Method for measuring light intensity distribution

Abstract

The invention provides a method for measuring light intensity distribution. The method comprises the steps of: providing a light intensity distribution detection system, and setting the light intensity distribution detection system in a vacuum environment, wherein the light intensity distribution detection system comprises a carbon nanotube array, a reflector, an imaging element and a cooling device, and the carbon nanotube array is arranged on a growing substrate; a cooling device is activated to cool the growing substrate, so that a contact surface of the growing substrate and the carbon nanotube array maintain constant temperature; irradiating the carbon nanotube array with a light source to be measured so that the carbon nanotube array radiates visible light, and continuously cooling the growing substrate so that the contact surface of the growing substrate and the carbon nanotube array maintains a constant temperature; reflecting the visible light radiated by the carbon nanotube array through using the reflector; and utilizing the visible light reflected by the reflector to form an image by means of the imaging element, and reading out light intensity distribution of the lightsource to be measured.

Description

technical field [0001] The invention relates to a method for measuring light intensity distribution, in particular to a method for measuring light intensity distribution based on carbon nanotube arrays. Background technique [0002] The direction (angle) in which the light emitted by the light source propagates and the magnitude of its intensity are collectively referred to as "light intensity distribution". [0003] The measurement method of light intensity distribution is basically divided into two types: one is to place the sensor at a certain distance from the sample, and the sensor moves and measures at several points concentrically distributed around the sample to measure the distribution of light intensity; The other is to place the measuring device at different distances from the sample to measure the distribution of light intensity. The measuring device consists of a CCD sensor and an optical system with a super wide-angle prism similar to a fisheye lens. [0004] ...

AI Technical Summary

Problems solved by technology

Photon sensors have the advantages of high sensitivity and fast response speed. However, photon sensors require liquid nitrogen cooling, high cost, and narrow detectable light wave bands.

Thermal sensors are low cost, detectable in a wide band of light waves, and can operate at room temperature, however, thermal sensors have the disadvantages of low sensitivity and low resolution

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