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 mea

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0044] Specific implementation mode 1: the following combination figure 1 To explain this embodiment, the sample bidirectional reflection distribution function measurement turntable of this embodiment includes a laser 1, and it also includes a detector 2, a field lens 3, a first plane mirror 4, a second plane mirror 5, and a light source. Support 6, horizontal turntable 7, detector mounting frame 8, field lens mounting frame 9, connecting rod 10, sample 11, sample holder 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 at the upper end of the connecting rod 10 from top to bottom. The connecting rod 10 is vertically connected to the first rotating shaft 14 through a coupling, and the first rotating shaft 14 is arranged between the two end plates 15 In between, the bottom ends of the two end plates 15 are fixed on the horizontal turntable 7; the detector 2 i...

Example Embodiment

[0048] Specific implementation manner 2: the following combination figure 2 To explain this embodiment, this embodiment is a further explanation of Embodiment 1. This embodiment also includes a first three-phase stepping motor 17,

[0049] The output shaft of the first three-phase stepping motor 17 is connected to the first rotating shaft 14 through a sheet coupling. 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 zenith angle direction. 上运动.

[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. 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 The detector coupling is connected to the first rotating shaft 14, and the first three-phase stepping motor 17 is also connected to the first rotating shaft 14 through ...

Example Embodiment

[0052] Specific implementation manner three: the following combination image 3 This embodiment is described. This embodiment is a further description of the first or second embodiment. This embodiment also includes a driven gear 18, a driving gear 19, and a two-phase stepper motor 20. The diameter of the driven gear 18 is larger than that of the driving gear 19. diameter of;

[0053] The driven gear 18 is sleeved on the outer surface of the horizontal turntable 7. The driven gear 18 is matched with the driving gear 19, and the driving gear 19 is sleeved on the output shaft of the two-phase stepping motor 20, which is used for the two-phase stepping motor 20. This drives the driving gear 19 to rotate, thereby driving the horizontal turntable 7 to rotate in the horizontal direction, so that the azimuth angle of the detector 2 is changed.

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

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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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