Light-sensing device
First Claim
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1. A light-sensing device comprising:
- a light source including a semiconductor laser;
a light-transmitting optical system having a lens surface and a diffraction grating surface arranged on the optical axis of light emitted from said light source; and
a light-receiving detection system that detects any of said emitted light that is reflected from an object to be inspected, wherein said emitted light is diffracted in at least two orthogonal directions by said diffraction grating surface.
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Abstract
A light-sensing device comprises a light source consisting of a semiconductor laser, a light-transmitting optical system having a lens surface and a diffraction grating surface arranged on the optical axis of light emitted from this light source, and a light-receiving detection system that detects any of the emitted light that is reflected from an object to be inspected. This emitted light is diffracted in at least two intersecting directions by the diffraction grating surface.
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17 Claims
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1. A light-sensing device comprising:
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a light source including a semiconductor laser; a light-transmitting optical system having a lens surface and a diffraction grating surface arranged on the optical axis of light emitted from said light source; and a light-receiving detection system that detects any of said emitted light that is reflected from an object to be inspected, wherein said emitted light is diffracted in at least two orthogonal directions by said diffraction grating surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification