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Color target generator based on digital micromirror device

A digital micromirror device and generator technology, applied in the field of optical detection, to achieve the effect of wide color range, simple mechanical structure and high detection efficiency

Inactive Publication Date: 2014-06-25
XIAN TECHNOLOGICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of this invention is to research a kind of device that produces color target, to solve the problem of the color light source in the current color detection

Method used

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  • Color target generator based on digital micromirror device
  • Color target generator based on digital micromirror device
  • Color target generator based on digital micromirror device

Examples

Experimental program
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Effect test

Embodiment 1

[0022] see figure 2 , The device of the present invention is composed of an incandescent lamp 1, a spectroscopic device 2, a reflective array 3, a projection lens 4, a coupling fiber optic device 5, an integrating sphere 7, a spectral luminance meter 9, and a computer. The incident direction of the reflective array 3 is at 24° to the optical axis of the natural light emitted by the incandescent lamp 1 and the spectroscopic device 2 along the incandescent lamp 1 0 Arrangement, the DMD reflective array 3, lens 4 and optical coupler 5 are arranged along the optical axis of the reflected light of the reflective array 3, and the optical coupler 5 is connected to the integrating sphere 7 through the optical fiber 6; The probe 8 is connected with a spectrophotometer 9 , and both the spectrophotometer 9 and the reflective array 3 are connected to a computer 10 .

[0023] The working principle of the present invention is specifically as follows: the light emitted by the incandescent ...

Embodiment 2

[0025] This embodiment is listed as an application of Embodiment 1. Other light sources can be produced according to actual needs, which are selected by the user. The target light source produced by the present invention: two sets of light sources produce two colors respectively, and the two colors are produced at the exit of the integrating sphere. Set the target at the position, among the two targets, the positive four-bar target is defined as four target stripes that can transmit light, and the background is opaque; the negative four-bar target is the opposite, and the foreground and background patterns of the test pattern are formed at this time; At the two conjugate intersections of the reflective collimation optical unit, an infinite standard color target source is formed.

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Abstract

The invention relates to a color target generator based on a digital micromirror reflective array. As for existing target light sources, the combining method of the light sources and an integrating sphere is utilized, and most target light sources are achieved by manually adjusting the mechanical structures of the target light sources. According to the color target generator based on the digital micromirror device, incident light emitted by an incandescent lamp enters a DMD reflection array in an incident mode through a light splitting device, a lens and an optical fiber coupler are sequentially arranged on a reflection light path of the DMD reflection array, and the optical fiber coupler is connected with the integrating sphere through optical fibers; a spectral luminance meter is connected to the integrating sphere through a probe, and the spectral luminance meter is connected with the DMD reflection array through a computer. The color target generator based on the digital micromirror device has the advantages of being more compact in mechanical structure, high in brightness control precision and high in detection efficiency.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and in particular relates to a color target generator based on a digital micromirror reflection array. Background technique [0002] Color measurement is the main means of objectively evaluating color, and it is one of the core technologies of modern color measuring instruments. It has developed into a system integrating optics, machinery and electronics. Color detection and identification of color changes play an important role in industrial applications. With the development of modern industrial production in the direction of high speed and automation, the color recognition work, which has been dominated by human eyes for a long time in the production process, will be more and more replaced by corresponding color sensors. [0003] The difficulty of color measurement lies in the fact that the color information of objects is very extensive, and the determination of color requires the t...

Claims

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Application Information

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IPC IPC(8): G01J3/02
Inventor 于洵李晓明聂亮
Owner XIAN TECHNOLOGICAL UNIV
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