摘要:
A light source device for a liquid crystal projector in which it is possible to prevent distinct appearance of a shadow of the conducting wiring of a lamp on a screen, even if an integrator lens is used, is achieved according to the invention by the fact that, in a light source device which has a metal halide lamp with bilateral sealed terminations in which seal areas are joined in one piece to two ends of an arc tube, and a concave reflector, in which one of the seal areas of the lamp is installed and held in a base opening of the concave reflector, and in which the other seal area extends in toward the front opening of the concave reflector, by conducting wiring connected to the outer lead pin which projects from the seal area toward the front opening of the concave reflector being positioned running toward the arc tube in a manner resting directly on this seal area, and then being drawn out in the vicinity of the arc tube with to behind the concave reflector.
摘要:
In an EUV focusing mirror in which there are several thin concave nested high precision mirrors in the form of an ellipsoid of revolution, a paraboloid of revolution, a Wolter type or the like, the sides which do not constitute the reflection surfaces are made in the shape of a knife edge at the radiation incident ends of the respective mirrors in order not to be shielded by the thickness of the radiation incidence sides of the respective mirrors. Likewise, the radiation exit ends of the respective mirrors are made in the form of a knife edge. This yields an advantageous far-field distribution use of the mirrors for an EUV radiation source device and the degree of reduction of the light intensity can be made smaller than in the conventional case.
摘要:
A light source device including a short arc discharge lamp having a pair of opposed electrodes within a light emitting bulb of a discharge container, and a concave reflector having an optical axis arranged to coincide with a direction of an arc produced by the electrodes when the discharge lamp is activated. The electrodes are spaced from each other at a distance of 4.0 mm or less and the light emitting bulb has an inner surface and an outer surface which, at least in a specific portion, have substantially spherical surfaces with a center of curvature which is at a center of the arc. The specific portion is located in front of a critical line that passes through the light emitting bulb, the specific portion being an angle having an apex at the center of the arc. The concave reflector has an optical axis that is at least 3 sr in front of a plane which passes through the center of the arc and perpendicular to the optical axis of the concave reflector.
摘要:
An exposure device for producing semiconductors and liquid crystals has an optical system capable of effectively using light generated without making a hole in a lamp discharge vessel when high energy laser light is supplied to it for emitting light, such as ultraviolet light. The exposure device has a light source for emitting ultraviolet light, a laser device for emitting laser light, an elliptical reflector for reflecting ultraviolet light emitted from the light source, and an optical system for directing light reflected by the elliptical reflector to an article to be treated via optical elements including a collimator lens and an integrator lens, and a beam splitter having a wavelength selecting ability provided in the optical path for light reflected by the elliptical reflector to allow laser light to be incident on the light source from and opening side of the elliptical reflector.
摘要:
An optical device and a multisurface reflector which can be used for this purpose, which has high uniformity of the illumination intensity on the entire surface of an area to be illuminated, and a small shape, and in which a high utilization factor of the light can be obtained is achieved according to the invention by there being a multisurface concave reflector which is composed of numerous mirror elements which combine to form a concave reflection surface of a generally oval shape. A light source lamp is arranged such that an emission part of it is positioned along the center axis of the multisurface reflector, and a lens plate is located in front of the multisurface reflector on a plane perpendicular to its center axis. The lens plate a plurality of lens elements which each correspond number to the number of mirror elements on the reflector. Furthermore, according to the invention, each mirror element of the multisurface reflector has a first focal point positioned in the emission part of the light source lamp, and another focal point is positioned in a corresponding lens element of the lens plate. The light from the emission part of the light source lamp is divided by each mirror element, and this divided light is superimposed by the respective lens element in an area to be illuminated.
摘要:
In a light source device, in each division of an image frame, two or more of the color lights X, Y and Z (e.g., red, green and blue) can be projected simultaneously. Each of the color lights X, Y and Z is divided into two in terms of time so that synthesized light of one group of division color lights enters a first spatial modulation element. Synthesized light of another group of division color lights enters a second spatial modulation element, whereby gradation of each color light in each of the first and second spatial modulation elements is controlled.
摘要:
In a light source device, that obtains high light usage efficiency by projecting simultaneously two or more of three primary color lights X, Y and Z. Moreover, each color light X, Y and Z is divided into two in terms of time so that p-wave and s-wave linear polarization lights are formed, such that the synthesized light of the p-wave linear polarization lights enters a first spatial modulation element and the synthesized light of the s-wave linear polarization lights enters a second spatial modulation element to permit gradation control of each color light.
摘要:
In a light source device, in each division of an image frame, two or more of the color lights X, Y and Z (e.g., red, green and blue) can be projected simultaneously. Each of the color lights X, Y and Z is divided into two in terms of time so that synthesized light of one group of division color lights enters a first spatial modulation element. Synthesized light of another group of division color lights enters a second spatial modulation element, whereby gradation of each color light in each of the first and second spatial modulation elements is controlled.