Notched adjustable aperture

Details Notched adjustable aperture Notched adjustable aperture

2007-03-20

2007-03-20

Palmer, Phan T. H. (Department: 2874)

Optical waveguides

Optical fiber bundle

C385S116000, C385S120000, C382S168000, C353S088000

Reexamination Certificate

active

10748952

ABSTRACT:
An adjustable aperture system includes a stationary aperture operable to remove a portion of a lower intensity light communicated through a light bundle. The system also includes an adjustable aperture comprising a notch and capable of varying an amount of projection light communicated through the light bundle. In one particular embodiment, the notch operates to reduce the effect of the adjustable aperture on a high intensity light communicated through the light bundle. The system further includes a control motor operable to receive a control signal and to selectively manipulate the adjustable aperture.

REFERENCES:
patent: 5442414 (1995-08-01), Janssen et al.
patent: 2002/0126264 (2002-09-01), Dewald et al.
patent: 2005/0146520 (2005-07-01), Ikeda
patent: 2005/0156871 (2005-07-01), Ikeda
L.J. Hornbeck, “Digital Light Processing™: A New MEMS-Based Display Technology,” Texas Instruments, white paper, 22 pages.
G. Hewlett and W. Werner, “Analysis of Electronic Cinema Projection with the Texas Instruments Digital Micromirror Device™ Display System,” Texas Instruments, white paper, 10 pages.
S.M. Penn, et al., “Adaptive Illumination Modulator,” U.S. Appl. No. 10/326,237, currently pending, Dec. 20, 2003.

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