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Optical Mechanical Display Device

IP.com Disclosure Number: IPCOM000098534D
Original Publication Date: 1959-Feb-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Knight, JR: AUTHOR

Abstract

A matrix of lenses forms a display device which depends on ambient light as its primary source of illumination. Mounted behind each lens X is a reflector Y attached to a movable support Z. The support has two stable positions; the first of which, position 1, places the reflector at the focal point of the lens; and the second of which, position 2, places the reflector at a point far removed from the focal point. When the support and the reflector are in position 1, there is almost 100% reflection of ambient light entering the lens, and the lens appears light. When the support and the reflector are in position 2, there is virtually no reflection of light entering the lens, and the lens appears dark. By selectively positioning the supports, it is possible to obtain any desired character on the face of the display board.

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Optical Mechanical Display Device

A matrix of lenses forms a display device which depends on ambient light as its primary source of illumination. Mounted behind each lens X is a reflector Y attached to a movable support Z. The support has two stable positions; the first of which, position 1, places the reflector at the focal point of the lens; and the second of which, position 2, places the reflector at a point far removed from the focal point. When the support and the reflector are in position 1, there is almost 100% reflection of ambient light entering the lens, and the lens appears light. When the support and the reflector are in position 2, there is virtually no reflection of light entering the lens, and the lens appears dark. By selectively positioning the supports, it is possible to obtain any desired character on the face of the display board.

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