Abstract: In an optical unit of a projective display device which projects light source light reflected by a DMD, one prism of TIR prisms has a first boundary surface which is arranged in parallel to an emission surface of the light source light of other prism at a predetermined distance and on which the light source light from other prism is incident and a second boundary surface which is provided to face the DMD and emits the light source light illuminating the DMD and on which reflected light from the DMD is incident. When a swinging angle of minute mirrors of the DMD is set as ±?, a refractive index of the prisms is set as n, an angle formed by the first boundary surface and the second boundary surface is set as ?, and an emission angle of the light source light with respect to the DMD in the second boundary surface is set as ?, the swinging angle ?, the refractive index n, the angle ?, and the angle ? satisfy a predetermined relation.

Abstract: In an optical unit of a projective display device which projects light source light reflected by a DMD, one prism of TIR prisms has a first boundary surface which is arranged in parallel to an emission surface of the light source light of other prism at a predetermined distance and on which the light source light from other prism is incident and a second boundary surface which is provided to face the DMD and emits the light source light illuminating the DMD and on which reflected light from the DMD is incident. When a swinging angle of minute mirrors of the DMD is set as ±?, a refractive index of the prisms is set as n, an angle formed by the first boundary surface and the second boundary surface is set as ?, and an emission angle of the light source light with respect to the DMD in the second boundary surface is set as ?, the swinging angle ?, the refractive index n, the angle ?, and the angle ? satisfy a predetermined relation.

Abstract: The projection display system has a light source unit where a first light source and a second light source respectively emitting a first and second wavelength or wavelength range of light are juxtapositionally arranged; a third light source emitting a third wavelength or wavelength range of light; an optical combiner device for combining the three wavelengths or wavelength ranges of light from the light sources; an optical device for averaging distributions of the wavelengths or wavelength ranges of light; an image display device for receiving the light transmitted through the optical device and forming image light responsive to a video signal; and a projector lens for projecting the image light onto a screen. At least two of the optical axes of the first, second, and third wavelengths or wavelength ranges of light which are incident on the optical device are not coincident with each other.

Abstract: A door glass run for automobile provided with a recessed groove for sliding a door glass thereon, installed on a door panel, which comprises an insert positioned on an inner periphery side of the recessed groove and consisting of a hard synthetic resin formed along a profile of the door panel, and a body consisting of elastomer position on an outer periphery side of the insert. A glass slide positioned on a bottom portion of the recessed groove and a glass retainer positioned on a side portion of a car outside of the door glass in the recessed groove are formed on the insert. Further, a locking leg projecting to pass through the body from a predetermined position on an outer periphery side of the glass slide and mountable in a fitting hole of the door panel is formed on the insert.