Optical element and radiation detector using the same

Abstract

A radiation detector comprising three optical members having their light incident end faces (12a, 14a, 16a) arranged in almost the same plane, a scintillator mounted on the light incident end faces (12a, 14a, 16a) of the optical members, a plurality of CCDs for picking up optical images output from light outgoing end faces (12b, 14b, 16b) of the optical members and a plurality of light guiding optical members for guiding the optical images output from the light outgoing end faces (12b, 14b, 16b) of the optical members to the CCDs, wherein the optical members are securely bonded together with a clearance of 10-15 um by an adhesive that has a light adsorbin characteristic, and a protective film is provided over the scintillator.

Description

technical field [0001] The present invention relates to an optical element and a radiation detector using the same, and more particularly to a radiation detector having a large-area light receiving portion and an optical element used therefor. Background technique [0002] In fields such as medical treatment and industry, there is an increasing need for radiation detectors that detect and capture radiographic images quickly and with high precision. For example, a radiation detector equipped with a scintillator for converting a radiographic image into an optical image, an imaging element for imaging such an optical image, and a light guiding optical member for guiding the optical image output from the scintillator to the imaging element is known. of. [0003] In addition, as the above-mentioned optical member for light guide, several million pieces / cm are often arranged in parallel to each other. 2 Optical components formed integrally with optical fibers. Because this kind...

AI Technical Summary

Problems solved by technology

That is to say, in the above-mentioned radiation detector, it is necessary to arrange a plurality of radiation detection units including the above-mentioned optical members of a special shape (triangular prism shape) so that the light-receiving surfaces thereof are arranged on the same plane, so it is not necessary to increase the area of ​​the light-receiving surface. Easy

In addition, due to restrictions on the arrangement of the imaging element, etc., there are restrictions on increasing the area of ​​the light-receiving surface, and it is impossible to achieve a sufficient area to meet the needs of medical and industrial applications.

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