Patent
Illuminating device and projector
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TLDR
An illuminating device includes a first light source unit emitting illumination beams with a first optical axis; a second light source units; and two reflecting elements arranged on both sides of an optical path of the first source unit.Abstract:
An illuminating device includes a first light source unit emitting illumination beams with a first optical axis; a second light source unit; and two reflecting elements arranged on both sides of an optical path of the first light source unit. The reflecting element arranged on the side of the second light source unit reflects the illumination beams emitted from a substantially half region on one side in an aperture plane of the parabolic reflector of, the second light source unit, towards the direction along the first optical axis. The reflecting element arranged opposite to the second light source unit reflects the illumination beams emitted from a substantially half region on the other side in the aperture plane of the parabolic reflector of the second light source unit, towards the direction along the first optical axis.read more
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References
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Patent
Illuminator and projector
TL;DR: In this paper, an illuminator capable of suppressing speckle noise, having high efficiency of using light and achieving the reduction of a cost, and a projector is proposed. But, it is not shown how to use the projector for illumination.
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Illumination apparatus and image projection apparatus using the illumination apparatus
TL;DR: In this article, a columnar light leading member, having an incident end surface, an outgoing radiation end surface and a reflection surface, is configured to reflect on the reflection surface.
Patent
Video projector illumination system using two lamps having complementary beams patterns
TL;DR: An apparatus for providing uniform high efficiency illumination in a projection display system comprising two lamp sources each having a different geometric aligning means by combining a first light source having an annular cross-sectioned beam and a second light source with a circular cross-sectional beam sized to be identical to the annulus, a light beam is created that provides more light and greater beam uniformity than has heretofore been available using low cost components as discussed by the authors.
Patent
Illuminating apparatus and projector
Koichi Akiyama,光一 秋山 +1 more
TL;DR: In this article, a polarized light beam splitter was used to synthesize the illuminating light flux having the first polarized light component emitted from the first polarizing light source device and the second polarising light component emitting from the second polarized light source to emit.
Patent
Polarized light separating/combining optical element, polarized light illuminating apparatus and projection-type display device
TL;DR: In this article, a polarization illuminating device capable of utilizing both polarization components is provided without entailing an increase in the area of the light source image although a plurality of light sources are used.