JPH04207391A - Stereoscopic video camera - Google Patents

Abstract

PURPOSE:To reduce a cost, to miniaturize a camera and to save electric power by providing a means photograph left and right videos with one image pick-up element. CONSTITUTION:One image pick-up element 9 is used for an image pick-up element for a right eye and an element for a left eye. That is, shutters 4, 3 are provided on the halfway of optical axes of a lens 2 for the right eye and a lens 1 for the left eye. The shutters 4, 3 are opened/closed in order that the left and right videos alternately pass through them. Both videos are focused on the image pick-up element 9. Each video shutters 3, 4 are opened only at a necessary time, thus even only one image pick-up element 9 can photograph the videos for the right eye and for the left eye, and those videos are not superposed. Consequently, the reduction in weight, the reduction in cost and power saving are attained.

Description

[Detailed description of the invention] [Industrial application field] Regarding video cameras and movie cameras.

[Conventional technology]

Conventional stereoscopic video cameras have image sensors for the right eye and for the left eye, respectively, as shown in the January 1988 issue of TV Technology, pages 26-31.

FIG. 2 shows a block diagram of a conventional stereoscopic video camera. 1
0. an image sensor; 11. Two image sensors are required.

[Problem to be solved by the invention]

By the way, since the conventional stereoscopic video camera described above uses two imaging elements, one for the right eye and one for the left eye, it becomes expensive and large in size.

There have been problems such as differences in characteristics between the two image sensors and increased power consumption.

The present invention aims to improve the above problem by using only one image sensor.

[Means to solve the problem]

In order to achieve the above purpose, a shutter is installed in the middle of the optical axis of the right eye lens and the left eye lens, and the shutter is opened and closed so that the left and right images pass alternately, and both images are captured in one image. element".

This is achieved by imaging the iL.

[Effect]

The image shutter for the right eye opens only when it is needed. The image shutter for the left eye is the same.

Open only when the image for the left eye is needed. Therefore, even with a single image sensor, images for the right eye and for the left eye can be captured without overlapping.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. To obtain a 3D image, images corresponding to the right and left eyes are required. The image for the left eye passes through 12, lens, 3, shutter L, 5, mirror L1.7 mirror L2, and 9. The image is formed on the image sensor.

The image for the right eye is 2, lens R14, shutter R6,
9 through mirrors R1 and 8 and mirror R2. An image is formed on the image sensor.

Here, when 3, shutter L and 4, shutter 1< are opened, images for the right eye and for the left eye are overlapped and imaged on 9, the image sensor.

In the 1-unit moe division method that alternately shoots images for the right [] and left [], the no yield unit is ¥1ll-1 and force 1.
Since it is necessary to switch to the daily image, by opening and closing shutters 3, 3, and 4, shutters R and 3 for each no-yield, the desired image can be taken.

〔Effect of the invention〕

According to the present invention, three-dimensional images can be captured with one image sensor f, so it is possible to reduce the weight, reduce costs, and save energy.
become capable.

[Brief explanation of the drawing]

FIG. 2 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a known example of the conventional system. l Lens ■5, 2... Lens 1, 3 Shutter L, 4 Shutter R. 5...Mirror L1, 6 Mirror □kui, 7...Mirror I, 2, 8 Mirror J history 2゜9 ・Image sensor・.

Claims (1)

[Scope of Claims] 1. Time-division 3D that obtains 3D images by alternately shooting images corresponding to the right eye and left eye, and viewing only the images corresponding to the left and right eyes during playback, respectively. A three-dimensional video camera, which is a video camera, characterized by having means for photographing left and right images using a single image sensor. 2. The stereoscopic video camera according to claim 1, characterized in that one or both of a reflecting mirror and a prism is used as a means for superimposing right-eye and left-eye images on one image sensor. 3. The stereoscopic video camera according to claim 1, wherein a liquid crystal is used as a shutter as a means for selecting only the necessary image for either the right eye or the left eye.