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Dive into the research topics where I-Fu Shih is active.

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Featured researches published by I-Fu Shih.


Applied Optics | 1991

Analysis of miniature FLIR test targets

I-Fu Shih; David B. Chang

Hughes Aircraft Company has developed a miniature forward-looking infrared test target that uses differential emissivity to simulate differential temperature. This paper provides a theoretical analysis for the emissivity target. The analysis leads to a semiempirical formula that gives a reasonably good prediction of apparent temperature differences. The formula is useful for designing future emissivity targets.


1985 International Lens Design Conference | 1986

Aplanatic Two-Mirror Compact Collimator

I-Fu Shih; Lee Mickelson; David B. Chang

Design, fabrication, and test results are discussed for a compact two-mirror collimator that was diamond turned from a single piece of material.


Applied Optics | 1985

Contorted mirror reduction of projected image distortion

I-Fu Shih; David B. Chang; Peter L. Garrett; Norton L. Moise

An analysis is made of the degree to which a simple contorted mirror can reduce distortion in a projected image. Although it is impossible in general to remove the distortion completely by this means, significant reduction may be achieved. Equations are derived for the shape of a mirror which will give the maximum reduction possible. Equations are also developed for how to stress a planar mirror to create the desired optimal shape. Image blurring is estimated. An example is presented in which this technique is used to reduce the distortion which results when a projection lens appropriate for projection onto a flat screen is used instead to project onto a spherical surface from an oblique angle.


Archive | 1992

Reduced noise fiber optic towed array and method of using same

Victor Vali; David B. Chang; I-Fu Shih


Archive | 1990

Display system for multiviewer training simulators

David B. Chang; Norton L. Moise; I-Fu Shih


Archive | 1992

Adaptive optics using the electrooptic effect

Victor Vali; David B. Chang; I-Fu Shih; Bruce Youmans


Archive | 1991

Selective emissivity coatings for interior temperature reduction of an enclosure

David B. Chang; Slava A. Pollack; I-Fu Shih; Albert J. Jicha


Archive | 1990

Variable acuity non-linear projection system

David B. Chang; Norton L. Moise; I-Fu Shih


Archive | 1990

Automated evaluation of painted surface quality

David B. Chang; I-Fu Shih; Michael E. Stickney


Archive | 1989

System of holographic optical elements for testing laser range finders

I-Fu Shih; David B. Chang; James A. Arns; Gaylord E. Moss; Ronald T. Smith

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David B. Chang

University of Washington

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Bruce Youmans

Jet Propulsion Laboratory

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