Device for measuring surface diffuse reflectivity of material
A measuring device and diffuse reflection technology, which is applied in the direction of scattering characteristic measurement, can solve the problems of long measurement time and low efficiency, and achieve the effect of compact structure, convenient use and high reliability
Inactive Publication Date: 2015-03-25
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a material surface diffuse reflection characteristic measurement device based on an annular photodetector array, which overcomes the shortcomings of conventional single detector scanning measurement, such as long measurement time and low efficiency, and has a structural Compact, high reliability, easy to use, low requirements on the stability of the light source, etc.
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[0021] Such as figure 1 As shown, the material surface diffuse reflectance measurement device includes a collimated light source 3, a rotary table 2, a linear array composed of several photodetectors 7, and a signal recording device 5, and the photodetectors are arranged on the frame of the ring fixing frame 4 , the photosensitive element of the detector is facing the center of circle of the ring holder 4, the distance between the starting measurement line formed by the start detector and the center of the ring holder and the end measurement line formed by the end detector and the center of the ring holder. The included angle is 270°; the collimated light source 3 is set on the frame body of the ring fixed frame, the direction of the outgoing light is directly facing the center of the ring fixed frame, and the angle between the direction of the outgoing light and the initial measurement line is 90° The rotary table 2 is arranged in the middle part of the ring fixed frame 4, an...
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The invention discloses a device for measuring the surface diffuse reflectivity of a material based on an annular photoelectric detector array. The device comprises a collimation light source, a rotating stage, a plurality of photoelectric detectors and signal recording equipment, wherein the plurality of photoelectric detectors are arranged on the body of a circular ring-shaped fixing bracket; the included angle between an initial measurement line and a termination measurement line is 270 degrees; the collimation light source is arranged on the body of the circular ring-shaped fixing bracket; the emergent light exactly faces the center of the circular ring-shaped fixing bracket; the included angle between the emergent light and the initial measurement line is 90 degrees; and the rotating stage is arranged in the middle of the circular ring-shaped fixing bracket and can drive a material to be measured to rotate around the rotating stage by a certain angle. The device has the characteristics of compact structure, high reliability, convenience in use and the like, and does not demand too much on the stability of the light source.
Description
technical field [0001] The invention relates to a device for measuring the diffuse reflection characteristic of the material surface, in particular to a device for measuring the diffuse reflection characteristic of the material surface by using a fiber laser and an annular photodetector array. Background technique [0002] In the measurement of laser parameters, the diffuse reflection characteristics of the material surface are an important basis for designing attenuation sampling structures such as diffuse reflection screens and integrating spheres. In the study of laser irradiation effect, the measurement of the diffuse reflection characteristics of the material surface is an important means to obtain the laser coupling coefficient of the material, and it is also the basic method to carry out the experimental study of the laser irradiation effect, which is of great significance for the analysis of the interaction mechanism between laser and matter. [0003] At present, the...
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IPC IPC(8): G01N21/47
Inventor 冯刚杨鹏翎王振宝陈绍武邵碧波冯国斌王平宇文璀蕾
Owner NORTHWEST INST OF NUCLEAR TECH