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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.
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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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