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Device for detecting splitting ratio of coupler for laser projector in real time

A laser projector, real-time detection technology, used in testing optical performance and other directions

Inactive Publication Date: 2019-08-30
德州可视激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the flame light is transmitted to the detector through the optical brazing and participates in the operation.
So we can only wait for the flame light to exit and then measure the split ratio

Method used

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  • Device for detecting splitting ratio of coupler for laser projector in real time
  • Device for detecting splitting ratio of coupler for laser projector in real time
  • Device for detecting splitting ratio of coupler for laser projector in real time

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Embodiment Construction

[0013] Such as figure 1 , figure 2 and image 3 As shown, a real-time detection device for the splitting ratio of a coupler for a laser projector is composed of a light source 1, a modulator 2, a torch 3, a demodulator 4, a detector 5, and a detector 6. The light source 1 communicates with the modulator 2 through an optical fiber The AC modulated light converted by the modulator is connected to the torch 3 through an optical fiber, the torch 3 is connected to the demodulator 4, and the DC demodulated light converted by the demodulator enters two parallel detectors, and the input jack of the modulator 21 An output jack 29 is set on one side, a power supply 27 is installed inside the modulator, a photoelectric converter 26 is set on one side of the power supply 27, an acousto-optic medium 25 is set on one side of the photoelectric converter 26, a filter 24 is set on the side of the acousto-optic medium, and a filter 24 is set on one side of the filter A beam splitter 22 is se...

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Abstract

The invention relates to a device for detecting the splitting ratio of a coupler for a laser projector in real time. A light source is connected with a modulator through an optical fibre; alternating-current modulated light converted by the modulator is connected with a torch through the optical fibre; the torch is connected with a demodulator; direct-current modulated light converted by the demodulator enters two detectors connected in parallel; an output jack is arranged at one side of the input jack of the modulator; a photoelectric converter is arranged at one side of a power supply; an acousto-optic medium is arranged at one side of the photoelectric converter; a filter is arranged on the side surface of the acousto-optic medium; a beam splitter is arranged at one side of the filter;a prism is arranged at one side of the beam splitter; a modulation module is arranged at one side of the acousto-optic medium; and the outlet of the modulation module is connected with the output jack. According to the device in the invention, modulation on the light source is increased; alternating-current modulated light reaches the demodulation end through the optical fibre, so that alternating-current modulated light is changed into direct-current light; because flame light is direct-current light, the direct-current light can be isolated; therefore, influence of flame light can be avoidedin the detector; the splitting ratio can be pre-set; automatic control can be realized; and the efficiency and the reliability of a optical splitter can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of laser projector processing and detection, in particular to a real-time detection device for the splitting ratio of a coupler used in a laser projector. Background technique [0002] Laser projectors use laser beams to transmit images. Among them, the optical components of the laser projector are mainly composed of red, green and blue three-color light valves, beam combining X prisms, projection lenses and driving light valves. In a laser projector, there are red, green and blue lasers. The laser beam is expanded by the corresponding optical elements and processing chips in the machine, and then transmitted to the X prism to integrate the three laser beams, and then the integrated laser beam is transmitted to the projection screen by the projection objective lens to complete the entire laser projector display process. . The splitting ratio of the laser projector coupler is an important parameter, and no...

Claims

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Application Information

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IPC IPC(8): G01M11/02
CPCG01M11/02
Inventor 任淑平汪轶崔健田占军
Owner 德州可视激光科技有限公司
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