Optical: systems and elements – Glare or unwanted light reduction
Patent
1990-05-04
1991-12-03
Sugarman, Scott J.
Optical: systems and elements
Glare or unwanted light reduction
358252, 359817, G02B 2700, H04N 572
Patent
active
050695290
ABSTRACT:
A portable display equipment includes an image display unit, and an external light preventing member of a polygonal cylinder. The external light preventing member is detachably mounted in front of the display portion of the image display unit. The external light preventing member includes a shielding member and a light-shielding member of a polygonal cylinder. The shielding member covers the periphery of the display portion of the image display unit. The light-shielding member consists of a plurality of light-shielding plates which are coupled to each other so as to be freely bent and constitute one sheet member when developed. The light-shielding member is narrowed toward the viewer side by bending coupling portions of the light-shielding plates. The shielding member is coupled to part of an edge of the light-shielding member on the display side so as to be freely bent.
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patent: 4208676 (1980-06-01), Berwick et al.
patent: 4478498 (1984-10-01), Ohno
patent: 4773747 (1988-09-01), Bresnahan
patent: 4784468 (1988-11-01), Tierney
patent: 4846553 (1989-07-01), Rice
patent: 4864190 (1989-09-01), Orr
patent: 4865420 (1989-09-01), Schmidt
Ben Loha
Citizen Watch Co. Ltd.
Sugarman Scott J.
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