JP2002006367A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera equipped with a position detecting mechanism for a shielding member capable of restraining the increase of space and cost. SOLUTION: This camera is provided with the shielding member attached to the front surface of a camera main body, shielding a part of the camera main body at the non-using time and moving to open it at the using time, a photographing lens attached to the camera main body and shielded or opened by the action of the shielding member, a light emitting member attached to the camera main body, shielded or opened by the shielding member and emitting light to the outside when it is opened and used as one part of a camera function, a light receiving member attached to the camera main body, receiving the external light and used as one part of the camera function, and a discrminating means making the light receiving part receive reflected light being the light emitted from the light emitting member at the non-using time when it is shielded by the shielding member and reflected from the inner surface of the shielding member and discriminating the shielding state by the shielding member based on the received light.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to an improvement in a camera having a movable shielding member for opening and closing an imaging lens.

[0002]

2. Description of the Related Art In various cameras including an electronic camera, there is known a structure in which a shielding member (lens barrier) is movably mounted on a front surface of a camera body to protect an imaging lens.

The shielding member is positioned so as to shield a part of the camera body when not in use, and is moved to a position to be opened when in use. This movement of the shielding member is usually
Done manually.

Conventionally, in a camera provided with a shielding member, mechanical detecting means interlocked with the shielding member is provided to detect that the shielding member is at a predetermined open position, and the imaging lens is closed by the shielding member. It is structured to avoid the failure of shooting as it is. If the shielding member is not in the open position, it is designed so that no warning is given and no image is taken even if the release is pressed.

[0005]

However, since the mechanical detecting means is composed of switch parts and its mechanical parts, a space for accommodating these parts is required in the camera body or the like, and the size of the entire camera is reduced. Hinder. In addition, assembling with these components is also one of the factors for increasing costs.

An object of the present invention is to provide a camera provided with a position detecting mechanism for a shielding member which suppresses an increase in space and cost.

[0007]

A camera according to the present invention comprises:
A shielding member attached to the front surface of the camera body, which shields a part of the camera body when not in use and moves so as to be opened when used; and a shielding member attached to the camera body and which is shielded or opened by the operation of the shielding member. A light-emitting member attached to the camera body, shielded or opened by the shielding member, emits light to the outside when opened, and is used as a part of a camera function, and the camera A light-receiving member attached to the main body and used as a part of a camera function by receiving external light, and a light reflected from the light-emitting member when not in use, which is shielded by the shielding member, and reflected by the inner surface of the shielding member Light received by the light receiving member, and a judging means for judging a shielding state by the shielding member based on the received light. That.

According to such a configuration, a light emitting member (for example, a self-timer LED, a distance measuring LED) and a light receiving member (for example, an automatic exposure light receiving member, a distance measuring photodiode array) provided in an existing camera are provided. Utilizing, is emitted from the light emitting member when not in use blocked by the shielding member,
By providing the light receiving member with the light reflected by the inner surface of the shielding member and determining the state of shielding by the shielding member based on the received light, mechanical detection means is separately provided as in the related art. The open / closed state of the shielding member can be detected without the need. As a result, it is possible to reduce the size of the camera by eliminating the need for a space for accommodating the mechanical detection means, and to reduce the cost by eliminating the assembly of the components.

[0009] Whether the light incident on the light receiving member is external light or reflected light from the light emitting member is determined, for example, by using a red LED as the light emitting member. It can be easily identified at a particular wavelength.

The camera according to the present invention has the following various forms.

(1) It is preferable that the shielding member has a reflecting surface for reflecting emitted light on its inner surface.

According to such a configuration, even if the intensity of the light emitted from the light emitting member is low, the light reflected by the inner surface of the shielding member is received by the light receiving member, and the judgment means is determined based on the received light. It is possible to determine the shielding state of the shielding member. As a result, power consumption for driving the light emitting member can be reduced.

(2) It is preferable that the light emitting member and the light receiving member are arranged so as to be located at a position of the camera body that is opened later by the movement of the shielding member than the photographing lens.

According to such a configuration, the light emitting member and the light receiving member are arranged so as to be located at a position of the camera main body which is opened later by the movement of the shielding member than the photographing lens. When the shielding member moves from a state where the imaging lens is opened to a position covering a part of the imaging lens, it can be determined that the imaging lens is already shielded by the shielding member. Can be.

In particular, the light emitting member and the light receiving member are arranged side by side in a direction orthogonal to the moving direction of the shielding member at a position of the camera body which is opened later by the movement of the shielding member than the photographing lens. In other words, by arranging the shielding member on the camera body near the open position of the shielding member, it is possible to more reliably prevent a photographing error such as taking an image with the shielding member covering a part of the imaging lens.

(3) The light-emitting member and the light-receiving member, and mechanical detection means for mechanically detecting the movement of the shielding member are provided at the opening start position of the shielding member and when the shielding member is almost completely opened. It is allowed to be arranged at any one of the positions so as to detect the position.

According to such a configuration, the open / closed state of the imaging lens by the shielding member can be reliably detected.
In addition, since the start and end of opening of the shielding member can be specified, the initial setting operation such as a battery check can be completed at the time when the imaging lens is opened by the shielding member or a short time after the time. It is possible to activate the camera in time.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a camera according to the present invention will be described in detail.

(First Embodiment) FIG. 1 is a top view showing a camera (for example, an electronic camera) according to the first embodiment, FIG. 2 is a front view of the electronic camera of FIG. 1, and FIG. 3 is an electronic camera of FIG. FIGS. 4A and 4B are cross-sectional views of a self-timer LED and an automatic exposure (AE) light receiving member in a state in which a shielding member of the camera is opened, and FIG. (B) shows a state of being shielded by a shielding member.

On the front surface of the camera body 1, a shielding member (lens barrier) 3 having a handle 2 is provided. The shielding member 3 shields a part of the camera body 1 when not in use, and moves in the direction of the arrow so as to be opened when in use.

The photographing lens 4 which is shielded or opened by the movement of the shielding member 3 is attached to the camera body 1. A flash window 5 and a finder objective window 6 that are shielded or opened by the movement of the shielding member 3 are attached to the camera body 1 above the imaging lens 4.

A light-emitting member which is shielded or opened by the movement of the shield member 3 and emits light to the outside when opened to be used as a part of the camera function, for example, a self-timer LED 7 which emits red light, As shown in FIGS. 3 and 4A and 4B, the camera body 1 is disposed inside the camera body 1 in the vicinity of an LED window 8 opened in the body 1. The self-timer LED 7 is constantly and intermittently illuminated instantaneously so as to be hard to catch visually.

A light receiving member which is shielded or opened by the movement of the shielding member 3 to receive external light and is used as a part of a camera function, for example, an automatic exposure (AE) light receiving member 9
As shown in FIGS. 3 and 4 (A) and 4 (B), the camera is disposed inside the camera body 1 in the vicinity of the AE light receiving window 10 opened in the body 1. The AE light receiving member 9
Is a single-sided sealed cylindrical housing 11 arranged so that an opening thereof is close to the AE light-receiving window 10, and an AE light-receiving element 12 housed so as to abut on a sealing portion of the housing 11.
And a light receiving lens 1 housed in the vicinity of the opening in the housing 11 for converging light to enter the light receiving element 12.
And 3.

The self-timer LED window 8 and the AE light receiving window 10 are arranged along the moving direction of the shielding member 3 on the camera body 1 between the imaging lens 4 and the finder objective window 6. It is open.

Next, the electronic camera system will be described with reference to the block diagram shown in FIG.

External light from a subject is incident on an image pickup device 102 through a photographing lens system including an image pickup lens 4 and an aperture / shutter 101. The signal photoelectrically converted by the imaging device 102 is output to the imaging circuit 103. The analog signal of the imaging circuit 103 is output to the A / D conversion circuit 10
4 is digitized. The image pickup device 10
2. The imaging means is constituted by the imaging circuit 103 and the A / D conversion circuit 104. The digitized signal is supplied to a removable memory 105, a built-in memory 106, an image processing unit 107.
The data is exchanged with the built-in LCD 108, and is recorded in, for example, the removable memory 105.

The light receiving element 12 of the AE light receiving member 9 is connected to the AE section 109 shown in FIG. This AE part 1
In step 09, signals are exchanged with the system controller 110, and based on the signal from the AE unit 109, the aperture / shutter 101 is controlled by a control signal from the system controller 110. Further, the light receiving element 12 is connected to the shielding member detecting section 111. The shielding member detecting section 111 exchanges signals with the system controller 110. The self-timer LED 7 is connected to the system controller 110.
For example, red light is intermittently emitted according to the control signal from. Light emitted from the self-timer LED 7 is reflected by the inner surface of the shielding member 3 and the reflected light is reflected by the light receiving element 1.
2, a predetermined signal is output from the light receiving element 12 to the shielding member detecting section 111. When a signal is input to the detection unit 111, a signal is output from the detection unit 111 to the system controller 110, and it is determined that the imaging member 4 is shielded by the shielding member 3 in the shielding determination unit 112 of the system controller 110. to decide.

Note that, of the light incident on the light receiving element 12, the external light at the time of automatic exposure is visible light,
Since the reflected light at the time of determining the shielding position is red light having a specific wavelength, it is easy to identify which light has entered the light receiving element 12.

The strobe 113 is connected to the system controller 110,
It is operated by a control signal from 0. The remote control light receiving element 114 is connected to the system controller 110. When a signal from the remote control light receiving element 114 is output to the system controller 110, the aperture / shutter 101 is operated by a control signal from the system controller 110.

Next, the operation of the above-described electronic camera will be described.

As shown in FIGS. 3 and 4A, when the shielding member 3 is manually moved (moved from right to left in FIG. 9) and the imaging lens 4 is opened, photographing becomes possible, and Light is emitted from the AE light receiving window 10 and the AE of the camera body 1.
A signal corresponding to the intensity of the incident light that is incident on the light receiving element 12 through the lens 13 of the light receiving member 9 is transmitted to the AE unit 10 shown in FIG.
The aperture / shutter 101 is controlled by a control signal from a system controller 110 based on the signal from the AE unit 109.

When the imaging member 4 is shielded by manually moving the shielding member 3, red light emitted from the self-timer LED 7, which is always operated, is passed through the LED window 8 as shown in FIG. 3 inner surface (back)
Is irradiated. The reflected light reflected on the inner surface of the shielding member 3 is transmitted to the AE light receiving windows 10 and A adjacent to the LED 7.
The light enters the light receiving element 12 through the lens 13 of the E light receiving member 9, and a predetermined signal is output from the light receiving element 12 to the shielding member detection unit 111. When a signal is input to the detection unit 111, a signal is output from the detection unit 111 to the system controller 110, and it is determined that the imaging member 4 is shielded by the shielding member 3 in the shielding determination unit 112 of the system controller 110. You can judge.

Therefore, utilizing the self-timer LED 7 and the AE light receiving member 9 provided in the existing camera,
And a shielding member detecting section 111 connected to the light receiving element 12 of the AE light receiving member 9 and a system controller 11
Since the shielding state of the shielding member 3 can be determined by the shielding determining unit 112 built in the O. 0, the open / closed state of the shielding member can be detected without separately providing a mechanical detection unit as in the related art. As a result, it is possible to reduce the size of the camera by eliminating the need for a space for accommodating the mechanical detection means, and to reduce the cost by eliminating the assembly of parts.

In the first embodiment described above, FIG.
(A), a large number of fine inclined surfaces 14 may be formed on the inner surface (back surface) of the shielding member 3. According to the configuration shown in FIG. 6A, even if the intensity of light emitted from a light emitting member (for example, a self-timer LED) is low,
By forming a large number of fine inclined surfaces 14 on the inner surface of the shielding member 3, the reflected light can be efficiently incident on the light receiving member (for example, the AE light receiving member), so that the light emitting member is driven. Power consumption can be reduced.

Further, as shown in FIG. 3B, a high reflection member 15 may be formed on the inner surface (back surface) of the shielding member 3 by sticking a reflection tape or plating. FIG. 6
According to the configuration shown in (B), even if the intensity of the light emitted from the light-emitting member (for example, a self-timer LED) is low, the high-reflection member 15 is formed on the inner surface of the shielding member 3 so that the light-emitting member is formed. Light emitted from the high reflection member 15
Since the light can be reflected at a high light intensity when reflected by the light emitting device, power consumption for driving the light emitting member can be reduced.

Although the self-timer LED and the AE light receiving member are used as the light emitting member and the light receiving member in the first embodiment, a remote control light receiving element 33 shown in FIG. 5 may be used as the light receiving member. In addition, as shown in FIG. 7, the distance measuring light emitting element 116 connected to the distance calculating unit 115 for exchanging signals with the system controller 110 is used as a light emitting member, and the distance measuring light receiving element 117 is used as a light receiving member. Is also good.

(Second Embodiment) FIG. 8 is a front view showing a camera (for example, an electronic camera) according to the second embodiment. The same members as those in FIGS. 1 to 3 described above are denoted by the same reference numerals, and description thereof is omitted.

This electronic camera has a self-timer LED
The window 8 and the AE light-receiving window 10 are arranged side by side in a direction orthogonal to the moving direction of the shielding member 3 at a position of the camera body 1 that is opened later by the movement of the shielding member 3 than the taking lens 4, that is, It is arranged on the camera body 1 near the opening position of the shielding member 3. A self-timer LED (not shown) is arranged inside the camera body 1 so as to face the self-timer LED window 8.
An AE light receiving member (not shown) is arranged inside the camera body 1 so as to face the AE light receiving window 10.

According to the second embodiment, it is possible to reliably prevent a photographing error in which a photograph is taken with the shielding member 3 covering a part of the imaging lens 4.

That is, a self-timer LE (not shown)
When the D and AE light receiving members are arranged at the opening start position of the shielding member 3 of the camera body 1, the self-timer LED and the AE light receiving member are opened by the movement of the shielding member 3, that is, the light emitted from the LED is blocked by the shielding member. When the reflected light is not reflected by the inner surface of the AE 3 and the reflected light is not incident on the AE light receiving member, it may be determined that the imaging lens 4 is not shielded by the shielding member 3. In such a situation, it is determined that the imaging lens 4 is not shielded by the shielding member 3 even when a part of the imaging lens 4 is covered, that is, it is determined that the imaging lens 4 is in the open state, There is a possibility that a photographing error may occur such that photographing is performed with the member 3 covering a part of the imaging lens 4.

For this reason, the self-timer LED and the AE light receiving member (not shown) are arranged inside the camera body 1 at a position where the self-timer LED and the AE light receiving member are released later than the photographing lens 4 by the movement of the shielding member 3. Thereby, when the shielding member 3 moves from a state where the imaging lens 4 is opened to a position covering a part of the imaging lens 4, the self-timer LED window 8 of the self-timer LED and the AE light receiving member AE light receiving window 10
Is covered with the shielding member 3. For this reason, as described above, the red light emitted from the self-timer LED, which is always operated, is irradiated on the inner surface (back surface) of the shielding member 3 through the LED window 8, and the reflection reflected on the inner surface of the shielding member 3 Light enters the light receiving element through the AE light receiving window 10 and the AE light receiving member adjacent to the LED, and it can be determined that the imaging lens 4 is shielded by the shielding member 3. Therefore, photographing errors can be reliably prevented.

In particular, at a position where the self-timer LED and the AE light receiving member are opened later by the movement of the shielding member 3 than the photographing lens 4, the self-timer LED and the AE light receiving member are located inside the camera body 1 with respect to the moving direction of the shielding member 3. By arranging the self-timer LED windows 8 and AE of the self-timer LED immediately after the shielding operation of the shielding member 3 by arranging them side by side in the orthogonal direction, that is, arranging them inside the camera body 1 near the open position of the shielding member. A of the light receiving member
The light receiving window 10 for E can be covered with the shielding member 3.
As a result, the red light emitted from the self-timer LED is reflected on the inner surface (back surface) of the shielding member 3, and the reflected light is incident on the light receiving element of the AE light receiving member, and the imaging lens 4 is shielded by the shielding member 3. Since it can be determined that the photographing has been performed, it is possible to more reliably prevent a photographing error such as photographing while covering a part of the imaging lens 4.

(Third Embodiment) FIGS. 9A and 9B
10A is a front view showing a camera (for example, an electronic camera) according to the third embodiment, FIG. 10A shows a state where the camera is shielded by a shielding member, and FIG. 10B shows a state where the shielding member is opened.
FIG. 10 is a cross-sectional view across the mechanical detection means of the electronic camera of FIG. 9. The same members as those in FIGS. 1 to 3 described above are denoted by the same reference numerals, and description thereof is omitted.

Mechanical detection mechanism 2 as mechanical detection means
1 is disposed inside the shielding member 3. The detection mechanism 21 has a cam groove 23 formed on the inner surface of the shielding member 3 in the movement direction thereof and formed by two linear projections 22a and 22b parallel to each other at a desired interval. The lower linear projection 22a has a key shape on the opening start side (right end) of the shielding member 3, and is located at a desired distance from the right end of the upper linear projection 22b. That is, the cam groove 23 has a shape rising upward at the right end side.

A rotating lever 26 having a cam pin 24 projecting from the upper end face and a rotating shaft 25 projecting from the lower end face opposite to the cam pin 24 is disposed between the shielding member 3 and the camera body 1. ing. The cam pin 24
Are engaged with the cam groove 23 of the shielding member. The rotation shaft 25 is provided with an engagement hole 2 opened in the camera body 1.
7 rotatably supported. The operating lever 28 is disposed on the inner surface of the camera body 1 such that the upper end thereof is in contact with the end surface of the rotating shaft 25, and is fixed to the rotating shaft 25 by screws 29. The leaf switch 30 is mounted on the inner surface of the camera body 1 below the operating lever 28. Above the leaf switch 30, a pair of contact pieces 31 is extended toward the operating lever 28 so as to contact the right side surface of the lower end thereof, and a protruding terminal 32 is attached to one of the contact pieces 31. ing. That is,
The leaf switch 30 rotates the operating lever 28 about the rotation shaft 25 with the rotation of the rotation lever 26, and at the lower end side surface, one of the pair of contact pieces 31. 31 (the contact piece on the left side of FIG. 9A) is pressed and the protruding terminal 32 comes into contact with the other contact piece 31 to operate. The leaf switch 30 is connected to the above-described system controller 110 shown in FIG. 5, and determines that the imaging lens 4 is opened when an operation signal of the leaf switch 30 is input.

Next, the operation of the above-described electronic camera will be described.

When the shielding member 3 is manually moved to shield the imaging lens 4 as shown in FIG. 9A, it is constantly operated as shown in FIG. 4B of the first embodiment. Red light emitted from the self-timer LED 7 is passed through the LED window 8 to the inner surface (back surface) of the shielding member 3.
Is irradiated. The reflected light reflected on the inner surface of the shielding member 3 is transmitted to the AE light receiving windows 10 and A adjacent to the LED 7.
E is incident on the light receiving element 12 through the lens 13 of the light receiving member 9, and a predetermined signal is output from the light receiving element 12 in FIG.
Are output to the shielding member detecting section 31 shown in FIG. When a signal is input to the detection unit 31, a signal is output from the detection unit 31 to the system controller 30, and it is determined that the imaging lens 4 is being shielded by the shielding member 3 in the shielding determination unit 32 of the system controller 30. You can judge.

On the other hand, when the imaging lens 4 is manually moved (moved from right to left in FIG. 9) to open, the self-timer LED (not shown)
Window 8 and AE light receiving window 1 of AE light receiving member (not shown)
0 is released first. At this time, the self-timer L
Since the red light emitted from the ED is not incident on the light receiving element of the AE light receiving member, it is possible to detect that the shielding member 3 is starting to open. By detecting such a state by the above-described system controller 110 shown in FIG. 5, the following initial setting operation can be performed by the system controller 110. As a result, it is possible to complete the initial setting operation before starting photographing and start the camera in a short time.

<Example of initial setting operation> Battery check, RAM area clear (reset), Card cover closed, Card presence / absence check, Mechanical initial position setting, EX lens position Is the initial position. ・ Display (control panel; black and white LED, LED, LCD display for back side image).

Further, when the shielding member 3 is moved from the right side to the left side to the opening end position, the cam pin 24 of the rotating lever 26 of the mechanical detection mechanism 21 engages with the cam groove 23 on the inner surface of the shielding member 3. While moving to the upward rising portion shown in FIG. 9B. At this time, the rotation lever 26 rotates around the rotation shaft 25 in, for example, a counterclockwise direction, and accordingly, the operation lever 28 moves to the rotation shaft 25.
Around the center. When the operating lever 28 rotates,
One of the contact pieces 31 of the pair of contact pieces 31
(The contact piece on the left side of FIG. 9B) is pressed and the protruding terminal 32 comes into contact with the other contact piece 31 to operate. This operation signal is output to the above-described system controller shown in FIG. 5, and it is determined that the opening of the shielding member 3 has been completed.

Therefore, according to the third embodiment, the self-timer LED (not shown) and the AE light receiving member (not shown) are arranged so as to detect the opening start position of the shielding member 3, and the mechanical detection mechanism 21 Is arranged so as to detect the substantially open completion position of the shielding member 3, whereby the self-timer LED and the AE light receiving member (both not shown) detect the opening start position of the shielding member 3, and the detection signal The above-described initial setting operation can be performed by the system controller based on this, and thereafter, the mechanical detection mechanism 21 can detect that the shielding member 3 is almost opened. As a result, a photographing error can be reliably prevented, and the camera can be started in a short time by completing the initial setting operation before starting photographing.

In the third embodiment, the self-timer LED (not shown) may emit light intermittently for a predetermined time after the imaging lens 4 is shielded by the shielding member 3. According to such a configuration, when the operation of opening the shielding member 3 within a predetermined time after the shielding of the imaging lens 4 is performed, the self-timer LED and the AE
Light receiving member (neither is shown) The opening start position of the shielding member 3 is detected by the shielding member detecting section 111 and the system controller 110 shown in FIG. 5 connected to the light receiving member, and the system controller is controlled based on the detection signal. The initial setting operation described above can be performed, and thereafter, the mechanical detection mechanism 21 can detect that the shielding member 3 is almost opened. In addition, since the cumulative light emission time of the self-timer LED can be shortened, the power consumed by the self-timer LED can be reduced.

In the first to third embodiments, the electronic camera has been described as an example. However, the present invention can be similarly applied to a normal silver halide camera.

[0054]

As described above in detail, according to the present invention, a position detecting mechanism of a shielding member which suppresses an increase in space and cost is provided, and it is possible to prevent a photographing error in which a photograph is taken with the image pickup lens closed. A possible camera can be provided.

[Brief description of the drawings]

FIG. 1 is a top view showing a camera (for example, an electronic camera) according to a first embodiment.

FIG. 2 is a front view of the electronic camera shown in FIG. 1;

FIG. 3 is a front view showing a state where a shielding member of the electronic camera of FIG. 1 is opened.

FIG. 4 shows a self-timer LED and an automatic exposure (AE).
Sectional drawing of a light receiving member.

FIG. 5 is a block diagram showing the electronic camera system of the first embodiment.

FIG. 6 is a sectional view showing another embodiment of the shielding member incorporated in the camera of the first embodiment.

FIG. 7 is a block diagram showing a distance measuring system of the electronic camera.

FIG. 8 is a front view showing a camera (for example, an electronic camera) according to the second embodiment.

FIG. 9 is a front view showing a camera (for example, an electronic camera) according to a third embodiment.

FIG. 10 is a cross-sectional view across the mechanical detection means of the electronic camera of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Camera body, 3 ... Shielding member (lens barrier), 4 ... Imaging lens, 7 ... Self-timer LED, 8 ... LED window, 9 ... AE light receiving member, 10 ... AE light receiving window, 12 ... AE light receiving element, 14 ... Slope surface, 15 ... High reflection member, 21 ... Mechanical detection mechanism, 23 ... Cam groove, 24 ... Cam pin, 26 ... Rotating lever, 28 ... Activating lever, 30 ... Leaf switch, 31 ... Contact piece, 101 ... Aperture Shutter, 105: detachable memory, 109: AE unit, 110: system controller, 111: detecting unit for shielding member, 112: shielding determining unit.

Claims (5)

[Claims] 1. A shielding member attached to a front surface of a camera body, which shields a part of the camera body when not in use and moves so as to be opened when used, and A photographing lens which is shielded or opened by an operation, and which is attached to the camera body and is shielded or opened by the shielding member, and emits light to the outside when opened to be used as a part of a camera function A member, a light receiving member attached to the camera body and receiving external light to be used as a part of a camera function; and a light shielding member, which is shielded by the shielding member, emits light from the light emitting member when not in use. The light receiving member receives the light reflected by the inner surface with the light receiving member, and determining means for determining a shielding state by the shielding member based on the received light. Camera according to symptoms. 2. The screen according to claim 1, wherein the shielding member has a reflection surface on its inner surface for reflecting emitted light.
The described camera. 3. The camera according to claim 1, wherein the light emitting member and the light receiving member are arranged so as to be located at a position of the camera body that is opened later by the movement of the shielding member than the photographing lens. The camera according to 1. 4. The light-emitting member and the light-receiving member are arranged side by side in a direction orthogonal to a moving direction of the shielding member at a position of the camera body that is opened later by the movement of the shielding member than the photographing lens. 2. The camera according to claim 1, wherein the camera is operated. 5. The light-emitting member and the light-receiving member, and mechanical detection means for mechanically detecting the movement of the shielding member, wherein: a position at which the shielding member starts to be opened; and a position at which the shielding member is substantially opened. 2. The camera according to claim 1, wherein each of the cameras is arranged so as to detect the position.