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Beam generating apparatus

A technology for generating devices and beams, applied in optics, optical components, lenses, etc., to solve problems such as uneven illumination and decreased optical quality

Active Publication Date: 2014-06-18
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Speckle is an irregular noise-like pattern (such as irregular bright and dark spots), which will lead to uneven illumination on the illuminated surface, resulting in a decrease in the optical quality of the device using this laser light source

Method used

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Embodiment Construction

[0046] Figure 1A It is a schematic top view of a light beam generating device according to an embodiment of the present invention. Figure 1B for Figure 1A Schematic side view of the beam generating device. Please refer to Figure 1A and Figure 1B , the light beam generating device 100 of this embodiment includes a laser light source 110 , a speckle suppression module 120 , a light homogenization module 130 and a driving unit 140 . The laser light source 110 outputs a laser beam B1. In this embodiment, the laser beam B1 is, for example, a pulsed laser beam.

[0047] The beam generating device 100 of this embodiment may further include a beam expander unit 150 disposed on the transmission path of the laser beam B1, and located between the laser light source 110 and the speckle suppression module 120, wherein the laser beam B2 after passing through the beam expander unit 150 The diameter is for example between 10 and 20 mm. In addition, the wavelength of the laser beam B1...

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Abstract

A beam generating apparatus includes a laser light source, a speckle suppressing module, a light homogenizing module and a driving unit. The laser light source outputs a laser beam. The speckle suppressing module includes two biconic lenses and a diffuser. The first biconic lens is disposed on a transmission path of the laser beam. The diffuser is located on the transmission path of the laser beam between the first and second biconic lenses. The light homogenizing module is disposed on the transmission path of the laser beam from the second biconic lens. The driving unit drives the diffuser to move with respect to the laser beam so that the ratio of the M2 of the laser beam exiting from the second biconic lens in a first direction to the M2 thereof in a second direction is greater than 2, wherein the two directions are substantially perpendicular to each other.

Description

technical field [0001] The invention relates to a light beam generating device. Background technique [0002] The laser beam has good collimation, high power and light intensity, so the laser beam generating device has a wide range of applications in modern industry, such as highly collimated light sources for laboratories, laser pointers for reporting, reading Or the laser light source used when burning a CD, the laser light source used by the laser mouse, the laser light source of various measuring instruments, the laser light source in the display field, the laser source in the optical fiber communication, and even the laser light source of the instruments in the biomedical field, etc. . [0003] Since the laser beam emitted by the laser light source has high coherence, when the laser beam irradiates an uneven object surface (such as a lens, a reflector, etc.), the laser beam from the surface of the object generates interference (interference), and the Speckles are gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09G02B27/48
CPCG02B27/48G02B3/005
Inventor 李闵凯林于中陈政寰刘松河
Owner IND TECH RES INST
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