Filter assembly

Details Filter assembly Filter assembly

1995-08-30

1997-11-18

Nguyen, Thong

Optical: systems and elements

Glare or unwanted light reduction

Display window

359601, 359809, 359811, G02B 2700, G02B 702

Patent

active

056893710

ABSTRACT:
An optical filter assembly for use on a visual display device is disclosed. Included in the assembly is a frame defining a viewing aperture which frame is mounted on a visual display device such that the aperture is in registry with the screen of the visual display device. An optical filter is provided for covering the aperture. The frame assembly includes a plurality of side walls which extend the distance sufficient for reducing the passage of room light to behind the optical filter. The frame assembly also includes structure for holding releasably the optical filter to the frame assembly and structure associated with the frame assembly for spacing the optical filter from the display screen. Included is spacing structure which includes a protrusion intrical with the frame for contacting the display screen for thereby physically spacing the filter from the display screen.

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Brochure by 3M Safety and Security Systems Division, 3M Center Building, St. Paul, MN 55144, "3M Computer Filters," 1994.
Brochure by OCLI, Optical Coating Laboratory, Inc., 2789 Northpoint Parkway, Santa Rosa, CA, "Glare/Maximum Plus Guard," (Both sheets are relevant.), Nov. 1994.
Brochure by ACCO USA, Inc., 770 S. ACCO Plaza, Wheeling IL, "Anti-Glare Screen Filters," (Document is relevant), Jun. 1994.
Brochure by ACCO USA, Inc., 770 S. ACCO Plaza, Wheeling IL, "CAD/CAM and Security Screen Filters," (Both sides of sheet are relevant), Jun. 1993.
Brochure by 3M Commercial Office Supply Division, 3M Center Building, St. Paul, MN "3M Innovation," (All four sheets are relevant), 1995.

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