Projection type display

Details Projection type display Projection type display

1996-07-31

1998-06-16

Dowling, William

Optics: image projectors

Plural

353 38, 353 99, 362234, 362299, G03B 2128

Patent

active

057659346

ABSTRACT:
In a light source apparatus for use with a projection type display, at least one light source is provided for emitting light. A reflector is provided correspondingly to the light source in order to gather the light emitted from the light source into a small area to form a converged luminous flux. A light guide has at least one light input section into which the luminous flux is coupled. The light input section is provided correspondingly to the light source. The light guide combines the luminous flux received through the light input sections into a single beam of luminous flux. The light-guide has at least one light output section from which said luminous flux is output. The light source apparatus may also include light-refracting element provided between the reflector and the light-guide. The light-refracting element receives the converged luminous flux from the reflector to refract the converged luminous flux so as to couple the converged luminous flux, as a uniform luminous flux, into the light-guide.

REFERENCES:
patent: 5046837 (1991-09-01), Stroomer
patent: 5108172 (1992-04-01), Flasck
patent: 5299036 (1994-03-01), Nicolas et al.
patent: 5300966 (1994-04-01), Uehira et al.
patent: 5414600 (1995-05-01), Strobl et al.
patent: 5649753 (1997-07-01), Masumoto

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