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Stereoscopic imaging apparatus

A technology of stereo imaging and imaging device, which is applied in the field of focus adjustment technology and can solve the problems of unsuitability for interview shooting, excessive effort and time, etc.

Inactive Publication Date: 2012-08-15
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, as mentioned above, the problem is that it takes a lot of effort and time to set up and adjust for each shot
Therefore, there is still the problem that this beam splitter type is not suitable for shooting interviews with people or shooting sports broadcasts in the backyard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 5 example

[0035] 7. Fifth Embodiment (Example of a configuration in which the position of the principal point of the imaging optical system is moved, and with this movement, the imaging device is moved in a direction away from the optical axis of the target optical system to perform focus adjustment)

[0036] 8. Modified form of the fifth embodiment (an example of a configuration using a lens whose position of the principal point on the front side hardly moves at the time of focus adjustment as a lens of the imaging optical system)

[0037] 9. Modifications of the first to fifth embodiments

[0038]

[0039] exist figure 1 , a configuration example of a stereoscopic imaging device 1 according to an embodiment of the present invention is shown. refer to figure 1 The stereoscopic imaging device 1 shown in , the basic configuration and focus adjustment operation common to the first to fifth embodiments described later will be described. The stereoscopic imaging device 1 includes an ob...

no. 1 example

[0065] will refer to Figure 3A and 3B A stereoscopic imaging device 1-1 according to a first embodiment of the present invention will be described. Such as Figure 3A and 3B As shown, the objective optical system 10 includes concave lenses and convex lenses. and figure 1 Similar to the configuration shown in , the imaging sections 2R and 2L are arranged in such a manner that the optical axis Ax2R of the imaging optical system 20R and the optical axis Ax2L of the imaging optical system 20L intersect each other on the optical axis Ax1 of the objective optical system.

[0066] The optical axis Ax2R of the imaging optical system 20R and the optical axis Ax2L of the imaging optical system 20L are made to intersect each other at a position (intersection point c) on the optical axis Ax1 of the objective optical system which is a distance δ from the focal point F. The position of the intersection point c is adjusted to be set within the range in which the aerial image S' is form...

no. 3 example

[0081] will refer to Figures 5A to 5C A stereoscopic imaging device 1-3 according to a third embodiment of the present invention is described. Such as Figures 5A to 5C As shown, in the stereoscopic imaging device 1 - 3 , the imaging sections 2R and 2L are provided in such a manner that the optical axis of the imaging optical system 20R ( 20L) is parallel to the optical axis Ax1 of the object optical system 10 . Further, the imaging optical systems 20R and 20L include convergence angle variable lenses 204R and 204L respectively formed of concave lenses.

[0082] The convergence variable lens 204R ( 204L) is configured to be movable in a direction away from the optical axis Ax1 of the objective optical system 10 with respect to the optical axis Ax2 of the imaging optical system 20 . The angle formed by the optical axis Ax2 of the imaging optical system 20 and the optical axis Ax1 of the objective optical system 10 changes according to the amount of movement of the convergenc...

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Abstract

A stereoscopic imaging apparatus includes: an objective optical system having a function of forming a subject as a real or virtual image; imaging optical systems allowing light beams of the subject, emitted in different paths of the objective optical system by independent optical systems, to be imaged again as a parallax image, respectively; imaging devices provided in correspondence with the imaging optical systems, and converting the parallax image into an image signal; and a control unit performing a control for disposing or moving a front-side principal point of each of the imaging optical systems, so that a ratio of a length of a perpendicular line vertically drawn from each front-side principal point to an optical axis of the objective optical system with respect to a length of a line segment connecting an intersection point at which the perpendicular line and the optical axis intersect each other and a focal point of the objective optical system becomes constant.

Description

technical field [0001] The present invention relates to a stereoscopic imaging device that performs photographing of a stereoscopic image, and more particularly, the present invention relates to a focus adjustment technique when photographing a stereoscopic image. Background technique [0002] In recent years, demand for video cameras (stereoscopic imaging devices) capable of capturing 3D (stereoscopic) images has been increasing. As for the imaging method of a stereoscopic image, there are disclosed a beam splitter type (half mirror type) that performs shooting by using a half mirror, a side-by-side type (for side-by-side two eyes) that performs shooting using two imaging devices that are physically juxtaposed to each other. type), etc. In such a shooting type, an imaging device is mounted on a stand called a rig and shooting is performed, so that the degree of freedom in mounting the imaging device increases. For example, the inter-lens distance (baseline length; hereina...

Claims

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Application Information

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IPC IPC(8): G03B35/08G03B13/32H04N5/232H04N13/02H04N13/239H04N13/243
CPCH04N13/243H04N13/204H04N13/239H04N23/959
Inventor 青木直山田正裕
Owner SONY CORP
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