Abstract: A projection type display apparatus includes a container configured to house a light source unit, a light modulation element, and an optical system configured to illuminate the light modulation element with light from the light source unit, a housing configured to house the container, and a reinforcement member configured to extend from an outer surface of the container to an inner surface of the housing and to contact the outer surface of the container and the inner surface of the housing. A side of the reinforcement member contacting the inner surface of the housing is fixed onto a side surface of the housing.

Abstract: An image display apparatus includes a color combining prism configured to combine a plurality of image light components from a plurality of image display elements, a plurality of polarization separating elements disposed on light paths of the plurality of image light components, a plurality of light transmitting members fixed to a plurality of entrance surfaces through which the plurality of image light components enters the color combining prism, and a supporting member configured to support a pair of a light transmitting member and a polarization separating element corresponding to each other out of the plurality of light transmitting members and the plurality of polarization separating elements, wherein the supporting member is disposed on a side surface of the light transmitting member.

Abstract: A projection type display apparatus includes a container configured to house a light source unit, a light modulation element, and an optical system configured to illuminate the light modulation element with light from the light source unit, a housing configured to house the container, and a reinforcement member configured to extend from an outer surface of the container to an inner surface of the housing and to contact the outer surface of the container and the inner surface of the housing. A side of the reinforcement member contacting the inner surface of the housing is fixed onto a side surface of the housing.

Abstract: The displaying apparatus unit according to the present invention includes a first holder configured to hold a displaying element, a second holder configured to hold an optical operating plate which operates on light from the displaying element, a first dustproof cover member disposed between the first holder and the second holder, and configured to cover a whole side surface of the displaying element, and a second dustproof cover member disposed between the first dustproof cover member and the second holder, wherein the first dustproof cover member is in contact with the first holder, the second dustproof cover member is in contact with the second holder, the first dustproof cover member and the second dustproof cover member are in contact with each other, and the first dustproof cover member has a hardness higher than that of the second dustproof cover member.

Abstract: An image projector includes a first deflector configured to deflect a first optical path and to form a second optical path, a second deflector configured to deflect the second optical path and to form a third optical path, a shifter configured to shift a projection lens in a vertical direction which corresponds to a longitudinal direction of the projected surface among directions orthogonal to an optical axis of the projection lens, a housing configured to house the first deflector and the second deflector, and a fixed plate fixed onto the housing at an end on an installing surface side of the housing, the projection lens and the shifter being fixed onto the fixed plate, wherein the third optical path is closer to an installing surface of the housing than the first optical path.

Abstract: An image projector includes a first deflector configured to deflect a first optical path and to form a second optical path, a second deflector configured to deflect the second optical path and to form a third optical path, a shifter configured to shift a projection lens in a vertical direction which corresponds to a longitudinal direction of the projected surface among directions orthogonal to an optical axis of the projection lens, a housing configured to house the first deflector and the second deflector, and a fixed plate fixed onto the housing at an end on an installing surface side of the housing, the projection lens and the shifter being fixed onto the fixed plate, wherein the third optical path is closer to an installing surface of the housing than the first optical path.

Abstract: The displaying apparatus unit according to the present invention includes a first holder configured to hold a displaying element, a second holder configured to hold an optical operating plate which operates on light from the displaying element, a first dustproof cover member disposed between the first holder and the second holder, and configured to cover a whole side surface of the displaying element, and a second dustproof cover member disposed between the first dustproof cover member and the second holder, wherein the first dustproof cover member is in contact with the first holder, the second dustproof cover member is in contact with the second holder, the first dustproof cover member and the second dustproof cover member are in contact with each other, and the first dustproof cover member has a hardness higher than that of the second dustproof cover member.

Abstract: An image projector includes a first deflector configured to deflect a first optical path and to form a second optical path, a second deflector configured to deflect the second optical path and to form a third optical path, a shifter configured to shift a projection lens in a vertical direction which corresponds to a longitudinal direction of the projected surface among directions orthogonal to an optical axis of the projection lens, a housing configured to house the first deflector and the second deflector, and a fixed plate fixed onto the housing at an end on an installing surface side of the housing, the projection lens and the shifter being fixed onto the fixed plate, wherein the third optical path is closer to an installing surface of the housing than the first optical path.

Abstract: The image projection apparatus includes light modulation elements, a color separation/combination optical system (?) configured to, in a specific cross section, separate light source light into plural color lights, introduce the color lights to the corresponding light modulation elements, combine the modulated color lights and introduce the combined color lights to a projection optical system, a holding member holding the color separation/combination optical system, an electrical circuit substrate attached to the holding member parallel to the specific cross section and electrically connected to the light modulation elements, and an optical element insertable into and extractable from the color separation/combination optical system. The holding member has a configuration allowing, in a direction orthogonal to the specific cross section on an opposite side to an electrical circuit substrate side, the insertion/extraction of the optical element into and from the color separation/combination optical system.

Abstract: A prism unit includes a prism having at least one optical surface in its inside, and a prism base disposing the prism, the prism base including at least three seating surfaces that are attached to a surface orthogonal to the optical surface of the prism, a seating surface bonded part that is bonded to the prism by an adhesive. At least the three seating surfaces and the seating surface bonded part are symmetrically arranged on the optical surface of the prism.

Abstract: A prism unit includes a prism having at least one optical surface in its inside, and a prism base disposing the prism, the prism base including at least three seating surfaces that are attached to a surface orthogonal to the optical surface of the prism, a seating surface bonded part that is bonded to the prism by an adhesive. At least the three seating surfaces and the seating surface bonded part are symmetrically arranged on the optical surface of the prism.

Abstract: The image projection apparatus includes light modulation elements, a color separation/combination optical system (?) configured to, in a specific cross section, separate light source light into plural color lights, introduce the color lights to the corresponding light modulation elements, combine the modulated color lights and introduce the combined color lights to a projection optical system, a holding member holding the color separation/combination optical system, an electrical circuit substrate attached to the holding member parallel to the specific cross section and electrically connected to the light modulation elements, and an optical element insertable into and extractable from the color separation/combination optical system. The holding member has a configuration allowing, in a direction orthogonal to the specific cross section on an opposite side to an electrical circuit substrate side, the insertion/extraction of the optical element into and from the color separation/combination optical system.

Abstract: A prism unit includes a prism having at least one optical surface in its inside, and a prism base disposing the prism, the prism base including at least three seating surfaces that are attached to a surface orthogonal to the optical surface of the prism, a seating surface bonded part that is bonded to the prism by an adhesive. At least the three seating surfaces and the seating surface bonded part are symmetrically arranged on the optical surface of the prism.

Abstract: An image projector includes a first deflector configured to deflect a first optical path and to form a second optical path, a second deflector configured to deflect the second optical path and to form a third optical path, a shifter configured to shift a projection lens in a vertical direction which corresponds to a longitudinal direction of the projected surface among directions orthogonal to an optical axis of the projection lens, a housing configured to house the first deflector and the second deflector, and a fixed plate fixed onto the housing at an end on an installing surface side of the housing, the projection lens and the shifter being fixed onto the fixed plate, wherein the third optical path is closer to an installing surface of the housing than the first optical path.

Abstract: An LED display apparatus 1 in which at least multiple LEDs are serially-connected to a power circuit part having a constant current power source, each one of the LEDs has a switching element parallel-connected thereto, and a control circuit part is used to selectively turn on/off the switching elements to control the LEDs for a specific display, characterized by the fact that the apparatus comprises a display matrix circuit part 9 constituted by parallel-connecting to the power circuit part 8 multiple LED circuits 7a, 7b, 7c . . . consisting of multiple LEDs 2 . . . and a single first switching element 3a, 3b, 3c . . . serially-connected and second switching element 4 . . . each parallel-connected to one of the LEDs 2 . . . , and a control circuit part 10 turning on the first switching elements 3a . . . for a given time period (Ts) in sequence and turning on/off a row La, Lb, Lc . . . of multiple second switching elements 4 . . . extending across the LED circuits 7a . . .

Abstract: An optical modulation element unit is disclosed which employs a film-type optical function member and a reflective optical modulation element and allows dust prevention for the reflective optical modulation element while preventing an increased number of parts other than optically required parts. The optical modulation element unit includes a light-transmissive substrate, a film-type optical function member attached to the light-transmissive substrate, a reflective optical modulation element separately placed from the light-transmissive substrate, a cover member which surrounds a space between the light-transmissive substrate and the reflective optical modulation element, and a holding member which holds the light-transmissive substrate. The holding member has a guide portion which guides an air flow to a space along a surface of the light-transmissive substrate, the surface being a surface on the side opposite to the reflective optical modulation element.

Abstract: The image projection apparatus includes a light modulating element, a projection lens configured to project light modulated by the light modulating element onto a projection surface, an optical unit configured to introduce light from a light source to the light modulating element, and to introduce the light from the light modulating element to the projection lens, a shutter unit disposed between the optical unit and the projection lens, and configured to be capable of shutting to block the light from the optical unit from entering the projection lens. A controller is configured to set an operation state of the light modulating element such that, in a state where the shutter unit is shut, an intensity of the light reaching the shutter unit from the optical unit becomes smaller than that in an entire white display state.

Abstract: An optical modulation element unit is disclosed which employs a film-type optical function member and a reflective optical modulation element and allows dust prevention for the reflective optical modulation element while preventing an increased number of parts other than optically required parts. The optical modulation element unit includes a light-transmissive substrate, a film-type optical function member attached to the light-transmissive substrate, a reflective optical modulation element separately placed from the light-transmissive substrate, a cover member which surrounds a space between the light-transmissive substrate and the reflective optical modulation element, and a holding member which holds the light-transmissive substrate. The holding member has a guide portion which guides an air flow to a space along a surface of the light-transmissive substrate, the surface being a surface on the side opposite to the reflective optical modulation element.

Abstract: An optical modulation element unit is disclosed which employs a film-type optical function member and a reflective optical modulation element and allows dust prevention for the reflective optical modulation element while preventing an increased number of parts other than optically required parts. The optical modulation element unit includes a light-transmissive substrate, a film-type optical function member attached to the light-transmissive substrate, a reflective optical modulation element separately placed from the light-transmissive substrate, a cover member which surrounds a space between the light-transmissive substrate and the reflective optical modulation element, and a holding member which holds the light-transmissive substrate. The holding member has a guide portion which guides an air flow to a space along a surface of the light-transmissive substrate, the surface being a surface on the side opposite to the reflective optical modulation element.