 313 becomes long, a relay optical system with a high reduction rate can be adopted. Further, since the optical path is formed in the lateral direction of the camera, it is suitable to be used in a horizontally long camera as shown in FIG.

FIG. 21 shows a tenth embodiment of the present invention. The configuration of the optical system of the present embodiment is an upside down configuration of the ninth embodiment, and there is no other difference. That is, the light flux laterally reflected by the semi-transparent mirror 317 forms a primary image 319,
Furthermore, it is reflected below the camera by the reflecting mirror 321.
The light is guided laterally by the reflecting mirror 323. The light flux reflected by the reflecting mirror 323 is reduced by the relay optical system 325 arranged in the left-right direction, and the image pickup surface 327 of the image pickup device is obtained.
Is imaged and imaged.

In this embodiment, two battery BATs are connected and loaded in series in the battery chamber BATC of the gripping portion on which the second protrusion 15 is provided, and below the battery BAT. The capacitor CAP is housed in the lateral direction. Other configurations are similar to those of the ninth embodiment. Also in this embodiment, since the optical path from the primary image 319 to the incidence on the relay optical system 325 becomes long, a relay optical system having a high reduction rate can be adopted. Further, since the optical path is formed in the lateral direction of the camera, it is suitable to be used in a horizontally long camera as shown in FIG.

[0039]

According to the structure of the present invention, the divided luminous flux is guided to the upper side or the lower side of the camera, and further bent there in the plane along the upper surface or the bottom surface of the camera or after being guided in the lateral direction. Incident on. Alternatively, the divided luminous flux is guided to the lower side of the camera, further guided there in a plane along the bottom surface of the camera, and then enters the image sensor at a position outside the plane. Therefore, a sufficient optical path length can be obtained without providing a particularly large projecting space in the upper or lower part of the camera, and the optical path for imaging can be provided without difficulty. Further, it is possible to prevent the lower part of the camera from becoming too large and having a shape extremely different from that of the conventional camera.

[Brief description of drawings]

FIG. 1 is an external view of a camera adopting the present invention.

FIG. 2 is an external view of another camera that employs the present invention.

FIG. 3 is a diagram showing a first outline of the configuration of the present invention.

FIG. 4 is a diagram showing a second outline of the configuration of the present invention.

FIG. 5 is a perspective view showing the internal configuration of the camera of the first embodiment of the present invention.

FIG. 6 is a perspective view showing the internal structure of the camera of the second embodiment of the present invention.

FIG. 7 is a perspective view showing an internal configuration of a camera of a third embodiment of the present invention.

FIG. 8 is a perspective view showing an internal configuration of a camera of a fourth embodiment of the present invention.

FIG. 9 is a perspective view showing the internal structure of the camera of the fifth embodiment of the present invention.

FIG. 10 is a perspective view showing the internal structure of the camera of the sixth embodiment of the present invention.

FIG. 11 is a schematic top view of the sixth embodiment.

FIG. 12 is a schematic front view of the sixth embodiment.

FIG. 13 is a perspective view showing the internal structure of the camera of the seventh embodiment of the present invention.

FIG. 14 is a schematic top view of the seventh embodiment.

FIG. 15 is a perspective view showing an internal configuration of a camera of an eighth embodiment of the present invention.

FIG. 16 is a schematic top view of the eighth embodiment.

FIG. 17 is a schematic front view of the eighth embodiment.

FIG. 18 is a perspective view showing the internal structure of the camera of the ninth embodiment of the present invention.

FIG. 19 is a schematic top view of the ninth embodiment.

FIG. 20 is a schematic front view of the ninth embodiment.

FIG. 21 is a schematic front view of the tenth embodiment of the present invention.

[Explanation of symbols]

11, 91, 131, 241, 271, 303, 30
9, 317, 321: Light beam splitting means 17, 19, 23, 97, 99, 101, 137, 13
9, 143, 147, 245, 247, 255, 27
7, 311, 323: Optical path forming means 27, 105, 153, 253, 261, 283, 31
5,327: Image sensor

Claims (3)

[Claims] 1. A camera capable of splitting a light beam from the same objective optical system to form an image on a photosensitive recording medium and another image plane, in an optical path from the objective optical system to the photosensitive recording medium. A light beam splitting unit that splits the light beam and guides the light beam above or to the camera; an optical path forming unit that bends the light beam split by the light beam splitting unit in a plane along the top or bottom surface of the camera to form an optical path; An arrangement structure of a camera, comprising: an image pickup device that receives a light beam guided by an optical path formed by a forming unit and picks up an image. 2. A camera capable of splitting a light beam from the same objective optical system to form an image on a photosensitive recording medium and another image plane, in an optical path from the objective optical system to the photosensitive recording medium. A light beam splitting unit that splits the light beam and guides it to the lower side of the camera, an optical path forming unit that forms an optical path so that the light beam split by the light beam splitting unit travels in a plane along the bottom surface of the camera, and an optical path forming unit. An arrangement structure of a camera, comprising: an image pickup element which receives a light beam traveling along a formed optical path at an out-of-plane position and picks up an image. 3. A camera capable of splitting a light beam from the same objective optical system to form an image on a photosensitive recording medium and another image plane, in an optical path from the objective optical system to the photosensitive recording medium. A light beam splitting unit that splits the light beam and guides the light beam above or below the camera, and an optical path forming an optical path that guides the light beam split by the light beam splitting unit in the lateral direction of the camera in a plane along the top or bottom surface of the camera. An arrangement structure of a camera, comprising: an image pickup device configured to receive the light flux guided by the optical path formed by the optical path forming device to perform an image pickup.