JP4038854B2 - Imaging device accessories and imaging device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an accessory of an imaging apparatus such as a camera or a video camera, and an imaging apparatus.
[0002]
[Prior art]
An imaging apparatus such as a camera or a video camera forms an image of an imaging target such as a person or a landscape on an imaging unit such as a film. Various kinds of accessories of this kind of imaging apparatus have been proposed and implemented, and an imaging effect according to the taste is improved.
[0003]
[Problems to be solved by the invention]
It is an object of the present invention to provide an imaging device accessory and an imaging device that can provide a more interesting imaging effect.
[0004]
[Means for Solving the Problems]
The present invention is an accessory arranged in an optical path of an imaging device, including a mirror that can freely enter and exit an incident optical path of an imaging target, and half of the imaging target as an inverted image in an imaging unit of the imaging device. is focused, also by reflecting the half of the incident light from the object to be imaged by the mirror is incident as an erected image on the imaging unit of the imaging device, and the other half of the incident light from the imaged object this By blocking with a mirror, a symmetrical image composed of the inverted image and the upright image is formed on the imaging unit.
[0005]
The present invention also includes an accessory provided in the optical path of the imaging device, the accessory including a mirror that can freely enter and exit the incident optical path of the imaging target, and an imaging unit of the imaging device with half of the imaging target as an inverted image is focused on, also by reflecting the half of the incident light from the object to be imaged by the mirror is incident as an erected image on the imaging unit of the imaging device, and the other half of the incident light from the object to be imaged By blocking with this mirror, a symmetric image composed of the inverted image and the upright image is formed on the imaging unit.
[0006]
[Action]
According to each invention of the above configuration, a symmetrical image of the imaging object can be formed, so that an interesting imaging effect can be obtained.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view of the camera and the accessory in a separated state, FIG. 2 is a cross-sectional view of the accessory, FIG. 3 is a simplified cross-sectional view of the camera and the accessory being imaged, and FIGS. 4 (a), 4 (b) and 5 (a). , (B) is a front view of the photograph.
[0008]
In FIG. 1, reference numeral 1 denotes a camera. This camera 1 is a well-known camera, and has a main body 2, a lens unit 3, a finder unit 4, a shutter button 5, and the like.
[0009]
Reference numeral 10 denotes an accessory, which includes a mirror 12 disposed inside a cylindrical case 11. In FIG. 2, the rear end portion of the mirror 12 is rotatably mounted on the hinge 13. An eccentric cam 14 is disposed on the back surface of the mirror 12, and the mirror 12 is in elastic contact with the peripheral surface of the eccentric cam 14 by a spring 15. When the knob 16 shown in FIG. 1 is rotated, the eccentric cam 14 rotates, and the mirror 12 can be rotated in the direction of arrow a around the hinge portion 13 to adjust the angle. As will be described later, the mirror 12 is rotated to enter and exit the incident optical path of the object to be imaged, and a symmetric image is captured. Reference numeral 8 denotes a locking hole formed in the front end surface of the lens unit 3, and the accessory 10 is detachably attached to the locking hole 8.
[0010]
FIG. 3 shows the imaging principle of a symmetric image using this accessory 10. Reference numeral 6 denotes a film as an image forming unit located on the inner back surface of the main body 2, 7 denotes a lens of the lens unit 3, and A denotes an imaging target.
[0011]
In FIG. 3, the light L1 emitted from the vertex A of the imaging object A passes through the optical center of the lens 7, enters the film 6 as light L1 ′, and forms an image as the vertex A ′. The light L0 emitted from the middle point B of the imaging object A passes through the optical center of the lens 7, enters the film 6 as light L0 ', and forms an image as the middle point B'. Therefore, the upper half (A to B) of the imaging object A is imaged on the lower half of the film 6 as an inverted image.
[0012]
The light L2 emitted from the vertex A and incident on the mirror 12 enters the film 6 as reflected light L2 ′ and forms an image as the vertex A ″. The light L0 emitted from the middle point B of the imaging object A is a lens. 7 enters the film 6 as light L0 'and forms an image as a middle point B'. Therefore, the upper half (A to B) of the imaging object A is placed on the upper half of the film 6 as an upright image. On the other hand, light emitted from the lower half (b), which is the other half of the imaging object A , is blocked by the mirror 12 and does not enter the film 6. In FIG. It shows that the light L3 emitted from the lower point C is blocked by the mirror 12.
[0013]
As described above, the upper half (A to B) of the imaging object A is formed on the film 6 as a vertically symmetric image composed of the inverted image and the upright image, but the lower half is blocked by the mirror 12 and is film. 6 is not imaged.
[0014]
FIG. 4A shows a photograph of a mountain photographed by the camera 1 without using the accessory 10. FIG. 4B shows a photograph of the same mountain taken with the camera 1 using the accessory 10. In FIG. 4A, the whole view of the mountain is taken against the sky. On the other hand, in FIG. 4B, the upper half is taken as a vertically symmetrical image. Here, the viewer mistakes the sky in the lower half upside down with the water surface. Therefore, this photograph has an imaging effect as if a mountain on the surface of the water was photographed.
[0015]
FIG. 5 shows another imaging example. FIG. 5A is a photograph of one house taken by the camera 1 without using the accessory 10. Further, FIG. 5B is a photograph of the same house as shown in FIG. 4B in which the accessory 10 is rotated by 90 ° about the axis and the mirror 12 is turned sideways. In this case, a bilaterally symmetric image is captured based on the same principle as in FIG.
[0016]
FIG. 6 is a front sectional view of an accessory according to another embodiment of the present invention. In this accessory 10 ′, in addition to the mirror 12, two right and left mirrors 12 a and 12 b are rotatably arranged like the mirror 12. Therefore, if one of the mirrors 12a or 12b is advanced into the optical path and the other two mirrors 12 and 12a or 12b are moved away from the optical path, the photograph shown in FIG. 5B can be taken.
[0017]
In the above embodiment, the accessories 10 and 10 ′ are separated from the camera 1, but may be integrated with the camera 1. The accessory can also be applied to other imaging devices such as a video camera.
[0018]
【The invention's effect】
According to the present invention, it is possible to form a symmetric image of an object to be imaged, so that an interesting imaging effect can be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view of a camera and an accessory in a separated state. FIG. 2 is a sectional view of the accessory. FIG. 3 is a simplified sectional view of a camera and an accessory during imaging. [Fig. 5] (a) Front view of the photo (b) Front view of the photo [Fig. 6] Front sectional view of the accessory [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Camera 2 Main body 3 Lens part 6 Film 7 Lens 10, 10 'Accessory 11 Case 12, 12a, 12b Mirror 16 Knob

Claims (2)

It is an accessory arranged in the optical path of the imaging device, includes a mirror that can freely enter and exit the incident optical path of the imaging target, and forms half of the imaging target as an inverted image on the imaging unit of the imaging device, also by reflecting the half of the incident light from the object to be imaged by the mirror is incident as an erected image on the imaging unit of the imaging device, and the other half of the incident light from the object to be imaged is blocked by the mirror Thus, an accessory of the imaging apparatus, wherein a symmetrical image composed of the inverted image and the upright image is formed on the imaging unit. An accessory is provided in the optical path of the imaging device, and the accessory includes a mirror that can freely enter and exit the incident optical path of the imaging target, and half of the imaging target is imaged as an inverted image on the imaging unit of the imaging device. also by reflecting the half of the incident light from the object to be imaged by the mirror is incident as an erected image on the imaging unit of the imaging device, and the other half of the incident light from the object to be imaged is blocked by the mirror Thus, the imaging device forms an image of the symmetric image composed of the inverted image and the upright image on the imaging unit.

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