Metallized high intensity gauge pointer

Details Metallized high intensity gauge pointer Metallized high intensity gauge pointer

1996-10-15

1999-06-15

Lazarus, Ira S.

Illumination

Illuminated scale or dial

Edge illuminated modifier or light rod/pipe

362 26, 362 29, 362 30, G01D 1128

Patent

active

059114924

ABSTRACT:
A transparent pointer has a rear surface coated with white paint and the remainder is covered by a highly reflective metal layer except for a light emitting indicator strip and a light receiving surface. Stationary high flux LEDs mounted behind the pointer illuminate the light receiving surface. Received light is efficiently reflected to the indicator strip to produce a bright line suitable for viewing through a dark face plate to achieve a dark dead front appearance. To avoid reflections from the pointer the reflective layer is covered with a black film.

REFERENCES:
patent: 2536557 (1951-01-01), Levesque
patent: 2831453 (1958-04-01), Hardesty
patent: 3033155 (1962-05-01), Beckman
patent: 3216394 (1965-11-01), Blackwell
patent: 4959759 (1990-09-01), Kohler

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