Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Walter Daschner"'
Publikováno v:
Applied optics. 34(14)
We present a method to fabricate high-quality and environmentally rugged monolithic diffractive optical elements (DOE's). Analog direct-write e-beam lithography was used to produce analog resist profiles that were transferred into their substrates by
Publikováno v:
SPIE Proceedings.
Diffractive optical elements (DOEs) of the kinoform type have been fabricated on DuPont photopolymer by using a gray scale mask technology. The fabricated DOEs have high diffraction efficiency and low noise. Compared with the conventional DOE fabrica
Publikováno v:
SPIE Proceedings.
Micro-optics such as diffractive optics and computer generated holograms are essential components for modern optical design. To reduce their unit fabrication cost we describe a method of reproducing micro-optics in quantities. A true gray-level mask
Autor:
Gregory P. Behrmann, Michael T. Duignan, Walter Daschner, Sing H. Lee, Peter S. Erbach, Eric G. Johnson, Pin Long, James D. Brasher, Don A. Gregory
Publikováno v:
Optical Engineering. 37:18
An optical security system using phase encryption of biometric identification data is demonstrated. For this effort, fingerprints are used as the biometric signature. Two types of phase masks are fabricated: photopolymer film and polyimide film. The
Publikováno v:
Applied Optics. 36:4675
We present a method for reproducing diffractive optical elements in quantity. The method is compatible with VLSI microfabrication techniques and involves generating a gray-scale mask. The gray-scale mask is employed in an optical aligner to expose an
Publikováno v:
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 14:3730
General aspheric refractive microlens arrays with an almost 100% fill factor are useful in a wide range of applications ranging from display, optoelectronic interconnections, or improving the efficiency of detector arrays to lithography techniques ut
Publikováno v:
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 13:2729
A method for mass fabrication of environmentally rugged monolithic diffractive optical elements (DOEs) is demonstrated. A one‐step optical exposure, with a gray level mask, was used to produce analog resist profiles that were transferred into their
Publikováno v:
Applied Optics. 34:2436
Optoelectronic systems based on space-variant optics give great freedom to the system designer in terms of interconnect topologies. One feature of space-variant systems is that they can achieve a high interconnect density. However, this density is ac
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Conference
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