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Mechanical chopper-type low transmittance simulator

A low transmittance, mechanical chopping technology, used in the testing of machine/structural components, instruments, optical instruments, etc., can solve the problem of frequent replacement of chopping boards, etc., to achieve reliable working process, safe operation process, low noise Effect

Active Publication Date: 2020-01-10
卜祥芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of frequent replacement of the chopper board, the technical problems to be solved by the mechanical chopper type low transmittance simulator disclosed by the present invention are: (1) ensuring the dynamic balance performance of the chopper board; Has two transmittance magnitudes

Method used

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  • Mechanical chopper-type low transmittance simulator
  • Mechanical chopper-type low transmittance simulator
  • Mechanical chopper-type low transmittance simulator

Examples

Experimental program
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Effect test

Embodiment 1

[0031] refer to Figure 1 to Figure 5 , to specifically describe this embodiment, a mechanical chopper-type low transmittance simulator disclosed in this embodiment, including a position adjustment bolt 1, a test seat 2, a motor seat 3, a low-voltage high-speed DC motor 4, a front protective plate 5, a rear A protective plate 6 and a circular aluminum alloy chopping plate 7 with a thickness of 2 mm. A circular aluminum alloy positioning plate 8 with a thickness of 1 mm is also included. Adjust the relative position of the low transmittance simulator and the polarimeter or the polarimeter by unscrewing the adjusting bolt 1 with a length of 45 mm. The test seat 2, the motor seat 3, the front protective plate 5 and the rear protective plate 6 are all made of aluminum alloy. The semi-cylindrical groove of the motor base 3 is matched with the semi-cylindrical lower groove of the test base 2, and the 18V high-speed DC motor 4 is fixed by 4 bolts. The axis of the motor 4 is aligned...

Embodiment 2

[0033] refer to Figure 1 to Figure 5 , to specifically describe this embodiment, a mechanical chopper-type low transmittance simulator disclosed in this implementation has 4 groups of fan-shaped openings on the chopper plate 7, which are respectively two 27° fan-shaped openings symmetrical to the center of the circle ; Two 18° fan-shaped openings; two 9° fan-shaped openings and two 1.8° fan-shaped openings; the corresponding transmittance values ​​are 15% transmittance, 10% transmittance, 5% transmittance pass rate and 1% transmittance. A group of two 30° fan-shaped openings symmetrical to the center of the circle are arranged on the positioning plate 8 . The circular aluminum alloy positioning plate 8 is positioned and fastened through its inner square and the outer square of the aluminum alloy chopper plate 7; when a transmittance test of 15% is performed, the two 30° fan-shaped openings on the positioning plate 8 are aligned with the chopper plate 7. The upper two 27° fa...

Embodiment 3

[0035] refer to Figure 1 to Figure 5 , a mechanical chopper-type low transmittance simulator disclosed in this implementation is a further description of the low transmittance mechanical chopper simulator described in Embodiment 1. In this embodiment, the chopper plate 7 adopts a thermal expansion coefficient Made of smaller ceramic materials, the thickness of the chopping plate 7 is 1 mm; the thickness of the positioning plate 8 is 0.5 mm.

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Abstract

The invention discloses a mechanical chopper-type low transmittance simulator, and belongs to the technical field of metrology and testing. The simulator provided by the invention comprises a positionadjustment bolt, a test base, a motor base, a motor, a front protective plate, a rear protective plate and a chopper plate, and further comprises a positioning plate. Two or more sets of fan-shaped openings are provided on the chopper plate, and two or more transmittance values are obtained on one chopper plate through cooperation with the positioning plate, so that the entire simulator constitutes an integrated structure, the problem of replacing the chopper plate frequently is resolved, and the working process is more reliable. The front protective plate and the rear protective plate adopta 360-degree fully enclosed structure for the chopper and positioning plates, which fully protects the high-speed rotating chopper and positioning plates. The high-speed rotating chopper and positioning plates use rigid lightweight materials to ensure the dynamic balance performance of the simulator. The chopper plate is made of a non-metal material with a small thermal expansion coefficient, which can reduce the angle value of the fan-shaped opening affected by the ambient temperature, and make the transmission value more accurate and reliable.

Description

technical field [0001] The invention relates to a measurement standard device, in particular to a measurement standard device for evaluating low transmittance parameters of a polarimeter and a polarimeter, and belongs to the technical field of measurement and testing. Background technique [0002] The characteristic that certain substances can rotate the vibration plane of polarized light is called optical rotation. Optically active substances can rotate the plane of polarized light to the left or right, and the degree of rotation is called optical rotation. Optical rotation is an important physical constant of optically active substances. By measuring optical rotation, it can be used to determine the purity of food and medicine, and can also be used to determine its content. For example, the "Chinese Pharmacopoeia" (2015 edition) requires the use of polarimetry to determine related drugs, including epinephrine, quinine sulfate, glucose, scopolamine butylbromide, and cefalot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/21G01M11/02
CPCG01N21/21G01M11/02G01M11/0207
Inventor 卜祥芳孙琦伟周庆福
Owner 卜祥芳