OPTICAL ARRANGEMENT FOR COMPENSATION OF THERMALLY-INDUCED ASTIGMATISM OF LENS
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United States of America
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Issued Date -
Nov 7, 2024
app pub date -
May 2, 2024
filing date -
May 2, 2024
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status (Latency Note)
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Abstract
An apparatus includes a sample stage region, an optical assembly, and a camera assembly. The optical assembly includes an objective element, a tube lens, and a compensating element. The objective element provides a field of view. at least a portion of the sample stage region is within the field of view. The objective element has a variable astigmatism. The tube lens is configured to receive light transmitted through the objective element and further transmit the light through an image space. The compensating element is in the image space. The compensating element is configured to induce a second astigmatism. The second astigmatism is configured to offset the variable astigmatism. The camera assembly is configured to receive light transmitted from the compensating assembly.
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