JP2000081663A - Filter changeover mechanism for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter changeover mechanism for camera capable of executing photographing by easily switching plural filters and preventing a filter from being erroneously selected. SOLUTION: Through-holes 202A-202C are provided on a circumference centering at the center of a supporting plate 202. Filter members 204A and 204B are attached at the through-holes 202A and 202B, and the through-hole 202C is made in a passing-through state. The supporting plate 202 is rotated by centering a supporting shaft 206, so that the points of the filter members 204A and 204B and the through-hole 202C are selectively positioned at the points on the front side of a photographing lens 106. Members 216A and 216B respectively same as the filter members 204A and 204B positioned on the optical axis 106A of the photographing lens 106A are attached on the outer peripheral part of the supporting plate 202 facing a finder window 110, and a transparent member 216C is attached at the outer peripheral part corresponding to the through-hole 202C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a camera filter switching mechanism.

[0002]

2. Description of the Related Art For example, in a single-lens reflex camera, by mounting various filters on its photographing lens, it is possible to perform photographing with various filter effects. Then, the type of the mounted filter can be confirmed by visually checking the finder.

[0003]

However, unlike a single-lens reflex camera, in a camera in which the optical paths of the photographing optical system and the finder optical system are provided separately, the type of filter attached to the photographing lens is confirmed in the finder. Can not do. Therefore, when photographing by using a plurality of filters properly, there is a problem that even if there is a mistake in selecting a filter, photographing is performed without noticing the mistake. In general, a camera called a film with a lens does not have a mechanism for attaching a filter to a photographing lens. However, even with such a camera, if a photograph using a filter can be performed, the filter effect is reduced. This is preferable because a reflected picture can be taken. Also, in order to ensure that the special effects of each filter are reflected when printing on photographic paper, when filming using filters, it is necessary to ask the photo lab (lab) to print the film. It is necessary to transmit in detail information such as the type, color, and exposure multiple of the filter used for shooting (hereinafter referred to as filter information). However, if the transmission of such filter information is forgotten or inaccurately transmitted, exposure correction and color correction are erroneously performed at the time of printing, and there is a possibility that printing with special effects being impaired is performed. There is. The present invention has been devised in view of the above circumstances, and it is an object of the present invention to switch between a plurality of filters in a camera in which a light path of a photographing optical system and a light path of a viewfinder optical system are separately provided. Can be easily done, and
It is an object of the present invention to provide a camera filter switching mechanism that can prevent a filter selection error. Further, an object of the present invention is that even in a camera having no mechanism for mounting a filter such as a film with a lens, it is possible to easily switch between a plurality of filters and take an image, and to prevent a mistake in selecting a filter. An object of the present invention is to provide a camera filter switching mechanism. Another object of the present invention is to provide a camera filter switching mechanism capable of preventing unintended exposure correction and color correction from being performed during printing.

[0004]

In order to achieve the above object, the present invention provides a camera provided with a photographing optical system having a photographing lens and a finder optical system having a finder window, wherein a plurality of types of filter members are provided. Providing support means for supporting the filter member so that each of the filter members is selectively located on the optical axis of the photographing lens and in front of the photographing lens, the supporting means,
Display means is provided for displaying the type of filter member located in front of the taking lens in the viewfinder window. Also, in the present invention, the support means has a disk-shaped support plate, and the plurality of filter members are arranged on a circumference centered on the center of the support plate, and the support plate is photographed at the center. The filter member is arranged at a position displaced from the optical axis of the lens, and the filter member is selectively positioned on the optical axis of the photographing lens and in front of the photographing lens by rotating the support plate around its center. It is characterized by having been done. Further, the present invention is configured such that a portion of the support plate faces the finder window, and a portion of the support plate facing the window has a portion of the filter member positioned on an optical axis of the photographing lens. The information indicating the type is displayed. In addition, according to the present invention, the information indicating the type of the filter member is constituted by the same member as the filter member attached to the support plate and located on the optical axis of the photographing lens. It is characterized by being. Further, the invention is characterized in that the portion of the support plate is an outer peripheral portion of the support plate. Further, the invention is characterized in that the support means includes a support member that rotatably supports the support plate toward the camera. Further, the present invention is characterized in that positioning means for positioning each of the filter members on the optical axis of the photographing lens is provided. Further, the present invention is characterized in that the positioning means is a click mechanism provided between the support plate and the support member. Further, the present invention provides a positioning detecting means for detecting whether or not the filter member is positioned on the optical axis of the photographing lens by the positioning means, and the filter member is configured to detect the light of the photographing lens by the positioning detecting means. A photographing prohibiting unit for prohibiting a photographing operation of the camera when it is detected that the camera is not positioned on the axis. Also, the present invention
The positioning means is a click mechanism provided between the support plate and a support member, and the click mechanism includes a concave portion formed on an outer peripheral portion of the support plate, and a portion facing the outer peripheral portion of the support plate. With a click spring arranged,
The click spring has a protrusion provided to be detachable from the recess, and the protrusion is configured to be urged by the click spring in a direction in which the click spring is engaged with the recess. A first contact piece, wherein the convex portion of the click spring is engaged with and disengaged from the concave portion of the support plate;
A second contact piece that comes into contact with and separates from the contact piece; and the positioning detecting means is composed of the first contact piece and the second contact piece, and whether the filter member is positioned on the optical axis of the photographing lens. The detection of the presence or absence is performed by an open / close signal generated by the first contact piece and the second contact piece. Further, in the invention, it is preferable that the support member is detachably provided outside a cover of the camera. Further, according to the present invention, the support member includes an upper surface portion and a lower surface portion detachably fitted to an upper surface portion and a lower surface portion of the camera cover, and a front surface portion connecting the front ends of the upper surface portion and the lower surface portion. And a support plate is supported on the front surface. Further, according to the present invention, the support member and the support plate are housed inside a cover of the camera, and the cover is provided with a photographing window at a position in front of the photographing lens, The support plate is provided between a window and the taking lens. Further, the present invention is characterized in that a detecting means for outputting detection information corresponding to a type of the filter member positioned on an optical path of the photographing lens is provided. Also,
According to the present invention, the detecting means is displaced by a fixing contact piece disposed on the support member so as to face an outer peripheral portion of the support plate, and unevenness formed on an outer peripheral portion of the support plate. It has a switch constituted by the fixed contact piece and a movable contact piece which comes and goes, and is constituted so that the detection information may be generated based on opening and closing of the switch. Further, the present invention includes a display provided at a position facing the outer surface of the cover, and is configured to display the type of the filter member on the display based on the detection information. . Further, the invention is characterized in that one of the filter members is formed of a material having a light shielding property. Further, according to the present invention, one of the filter members is formed of a material having a light-shielding property, and it is determined based on the detection information that the filter member having the light-shielding property is positioned on an optical path of the photographing lens. In some cases, a power control unit for cutting off the power supply to the camera is provided. Also, the present invention
A storage unit for storing a shooting program diagram for determining a shutter speed and an aperture during shooting corresponding to each of the filter members; and selecting the shooting program diagram from the storage unit based on the detection information. And a photographing control means for controlling a photographing operation based on the selected photographing program diagram. Further, the present invention is configured such that a portion of the support plate is located at a position in front of a light receiving unit constituting an exposure meter, and a portion of the support plate is located on an optical axis of the photographing lens. The filter member is formed of the same member as the above. Further, according to the present invention, one of the portions of the support plate where the filter member is disposed is a through hole, and the through hole is selectively provided on the optical axis of the photographing lens and at a position in front of the photographing lens. It is configured to be located. Further, the present invention provides a camera including a photographic optical system having a photographic lens, wherein a plurality of types of filter members and each of the filter members are selectively located on an optical axis of the photographic lens and in front of the photographic lens. Supporting means for supporting the filter member so as to be located at, positioning means for positioning each of the filter members on the optical axis of the photographing lens, and positioning on the optical axis of the photographing lens by the positioning means. Filter information generating means for outputting filter information corresponding to the filter member, and recording means for recording information corresponding to each frame of the film in a recording area formed on the film, wherein the recording means comprises: The filter information output from the filter information generating means is configured to be recorded in the recording area. To. Also, in the present invention, the support means has a disk-shaped support plate, and the plurality of filter members are arranged on a circumference centered on the center of the support plate, and the support plate is photographed at the center. The filter member is arranged at a position displaced from the optical axis of the lens, and the filter member is selectively positioned on the optical axis of the photographing lens and in front of the photographing lens by rotating the support plate around its center. It is characterized by having been done. Also, the present invention
The support means includes a support member that rotatably supports the support plate toward the camera. Also,
In the present invention, the positioning means includes a click mechanism provided between the support plate and the support member, wherein the click mechanism includes a concave portion formed on an outer peripheral portion of the support plate, And a click spring disposed at a position facing the outer peripheral portion of the click spring. The click spring has a convex portion provided to be detachable from the concave portion, and the convex portion is engaged with the concave portion by the click spring. It is characterized in that it is configured to be urged in the direction in which it fits. Further, according to the present invention, the support member and the support plate are housed inside a cover of the camera, and the cover is provided with a photographing window at a position in front of the photographing lens, The support plate is provided between a window and the taking lens. Further, in the present invention, the filter information generating unit may be displaced by a fixed contact piece provided on the support member so as to face an outer peripheral portion of the support plate and unevenness formed on an outer peripheral portion of the support plate. Having a switch constituted by the fixed contact piece and a movable contact piece which comes and goes, and is configured to generate the filter information based on the opening and closing of the switch. I do. Further, according to the present invention, the filter information includes:
The information includes information indicating a type of the filter member. Further, in the invention, it is preferable that the filter information includes information indicating an exposure multiple corresponding to the filter member. Further, in the invention, it is preferable that the filter information includes information indicating a color of the filter member.
Further, the present invention is characterized in that the filter information includes information indicating that at least one of exposure correction and color correction when printing the image of the film on photographic paper is prohibited. Further, according to the present invention, one of the portions of the support plate where the filter member is disposed is a through hole, and the through hole is selectively provided on the optical axis of the photographing lens and at a position in front of the photographing lens. And the filter information generating means is configured to, when the through hole is positioned on the optical axis of the taking lens by the positioning means, include the filter information including information indicating that a filter is not used. And outputting the filter information including information indicating the use of the filter when the filter member is positioned on the optical axis of the photographing lens by the positioning means. I do. Further, the present invention is configured such that the information recorded in the recording area of the film by the recording means can be read by a reading means provided in a printer apparatus for printing an image of the film on photographic paper, Is controlled based on the filter information included in the information read by the reading unit. Further, the present invention is characterized in that the printer device is configured to print the filter information included in the information read by the reading means on the photographic paper. Further, the present invention is characterized in that the recording of the information in the recording area of the film by the recording means is performed magnetically or optically. Further, the present invention is characterized in that the reading of the information from the recording area of the film by the reading means is performed magnetically or optically.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing a first embodiment of a filter switching mechanism of a camera according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG.

First, a schematic configuration of a camera will be described with reference to FIGS. The camera body 100 includes a cover 1
02, and the front part 10 of the cover 102.
A photographing window 104 is provided at the center of 2A, and a photographing lens 106 is provided behind it. The front part 10
2A, an exposure meter window 108, a finder window 110, and a flash window 111 are provided. Behind the exposure meter window 108, a light receiving element (not shown) constituting the exposure meter is provided. Behind the finder window 110, a finder optical system 112 is provided. Behind the finder optical system 112, an eyepiece window 114 provided on the back surface 102B of the cover 102 is located. An unillustrated strobe is provided behind the strobe window 111.

[0007] A release button 116 and a display 118 are provided on the upper surface 102C of the cover 102. The display 118 displays the shooting information of the camera and the like, and also displays the type of the filter member as described later, and is constituted by, for example, a liquid crystal display. At the connection between the front end of the lower surface 102D of the cover 102 and the lower end of the front surface 102A, an opening 120 for switching a filter, which will be described later, is provided.

Next, the configuration of the filter switching mechanism will be described with reference to FIGS. FIG. 3 is an explanatory diagram of the operation of the filter switching mechanism, and shows a state in which the front portion 102A of the cover 102 of the camera body 100 is viewed from the rear side. The filter switching mechanism 200 includes the support plate 2
02, filter members 204A and 204B, support shaft 206,
Click spring 208, first to third switches 210A,
210B, 210C and the like.

The support plate 202 has a disk shape, and the support plate 2
02 on the circumference centered on the center of 02
2B and 202C are provided. A filter member 204A is attached to the through hole 202A, and a filter member 204B is attached to the through hole 202B. Through hole 202
Nothing is attached to C, and it is plain.

The support shaft 206 is provided at a position displaced from the optical axis 106A of the photographing lens 106 on the inner side of the front surface portion 102A, and rotatably supports the support plate 202 at its center. The support plate 202 is rotated about a support shaft 206 so that the filter members 204A, 204B
And the position of the through hole 202C is the optical axis 10 of the photographing lens 106.
It is configured to be selectively located on 6A and in front of the taking lens 106. The outer peripheral portion of the support plate 202 is disposed so that a part thereof is exposed from the opening 120, and the support plate 202 is rotated about the support shaft 206 by moving the exposed portion with a finger. Is available. That is, a support member that rotatably supports the support plate 202 on the camera side is configured by the support shaft 206 and the front portion 102A, and a support unit that supports a filter member described later is configured by the support member and the support plate. I have.

The outer peripheral portion of the support plate 202 is configured to face the finder window 110. Finder window 11
0, the optical axis 10 of the taking lens 106A
6A, filter members 204A, 204B
And the same members 216A and 216B, respectively. Further, the through-hole 2 where no filter member is attached is provided.
A transparent member 216C is attached to an outer peripheral portion facing the finder window 110 corresponding to 02C. That is, information indicating the type of the filter member is displayed at a position on the outer peripheral portion of the support plate 202 facing the finder window 110,
This information is constituted by the same member as the filter member which is attached to the portion of the support plate and is located on the optical axis of the taking lens. In other words, the display means for displaying the type of the filter member located on the optical axis of the photographing lens is configured by the outer peripheral portion of the support plate 202 on which the information indicating the type of the filter member is displayed. .

At the outer peripheral portion of the support plate 202, three concave portions 203 are formed, and inside the front portion 102A, a click spring 208 is disposed at a position facing the outer peripheral portion of the support plate 202. . The click spring 208 has a convex portion 208A provided so as to be capable of engaging and disengaging with the concave portion 203. The convex portion 208A is urged by the click spring 208 in a direction to engage with the concave portion 203, and the convex portion 208A is engaged with the concave portion 203. By combining, each of the filter members is configured to be positioned on the optical axis 106A of the taking lens 106. That is, a click mechanism is configured between the support plate 202 and the inside (support member) of the front surface portion 102A. This click mechanism constitutes positioning means for positioning each of the filter members on the optical axis of the taking lens.

Further, two convex portions 207A and 207B are formed on the outer peripheral portion of the support plate 202, and come into contact with movable contact pieces 214A and 214C of first and third switches 210A and 210C described below. These are configured to be displaced.

The first switch 210A is displaced by a fixed contact piece 212A disposed inside the front surface 102A so as to face the outer peripheral portion of the support plate 202 and unevenness formed on the outer peripheral portion of the support plate 202. Fixing piece 21
2A and a movable contact piece 214A that comes and goes.

The second switch 210B includes a fixed contact 212B (corresponding to a second contact in the claims) disposed inside the front surface 102A so as to face the outer peripheral portion of the support plate 202, It is constituted by a movable contact piece 214B (corresponding to a first contact piece in the claims) that comes into contact with and separates from the fixed contact piece 212A by being displaced by unevenness formed on the outer peripheral portion of the plate 202.

The third switch 210C is displaced by a fixed contact piece 212C provided inside the front surface portion 102A so as to face the outer peripheral portion of the support plate 202, and unevenness formed on the outer peripheral portion of the support plate 202. Fixing piece 21
It is composed of a movable contact piece 214C that comes in contact with and separates from 2C. The movable contact piece 214C is formed integrally with the click spring 208.

First to third switches 210A to 210A
C is configured to output an open / close signal when the fixed contact piece and the movable contact piece come and go, and these open / close signals are input to a CPU (not shown). That is, as shown in FIG. 5, when the movable contact piece 214A of the first switch 210A is displaced by the convex portion 207A of the support plate 202, the movable contact piece 214A separates from the fixed contact piece 212A and opens and closes the first switch 210A. Is turned off.

Also, as shown in FIG.
The movable contact 214 </ b> C of 10 </ b> C is
When it is displaced by 7B, it is configured to separate from the fixed contact piece 212C and turn off the open / close signal of the third switch 210C.

The movable contact 2 of the second switch 210B
14B is formed in the vicinity of the convex portion 208A of the click spring 208. The convex portion 208A comes into contact with the fixed contact piece 212B only when the convex portion 208A is engaged with the concave portion 203 of the support plate 202. When it is in a disengaged state with 203, it is separated from the fixed contact piece 212B. That is, the second switch 210B turns on the open / close signal when each of the filter members is positioned on the optical axis of the photographing lens, and turns off the open / close signal otherwise.

As shown in FIG. 6, the types of the filter members (filter A, filter B, no filter) located on the optical axis 106A of the photographing lens 106 and in front of the photographing lens 106, and each switch 210A to 210
The combination of the open / close signal of C corresponds. Note that the filter A corresponds to the filter member 204A, and the filter B corresponds to the filter member 204B. The CPU determines the type of the filter member located on the optical axis 106A of the photographing lens 106 and in front of the photographing lens 106 based on a combination of the opening / closing signals of the switches, and displays based on the result of the determination. The device 118 is configured to display the type of the filter member. That is, each of the switches 210A to 210C constitutes a detection unit that outputs detection information composed of a combination of open / close signals.

As shown in FIG. 7, a display 118 provided on the upper surface portion 102C of the camera body 100 is configured to display a filter A and a filter B. Displaying one of them indicates the type of filter, and hiding both filters A and B indicates no filter. Note that FIG. 7 shows a state in which the display 118 performs all displays (all-lit state).

Further, the CPU determines whether each of the filter members is positioned on the optical axis 106A of the photographing lens 106 based on whether the open / close signal output from the second switch 210B is ON or OFF, When it is determined that each of the filter members is not positioned on the optical axis of the photographing lens, the release button 1 of the camera
The camera is controlled so that the operation 16 is invalidated, that is, the photographing operation is prohibited.
This is to prevent erroneous photographing when the filter member is not positioned in front of the photographing lens 106 on the optical axis. Here, the second switch 210B corresponds to the positioning detecting means in the claims, and the CPU corresponds to the photographing inhibiting means in the claims.

Next, the function and effect will be described with reference to FIGS. The photographer puts a finger on the outer peripheral portion of the support plate 202 exposed from the opening 120 and
By turning, the filter member located in front of the photographing lens 106 can be switched. At this time, each of the filter members is positioned on the optical axis 106A of the photographing lens 106 by the action of the above-described click mechanism.

The optical axis 106A of the photographing lens 106
The type of the filter member positioned above can be known as follows. FIG. 3 shows a state in which the through-hole 202 </ b> C is located in front of the taking lens 106. In this case, since the transparent member 216 </ b> C of the outer peripheral portion of the support plate 202 faces the finder window 110, the photographer can see that there is no filter by looking at the eyepiece window 114. At this time, as shown in FIG.
Since 10A is ON, the second switch 210B is ON, and the third switch 210C is OFF, the CPU does not display any of the filters A and B on the display 118 depending on the combination of the respective open / close signals. .
Therefore, it can be seen that the photographer does not use the filter from outside the camera.

FIG. 4 shows a state where the filter member 202A (filter A) is located in front of the taking lens 106. In this case, since the same member 216A as the filter member 202A faces the finder window 110 out of the outer peripheral portion of the support plate 202, the photographer can use the eyepiece window 114.
, It can be seen that the filter A is used.
At this time, as shown in FIG.
N, the second switch 210B is ON, the third switch 210
Since C is ON, the CPU displays only the filter A on the display 118 according to the combination of the respective open / close signals. Therefore, it can be seen that the photographer also uses the filter A from outside the camera.

FIG. 5 shows a state in which the filter member 202B (filter B) is located in front of the taking lens 106. In this case, since the same member 216 </ b> B as the filter member 202 </ b> B of the outer peripheral portion of the support plate 202 faces the finder window 110, the photographer can use the eyepiece window 114.
, It can be seen that the filter B is used.
At this time, the first switch 210A is turned off as shown in FIG.
F, the second switch 210B is ON, the third switch 210
Since C is ON, the CPU displays only the filter B on the display 118 according to the combination of the respective open / close signals. Therefore, the photographer knows that the filter B is used from outside the camera.

Next, a modified example of the first embodiment will be described. FIG. 8 is an explanatory diagram of the operation when the front portion 102A of the cover 102 is viewed from the back, and FIG. 9 is an explanatory diagram of the field of view of the eyepiece window. That is, as shown in FIG. 8, the outer peripheral portion of the support plate 202 is configured to face the finder window 110.
On the outer peripheral portion facing the finder window 110, a photographing lens 1 is provided.
Filter member 2 located on optical axis 106A of 06A
Character 217A for displaying 04A, 204B
(“A”) and 217B (“B”). In addition, the through-hole 20 to which no filter member is attached is provided.
A transparent member 216C is attached to an outer peripheral portion facing the finder window 110 corresponding to 2C.

Therefore, FIGS. 9A, 9B, and 9C
As shown in FIG. 5, the letter “A” corresponding to the filter A, the letter “B” corresponding to the filter B,
Each of the transparent members 216C can be seen correspondingly without the filter. That is, the finder window 11
Information indicating the type of the filter member is shown, for example, in the form of characters at a position on the outer peripheral portion of the support plate 202 facing 0. The information indicating the type of the filter member may be pictograms, symbols, etc. in addition to characters. As described above, the display means for displaying the type of the filter member located on the optical axis of the photographing lens is configured by the portion of the outer peripheral portion of the support plate 202 on which the information indicating the type of the filter member is displayed. ing.

Next, a second embodiment will be described. When photographing using a filter, it is necessary to adjust the aperture and exposure of the camera according to the optical characteristics of the filter. For example, in a filter that obtains a soft focus effect or a cross filter that provides a cross light beam to a point light source or the like, it is necessary to minimize the aperture in order to obtain a sufficient filter effect. In the case of a dark color filter, it is necessary to adjust the camera to the exposure multiple of the filter in order to obtain an appropriate exposure. Therefore, the photographer must adjust the aperture and the exposure in accordance with the filter, which has a disadvantage that the operation is complicated. In the second embodiment described below, in order to eliminate such a drawback, the program diagram of the camera is switched according to the type of the filter member located in front of the photographing lens.

The filter switching mechanism according to the second embodiment has substantially the same configuration as the filter switching mechanism according to the first embodiment, and will be described with reference to FIGS. In the second embodiment, the filter member 204
A (filter A) is a dark color filter, and the filter member 204B (filter B) is a soft focus filter for obtaining a soft focus effect.

FIG. 10 is a photographing program diagram for determining the shutter speed and aperture during photographing. In the figure, TV indicates a shutter speed, AV indicates an aperture value, and EV indicates an exposure value. A photographing program C indicated by a solid line corresponds to no filter, a program A indicated by a broken line corresponds to the filter A, and a program B indicated by a dashed line corresponds to the filter B. That is, in the photographing program A corresponding to the filter A, which is a dark color filter, the exposure is increased by an exposure multiple of the dark color filter in an area where the shutter speed becomes higher than about 1/60 as compared with the program C. It is set to shift in the direction. In addition, the photographing program B corresponding to the filter B which is a soft focus filter has an aperture that is an open aperture or a value close to the open aperture in a region where the shutter speed is increased from about 1/30 as compared with the program C. Is set to

These photographing programs A, B, and C are stored in storage means (not shown) built in the camera body. Then, a shooting control means (not shown) including a CPU built in the camera, as shown in FIG.
Based on the combination of the opening / closing signals of the third to fourth switches 210A to 210C, a photographing program diagram corresponding to the filter member located in front of the photographing lens 106 is selected from the storage unit, and the selected photographing program diagram is The photographing operation is controlled based on this. FIG.
The correspondence between the combination of the open / close signals of the switches 210A to 210C and the filters A, B, and no filter shown in FIG.

Next, a third embodiment will be described. FIG. 12 is an external perspective view showing a third embodiment of the filter switching mechanism of the camera of the present invention, and FIGS.
Is a front portion 102A of a cover 102 of the camera body 100.
FIG. 5 is an operation explanatory diagram of the device viewed from the back side. 12 to 15, the same parts as those described in FIGS. 1 to 5 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 12, an exposure meter window 108A is provided on the front surface portion 102A of the camera body 100, and a light receiving element (light receiving device in the claims) constituting an exposure meter is provided behind the exposure meter window 108A. 13 (FIG. 13)
To FIG. 15). The portion of the support plate 202 is configured to be located in front of the light receiving element 222, and the portion of the support plate 202 is the same as the filter member located on the optical axis 106A of the taking lens 106. It is formed of a member.

As shown in FIG. 13, in the third embodiment, a filter member 204A is attached to a through hole 202A provided in a support plate 202, and
No filter member is attached to C, and C is transparent. A barrier 205 made of a material having a light-shielding property is attached to the through hole 202B.

The support plate 2 facing the finder window 110
02, the optical axis 106 of the photographing lens 106A
A, the filter member 204A located on A, the barrier 20
5, the same members 216A and 205A are attached. Further, a transparent member 216C is attached to an outer peripheral portion facing the finder window 110 corresponding to the through hole 202C where the filter member is not attached. That is, information indicating the type of the filter member is displayed at the outer peripheral portion of the support plate 202 facing the finder window 110, and this information is based on the light of the photographing lens attached to the support plate portion. It is composed of the same member as the filter member located on the shaft.

The support plate 202 is configured so as to be located in front of the light receiving element 222.
Through holes 218A to 218C are provided in a portion of the support plate 202 located in front of the light receiving element 222, and these through holes 218A to 218C are located on the optical axis 106A of the photographing lens 106, respectively. 220A, barrier 205 which is the same as filter member 204A
The same member 220B and transparent member 220C are attached. That is, the light receiving element 2 is provided in the through hole 218C corresponding to the through hole 202C in which the filter member is not attached.
22 is provided with a transparent member 220C that allows light to pass therethrough without reducing the amount of light.

As shown in FIG. 13, the configuration of the first to third switches 210A to 210C in the third embodiment is the same as that described in the first and second embodiments. However, on the outer peripheral portion of the support plate 202, a convex portion 207C for displacing the movable contact piece 214A of the first switch 210A to turn off the first switch and a movable contact piece 214C for the third switch 210C are displaced. A projection 207D for turning off the third switch is formed.

As shown in FIG. 16, the types of the filter members (barrier, filter, and the like) located on the optical axis 106A of the taking lens 106 and in front of the taking lens 106 are shown.
No filter) and a combination of the opening / closing signals of the switches 210A to 210C correspond to each other.
The filter corresponds to the filter member 204A. A CPU (corresponding to a power supply control means in the claims) built in the camera body 100 controls the optical axis 1 of the photographing lens 106 based on a combination of open / close signals of each switch.
The type of the filter member located on the position 06A and in front of the photographing lens 106 is identified, and on / off control of the power supply of the camera body 100 is performed based on the identification result.

Next, the function and effect will be described with reference to FIGS. FIG. 13 shows a state where the barrier 205 is located in front of the photographing lens 106. In this case, the imaging window 104 is closed by the barrier 205, and the imaging lens 106 is protected. Since the same member 205A as the barrier faces the outer peripheral portion of the support plate 202 at the finder window 110, the photographer can see from the eyepiece window 114 that he is in the non-photographing state.

At this time, as shown in FIG.
10A is ON, the second switch 210B is ON, and the third switch 210C is OFF.
0 is turned off. Also, the light receiving element 22
Since the same member 205A as the barrier 205 is located in front of 2, the light to the light receiving element 222 is blocked.

FIG. 14 shows a state in which the through-hole 202C is located in front of the photographing lens 106. In this case, since the transparent member 216 </ b> C faces the finder window 110 in the outer peripheral portion of the support plate 202,
Looking at the eyepiece window 114 indicates that there is no filter. At this time, as shown in FIG.
Is ON, the second switch 210B is ON, the third switch 2
Since 10C is ON, the CPU turns on the power supply of the camera body 100 and sets the camera in a state where the camera can take a picture according to the combination of the respective open / close signals. The transparent member 22 is located in front of the light receiving element 222.
Since 0C is located, light is incident on the light receiving element 222, and the exposure meter 222 can perform a normal photometric operation.

FIG. 15 shows a state in which the filter member 204A is located in front of the taking lens 106. In this case, since the same member 216A as the filter member 204A of the outer peripheral portion of the support plate 202 faces the finder window 110, the photographer uses the filter by looking at the eyepiece window 114. You can see that. At this time, FIG.
Since the first switch 210A is OFF, the second switch 210B is ON, and the third switch 210C is ON as shown in FIG. 5, the CPU turns on the power supply of the camera body 100 by a combination of the respective open / close signals. The camera is ready to shoot. Since the same member 220A as the filter member 204A is located in front of the light receiving element 222, light passing through the member 220A is incident on the light receiving element 222. It is possible to perform a photometric operation based on the light passing through.

Therefore, in the third embodiment, the power of the camera can be turned off by positioning the barrier 205 in front of the taking lens 106.
Further, a photometric operation based on the light beam that has passed through the filter member can be performed by the exposure meter.

In the above-described first to third embodiments,
The case where the filter switching mechanism is built in the camera cover has been described. Next, a filter switching mechanism configured to be detachable from a camera called a film with a lens will be described.

FIG. 17 is a perspective view from the front showing the fourth embodiment, FIG. 18 is a perspective view from the back, and FIG. 19 is a front view, all showing a state in which a filter switching mechanism is mounted on the camera. ing.

First, the schematic structure of the camera will be described with reference to FIGS. The camera body 300
The cover 302 is covered with a photographing window 304 provided at the center of the front surface 302A of the cover 302, and a photographing lens 306 is provided behind the photographing window 304.

Further, a finder window 308 and a flash window 310 are provided on the front surface 302A. Behind the finder window 308, a finder optical system (not shown) is provided. Behind the viewfinder optical system, a cover 3
The eyepiece window 312 provided on the back surface 302B of the camera No. 02 is located. A flash (not shown) is provided behind the flash window 310. Further, a film winding dial 314 is disposed on the back surface 302B in a state where a part of an outer peripheral portion thereof is exposed. Upper surface 30 of cover 302
A release button 316 is provided on 2C. Three
02D is the lower surface of the cover 302.

Next, the configuration of the filter switching mechanism will be described with reference to FIGS. Note that FIG.
In FIG. 19 to FIG. 19, the same or corresponding parts as those in the first to third embodiments are denoted by the same reference numerals and described. The filter switching mechanism 200A includes a support member 2
30, support plate 202, filter members 204A, 204
B, 204C, a support shaft 206, a click spring 208, and the like.

The support member 230 connects the upper surface 232 and the lower surface 236 detachably fitted to the upper surface 302C and the lower surface 302D of the cover 302 of the camera body 300, and connects the front ends of the upper surface 232 and the lower surface 234. And a front portion 234 that is formed. The upper surface portion 232 and the lower surface portion 236 are formed of a material having flexibility. A rear end of the cover 302 of the camera body 300 is provided at a rear end of the upper surface 232 and a lower end 236 of the support member 230.
Corner portion 303A which is a connection portion between 2B and upper surface portion 302C
Locking portions 232A and 232A that lock the corner portion 303B, which is a connection portion between the back surface portion 302B and the lower surface portion 302D.
36A are provided. A support shaft 206 that supports the support plate 202 is provided on the back side of the front part 234 of the support member 230.

A window 238 is provided on the front surface 234 of the support member 230 at a position corresponding to the front of the finder window 308 of the camera, and a window 240 is provided at a position corresponding to the front of the photographing lens 306. ing.

The support plate 202 has a disk shape, and the support plate 2
02 on the circumference centered on the center of 02
2B and 202C are provided. A filter member 204A is attached to the through hole 202A, a filter member 204B is attached to the through hole 202B, and a filter member 204C is attached to the through hole 202C. Support shaft 206
Is provided on the rear side of the front part 234 of the support member 230 at a position displaced from the optical axis of the photographing lens 306, and rotatably supports the support plate 202 at its center.

When the support plate 202 rotates about the support shaft 206, the filter members 204A and 204B are positioned on the optical axis 106A of the photographing lens 106 and the photographing lens 106.
Is configured to be selectively located at a location in front of the. A part of the outer peripheral portion of the support plate 202 is
The support plate 202 is disposed so as to be exposed from one side edge 234A of the front portion 234 of the support 30. The support plate 202 can be rotated about the support shaft 206 by moving the exposed portion with a finger. Has become.

The outer peripheral portion of the support plate 202 is configured to face the finder window 110. Finder window 11
0, the optical axis 10 of the taking lens 106A
6A, the filter members 204A, 204
B, 204C, the same members as 216A and 216, respectively.
B, 216C are attached. That is, information indicating the type of the filter member is displayed at the outer peripheral portion of the support plate 202 facing the finder window 110, and this information is based on the light of the photographing lens attached to the support plate portion. It is composed of the same member as the filter member located on the shaft.

At the outer peripheral portion of the support plate 202, three concave portions 203 are formed, and the front portion 2 of the support member 230 is formed.
A click spring 208 is disposed on the back side of the portion 34 at a position facing the outer peripheral portion of the support plate 202. The click spring 208 is provided on the projection 20 which is detachably provided with the recess 203.
8A, the projection 208A is urged by the click spring 208 in the direction of engagement with the recess 203, and the projection 208A
Is configured to be positioned on the optical axis of the photographing lens 306 by engaging with the concave portion 203. That is, the support plate 202 and the support member 2
A click mechanism is formed between the click mechanism and the click mechanism 30. This click mechanism constitutes positioning means for positioning each of the filter members on the optical axis of the taking lens.

Next, the function and effect will be described with reference to FIGS. When the switching mechanism 200A is mounted on the camera body 300, the upper surface 2
32 and the lower surface portion 236 of the cover 3 of the camera body 300.
02 is attached to the camera body 300 in accordance with the upper surface 302C and the lower surface 302D. At this time, since the upper surface 232 and the lower surface 236 of the support member 230 are formed of a flexible material, the switching mechanism 200A is connected to the camera body 30 by expanding the upper surface 232 and the lower surface 236.
0 can be easily attached to the cover 302. Further, the locking portions 232A and 236A of the support member 230 are connected to the corners 303A and 303B of the cover 302 of the camera body 300.
And the switching mechanism 2
00A is securely attached to the camera body 300.

Then, the user touches the outer peripheral portion of the support plate 202 exposed from the side edge 234A of the front surface portion 234 of the support member 230 with his / her finger to rotate the support plate 202, thereby obtaining the photographing lens 3
Switching of the filter member located in front of 06 can be performed. At this time, each of the filter members is positioned on the optical axis of the photographing lens 306 by the action of the above-described click mechanism. The photographer can use the support plate 20 exposed from the side edge 234A of the front portion 234 of the support member 230.
By putting a finger on the outer peripheral part of 2 and turning the support plate 202,
The switching of the filter member located in front of the taking lens 306 can be performed. At this time, each of the filter members is positioned on the optical axis of the photographing lens 306 by the action of the above-described click mechanism.

The type of the filter member positioned on the optical axis of the photographing lens 306 can be known in the same manner as in the case described in the first embodiment. That is, in the finder window 308, one of the same members 216A to 216C as the filter member positioned on the optical axis of the photographing lens 306 among the outer peripheral portions of the support plate 202 is provided.
The photographer can see the eyepiece window 312 to know the type of the filter member. As described above, the support plate 202 on which the information indicating the type of the filter member is displayed.
A display means for displaying the type of the filter member located on the optical axis of the taking lens is constituted by the portion of the outer peripheral portion. Also, a filter switching mechanism 200A
When detaching the camera from the camera body 300, the support member 23
The upper surface portion 232 and the lower surface portion 236 of the first
A, 236A and corners 303A, 30 of the camera body 300
If the lock with 3B is released, it can be easily removed.

Next, a modification of the fourth embodiment will be described. FIG. 20 is a diagram illustrating the operation of the filter switching mechanism as viewed from the back of the support member 230, and FIG. 21 is a diagram illustrating the field of view of the eyepiece window. That is, as shown in FIG.
The outer peripheral portion of 2 is configured to face the finder window 308. In the outer peripheral portion facing the finder window 308,
Characters 217A (“A”), 217B (“B”), 217C for displaying the filter members 204A, 204B, 204C located on the optical axis of the photographing lens 306A.
(“C”) are attached.

Therefore, FIGS. 21 (A), (B),
As shown in (C), the letter “A” corresponding to the filter A, the letter “B” corresponding to the filter B, the letter “C” corresponding to the filter B, Each is visible. That is, the finder window 3
At the position of the outer peripheral portion of the support plate 202 facing 08, information indicating the type of the filter member is shown in the form of characters, for example. The information indicating the type of the filter member may be pictograms, symbols, etc. in addition to characters. As described above, the display means for displaying the type of the filter member located on the optical axis of the photographing lens is configured by the portion of the outer peripheral portion of the support plate 202 on which the information indicating the type of the filter member is displayed. ing.

In the first to fourth embodiments described above, the filter members through holes 202A to 202C provided in the support plate 202 are attached. However, the filter is formed by printing or integral molding on one support plate. Is advantageous in that the manufacturing cost is lower than when a separate filter member is attached to the support plate. Further, in the first to fourth embodiments, the click mechanism is used as the positioning means for positioning each of the filter members on the optical axis of the photographing lens, but the present invention is not limited to this. For example, it goes without saying that the positioning means may be constituted by a lock mechanism that locks the support plate so as to position each of the filter members on the optical axis of the taking lens.

When photographing is performed using filters, in order to ensure that the special effects of each filter are reflected when printing on photographic paper, print the film to a photo processing laboratory (lab). In doing so, it is necessary to transmit in detail information (hereinafter, referred to as filter information) such as the type, color, and exposure multiple of the filter used for shooting. However, if the transmission of such filter information is forgotten or incorrectly transmitted, the following inconvenience occurs.

For example, when shooting is performed using a color filter for a special effect, if there is no information indicating that the color filter is used, color correction is erroneously performed at the time of printing, and the special effect is lost. There is a possibility that an improper print will be performed. In the APS camera,
FTPM (Fixed Time)
By setting a printing mode or a series scene mode, information indicating that printing is to be performed under the same conditions at the time of printing is configured to be magnetically recorded. Exposure correction and color correction can be prevented. However, if the photographer forgets the operation of the above-described predetermined mode setting, the same inconvenience may occur. In addition, when all frames of the film are photographed using the same filter, it may be difficult to accurately determine whether or not the filter has been used unless there is information that the filter is used. Sometimes, exposure correction and color correction may be performed by mistake. FTPM is the film cartridge 1
This is a mode in which printing is performed on all frames of a book under the same conditions at the time of printing, and the series scene mode is a mode in which printing is performed on a plurality of frames continuously photographed on a film under the same conditions. In addition, when photographing is performed using a filter at the time of photographing, it may not be easy to confirm what kind of filter has been used even when looking at the printed photographic paper.

In the fifth embodiment described below, when photographing using a filter is performed, unintended exposure correction and color correction are mistakenly performed at the time of printing by recording the filter information on the film. It is possible to prevent
Further, it is possible to easily confirm what kind of filter has been used for shooting by looking at the printed photographic paper. Next, a fifth embodiment will be described. FIG.
Is an external perspective view showing a fifth embodiment of the filter switching mechanism of the camera of the present invention, FIG. 23 is a sectional view taken along the line BB of FIG. 22, and FIG. 24 is a front view of the photographing lens in the fifth embodiment. FIG. 7 is an explanatory diagram showing, in a table form, correspondences between filter information and combinations of the filter members located at the position of No. 1 and the opening / closing signals of the first to third switches and the filter information. Note that the configuration of the filter switching mechanism in the fifth embodiment is basically the same as that of FIGS. 1 to 5 showing the configuration of the first embodiment. The same elements as those in FIG. 5 are denoted by the same reference numerals, and the description thereof will be omitted. The description will focus on those parts that are different from the first embodiment. The configuration and operation of the fifth embodiment will be described with reference to FIGS. 3, 4, and 5.

As shown in FIG. 22 and FIG. 23, inside the camera body 400, a pressure plate 150 which is in contact with and supports the rear surface of the film at a position between the photographing lens 106 and the rear surface portion 102B of the cover 102 is provided. They are arranged along the extending direction. The film surface 160 of the film held by the pressure plate 150 is
And orthogonal. Then, the film 160 of the pressure plate 150
A magnetic head 170 is provided at a position facing the rear surface of the film 160. The magnetic head 170 is formed along the longitudinal direction of the film at the side edge of the rear surface of the film 160 in contact with the pressure plate 150. The information is magnetically recorded in contact with the area.

Further, as shown in FIG.
The type of the filter member (filter A, filter A,
The filter B, no filter) and the combination of the open / close signals of the switches 210A to 210C correspond to each other. The filter A is a filter member 204A.
, And the filter B corresponds to the filter member 204B. Also, the CP built into the camera body 100
U identifies the type of the filter member located on the optical axis 106A of the photographing lens 106 and in front of the photographing lens 106 based on a combination of the open / close signals of the switches 210A to 210C, and The filter information is output to the magnetic head 170 based on the filter information F (F
0, F1, F2). In the fifth embodiment, the CPU and the switches 21
0A to 210C constitute the filter information generating means of the present invention.

As the filter information F, for example, information indicating the type of the filter member, information indicating the multiple of the exposure corresponding to the filter member, information indicating the color of the filter member, and the exposure when the image of the film is printed on photographic paper. And information indicating that at least one of the color correction and the color correction is prohibited, and information indicating use or non-use of the filter. In the example of FIG. 24, the case without a filter, that is,
The filter information F0 when the through-hole 202C is positioned on the optical axis 106A includes information indicating the type of the filter member, information indicating the exposure multiple corresponding to the filter member, information indicating the color of the filter member, and an image of the film. Does not include information indicating that at least one of the exposure correction and the color correction when printing on a photographic paper is prohibited,
Contains information indicating that the filter is not used. In the case of the filters A and B, that is, the filter members 204A and 20A
Filter information F1 and F2 when 4B is positioned on optical axis 106A include information indicating the type of filter member, information indicating the exposure multiple corresponding to the filter member,
Information indicating the color of the filter member, information indicating the use of the filter, and the like are included. In addition, information indicating that at least one of the exposure correction and the color correction when printing the image of the film on the photographic paper is prohibited as necessary. The information indicating that at least one of the exposure correction and the color correction is prohibited is, for example, information that is effectively used when the film is a color film and the filter is a color filter or the like.

Next, the function and effect will be described with reference to FIGS. 3 to 5 and FIGS. 22 to 24. The photographer can switch the filter member located in front of the photographing lens 106 by turning the support plate 202 by putting a finger on the outer peripheral portion of the support plate 202 exposed from the opening 120. At this time, by the action of the click mechanism described above,
Each of the filter members is the optical axis 10 of the taking lens 106.
6A.

FIG. 3 shows a state in which the through-hole 202 C is located in front of the taking lens 106. In this case,
As described above, since the transparent member 216C of the outer peripheral portion of the support plate 202 faces the finder window 110, the photographer can see that there is no filter by looking at the eyepiece window 114, as described above. At this time, the first switch 210A is turned on and the second switch 210 is turned on as shown in FIG.
B is ON and the third switch 210C is OFF. Therefore, when the photographer presses the release button 116 to take a picture, the CPU sets the first to third switches 2
Based on the combination of the open / close signals of 10A to 21C, filter information F0 corresponding to no filter is generated and output to the magnetic head 170. The filter information F0 is magnetically recorded from the magnetic head 170 to the recording area of the film.

FIG. 4 shows a state in which the filter member 202A (filter A) is located in front of the taking lens 106. In this case, since the same member 216A as the filter member 202A faces the finder window 110 out of the outer peripheral portion of the support plate 202, the photographer can use the eyepiece window 114.
The fact that the filter A is used can be understood from the above as described above. At this time, as shown in FIG. 24, the first switch 210A is ON, the second switch 210B is ON, and the third switch 210C is ON. Therefore, when the photographer presses the release button 116 to perform photographing, the CPU generates the filter information F1 corresponding to the filter A based on the combination of the open / close signals of the first to third switches 210A to 21C, and generates the magnetic information. Head 170
Output to The filter information F1 is magnetically recorded in the recording area of the film from the magnetic head 170.

FIG. 5 shows a state in which the filter member 202B (filter B) is located in front of the taking lens 106. In this case, since the same member 216 </ b> B as the filter member 202 </ b> B of the outer peripheral portion of the support plate 202 faces the finder window 110, the photographer can use the eyepiece window 114.
As described above, it can be seen that the filter B is used. At this time, the first switch 210A is turned off and the second switch 210 is turned off as shown in FIG.
B is ON, and the third switch 210C is ON.
Therefore, when the photographer presses the release button 116 to take a picture, the CPU sets the first to third switches 210
The magnetic head 1 generates filter information F2 corresponding to the filter B based on the combination of the open / close signals of A to 21C.
70. The filter information F2 is stored in the magnetic head 17
0 is magnetically recorded in the recording area of the film.

Next, a description will be given of a printer device for printing the image of the film photographed as described above on photographic paper. The printer device is configured to include a printing optical system including an exposure lamp, a condenser lens disposed in front of the exposure lamp, and an enlargement lens disposed in front of the condenser lens.

A film transport path is provided between the condenser lens and the enlargement lens, and a photographic paper transport path is provided in front of the enlargement lens. The printer also includes a CPU, a film transport mechanism for transporting the film along the transport path, a photographic paper transport mechanism for transporting the photographic paper along the transport path, and the like. The CPU controls the optical system for printing, the film transport mechanism, and the photographic paper transport mechanism. In addition, as described later, the printing optical system is controlled based on the filter information read from the film, thereby performing exposure correction and color correction processing operations when printing on photographic paper. And
A magnetic reading head (corresponding to a reading means in claims) for reading a recording area formed along a longitudinal direction of the film at a side edge of the film is disposed near the film transport path. The magnetic read head is configured to read information recorded in a recording area of the film corresponding to each frame of the film.
The information read from the recording area by the magnetic read head includes the above-described filter information.

The CPU performs printing on the photographic paper by controlling the film transport mechanism and the photographic paper transport mechanism, and controlling the exposure of the exposure lamp. That is, the CPU of the printer device is configured to control the printing optical system based on the filter information read by the magnetic reading head to perform a printing operation on photographic paper.

Next, the function and effect will be described. When printing on photographic paper using film with a printer device, set the film on the film transport path,
The information in the recording area is read by a magnetic reading head while the film is transported frame by frame by the film transport mechanism one by one.

Then, based on the read filter information, the exposure lamp is controlled for each frame of the film to expose the film and print on photographic paper. Therefore, in the case of the filter information F0, the exposure correction and the color correction are appropriately performed to perform printing on the photographic paper. On the other hand, when the filter information F1 and F2 indicate that the exposure correction and the color correction are prohibited, the printing is performed on the photographic paper without performing the processing operation of the exposure correction and the color correction.

Then, in order to expose the next one frame, the film is transported by one frame by the film transport mechanism, and one photographic paper is transported by the photographic paper transport mechanism. Hereinafter, printing is performed by repeating the same operation as described above.

That is, according to the fifth embodiment, when shooting is performed using a filter by a camera,
Record the filter information on the film. Then, printing is performed on photographic paper based on the filter information recorded in the recording area of the film. Therefore, it is possible to reliably prevent unintended exposure correction and color correction from being performed erroneously during printing.

The printer device may be configured to print the filter information included in the read information in a display form such as a character, a symbol, or a code on a predetermined portion of the photographic paper. If the printer device is configured as described above, the filter information is recorded on the photographic paper, so whether or not to use the filter at the time of photographing and what kind of filter was used for photographing just by looking at the photographic paper Can be easily confirmed.

In the fifth embodiment, an example has been described in which information is recorded and read magnetically in the recording area of the film. However, information is recorded and read optically in the recording area of the film. Of course, you can do it. Further, in the fifth embodiment, a camera in which the photographing optical system and the finder optical system are provided independently of each other has been described as an example. However, a part of the optical path of the photographing optical system such as a single-lens reflex camera has a finder optical system. Needless to say, the present invention can be applied to a camera configured to be connected to a system.

[0081]

As is clear from the above description, the present invention
In a camera including a photographic optical system having a photographic lens and a finder optical system having a finder window, a plurality of types of filter members are provided, and each of the filter members is provided on the optical axis of the photographic lens and in front of the photographic lens. Support means for supporting the filter member so as to be selectively located at a location is provided, and the support means includes a display means for displaying the type of the filter member located at a location in front of the photographing lens in the finder window. The configuration was provided. Therefore, in a camera in which the optical paths of the photographing optical system and the finder optical system are separately provided, a plurality of types of filter members are supported so as to be selectively located on the optical axis of the photographing lens and in front of the photographing lens. In addition, since the type of the filter member located in front of the photographing lens is displayed in the finder window, it is possible to easily perform photographing by switching a plurality of filters, and to prevent a filter selection error. Can be.

Further, according to the present invention, there is provided a camera provided with a photographic optical system having a photographic lens, wherein a plurality of types of filter members are disposed on the optical axis of the photographic lens and in front of the photographic lens. Support means for supporting the filter member so as to be selectively located in;
Positioning means for positioning each of the filter members on the optical axis of the photographic lens; and filter information generation for outputting filter information corresponding to the filter member positioned on the optical axis of the photographic lens by the positioning means. Means, and recording means for recording information corresponding to each frame of the film in a recording area formed on the film, wherein the recording means stores the filter information output from the filter information generating means in the recording area. It was configured to be recorded in. Therefore, when photographing is performed by switching a plurality of filters, the filter information is recorded in the recording area of the film by the recording means. By reading the filter information recorded in the recording area of the film, it is possible to perform printing on photographic paper based on the filter information, for example, to prevent unintended exposure correction and color correction from being performed accidentally during printing. This can be prevented.

[Brief description of the drawings]

FIG. 1 is a first diagram illustrating a filter switching mechanism of a camera according to the present invention.
It is an external appearance perspective view which shows embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a diagram illustrating the operation of a filter switching mechanism.

FIG. 4 is a diagram illustrating the operation of a filter switching mechanism.

FIG. 5 is an explanatory diagram of an operation of a filter switching mechanism.

FIG. 6 is an explanatory diagram showing, in a table form, correspondence between a combination of a filter member located in front of a photographing lens, opening / closing signals of first to third switches, and an external display.

FIG. 7 is an explanatory diagram showing an upper surface portion of the camera body.

FIG. 8 is an operation explanatory diagram showing a modification of the first embodiment.

FIG. 9 is an explanatory diagram of a field of view of an eyepiece window according to a modification of the first embodiment.

FIG. 10 is a photographing program diagram for determining a shutter speed and an aperture during photographing according to a second embodiment of the filter switching mechanism of the camera of the present invention.

FIG. 11 is an explanatory diagram showing, in a table form, a correspondence between a combination of a filter member located in front of a photographing lens, opening / closing signals of first to third switches, and a photographing program according to the second embodiment. .

FIG. 12 is an external perspective view showing a third embodiment of the filter switching mechanism of the camera according to the present invention.

FIG. 13 is an explanatory diagram of an operation of a filter switching mechanism according to a third embodiment.

FIG. 14 is a diagram illustrating the operation of a filter switching mechanism according to a third embodiment.

FIG. 15 is an explanatory diagram of an operation of a filter switching mechanism according to the third embodiment.

FIG. 16 shows a combination of a filter member located in front of a photographing lens, opening / closing signals of first to third switches, and ON / OFF of a camera power supply according to the third embodiment.
It is explanatory drawing which shows the correspondence of F in tabular form.

FIG. 17 is an external perspective view showing a fourth embodiment of the filter switching mechanism of the camera according to the present invention, as viewed from the front.

18 is an external perspective view of the filter switching mechanism of FIG. 17 as viewed from the back.

FIG. 19 is a front view of the filter switching mechanism in FIG. 17;

FIG. 20 is an explanatory diagram of an operation of a filter switching mechanism according to the fourth embodiment.

FIG. 21 is an explanatory diagram of a field of view of an eyepiece window according to a fourth embodiment.

FIG. 22 is an external perspective view showing a fifth embodiment of the filter switching mechanism of the camera of the present invention.

FIG. 23 is a sectional view taken along line BB of FIG. 22;

FIG. 24 is an explanatory diagram showing, in a table form, correspondence between a combination of a filter member located in front of a photographing lens, open / close signals of first to third switches, and filter information in a fifth embodiment. .

[Explanation of symbols]

 100, 300, 400 Camera body 106 Photographing lens 110 Viewfinder window 170 Magnetic head (recording means) 200, 200A Filter switching mechanism 202 Support plate 202A, 202B, 202C Through hole 204A, 204B, 204C Filter member 205 Barrier 206 Support shaft 230 Support Element

Claims (36)

[Claims] 1. A camera comprising a photographic optical system having a photographic lens and a finder optical system having a finder window, wherein a plurality of types of filter members are provided, each of which is located on an optical axis of the photographic lens and Providing support means for supporting the filter member so as to be selectively located at a position in front of the taking lens, wherein the type of the filter member located at a place in front of the taking lens is provided in the viewfinder window. A filter switching mechanism for a camera, further comprising display means for displaying. 2. The support means has a disk-shaped support plate,
The plurality of filter members are arranged on a circumference centered on the center of the support plate, and the support plate is arranged at a position where the center is displaced from the optical axis of the taking lens, and the support plate is centered on the center. 2. The apparatus according to claim 1, wherein the filter member is selectively positioned on the optical axis of the taking lens and in front of the taking lens by rotating.
A filter switching mechanism for the camera according to the above. 3. A type of the filter member, wherein a portion of the support plate faces the finder window, and a portion of the support plate facing the window is located on an optical axis of the photographing lens. 2. A filter switching mechanism for a camera according to claim 1, wherein information indicating the following is displayed. 4. The information indicating the type of the filter member,
2. A filter switching mechanism for a camera according to claim 1, wherein said filter switching mechanism is formed of the same member as said filter member, which is attached to a portion of said support plate and located on an optical axis of said taking lens. . 5. The filter switching mechanism according to claim 3, wherein the portion of the support plate is an outer peripheral portion of the support plate. 6. A camera filter switching mechanism according to claim 2, wherein said support means includes a support member for rotatably supporting said support plate on a camera side. . 7. A filter switching mechanism for a camera according to claim 6, further comprising positioning means for positioning each of said filter members on an optical axis of said photographing lens. 8. The camera filter switching mechanism according to claim 7, wherein said positioning means is a click mechanism provided between said support plate and said support member. 9. A positioning detection means for detecting whether or not the filter member is positioned on the optical axis of the photographing lens by the positioning means, and the filter member is moved by the positioning detection means to the optical axis of the photographing lens. The camera filter switching mechanism according to claim 7, further comprising: a photographing prohibiting unit that prohibits a photographing operation of the camera when it is detected that the camera is not positioned above. 10. The positioning mechanism is a click mechanism provided between the support plate and the support member, wherein the click mechanism includes a recess formed in an outer peripheral portion of the support plate, and an outer periphery of the support plate. A click spring disposed at a position facing the portion, wherein the click spring has a convex portion provided detachably with the concave portion, and the convex portion is engaged with the concave portion by the click spring. The click spring has a first contact piece, and the protrusion of the click spring engages with and disengages from the recess of the support plate, so that the click spring contacts and separates from the first contact piece. A second contact piece is provided, and the positioning detecting means is composed of the first contact piece and the second contact piece, and detects whether or not the filter member is positioned on the optical axis of the taking lens. The first contact piece and the second contact piece 10. The camera filter switching mechanism according to claim 9, wherein the switching is performed by an open / close signal generated by the camera. 11. The camera filter switching mechanism according to claim 6, wherein the support member is detachably provided outside a cover of the camera. 12. The support member includes an upper surface and a lower surface detachably fitted to an upper surface and a lower surface of a cover of the camera, and a front surface connecting front ends of the upper surface and the lower surface. 12. A filter switching mechanism for a camera according to claim 11, wherein a support plate is supported on said front portion. 13. The photographing window, wherein the supporting member and the supporting plate are housed inside a cover of the camera, and the cover has a photographing window at a location in front of the photographing lens. 9. The filter switching mechanism according to claim 6, wherein the support plate is provided between the filter and the photographing lens. 14. A filter switching mechanism for a camera according to claim 13, further comprising detection means for outputting detection information corresponding to a type of said filter member positioned on an optical path of said taking lens. 15. The detection means is displaced by a fixed contact piece provided on the support member so as to face an outer peripheral portion of the support plate, and unevenness formed on an outer peripheral portion of the support plate. And a switch configured by the fixed contact and a movable contact that comes and goes, and is configured to generate the detection information based on opening and closing of the switch. A filter switching mechanism for a camera according to claim 14. 16. A display device provided at a position facing an outer surface of the cover, wherein the type of the filter member is displayed on the display device based on the detection information. Item 16. A filter switching mechanism for a camera according to Item 14 or 15. 17. The method according to claim 1, wherein one of the filter members is formed of a material having a light-shielding property.
17. A filter switching mechanism for a camera according to any one of items 3 to 16. 18. One of the filter members is formed of a material having a light-shielding property, and when it is determined based on the detection information that the filter member having the light-shielding property is positioned on the optical path of the photographing lens. 17. The camera filter switching mechanism according to claim 14, further comprising a power control means for cutting off a power supply to the camera. 19. A storage means for storing a photographing program diagram for determining a shutter speed and an aperture at the time of photographing corresponding to each of said filter members, and said photographing program stored in said storage means based on said detection information. 19. The filter switching mechanism according to claim 13, further comprising: a photographing control unit that selects a diagram and controls a photographing operation based on the selected photographing program diagram. 20. A part of the support plate is located at a position in front of a light receiving unit constituting an exposure meter, and the part of the support plate is located on an optical axis of the photographing lens. 19. The filter switching mechanism according to claim 2, wherein the filter member is formed of the same member as the filter member. 21. One of the positions of the support plate where the filter member is disposed is a through hole, and the through hole is selectively located at a position on the optical axis of the taking lens and in front of the taking lens. The camera filter switching mechanism according to any one of claims 2 to 20, wherein the camera filter switching mechanism is configured to perform the following. 22. A camera provided with a photographic optical system having a photographic lens, wherein a plurality of types of filter members are provided, and each of the filter members is selectively located on an optical axis of the photographic lens and in front of the photographic lens. Supporting means for supporting the filter member so as to be positioned; positioning means for positioning each of the filter members on the optical axis of the photographing lens; and positioning on the optical axis of the photographing lens by the positioning means. Filter information generating means for outputting filter information corresponding to the filter member; and recording means for recording information corresponding to each frame of the film in a recording area formed on the film; Is configured to record the filter information output from the information generating means in the recording area, Characteristic camera filter switching mechanism. 23. The support means has a disc-shaped support plate, and the plurality of filter members are arranged on a circumference centered on the center of the support plate, and the support plate has a photographic lens at the center. The filter member is arranged at a position displaced from the optical axis, and the filter member is selectively positioned at a position on the optical axis of the taking lens and in front of the taking lens by rotating the support plate around its center. 23. The filter switching mechanism for a camera according to claim 22, wherein: 24. The camera filter switching mechanism according to claim 23, wherein said support means includes a support member for rotatably supporting said support plate on a camera side. 25. The positioning means comprises a click mechanism provided between the support plate and the support member, wherein the click mechanism includes a recess formed in an outer peripheral portion of the support plate, A click spring disposed at a position facing an outer peripheral portion of the plate, wherein the click spring has a convex portion provided so as to be able to be engaged with and disengaged from the concave portion. 25. The filter switching mechanism for a camera according to claim 24, wherein the filter switching mechanism is configured to be biased in the engaging direction. 26. The camera according to claim 26, wherein the support member and the support plate are housed inside a cover of the camera, and the cover has a shooting window at a location in front of the shooting lens. 26. The support plate is provided between the camera and the photographing lens.
13. The filter switching mechanism according to claim 1. 27. The filter information generating means is displaced by a fixed contact piece provided on the support member so as to face an outer peripheral portion of the support plate, and unevenness formed on an outer peripheral portion of the support plate. A switch configured by the fixed contact and a movable contact that comes and goes, and is configured to generate the filter information based on opening and closing of the switch. A filter switching mechanism for a camera according to any one of claims 23 to 26. 28. The apparatus according to claim 22, wherein the filter information includes information indicating a type of the filter member.
28. The filter switching mechanism for a camera according to any one of claims 27 to 27. 29. The filter switching mechanism according to claim 22, wherein the filter information includes information indicating an exposure multiple corresponding to the filter member. 30. The filter switching mechanism according to claim 22, wherein the filter information includes information indicating a color of the filter member. 31. The apparatus according to claim 22, wherein the filter information includes information indicating that at least one of exposure correction and color correction when printing the image of the film on photographic paper is prohibited. 30. The camera filter switching mechanism according to any one of 30. 32. One of the positions of the support plate where the filter member is disposed is a through hole, and the through hole is selectively located on the optical axis of the taking lens and in front of the taking lens. Wherein the filter information generating means outputs the filter information including information indicating that a filter is not used when the through hole is positioned on the optical axis of the photographing lens by the positioning means. When the filter member is positioned on the optical axis of the taking lens by the positioning means, the filter information including information indicating use of the filter is output. A filter switching mechanism for a camera according to any one of claims 23 to 31. 33. The information recorded in the recording area of the film by the recording means is configured to be readable by a reading means provided in a printer device for printing an image of the film on photographic paper. The printing operation on photographic paper is controlled on the basis of the filter information included in the information read by the reading means. A filter switching mechanism for the camera according to the above. 34. The camera according to claim 33, wherein the printer device is configured to print the filter information included in the information read by the reading unit on the photographic paper. Filter switching mechanism. 35. The apparatus according to claim 22, wherein the recording of the information in the recording area of the film by the recording means is performed magnetically or optically.
35. The filter switching mechanism for a camera according to any one of the items 34 to 34. 36. The camera filter according to claim 33, wherein reading of the information from the recording area of the film by the reading unit is performed magnetically or optically. Switching mechanism.