Marker apparatus

Details Marker apparatus Marker apparatus

1995-09-14

1996-12-03

Gromada, Denise

Illumination

Self powered lamp

Having plural lamp bulbs or lamp sockets

362240, 362241, 362373, 362802, 362800, 362297, 362346, 116 63P, F21V 2900

Patent

active

055801560

ABSTRACT:
A marker apparatus including a retroreflector constituted by three reflective surfaces arranged on three surfaces of a trigonal pyramid and a light source disposed on an optical axis of the retroreflector. A lens is provided in front of the retroreflector and a condensing lens is formed on the lens for condensing light emitting from the light source. A plurality of retroreflectors are provided continuously on the same plane in such a manner that directions of the three reflective surfaces, which constitute each of the retroreflector, are different from one another, and a front view of the retroreflector is regular hexagonal. A wall surface is formed between the three reflective surfaces constituting each retroreflector so that the wall surface directed in parallel with an optical axis.

REFERENCES:
patent: 1574449 (1926-02-01), Simons
patent: 3005193 (1961-10-01), Knapp et al.
patent: 3539801 (1970-11-01), Bobrick
patent: 3817596 (1974-06-01), Tanaka
patent: 3834789 (1974-09-01), Brudy
patent: 4047150 (1977-09-01), Kelly
patent: 4271408 (1981-06-01), Teshima et al.
patent: 5253150 (1993-10-01), Vanni
patent: 5319365 (1994-06-01), Hillinger
patent: 5436809 (1995-07-01), Brassier et al.

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