Combination specular and diffuse image CHMSL

Details Combination specular and diffuse image CHMSL Combination specular and diffuse image CHMSL

1993-11-22

1996-03-05

Lerner, Martin

Optical: systems and elements

Holographic system or element

Head up display

359 14, 359 22, 359 25, G02B 532, G03H 130

Patent

active

054972515

ABSTRACT:
A hologram structure for use in a holographic center high mounted stoplight system for a vehicle. The hologram structure includes an illumination source for providing a reconstruction beam, a first array of non-overlapping hologram cells and non-hologram cells, and a second array of non-overlapping hologram and non-hologram cells. Each hologram cell of the first array produces a specular image that is viewable in a first predetermined angular field pursuant to diffraction of a portion of the reconstruction beam, and each hologram cell of the second array produces a diffuse image that is viewable in a second predetermined angular field pursuant to diffraction of a portion of the reconstruction beam. The specular images and diffuse images produced by the first and second holograms form stoplight illumination.

REFERENCES:
patent: 3785736 (1974-01-01), Spitz et al.
patent: 4677629 (1987-06-01), Lesh
patent: 4807978 (1989-02-01), Grinberg et al.
patent: 5106174 (1992-04-01), Smith
patent: 5186533 (1993-02-01), Hori
patent: 5196951 (1993-03-01), Wreede
patent: 5289298 (1994-02-01), Smith
patent: 5291316 (1994-03-01), Haberman et al.

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