On-line measuring device and method for gamma radiation optical glass transmittance

Abstract

The invention provides an on-line measuring device and method for gamma radiation optical glass transmittance. The on-line measuring device for gamma radiation optical glass transmittance comprises ashell, a light source emitter, an optical isolator, a mode matching lens, a first high reflection mirror, a first adjustable diaphragm, a Dove prism, a second adjustable diaphragm, a second high reflection mirror, a focusing lens, a photodetector, a driving control module and an acquisition and processing module, wherein the light source emitter is disposed in the shell and is used for emitting adetection light source; the optical isolator, the mode matching lens and the first high reflection mirror are arranged in the shell; the first adjustable diaphragm is arranged on the shell; the Dove prism is made of optical glass to be measured and is arranged in the irradiation area; the second adjustable diaphragm is arranged on the shell; the second high reflection mirror and the focusing lensare arranged in the shell; the photodetector is disposed in the shell and is used for receiving transmitted light passing through the focusing lens; the driving control module is separately connectedwith the light source emitter and the photodetector and is used for providing driving current for the light source emitter and the photodetector and controlling the output wavelength of the light source emitter; and the acquisition and processing module is connected with the photodetector and is used for acquiring and processing transmitted light signals received by the photodetector.

Description

technical field [0001] The invention relates to the technical field of optical measurement, in particular to an on-line measuring device for gamma radiation optical glass transmittance and an on-line measurement method for gamma radiation optical glass transmittance. Background technique [0002] Optical glass is the basic material of the main optical components in the space optical system, and its transmittance is necessarily related to the system performance. The space radiation environment can affect the absorption properties of optical glass, thereby changing its transmittance. Different materials of optical glass are affected by space radiation in different degrees. For this reason, it is necessary to conduct gamma-ray irradiation experiments (simulating the space irradiation environment) on optical glass during the development of space optical systems to evaluate and screen optical glass for space optical systems. [0003] At present, the process of γ-ray irradiation...

AI Technical Summary

Problems solved by technology

In this case of limited absorption, in order to accurately grasp the extent to which optical glass is affected by irradiation, it is necessary to increase the irradiation intensity and increase the irradiation time.

This large-dose and long-term gamma-ray irradiation experiment requires high experimental and labor costs; and off-line measurement is difficult to meet the needs of scientific researchers for real-time and accurate grasp of the changes in optical glass irradiated by gamma-rays

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