From Event: SPIE Optical Engineering + Applications, 2016
The design and performance of a compact, adaptable autostigmatic alignment modulate that can be used as an autocollimator or autostigmatic microscope is described. The new instrument utilizes LED illumination and reticle projection and is compared with a laser diode based point source microscope. Measurement characteristics and practical differences and similarities between the instruments are described.
William P. Kuhn, "Design and performance of a new compact adaptable autostigmatic alignment tool," Proc. SPIE 9951, Optical System Alignment, Tolerancing, and Verification X, 995109 (Presented at SPIE Optical Engineering + Applications: August 28, 2016; Published: 27 September 2016); https://doi.org/10.1117/12.2239213.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon