Infrared laser projection device containing safety monitoring function

An infrared laser, safety monitoring technology, applied in laser parts, lasers, semiconductor lasers, etc., can solve problems such as internal device damage, and achieve the effect of improving sensitivity

Pending Publication Date: 2019-03-08
AMICC OPTO ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is an indirect method to speculate whether the device is damaged. There may be a

Method used

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  • Infrared laser projection device containing safety monitoring function
  • Infrared laser projection device containing safety monitoring function
  • Infrared laser projection device containing safety monitoring function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 , 2 As shown, an infrared laser projection device with a safety monitoring function includes a base 10, a light source 11, an infrared induction receiver 12, a lens barrel 13, a dodging sheet 14, and a reflective film 15. The light source 11 is fixed on the base 10 , used to generate light beams; the infrared induction receiving device 12 is fixed on the base 10 for receiving the infrared beam reflected by the infrared laser to generate current; the lens barrel 13 is fixed on the base 10 for blocking ambient light and fixing Place the dodging sheet 14, the dodging sheet 14 is fixed on the lens barrel 13, and is used to emit the light beam generated by the light source 11 uniformly out of the device, and the reflective film 15 is fixed on the surface of the dodging sheet 14 facing the wafer, the position Located around the dodging sheet 14. When the light beam passes through the uniform sheet 14 or the reflective film 15, it will be partially reflected...

Embodiment 2

[0034] Such as image 3 , 4 As shown, an infrared laser projection device with a safety monitoring function includes a base 10, a light source 11, an infrared induction receiver 12, a lens barrel 13, an optical diffraction element 17, and a reflective film 15. The light source 11 is fixed on the base 10 , used to generate light beams; the infrared induction receiving device 12 is fixed on the base 10 for receiving the infrared beam reflected by the infrared laser to generate current; the lens barrel 13 is fixed on the base 10 for blocking ambient light and fixing An optical diffraction element 17 is arranged, and the optical diffraction element 17 is fixed on the lens barrel 13, and is used for emitting the light beam that the light source 11 takes place uniformly out of the device, and a collimating lens 16 is arranged below the optical diffraction element 17, for receiving and Converging the light beam generated by the light source 11 , the reflective film 15 is fixed on th...

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Abstract

The invention discloses an infrared laser projection device containing a safety monitoring function. The device comprises a base, a light source, an infrared induction receiver, a lens cone, a beam homogenizer, and a reflecting film; the light source is fixed on the base; the infrared induction receiver is fixed on the base; the lens cone is fixed on the base; the beam homogenizer is fixed on thelens cone; the reflecting film is fixed on a surface, towards a wafer, of the beam homogenizer and located surrounding the beam homogenizer. As the other way, the beam homogenizer is replaced with anoptical diffraction element, a collimation lens is arranged below the optical diffraction element and used for receiving and aggregating the beam produced by the light source; the reflecting film is fixed on the face, towards the wafer, of the collimation lens and located surrounding the collimation lens. By adopting a built-in infrared induction receiver disclosed by the invention, whether the infrared laser device is in a normal state can be monitored through the reflected infrared.

Description

technical field [0001] The invention relates to an infrared laser projection device with a safety monitoring function, belonging to the technical field of LED manufacturing. Background technique [0002] With the advancement of science and technology, whether it is industrial production or daily life, people's demand for automation and intelligence is getting higher and higher. At present, ordinary infrared has been widely used in the fields of optical communication and security. However, in some special fields, such as face 3D recognition, iris recognition, off-screen fingerprint recognition and vehicle radar, a light source with high power, strong directivity and long irradiation distance is required. [0003] As a light source that can meet the above requirements, infrared lasers have been increasingly used in consumer products such as face 3D recognition, iris recognition, under-screen fingerprint recognition and vehicle radar. However, due to its high power, high dire...

Claims

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Application Information

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IPC IPC(8): H01S3/00H01S5/00G01M11/00
CPCH01S3/0014H01S5/0014G01M11/00
Inventor 盛刚刘跃斌陶燕兵
Owner AMICC OPTO ELECTRONICS TECH
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