Transmission optical system

Abstract

A transmission optical system includes a plurality of image forming optical systems arranged apart from one another. Each of the image forming optical systems causes bending of light rays when the light passes through symmetric planes constituting one flat plane and reverses the appearing order of the light rays with respect to the symmetric planes when forming an image. An image of a projected object arranged on one of the symmetric planes can be formed as a real image on the other of the symmetric planes. The image forming optical system nearest from the projected object forms an image of the projected object by passing through the symmetric planes for projection while the other image forming optical systems form on the other of the symmetric planes for projection, an image of the imageformed and projected by the image forming optical system adjacent to the projected object side. Thus, the image of the projected object successively passes through the image forming optical systems for image formation, so that a 3-dimensional object and a 2-dimensional image are transferred to positions spatially apart from each other so as to form a 3-dimensional image and a 2-dimensional image,respectively, which can be observed.

Description

technical field [0001] The present invention relates to a transmission optical system that can transmit a projected object to other places for imaging through an imaging optical system, and can cause a three-dimensional object or a three-dimensional image to be inverted in the depth direction, or can be imaged as a real image without inversion. Background technique [0002] As an optical system that utilizes a conventional imaging optical system (such as a convex lens) to project an image of an object, and then transmits the image to other distant places for imaging, for example, a relay lens system can be cited as a representative example (for example, refer to the non-patent literature 1). In a relay lens system, generally, a plurality of lenses are arranged in addition to an objective lens facing an object to be projected (object to be projected), and the image of the object to be projected is imaged multiple times, so that it can be separated from the object to be projec...

AI Technical Summary

Problems solved by technology

However, since the relay lens system arranges all the lenses so that the optical axes are in a straight line and can transmit the image, there is a problem that the image formed by the objective lens is transmitted to a relatively free position by total reflection in a plurality of optical fibers. Compared with fiber optic endoscopes, etc., the observation position of the image is physically restricted

In addition, in such a relay lens system, even if the object to be projected is a three-dimensional object, there is a problem of aberration, and practically only two-dimensional images can be observed.

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