Optical system and method
First Claim
1. An optical system in a video probe assembly, the optical system including:
- a plurality of lenses, each having at least one curved surface, configured to refract separate decomposed linearly polarized rays under different refractive indexes to form a plurality of different focal lengths;
a plurality of light modulating elements each configured to modulate a polarization state of the linearly polarized rays proceeding from at least one of the plurality of lenses and passing through the respective light modulating elements in response to a control signal; and
a polarizer element configured to filter out some of the linearly polarized rays proceeding from at least one of the plurality of light modulating elements and passing through the polarizer element; and
an imager located adjacent to the polarizer element to receive polarized rays proceeding from the polarizer element.
3 Assignments
0 Petitions
Accused Products
Abstract
An optical system in a video probe assembly includes a plurality of lenses configured to refract separate linearly polarized rays under different refractive indexes to form a plurality of different focal lengths. The optical system includes at least one light modulating element that modulates a polarization state of the linearly polarized rays passing through the at least one light modulating element in response to a control signal. The optical system includes a polarizer element that filters out some of the modulated linearly polarized rays passing through the polarizer element. A method of inspecting a target with an optical system of a video probe assembly is also provided.
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Citations
20 Claims
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1. An optical system in a video probe assembly, the optical system including:
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a plurality of lenses, each having at least one curved surface, configured to refract separate decomposed linearly polarized rays under different refractive indexes to form a plurality of different focal lengths; a plurality of light modulating elements each configured to modulate a polarization state of the linearly polarized rays proceeding from at least one of the plurality of lenses and passing through the respective light modulating elements in response to a control signal; and a polarizer element configured to filter out some of the linearly polarized rays proceeding from at least one of the plurality of light modulating elements and passing through the polarizer element; and an imager located adjacent to the polarizer element to receive polarized rays proceeding from the polarizer element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An optical system in a video probe assembly, the optical system including:
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a plurality of lenses, each having at least one curved surface, configured to refract separate linearly polarized rays under different refractive indexes to form a plurality of different focal lengths; at least one light modulating element configured to modulate a polarization state of the linearly polarized rays passing through the at least one light modulating element in response to a control signal; and a rotatable polarizer element configured to filter out some of the linearly polarized rays passing through the polarizer element; and an imager located adjacent to the polarizer element to receive polarized rays proceeding from the polarizer element. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of inspecting a target with an optical system of a video probe assembly, the method including:
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providing a plurality of lenses, each having at least one curved surface, for refracting separate decomposed linearly polarized rays under different refractive indexes to form a plurality of different focal lengths; directing the linearly polarized rays through at least one light modulating element; and focusing the linearly polarized rays proceeding from a polarizer element onto an imager. - View Dependent Claims (20)
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Specification