JPH0314656Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a projector that enlarges and projects an image of a subject on a stage onto a screen provided on the front of the main body. Concerning improvements to aircraft imaging equipment.

In general, when using this type of projector to take a still photo of the image projected on the screen, there are two methods: one is to place photosensitive paper (film, etc.) in close contact with the screen surface, and the other is to take the image by removing the screen. A method of attaching an imaging device is used.

However, the former method requires a long film when the film is placed in close contact with the camera, and the latter method requires the camera to check the focus before setting the film. It is necessary to use a special camera that is loaded with a ground glass and, after confirming focus, the ground glass is removed and the film is set. If you change the subject on the stage of the projector, there is no way to check the focus, and therefore it is not possible to shoot multiple subjects, or the focus remains unconfirmed. There was a problem that I had no choice but to film it.

This idea was made in view of the above-mentioned conventional problems, and allows you to check the focus without having to remove the film from the photographic device each time you change the subject. It is an object of the present invention to provide a photographing device for a projector.

This invention provides an image capturing device for a projector for capturing an image corresponding to a screen projected image in a projector that enlarges and projects an image of a subject on a stage on a screen provided in the front of the main body. At the position where the screen is removed, a fixed frame made of a non-light transmitting member, which is detachably attached to the main body and has the same size as the screen, is attached to an opening formed in this fixed frame, and a film is attached to the main body. A camera whose surface faces the inside of the main body and a second opening formed in the fixed frame are provided with a camera from the outside at a position optically flush with the film surface of the camera with respect to the optical system of the projector. By providing a visibly provided projection surface for focus confirmation, the above object can be achieved by making it possible to confirm focus without changing the film every time an image is taken.

In addition, this invention provides that the projection surface for focus confirmation is
The above object is achieved by disposing the lens close to the film surface of the camera, thereby making it possible to check the focus more accurately.

In addition, this invention provides that the projection surface for focus confirmation is
The above object is achieved by arranging a plurality of lenses around the film surface of the camera so that focus can be confirmed more reliably.

In addition, this invention provides that the projection surface for focus confirmation is
The above object is achieved by providing the lens continuously surrounding the film surface of the camera so that the focus can be confirmed more clearly.

Embodiments of the present invention will be described below with reference to the drawings.

This embodiment is a projection device for capturing an image corresponding to the projected image on the screen 2 of a projector P that enlarges and projects an image of a subject 4 on a stage 3 onto a screen 2 provided on the front surface of a main body 1. In the aircraft camera camera, at the position where the screen 2 is removed, there is a fixing frame 5 made of a non-light transmitting member that is removably attached to the main body 1 and has the same size as the screen 2; A camera 8 is attached to an opening 6 formed in the frame 5 and positioned so that the film surface 7 faces inside the main body 1, and a second opening 9 formed in the fixed frame 5 is provided with an optical camera of the projector P. The system is provided with a focus confirmation projection surface 10 that is optically flush with the film surface 7 of the camera 8 and is visible from the outside.

The focus confirmation projection surface 10 is constructed by attaching a focus glass 10A to a second opening 9 formed in the fixed frame 5.

Further, this focus confirmation projection surface 10 is arranged close to the film surface 7 of the camera 8, so that the focus can be confirmed as accurately as possible.

Reference numeral 11 in FIG. 1 is a focusing glass that is attached to the camera 8 before loading film and is removed after confirming the focus, 12 is a film pack that is attached to the camera 8, and 13 is a focusing glass that is attached to the main body 1. Each device is shown. In this embodiment, since the focus of the projected image to be formed on the film surface 7 of the camera 8 can always be confirmed from the focus confirmation projection surface 10,
Even if the upper subject 4 is replaced and the stage 3 is moved by the focusing device 13, the focus can be checked each time, so a good projection image can be easily and reliably captured. It is also possible to take pictures continuously.

In the above embodiment, the focus confirmation projection surface 10 is provided at one location close to the bottom of the camera 8, but there may be a plurality of projection surfaces 10, and in some cases, the projection surface 10 for confirming the focus may be provided at a location close to the bottom of the camera 8. The entire periphery of the film surface 7 may be used as a projection surface for focus confirmation.

In these cases, the focus can be confirmed over a wider range and with less error from the film surface 7.

Further, in the above embodiment, the camera 8 is for taking still photographs, but the present invention is not limited thereto, and may be other photographing devices such as a television camera.

Further, in the above embodiment, the focus on the film surface 7 is confirmed using the focusing glass 11 before loading the film pack 12.
The present invention is not limited to this, and the focus may be confirmed only on the focus confirmation projection plane 10 without using the focus glass 11.

Since the present invention is configured as described above, even if the camera is installed in a position where the screen of the projector is removed, the focus of the projected image can always be checked from the outside, and therefore This has an excellent effect in that even if the object on the stage is changed during imaging, a good projection image can always be easily and reliably captured by checking the focus.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing a projector to which an embodiment of the imaging device for a projector according to the present invention is applied, and FIG. 2 is a perspective view showing the projector in a state where the embodiment is installed. P... Projector, 1... Main body, 2... Screen, 3... Stage, 4... Subject, 5... Fixed frame, 6... Aperture, 7... Film surface, 8... Camera, 9...Second aperture, 10...Projection surface for focus confirmation, 10A...Focusing glass.

Claims (1)

[Claims for Utility Model Registration] (1) Projection for capturing an image corresponding to the screen projected image in a projector that enlarges and projects an image of a subject on a stage onto a screen provided on the front of the main body. In the aircraft imaging device, at a position where the screen is removed, a fixed frame made of a non-light transmitting member that is detachably attached to the main body and has the same size as the screen, and a fixed frame formed on the fixed frame. a second opening formed in the fixed frame, the film surface of the camera is optically connected to the optical system of the projector; An imaging device for a projector, characterized in that a projection surface for focus confirmation is provided at the same surface position and is provided so as to be visible from the outside. (2) The imaging device for a projector according to claim 1, wherein the focus confirmation projection surface is disposed close to the film surface of the camera. (3) The imaging device for a projector according to claim 1, wherein a plurality of the focus confirmation projection surfaces are arranged around the film surface of the camera. (4) The projector according to claim 1 or 2, wherein the projection surface for focus confirmation is continuously provided surrounding the film surface of the camera. Filming equipment.