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Uniform integrating sphere device and measuring method thereof

An integrating sphere, uniform technology, applied in the field of spectral measurement, can solve the problems of large measurement error, difficult to accurately measure the spectral transmission characteristics of lens or lens, inconsistent light direction, etc., to achieve stable luminous flux, avoid luminous flux loss, and reduce errors. Effect

Inactive Publication Date: 2021-02-23
天活松林光学(广州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when measuring the spectral transmission characteristics of a lens or lens, the lens or lens will change the incident direction of the light (such as image 3 As shown), the direction of the light before and after putting the measurement sample 7 is inconsistent, which affects the accuracy of the measurement, and each time the measurement sample 7 is placed, the deviation between the center of the sample and the center of the light hole will also cause the direction of the light each time Variations that affect the precision of the measurement
Especially for lenses with shorter focal lengths or lenses, the measurement error is even greater
It makes it difficult for existing spectrometers to accurately measure the spectral transmission characteristics of lenses or lenses

Method used

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  • Uniform integrating sphere device and measuring method thereof
  • Uniform integrating sphere device and measuring method thereof
  • Uniform integrating sphere device and measuring method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as Figure 4 As shown, a uniform integrating sphere device includes a first hemisphere and a second hemisphere, each hemisphere is a hollow body, the first hemisphere is provided with a light hole, the first hemisphere and the second hemisphere The junction is provided with a number of light holes, and each light hole is connected to a first receiver, and each first receiver is connected to a second receiver through an optical fiber. The light exit holes are emitted and converged to the second receivers through the first receivers.

[0033] In this embodiment, the above-mentioned first hemisphere and the second hemisphere are hemispheres with the same size, and the first receiver and the second receiver include but are not limited to optical fiber joints, photosensitive elements and the like. The working principle of the above-mentioned device is as follows: the incident light is incident by the light entrance hole located in the first hemisphere, and the luminous...

Embodiment 2

[0046] Such as Figure 9 As shown, a uniform integrating sphere device measurement method, wherein the uniform integrating sphere device includes a first hemisphere and a second hemisphere, each hemisphere is a hollow body, the first hemisphere is provided with a light hole, the first half The junction of the sphere body and the second hemisphere is provided with several light exit holes, each light exit hole is connected to a first receiver, and each receiver is connected to the second receiver through an optical fiber. The uniform integrating sphere measurement method includes the following steps:

[0047] S1. The incident light enters each hemisphere through the light hole for uniform reflection;

[0048] S2. The uniformly reflected incident light exits from each light exit hole, and merges into the second receiver through each first receiver.

specific Embodiment

[0050] refer to Figure 5 to Figure 8, this specific embodiment discloses a uniform integrating sphere provided with four light exit holes, including a first hemisphere 5 and a second hemisphere 6, each hemisphere is a cavity, and the inner wall of the cavity is coated with corresponding light wavelength The reflective layer 8 is 400nm to 700nm, the geometric center of the first hemisphere 5 is provided with a light inlet 1, and the junction of the first hemisphere 5 and the second hemisphere 6 is equidistantly provided with four light outlets (such as Figure 5 Shown are respectively light exit hole 21, light exit hole 22, light exit hole 23 and light exit hole 24), wherein the central axis of light entrance hole 1 and the central axes of the four light exit holes are all perpendicular to each other, and connecting optical fibers are arranged in each light exit hole The branch fiber optic connector (such as Figure 5 Shown are optical fiber connector 91, optical fiber connec...

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Abstract

The invention discloses a uniform integrating sphere device and a measuring method thereof. The device comprises a first hemispheroidal body and a second hemispheroidal body, the first hemispheroidalbody and the second hemispheroidal body are both cavities, the first hemispheroidal body is provided with a light inlet hole, and the joint of the first hemispheroidal body and the second hemispheroidal body is provided with a plurality of light outlet holes; each light outlet hole is connected with a first receiver, the first receivers are converged to a second receiver through optical fibers, and incident light enters the hemispheres through the light inlet holes, is evenly reflected, then is emitted out of the light outlet holes and is converged to the second receiver through the first receivers. Based on the plurality of light outlet holes, incident light enters from the light inlet hole, exits from the light outlet holes after being uniformly reflected for multiple times in the uniform integrating sphere, and is converged at the second receiver through the first receivers, so that the stable output of the total luminous flux is realized, and the error between the luminous flux ofthe light inlet hole and the luminous flux of the light outlet hole is reduced.

Description

technical field [0001] The invention relates to the technical field of spectrum measurement, in particular to a uniform integrating sphere device and a measurement method thereof. Background technique [0002] The integrating sphere is a spherical cavity, which is usually joined by two hemispherical cavities (left hemisphere 5 and right hemisphere 6). A light hole 1 and a light exit hole 2, where a receiver 3 such as an optical fiber head or a photosensitive element is generally installed at the light exit hole. The central axis of the light exit hole and the central axis of the light entrance hole are perpendicular to each other or form an angle of 45°. The shape of the integrating sphere can be other shapes such as spherical or square. The function of the integrating sphere is to make the incident light 4 incident from the light entrance hole 1 reflect multiple times in the integrating sphere to form a relatively uniform illuminance on the wall of the spherical cavity; t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
CPCG01M11/02
Inventor 姚建政马永明
Owner 天活松林光学(广州)有限公司
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