Method for manufacturing Fresnel phase reversal plate lenses

Details Method for manufacturing Fresnel phase reversal plate lenses Method for manufacturing Fresnel phase reversal plate lenses

1983-11-03

1985-07-23

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156646, 156657, 1566591, 156662, 156663, 204192E, 252 791, 350417, 350452, 430321, 430323, H01L 21306, B44C 122, C03C 1500, C03C 2506

Patent

active

045307369

ABSTRACT:
A Fresnel phase plate lens of either the phase reversal plate or sinusoidal phase reversal plate type is formed in materials hitherto not available to be used to Fresnel phase plate lenses. The material for the desired Fresnel phase plate lens may be chosen for its optimum spectral transmission range. For example, for infrared spectral transmission, silicon and germanium are chosen for the materials to have the Fresnel phase plate lens formed therein. For the visible spectral transmission range various glasses such as crowns, flints, and borosilicates glasses of suitable optical quality are useful. High silica glasses and fused quartz (silicon dioxide) are useful as the lens material for ultraviolet spectral range.

REFERENCES:
patent: 3948660 (1976-04-01), Deml
patent: 4384938 (1983-05-01), Desilets et al.
"Physical Optics" by Robert W. Wood copyrighted 1934, 1961 by Dover Publications Incorporated, New York, N.Y., pp. 37 through 39.
"Optics" by Miles V. Klein, published by John Wiley & Sons, Inc., 1970, pp. 382 through 388.
"Optical Physics" by S. G. Lipson et al., published by Press Syndicate of the University of Cambridge, England, 1981, p. 135.
"Handbook of Thin Film Technology" by L. I. Maissel and R. Glang, published by McGraw Hill 1970, on pp. 1-114 and 1-115.
"Sensitometry of Resists for Microelectronics" by D. B. Novotny, Photographic Science and Engineering, vol. 21, No. 6, Nov./Dec. 1977, pp. 351-355.
"Solid State Technology" by L. M. Ephrath, Jul. 1982, pp. 87-91.

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