Patent
Projection display apparatus
TLDR
A projection display apparatus for expanding and projecting an image, which is formed by an optical modulator, using a projection lens is described in this paper, where a diaphragm mechanism is disposed between the light source and the optical modulators, and controls an amount of light from the source.Abstract:
A projection display apparatus for expanding and projecting an image, which is formed by an optical modulator, using a projection lens A light source illuminates the optical modulator A first lens array divides light emitted from the light source into a plurality of partial luminous fluxes A second lens array superimposes the plurality of partial luminous fluxes emitted from the first lens array onto the optical modulator A diaphragm mechanism is disposed between the light source and the optical modulator, and controls an amount of light from the light source A traveling direction of the light emitted from the light source is defined as a Z-axis, a direction perpendicular to the Z-axis is defined as an X-axis, and a direction perpendicular to a plane formed by the Z-axis and the X-axis is defined as a Y-axis An area of an opening of the diaphragm mechanism changes in a direction of the X-axis or the Y-axisread more
Citations
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Patent
Light source device and projector
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Lighting apparatus and projection type display, and driving method therefor
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References
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Patent
Projection exposure apparatus
TL;DR: In this article, a projection exposure apparatus for use in LSI production comprises a light source, a light condensing optical system through which light from the light source is condensed and applied to a mask carrying a circuit pattern, a projection lens system which projects the light transmitted through the mask onto the surface of a wafer, and an aperture member which is interposed between the light and the light condense optical system.
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Illumination optical system and projection type display device using the same
TL;DR: In this article, an illumination optical system has a first light shielding plate 51 which is disposed between a first fly-eye 3B on a liquid crystal panel side and a PBS plate (composed of a comb-shaped polarized light separating prism array and a half-wave plate) 13, a second light shield plate 52 which is made movable in an arrow B direction (a direction orthogonal with the optical axis).