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US 12,620,782 B2Granted
Optical methods for reducing point spread function in phase light modulator applications
AssigneeTexas Instruments Incorporated
InventorsAlexander Lyubarsky, Terry A. Bartlett, Kristofer Oberascher
Life of this patent
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Abstract
A system includes at least one laser configured to produce laser light and an optical element configured to produce shaped light responsive to receiving the laser light. The system also includes an optical phase modulator (OPM) optically coupled to the optical element, the OPM configured to modulate the shaped light to produce modulated light, where the optical element is configured to reduce a point spread function of the modulated light in a far field.
Claims19
A system comprising:
- at least one laser configured to produce laser light;
- an optical element configured to produce shaped light responsive to receiving the laser light;
- an optical phase modulator (OPM) optically coupled to the optical element, the OPM configured to modulate the shaped light to produce modulated light;
- a dichroic mirror optically coupled to the OPM;
- a reflective phosphor optically coupled to the dichroic mirror;
- and
- a reflective diffuser optically coupled to the dichroic mirror.
4 more elements
A system comprising:
- a first laser assembly configured to produce first light having a first characteristic;
- a second laser assembly configured to produce second light having a second characteristic different than the first characteristic;
- an optical combining element optically coupled to the first laser assembly and to the second laser assembly, the optical combining element configured to combine the first light having the first characteristic and to the second light having the second characteristic to produce combined light comprising the first light and the second light;
- an optical phase modulator (OPM) optically coupled to the optical combining element, the OPM configured to modulate the combined light to produce modulated light;
- a first fast-axis collimator (FAC) lens optically coupled to the first laser assembly;
- a first slow-axis collimator (SAC) lens optically coupled to the first FAC;
- a second FAC lens optically coupled to the second laser assembly;
- and
- a second SAC lens optically coupled to the second FAC.
6 more elements
A system comprising:
- at least one laser configured to produce laser light;
- an optical element configured to produce shaped light responsive to receiving the laser light;
- an optical phase modulator (OPM) optically coupled to the optical element, the OPM configured to modulate the shaped light to produce modulated light, wherein the optical element is configured to reduce a point spread function of the modulated light in a far field;
- a spatial light modulator (SLM) optically coupled to the OPM, the SLM configured to produce an image based on the modulated light;
- and
- a birefringent prism optically coupled to the OPM.
3 more elements
Dependencies are inferred from the claim text.