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Measurement turntable for bidirectional reflection distribution function of sample

A two-way reflection distribution and turntable technology, which is applied in the measurement of scattering characteristics, etc., can solve the problems of high cost and large volume of BRDF measurement turntable, and achieve the effect of low price, moderate size and simple mechanical structure

Inactive Publication Date: 2013-07-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention is to solve the problem of large volume and high cost of the existing BRDF measuring turntable, and provides a sample bidirectional reflectance distribution function measuring turntable

Method used

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  • Measurement turntable for bidirectional reflection distribution function of sample
  • Measurement turntable for bidirectional reflection distribution function of sample
  • Measurement turntable for bidirectional reflection distribution function of sample

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Experimental program
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specific Embodiment approach 1

[0044] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the sample bidirectional reflectance distribution function measurement turntable described in this embodiment, it includes laser 1, it also includes detector 2, field lens 3, first plane reflector 4, second plane reflector 5, light source Bracket 6, horizontal turntable 7, detector mounting frame 8, field mirror mounting frame 9, connecting rod 10, sample 11, sample seat 12, base 13, first rotating shaft 14, two end plates 15 and second rotating shaft 16 ,

[0045] The detector mounting frame 8 and the field lens mounting frame 9 are arranged on the upper end of the connecting rod 10 from top to bottom, and the connecting rod 10 is vertically connected with the first rotating shaft 14 through a coupling, and the first rotating shaft 14 is arranged between the two end plates 15 Between, the bottom ends of the two end plates 15 are fixed on the horizontal turntable 7; the detec...

specific Embodiment approach 2

[0048] Specific implementation mode two: the following combination figure 2 Describe this embodiment, this embodiment is a further description of Embodiment 1, this embodiment also includes a first three-phase stepper motor 17,

[0049] The output shaft of the first three-phase stepping motor 17 is connected with the first rotating shaft 14 through a thin plate coupling, and the first three-phase stepping motor 17 is used to drive the first rotating shaft 14 to rotate, so that the detector 2 is in the direction of the zenith angle. on sports.

[0050] In order to realize the movement of the detector 2 in the direction of the zenith angle, the detector 2 is fixed in the detector mounting frame 8, and the detector mounting frame 8 and the field lens mounting frame 9 are placed together on the connecting rod 10, and the connecting rod 10 passes through The detector shaft coupling is connected with the first rotating shaft 14, and the first three-phase stepper motor 17 is also c...

specific Embodiment approach 3

[0052] Specific implementation mode three: the following combination image 3Describe this embodiment, this embodiment is the further explanation to embodiment one or two, this embodiment also includes driven gear 18, driving gear 19 and two-phase stepper motor 20, and the diameter of driven gear 18 is larger than driving gear 19 diameter of;

[0053] The driven gear 18 is socketed on the outer circular surface of the horizontal turntable 7, the driven gear 18 cooperates with the driving gear 19, and the driving gear 19 is socketed on the output shaft of the two-phase stepping motor 20, and the two-phase stepping motor 20 is used To drive the driving gear 19 to rotate, thereby driving the horizontal turntable 7 to rotate in the horizontal direction, so as to realize the change of the azimuth angle of the detector 2 .

[0054] The entire device for the zenith angle movement of the detector 2 is placed on the horizontal turntable 7. Due to the large moment of inertia, the drive...

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Abstract

The invention provides a measurement turntable for a bidirectional reflection distribution function (BRDF) of a sample, which belongs to the technical field of measuring of BRDFs. With measurement turntable provided by the invention, the problems of a great volume and high cost of a conventional BRDF measurement turntable are overcome. The measurement turntable comprises a laser, a detector, a field lens, a first plane mirror, a second plane mirror, a light source support, a horizontal rotary table, a detector mounting rack, a field lens mounting rack, a connecting rod, a sample, a sample holder, a pedestal, a first rotating shaft, two end plates and a second rotating shaft, wherein parallel light beams transmitted by the laser are incident to the second plane mirror after reflection by the first plane mirror, reflected light beams of the second plane mirror are incident to the upper surface of the sample, reflected light beams of the sample are incident to a light receiving surface of the detector after convergence by the field lens, and the detector is located at the focus of the field lens. The measurement turntable provided by the invention is applicable to measurement of the BRDF of the sample.

Description

technical field [0001] The invention relates to a turntable for measuring a bidirectional reflection distribution function of a sample, and belongs to the technical field of bidirectional reflection distribution function measurement. Background technique [0002] The existing bidirectional reflectance distribution function BRDF measurement turntable has the following two types: [0003] The first is: [0004] The sample on the BRDF measurement turntable is stationary, the light source and the detector move, and can cover the measurement of the hemispherical space of the sample. It has the following disadvantages: [0005] (1) The light source needs to be directly installed on the moving device. It is difficult to replace the light source with different wavelengths, and a motor with a large output torque is required to drive it; [0006] (2) The volume of the device is generally large, and the machining accuracy of the mechanical structure is high, the cost is greatly incre...

Claims

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Application Information

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IPC IPC(8): G01N21/47
Inventor 齐超王子誉杨旭强戴景民
Owner HARBIN INST OF TECH
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