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22 August 2017 Optical alignment using a CGH and an autostigmatic microscope
Robert E. Parks
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Proceedings Volume 10377, Optical System Alignment, Tolerancing, and Verification XI; 103770B (2017) https://doi.org/10.1117/12.2273033
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States
Abstract
We show how custom computer generated holograms (CGH) are used along with an autostigmatic microscope (ASM) to align both optical and mechanical components relative to the CGH. The patterns in the CGHs define points and lines in space when interrogated with the focus of the ASM. Once the ASM is aligned to the CGH, an optical or mechanical component such as a lens, a well-polished ball or a cylinder can be aligned to the ASM in 3 or 4 degrees of freedom and thus to the CGH. In this case we show how a CGH is used to make a fixture for cementing a doublet lens without the need for a rotary table or a precision vertical stage.
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Robert E. Parks "Optical alignment using a CGH and an autostigmatic microscope", Proc. SPIE 10377, Optical System Alignment, Tolerancing, and Verification XI, 103770B (22 August 2017); https://doi.org/10.1117/12.2273033
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KEYWORDS
Computer generated holography
Microscopes
Optical alignment
Kinematics
Light
Optical lithography
Optical spheres
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