LASER SPECKLE-REMOVING OPTICAL COMPONENT, LASER SOURCE AND LASER PROJECTION EQUIPMENT
First Claim
1. A laser speckle-removing optical component, comprising a beam-shrinking lens group and a diffusion sheet arranged in a laser emergent optical path, wherein the beam-shrinking lens group comprises a first beam-shrinking lens and a second beam-shrinking lens, and the diffusion sheet is positioned between the first beam-shrinking lens and the second beam-shrinking lens.
2 Assignments
0 Petitions
Accused Products
Abstract
This disclosure provides a laser speckle-removing optical component, including a beam-shrinking lens group and a diffusion sheet arranged on a laser emergent optical path, where the beam-shrinking lens group includes a first beam-shrinking lens and a second beam-shrinking lens, and the diffusion sheet is located between the first beam-shrinking lens and the second beam-shrinking lens. The arrangement of the diffusion sheet between the first beam-shrinking lens and the second beam-shrinking lens, increases the area of speckles received by the diffusion sheet component, reduces energy density of the light received, and is able to alleviate the accumulation phenomenon of dust particles on the diffusion sheet, therefore, alleviating light attenuation phenomenon, and prolonging the service life of the laser source. This disclosure also provides a double-color laser source, a three-color laser source and a laser projection equipment applying the above laser speckle-removing optical component.
-
Citations
17 Claims
- 1. A laser speckle-removing optical component, comprising a beam-shrinking lens group and a diffusion sheet arranged in a laser emergent optical path, wherein the beam-shrinking lens group comprises a first beam-shrinking lens and a second beam-shrinking lens, and the diffusion sheet is positioned between the first beam-shrinking lens and the second beam-shrinking lens.
- 7. A double-color laser source, comprises at least a red laser device and a blue laser device, respectively emitting red laser and blue laser, wherein, the double-color laser source is provided with a beam-shrinking lens group and a diffusion sheet on at least one emergent optical path of an emergent optical path of the red laser and an emergent optical path of the blue laser, wherein the beam-shrinking lens group comprises a first beam-shrinking lens and a second beam-shrinking lens, and the diffusion sheet is located between the first beam-shrinking lens and the second beam-shrinking lens.
Specification