Method for measuring light intensity distribution

A light intensity distribution and measurement method technology, applied in the field of light intensity distribution measurement, can solve the problems of low sensitivity of thermal sensors, narrow light wave band, and low resolution, and achieve high sensitivity, high absorption rate, high resolution and accuracy degree of effect

CN108731797AActive Publication Date: 2018-11-02TSINGHUA UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-11-02

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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.
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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] ...

Examples

Embodiment Construction

[0031] The method for detecting light intensity distribution provided by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] See figure 1 , the embodiment of the present invention provides a detection system 100 of light intensity distribution, comprising: a carbon nanotube array 10 disposed on the surface of a growth substrate, a cooling device 20 , a mirror 30 and an imaging element 40 . The cooling device 20 is arranged between the imaging element 40 and the growth substrate 14, and the cooling device is used to cool the growth substrate 14 so that the contact surface between the growth substrate 14 and the carbon nanotube array 10 maintains a constant temperature; The mirror 30 is spaced from the carbon nanotube array 10 , and the carbon nanotube array 10 is disposed between the mirror 30 and the growth substrate 14 ; the imaging element 40 is spaced from the cooling device 20 .

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