Single prism aberration compensation
AssigneeTexas Instruments Incorporated
InventorPatrick Rene Destain
Life of this patent
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Abstract
System and method for utilizing two prisms spatially separated is provided. The two prisms spatially separated allows the two prisms typically found in a TIR optical relay system to be spatially separated. In an embodiment, one or more optical relay lenses are interposed between the two prisms. The prism positioned on the object side may be integrated into one or more of the optical relay lenses, thereby further simplifying the optical relay design. In another embodiment, the one or more optical relay lenses may have an optical axis that is offset from the optical axis of incoming light to cause a pupil shift. An aspherical lens may be included to correct for the pupil shift and create a more uniform illumination image.
Claims8
An optical arrangement for use in an imaging system, the optical arrangement comprising:
- a total internal reflection (TIR) assembly, the TIR assembly including a first prism and a second prism, the first prism is positioned to receive light along a first axis, wherein the first surface of the prism receiving light along the first axis is non-orthogonal to the first axis;
- and
- one or more intermediate lenses interposed along an optical path between the first prism and the second prism.
An optical arrangement for use in an imaging system, the optical arrangement comprising:
- a total internal reflection (TIR) assembly, the TIR assembly including a first prism having a non-planar surface and a second prism;
- and
- one or more intermediate lenses interposed along an optical path between the first prism and the second prism.
Dependencies are inferred from the claim text.