JP2958155B2 - Appearance camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an appearance camera for photographing a person's own appearance on a mirror, such as a photograph for identification.

[0002]

2. Description of the Related Art Conventionally, when photographing an identification photograph or an anticipated face photograph with eyeglasses mounted thereon, a subject is positioned facing a vertically standing flat half mirror. (Hereinafter, referred to as an appearance camera) may be used in which a camera placed on the side opposite to the subject side of the plane half mirror is used to photograph the image of the subject reflected on the semi-transmissive mirror surface.

Here, the positional relationship between the plane half mirror and the photographing lens of the camera body in the conventional appearance camera as described above is shown on the basis of FIG. Will be explained. According to this, the optical axis 2 of the taking lens 1 passes through the center point E in the vertical and horizontal directions of the plane half mirror 3 and is orthogonal to the semi-transmissive mirror surface 3 b of the plane half mirror 3.
Is the optical axis 2 of the photographing lens 1 with respect to the photographing lens 1.
It is fixed at a position separated by a length L at the above distance.

When taking a picture, the subject is positioned opposite to the plane half mirror 3 and reflects his / her own image on the semi-transmissive mirror surface 3b of the plane half mirror 3, thereby determining the framing of the photograph to be taken. By causing the camera body to perform a release operation, an image of a subject that is transmitted through the plane half mirror 3 and enters the photographing lens 1 is photographed by the camera body. As shown in FIG. 4, for example, when the eye of the subject is at the position indicated by the point P1 on the optical axis 2, the visible range in the vertical direction in which In this case, the range shown by the length W1 is obtained, and this length W1 is equal to twice the length of the plane half mirror 3 in the vertical direction. This does not hold true only when the eyes of the subject are at the position indicated by the point P1, and for example, when the eyes of the subject 1 are at the position indicated by the point P2, the visible light on the position including the point P2 is not sufficient. The range is a range indicated by a length W2, and the length W2 is determined by the point P
1, the plane half mirror 3
Is equal to twice the length in the vertical direction.

The relationship between the visible range of the subject in the vertical direction and the length of the plane half mirror 3 in the vertical direction is not limited to the case where the subject's eyes are on the optical axis 2 and is always established. Although the description is omitted here, the same relationship always holds for the relationship between the visible range of the subject in the left-right direction and the length of the plane half mirror 3 in the left-right direction.

On the other hand, the vertical photographing range of the photographing lens 1 is a range surrounded by lines S1 and S2 in FIG. 4, and coincides with the range indicated by the length W1 in FIG. However, at the position including the point P2, the distance is larger than the range indicated by the length W2 in FIG. That is, the vertical visible range in which the subject can be seen through the plane half mirror 3 and the vertical shooting range of the photographing lens 1 are different when the eyes of the subject are located at positions other than the point indicated by the point P1. Causes an error.

[0007]

As described above, in the conventional figure camera, the visible range in which the subject can be seen through the plane half mirror 3 is twice the length of the plane half mirror 3 in each of the vertical and horizontal directions. For example, in order to be able to take a full-length photograph of the subject, the length of the plane half mirror 3 in the vertical direction must be at least equal to half the height of the subject, and There is a problem that the size of the image becomes large.

In the conventional appearance camera, the visible range in which the subject can be seen through the plane half mirror 3 and the shooting range of the shooting lens 1 match.
Since it is only when the eyes of the subject are at the position indicated by the point P1, if the eyes of the subject are located at positions other than the point P1, the camera body 4 is actually moved according to the position of the eyes of the subject. The magnitude relationship between the shooting range and the visible range in which the subject can be seen through the plane half mirror 3 and the positional relation of the plane half mirror 3 in the vertical and horizontal directions change. For this reason, depending on the position of the subject with respect to the plane half mirror 3, there is a case where a picture of framing different from imaginary framing based on the image of the subject reflected on the plane half mirror 3 and its background may be taken.
For example, there is a problem that a problem occurs when taking a photograph in which framing of a subject with respect to the entire photograph such as a certification photograph is particularly important.

Conversely, in order for the subject to be able to always take a picture with the same framing as the virtual framing while looking at the plane half mirror 3, the subject must be within the entire plane half mirror 3 or within a certain range thereof. It is necessary to fix the distance of the subject from the plane half mirror 3 so that the visible range when the camera is viewed and the range actually photographed by the camera body coincide with each other. However, even if the size is such that the whole body of the subject can be imaged, there is a problem that the degree of freedom regarding framing (upper body photograph, whole body photograph, etc.) that can be selected on the subject side is reduced.

These problems also apply to the relationship between the visible range in the left-right direction in which the subject can be seen through the plane half mirror 3 and the photographing range in the left-right direction of the photographing lens 1.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and allows the whole body of a subject to be projected on a half mirror without increasing the size of the entire camera, and allows framing of a photograph actually taken. It is an object of the present invention to provide an appearance camera capable of easily and accurately recognizing a subject before photographing and improving a degree of freedom of framing that can be selected on the subject side.

[0012]

In order to achieve the above object, the present invention provides a camera body having a photographing lens, the camera body and an object photographed by the camera body on the optical axis of the photographing lens. A spherical half mirror provided between the camera body, the spherical half mirror forming a convex spherical semi-transparent mirror surface on the subject side, and the spherical half mirror has a relative position with respect to the camera body. Is fixed.

Further, according to the present invention, the spherical half mirror may be configured such that a visible range when the fixed range of the spherical half mirror is viewed from the subject side and a photographing range of the photographing lens are different from each other.
It is formed so as to have a curvature that substantially matches regardless of the position .

Further, according to the present invention, a display indicating the predetermined range is provided on the spherical half mirror.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing a schematic configuration of a look-ahead camera according to an embodiment of the present invention and a use state thereof, and FIG.
FIG. 4 is an explanatory diagram showing a positional relationship between a spherical half mirror and a photographing lens in the appearance camera viewed from the side of a housing of the appearance camera.

First, in FIG. 1, reference numeral 10 denotes a subject, and reference numeral 20 denotes an appearance camera. Reference numeral 21 denotes a housing of the appearance camera 20. On the subject side (front side) of the housing 21, a spherical half mirror 22 is held with its convex side exposed. In this embodiment, the convex side of the half mirror 22 is a semi-transmissive mirror surface 22a. On the front side of the housing 21, a light receiving element (not shown) for receiving a release light wave such as infrared light emitted from a remote controller 35 operated on the subject 10 side is provided.
Is provided. On the other hand, on the rear side of the spherical half mirror 22 in the housing 21, a camera body 30 having a photographing lens 31 and a reflection mirror 32 are fixedly installed. The housing 21 is attached to the upper end of a slide arm 24 via a ball joint 23 so as to be tiltable in the longitudinal direction, and the slide arm 24 is attached to a main column 26 of a stand 25 installed on the floor surface. It is attached so that it can come and go in the longitudinal direction.

In the camera body 30 installed in the housing 21, the light receiving element is provided with the remote controller 3.
An auto-focus mechanism (not shown) that operates when receiving the release lightwave from the camera 5 and performs a focusing operation of the photographing lens 31, or a fixed mechanism after the release lightwave is received by the light receiving element. A self-timer mechanism (not shown) for performing a release operation with a delay, a flash device for shadow removal, and the like are provided. The optical axis 33 of the photographing lens 31 is refracted by the reflection mirror 32 at right angles from the vertical direction to the horizontal direction.

FIG. 2 shows the positional relationship between the spherical half mirror 22 and the photographing lens 31 when viewed from the side of the housing 21.
A line M connecting the center point D of the spherical half mirror 22 and the center point of curvature Q of the spherical half mirror 22 intersects the optical axis 33 of the taking lens 31 refracted by the reflection mirror 32 at an angle θ. The spherical half mirror 22 is tilted with respect to the optical axis 33 in the direction indicated by arrow A in FIG. 2 with the lower end of the spherical half mirror 22 as the center of rotation. As shown here, the line M connecting the center point D of the spherical half mirror 22 and the center point Q of curvature is inclined by the angle θ with respect to the optical axis 33 of the taking lens 31 when viewed from the subject side. This is because the face of the subject is located at a position 1/3 from above the effective photographing range F of the spherical half mirror 22.

The semi-transmissive mirror surface 2 of the spherical half mirror 22
As shown in FIGS. 1 and 3, a frame line 22 b indicating a photographing effective range F as a certain range is displayed in 2 a with a thickness that does not hinder photographing, while the front side of the housing 21 is shown in FIG. As shown in FIG. 3, for example, marks 21a, 21a indicating an appropriate position of the subject's eyes in the case of taking an upper body photograph are formed by dividing a line connecting these marks 21a, 21a from above the spherical half mirror 22. 3 is displayed. As shown in FIG. 2, the apparent front main plane K of the photographing lens 31 viewed from the subject 10 is closer to the subject 10 than the center of curvature Q of the spherical half mirror 22. And this spherical half mirror 22
Is a visible range when the object 10 is viewed within a frame line 22b indicating a photographing effective range F of the spherical half mirror 22,
The shooting range of the shooting lens 31 is substantially the same as the shooting range.

This will be described in detail with reference to FIG. 2 taking the vertical direction of the spherical half mirror 22 as an example. The vertical visible range in which the subject 10 can visually see the effective photographing range F of the spherical half mirror 22 is shown. As shown in FIG. 2, for example, when the eye of the subject 10 located on the front side of the spherical half mirror 22 is located at a position indicated by a point R1 on the optical axis 33, a length is included on a position including the point R1. H1
And the position of the eyes of the subject 10 is the point R
When it is located at the position indicated by 2, the range is indicated by the length H2, and both coincide with the vertical shooting range of the shooting lens 31 indicated by the range surrounded by the lines T1 and T2 in FIG. The same applies to the relationship between the visible range in the left-right direction in which the subject 1 can be seen through the spherical half mirror 22 and the shooting range in the left-right direction of the photographing lens 31.

For this reason, in the above-mentioned appearance camera 20 of the present embodiment, the subject 10 is located in front of the spherical half mirror 22 and its own figure is indicated by the frame line 22 b indicating the effective photographing range F of the spherical half mirror 22. And the frame line 22b
After confirming the framing of the photograph to be taken by the image reflected in the
Is operated to transmit the release lightwave to the appearance camera 20 side, the focusing operation by the autofocus mechanism and the delay operation by the self-timer mechanism are performed on the camera body 30 side, and the release operation is further performed. An image of the subject 10 that is transmitted through the spherical half mirror 22 and enters the photographing lens 31 is photographed by the camera body 30.
The framing of the photograph taken in this manner is substantially the same as the framing that is confirmed when the subject 10 first looks at the image of the spherical half mirror 22 that is seen in the frame 22 b indicating the effective photographing range F of the spherical half mirror 22. Becomes

As described above, according to the appearance camera 20 of the present embodiment, the object 10 photographed by the appearance camera 20
Since the half mirror for projecting the image of the subject is the spherical half mirror 22, the whole body of the subject can be projected on the half mirror without increasing the size of the entire camera.

According to the appearance camera 20 of this embodiment,
A frame line 22b indicating the effective photographing range F of the spherical half mirror 22 from the subject 10 side.
The visible range when observing the inside and the shooting range of the shooting lens 31 are formed with a curvature substantially matching, and a frame line 22 b indicating the shooting effective range F of the shooting lens 31 is displayed on the spherical half mirror 22. I did it. Therefore, the subject 1
0 is located with respect to the appearance camera 20, the framing substantially the same as the framing of the photograph taken by the appearance camera 20 is performed by the spherical half mirror 22.
Can be visually recognized in the image reflected in the frame line 22b of the subject 10, and therefore, the framing of the photograph actually taken
Can be easily and accurately recognized before photographing. In addition to this, regardless of the position of the subject 10 with respect to the appearance camera 20, framing of an image reflected within the frame 22 b of the spherical half mirror 22 corresponds to framing of a photograph taken by the appearance camera 20. Since they almost match,
It is not necessary to fix the position of the subject 10 with respect to the spherical half mirror 22, so that the degree of freedom of framing that can be selected on the subject 10 side can be improved.

Further, according to the appearance camera 20 of the present embodiment, the spherical half mirror 22 is moved relative to the camera body 30 in the direction indicated by the arrow A in FIG. 2 with the lower end of the spherical half mirror 22 as the center of rotation. For example, when the subject 10 is located at a relative position overlooking the appearance camera 20 with respect to the appearance camera 20, the orientation of the spherical half mirror 22 is set to the direction directly facing the field of view of the subject 10. , The orientation of the taking lens 31 can be the center of the framing intended by the subject 10,
Each of the image reflected by the spherical half mirror 22 viewed by the subject 10 and the photograph of the subject 10 taken by the camera body 30 can be in a state where the sense of perspective is balanced. Further, the housing 21 of the appearance camera 20 is attached to the upper end of the slide arm 24 so as to be tiltable in the longitudinal direction by the ball joint 23, and the slide arm 24 is attached to the main column 26 of the stand 25 installed on the floor surface. Is mounted so as to be freely retractable in the longitudinal direction, so that the position and orientation of the housing 21 can be adjusted according to the physique of the subject 10.

In this embodiment, the effective photographing range F of the photographing lens 31 is changed to the semi-transmissive mirror surface 22a of the spherical half mirror 22.
Is performed by displaying the frame 22b in the above, but the frame 22b is replaced by the semi-transmissive mirror surface 22a of the spherical half mirror 22.
Alternatively, a light-emitting device such as a light-emitting element may be provided at a position corresponding to the four corners of the effective photographing range F in the housing 21 to emit light. The effective imaging range F may be displayed by transmitting light from the rear side of the spherical half mirror 22 to the semi-transmissive mirror surface 22a. Instead of displaying the marks 21a, 21a on the front side of the housing 21, a line connecting the marks 21a, 21a is drawn on the semi-transmissive mirror surface 22a of the spherical half mirror 22 or on the semi-transmissive mirror surface 2.
It may be displayed on the surface opposite to 2a.

Further, in the present embodiment, the spherical half mirror 22 is
2 is tilted in the direction shown by the arrow A in FIG. 2 with the lower end of the spherical mirror 2 as the center of rotation, but a line M connecting the center point 22a of the spherical half mirror 22 and the curvature center point Q of the spherical half mirror 22 is formed. May be arranged so as to overlap the optical axis 33 of the taking lens 31 refracted by the reflection mirror 32. In this case, the photographing lens 31 (housing 21)
The shooting range when the distance between the camera and the subject is changed can be further matched.

In this embodiment, the positional relationship between the spherical half mirror 22 and the camera body 30 is determined by the
The apparent front principal plane K of the photographic lens 31 as viewed from the side is set to a relative position such that it is closer to the subject 10 than the center of curvature Q of the spherical half mirror 22. Can be brought closer, and the depth of the housing 21 and the area of the spherical half mirror 22 can be reduced.
1 may be a relative position such that the front main plane K is located on the center point of curvature Q of the spherical half mirror 22. In this case, if the eye of the subject 10 is on the optical axis 33, the position may be determined. Regardless, the visible range when the inside of the frame line 22b indicating the effective imaging range F of the spherical half mirror 22 is visually observed from the subject 10 side can be completely matched with the imaging range of the imaging lens 31.

In this embodiment, the photographing lens 31 is used.
1 is refracted by a reflection mirror 32 at right angles from the vertical direction to the horizontal direction, and the camera body 30 is arranged in an upward direction in FIG. 1. However, the reflection mirror 32 is omitted and FIG. The camera body 3 extends on an extension of the optical axis 33 extending in the middle horizontal direction on the back side of the spherical half mirror 22.
0 may be arranged.

[0029]

As described above, according to the appearance camera of the present invention, the half mirror for confirming the framing of the photograph in which the object is photographed is a spherical half mirror.
The whole body of the subject can be projected on the spherical half mirror without increasing the size of the entire camera.

Further, according to the appearance camera of the present embodiment, the spherical half mirror has a visible range when a certain range of the spherical half mirror is viewed from the subject side, and a photographing range of a photographing lens of the camera body. Are formed with approximately the same curvature, and a display indicating the fixed range is provided on the spherical half mirror, so that framing substantially the same as framing of a photograph taken regardless of the position of the subject is performed by the spherical half mirror. It can be seen in an image reflected within a certain range,
Therefore, the subject can easily and accurately recognize the framing of the actually photographed photograph before photographing. In addition, regardless of the position of the subject, the framing of an image reflected within a certain range of the spherical half mirror substantially coincides with the framing of a photograph to be taken, so that the position of the subject with respect to the spherical half mirror is fixed. Therefore, the degree of freedom of framing that can be selected on the subject side can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of a figure camera according to an embodiment of the present invention and a use state thereof.

FIG. 2 is an explanatory diagram showing a positional relationship between a spherical half mirror and a photographing lens in the appearance camera of FIG. 1 when viewed from a side of a housing of the appearance camera.

FIG. 3 is an enlarged front view of a housing part in the appearance camera of FIG. 1;

FIG. 4 is an explanatory diagram showing a positional relationship between a plane half mirror and a photographing lens of a camera body in a conventional appearance camera, as viewed from a side surface direction orthogonal to a direction in which these are arranged.

[Explanation of symbols]

 Reference Signs List 10 subject 20 appearance camera 22 spherical half mirror 22a semi-transmissive mirror surface 22b frame (display) 30 camera body 31 shooting lens 33 optical axis F shooting effective range (fixed range) H1, H2 visible range T1, T2 shooting range

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Maruyama 2-36-9 Maeno-cho, Itabashi-ku, Tokyo Asahi Optical Industry Co., Ltd. (56) References JP-A-1-128053 (JP, A) 63-174334 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G03B 17/53 G03B 15/00

Claims (3)

(57) [Claims] 1. A camera body having a photographing lens, and a spherical half mirror disposed on the optical axis of the photographing lens between the camera body and a subject photographed by the camera body. The figure-viewing camera, wherein the spherical half mirror has a convex spherical semi-transparent mirror surface formed on the subject side, and the spherical half mirror has a fixed position relative to the camera body. 2. The spherical half mirror is formed with a curvature such that a visible range when a certain range of the spherical half mirror is viewed from the subject side and a photographing range of the photographing lens substantially match regardless of the position of the subject. The appearance camera according to claim 1, wherein: 3. The appearance camera according to claim 2, wherein a display indicating the predetermined range is provided on the spherical half mirror.