Binary diffractive optical element scanner
First Claim
Patent Images
1. An optical scanner for scanning a light beam along a scan line comprising:
- a light source for emitting a coherent light beam,means to collimate said coherent light beam,a first stationary binary diffractive optical element to condition said collimated light beam,a rotating disc with a plurality of second binary diffractive optical elements to diffract said light beam from said first stationary binary diffractive optical element to focus and scan along said scan line, wherein said diffracted beam to scan along said scan line is the first order diffracted beam, andmeans to block light from said plurality of second binary diffractive optical elements which is not diffracted into said first diffraction order to scan along said scan line.
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Abstract
An optical scanning system uses a stationary binary diffractive optical element and a rotating binary diffractive element to focus and scan a beam along the scan line.
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Citations
10 Claims
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1. An optical scanner for scanning a light beam along a scan line comprising:
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a light source for emitting a coherent light beam, means to collimate said coherent light beam, a first stationary binary diffractive optical element to condition said collimated light beam, a rotating disc with a plurality of second binary diffractive optical elements to diffract said light beam from said first stationary binary diffractive optical element to focus and scan along said scan line, wherein said diffracted beam to scan along said scan line is the first order diffracted beam, and means to block light from said plurality of second binary diffractive optical elements which is not diffracted into said first diffraction order to scan along said scan line. - View Dependent Claims (2, 3, 4, 5)
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6. An optical scanner for scanning a light beam along a scan line comprising:
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a light source for emitting a coherent light beam, means to collimate said coherent light beam, a first stationary binary diffractive optical element to condition and focus said collimated light beam along said scan line, a rotating disc with a plurality of second binary diffractive optical elements to diffract said light beam from said first stationary binary diffractive optical element to scan along said scan line, wherein said diffracted beam to scan along said scan line is the first order diffracted beam, and means to block light from said plurality of second binary diffractive optical elements which is not diffracted into said first diffraction order to scan along said scan line. - View Dependent Claims (7, 8, 9, 10)
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Specification