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US 11,131,845 B2Granted
High speed random access variable focusing and steering of a patterned line
AssigneeThe Board of Trustees of the Leland Stanford Junior University
InventorsStephen S. Hamann, Olav Solgaard
Life of this patent
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Abstract
A patterned line of optical radiation can be steered in the other two directions (e.g., line patterned in y, steered in x and z) with a 1-D phase shifter array in a Fourier optics configuration. Preferably the patterned line is provided by forming a line focus and modulating it with an array of grating light valve devices in an amplitude modulation configuration. Phase modulation is preferably provided with an array of grating light valve devices in a phase modulation configuration.
Claims12
Optical apparatus comprising:
- means for providing a first line-focus of light that is amplitude modulated along its length to provide amplitude modulated light;
- first Fourier optics configured to receive the amplitude modulated light and to provide a second line-focus, wherein a second light pattern of the second line-focus is substantially a 2-D Fourier transform of a first light pattern of the first line-focus;
- a 1-D phase modulator array disposed to align with the second line-focus and to provide phase modulated light.
Dependencies are inferred from the claim text.