Back to results
US 10,240,974 B2Granted
Infrared projector and infrared observation system
AssigneeSharp Kabushiki Kaisha
InventorsKoji Takahashi, Hidenori Kawanishi
Life of this patent
Estimating the term…
Abstract
An infrared projector and an infrared observation system by which unevenness of wavelengths in a projection pattern is reduced are provided. An infrared projector (100) is provided with infrared semiconductor laser elements (11a to 11d) that emit near-infrared laser light beams (L1a, L1b, L1c, and L1d), a scattering member (51) that receives and scatters the near-infrared laser light beams, and a projecting member (61) that projects the near-infrared laser light beams scattered by the scattering member.
Claims20
An infrared projector, comprising:
- a plurality of laser light sources that emit near-infrared laser light beams;
- a scattering member that receives the near-infrared laser light beams emitted from the plurality of laser light sources and scatters the received near-infrared laser light beams;
- a light absorbing material surrounding the scattering member;
- and
- a projecting member that projects the near-infrared laser light beams scattered by the scattering member, wherein
- the near-infrared laser light beams are focused in an overlapping manner on a front surface of the scattering member.
3 more elements
An infrared projector, comprising:
- a plurality of laser light sources that emit near-infrared laser light beams;
- a scattering member that receives the near-infrared laser light beams emitted from the plurality of laser light sources and scatters the received near-infrared laser light beams;
- a light absorbing material surrounding the scattering member;
- and
- a projecting member that projects the near-infrared laser light beams scattered by the scattering member, wherein
- the near-infrared laser light beams enter the scattering member from directions that are different from each other.
3 more elements
An infrared projector, comprising:
- a plurality of laser light sources that emit near-infrared laser light beams;
- a scattering member that receives the near-infrared laser light beams emitted from the plurality of laser light sources and scatters the received near-infrared laser light beams;
- a light absorbing material surrounding the scattering member;
- a projecting member that projects the near-infrared laser light beams scattered by the scattering member;
- and
- an optical transmission path that transmits the near-infrared laser light beams in a mixed manner.
3 more elements
Dependencies are inferred from the claim text.