Abstract: A positive displacement machine includes a housing including a guide part, a slide member including a piston disposed in the guide part, a coupling member coupled to the slide member, a first rotating member coupled to the coupling member and configured to rotate centering on a first rotation axis, a second rotating member coupled to the coupling member and configured to rotate, centering on a second rotation axis, in an opposite direction of a rotating direction of the first rotating member, and a first motor including a first rotor coupled to the first rotating member and a first stator disposed on an outer side of the first rotor, The first motor includes a first adjusting mechanism configured to adjust an angle of the first stator with respect to the first rotor, the angle being centered on the first rotation axis.

Abstract: A positive displacement machine includes a housing including a tubular guide part in which a pressure chamber is provided, a slide member including a piston disposed in the guide part, the slide member sliding in a first direction, a coupling member coupled to the slide member and extending in a second direction intersecting the first direction, a first rotating member coupled to a first end portion of the coupling member and configured to rotate centering on a first rotation axis extending in the second direction, and a first motor. The first motor includes a first rotor coupled to the first rotating member and configured to rotate centering on the first rotation axis and an adjuster configured to adjust a position of the first rotor with respect to the housing, the position extending along an imaginary plane perpendicular to the first rotation axis.

Abstract: A positive displacement machine includes a case including a tubular guide part in which a pressure chamber is provided, a slide member including a shaft extending in a first direction and a piston provided at an end portion of the shaft and disposed in the guide part, a coupling member coupled to the slide member and extending in a second direction intersecting the first direction, a first rotating member coupled to one end of the coupling member and configured to rotate around a first rotation axis extending in the second direction, and a rocking absorbing mechanism configured to absorb a rocking motion of the piston around an axis extending in the first direction. The rocking absorbing mechanism is provided between the coupling member and the slide member, between the shaft and the piston, or between the piston and an inner wall of the guide part.

Abstract: A projector includes: a light source; a polarization conversion unit that converts the light flux from the light source into polarized light having a plane of polarization parallel to a first direction; a color separation/light guiding system including a separating surface and at least one optical-path deflecting mirror; and a plurality of light modulators, wherein the separating surface is disposed in such a way that the plane of incidence of the polarized light with respect to the separating surface is perpendicular to the first direction, and the at least one optical-path deflecting mirror is disposed in such a way that the plane of incidence of the corresponding polarized light flux from the separating surface with respect to the optical-path deflecting mirror is parallel to the first direction.

Abstract: A projector includes: a light source; a polarization conversion unit that converts the light flux from the light source into polarized light having a plane of polarization parallel to a first direction; a color separation/light guiding system including a separating surface and at least one optical-path deflecting mirror; and a plurality of light modulators, wherein the separating surface is disposed in such a way that the plane of incidence of the polarized light with respect to the separating surface is perpendicular to the first direction, and the at least one optical-path deflecting mirror is disposed in such a way that the plane of incidence of the corresponding polarized light flux from the separating surface with respect to the optical-path deflecting mirror is parallel to the first direction.

Abstract: Aspects of the invention can provide a projector that includes three optical modulators which modulate respectively red light, green light, and blue light, a color-synthetic optical system which synthesizes the light modulated by the three optical modulators, and a projection optical system which projects the light synthesized by the color-synthetic optical system. The color-synthetic optical system can include a first reflection film that reflects the green light, and a second reflection film that reflects the blue light, the first reflection film and the second reflection film are arranged in the shape of an X character, and a wavelength in which a reflectance factor of the first reflection film comes to 50% can be longer than a wavelength in which a reflectance factor of the second reflection film comes to 50%.

Abstract: A projector includes an illumination device, a color separation system, a light combining system, a projection system, and an optical adjustment portion. The color separation system separates the light emitted from the illumination device into blue light, red light, and green light. The light combining system can have a first dichroic filter reflecting one of blue light or red light, and a second dichroic filter reflecting green light which are placed in a crossed state and can combine image lights of respective colors exiting from the first through third light modulation devices. The projection system can project a combined light exiting from the light combining system while correcting chromatic aberrations of magnification of blue light and red light with respect to green light. The optical adjustment portion can adjust a size of an image light corresponding to the green light of the combined light exiting from the light combining system.

Abstract: Exemplary embodiments of the invention provide a projector that can readily correct for chromatic aberration caused by, for example, a projecting lens without having to give a cross dichroic prism, for example, a special preliminary process. Illumination-light components modulated by corresponding liquid-crystal light valves are synthesized in a cross dichroic prism (27) to form image light. The image light enters a projecting lens (29) from which the image light is projected onto a screen, which is not shown in the drawings. In the cross dichroic prism (27) used to synthesize light components, a first prism element (P1) has a refractive index higher than that of remaining prism elements (P2, P3 and P4). This allows a width of a red projection-image component to be made larger than widths of projection-image components of remaining colors, whereby the chromatic aberration in the projecting lens can be readily corrected.

Abstract: Exemplary embodiments of the present invention provide a lighting unit including a lamp device adjusted by a general-purpose measuring device at high working efficiency, and yet allowing efficient utilization of light from a light source. In a light source device, since a first fly's eye has a concave entrance surface having a predetermined curvature, luminous flux entering the first fly's eye optical system and passing through the entrance surface is collimated to be parallel with an optical axis. Accordingly, illumination lights entering respective liquid crystal light valves are precisely superposed while allowing the angles of incidence of respective partial luminous fluxes entering the respective liquid crystal light valves to fall within a predetermined angle range, thereby enhancing utilization efficiency of the illumination lights.

Abstract: Aspects of the invention can provide a projector can include an illumination device that outputs illumination light, a color separation system that divides the illumination light output from the illumination device into blue light, red light, and green light and guides the blue light, red light, and green light to first to third optical paths, respectively, and first to third light modulation devices disposed in the first to third optical paths to be illuminated by the blue light, red light, and green light. In the projector, a distance from the illumination device to the third optical modulation device can be longer than a distance from the illumination device to the first optical modulation device and a distance from the illumination device to the second optical modulation device, a relay system having a first lens disposed at the light incident side, a second lens disposed at the light exit side, and a third lens disposed between the first and second lenses can be provided in the third optical path.

Abstract: The present invention is a projector provided with a light source, a color separating optical system for separating the light from the light source into three colored light beams of red, green and blue, a liquid crystal panel for the red color for modulating the red colored light beam, a liquid crystal panel for the green color for modulating the green colored light beam, a liquid crystal panel for the blue color for modulating the blue colored light beam, and a projection lens which projects the light that was modulated by the three liquid crystal panels, wherein only the liquid crystal panel for the red color is provided with a micro lens from among the three liquid crystal panels. In this configuration, the color balance of the color image is improved and the color reproducibility (color matching) as a whole is improved, and the projector of the present invention is suitable for use as a projector for projecting a color image onto a projection surface such as a screen.

Abstract: A rear projection type projector is provided. An optic axis of modulated light to be projected to a screen projection surface is slanted to a normal N-N of the screen projection surface and projected to a trapezoidal range ABCD housing the actual projection range EFGH. A reflector is disposed in the rear of the screen projection surface, a projection unit projecting modulated light is placed on a side of the screen projection surface, and the modulated light is projected towards the rear, and then reflected at the reflector. Further, image information is corrected and a distortion-free image is projected.

Abstract: Exemplary embodiments of the invention provide a projector that can readily correct for chromatic aberration caused by, for example, a projecting lens without having to give a cross dichroic prism, for example, a special preliminary process. Illumination-light components modulated by corresponding liquid-crystal light valves are synthesized in a cross dichroic prism 27 to form image light. The image light enters a projecting lens 29 from which the image light is projected onto a screen, which is not shown in the drawings. In the cross dichroic prism 27 used to synthesize light components, a first prism element P1 has a refractive index higher than that of remaining prism elements P2, P3, P4. This allows a width of a red projection-image component to be made larger than widths of projection-image components of remaining colors, whereby the chromatic aberration in the projecting lens can be readily corrected.

Abstract: Aspects of the invention can provide a projector that includes three optical modulators which modulate respectively red light, green light, and blue light, a color-synthetic optical system which synthesizes the light modulated by the three optical modulators, and a projection optical system which projects the light synthesized by the color-synthetic optical system. The color-synthetic optical system can include a first reflection film that reflects the green light, and a second reflection film that reflects the blue light, the first reflection film and the second reflection film are arranged in the shape of an X character, and a wavelength in which a reflectance factor of the first reflection film comes to 50% can be longer than a wavelength in which a reflectance factor of the second reflection film comes to 50%.

Abstract: Aspects of the invention can provide a projector that can include an illumination device that emits an illumination light, a color separation system that separates the illumination light emitted from the illumination device into a blue light, a red light, and a green light, and guides the blue light and the red light, respectively, to first and second optical paths, and the green light to a third optical path in which a relay system is provided, first through third light modulation devices that are provided, respectively, in the first through third optical paths, and illuminated by the blue light, the red light, and the green light, respectively, a light combining system that can have a first dichroic filter reflecting one of the blue light and the red light, and a second dichroic filter reflecting the green light which are placed in a crossed state, and that can combine image lights of respective colors exiting from the first through third light modulation devices to go incident on the first and second dichr

Abstract: Aspects of the invention can provide a projector can include an illumination device that outputs illumination light, a color separation system that divides the illumination light output from the illumination device into blue light, red light, and green light and guides the blue light, red light, and green light to first to third optical paths, respectively, and first to third light modulation devices disposed in the first to third optical paths to be illuminated by the blue light, red light, and green light. In the projector, a distance from the illumination device to the third optical modulation device can be longer than a distance from the illumination device to the first optical modulation device and a distance from the illumination device to the second optical modulation device, a relay system having a first lens disposed at the light incident side, a second lens disposed at the light exit side, and a third lens disposed between the first and second lenses can be provided in the third optical path.

Abstract: Exemplary embodiments of the present invention provide a lighting unit including a lamp device adjusted by a general-purpose measuring device at high working efficiency, and yet allowing efficient utilization of light from a light source. In a light source device, since a first fly's eye has a concave entrance surface having a predetermined curvature, luminous flux entering the first fly's eye optical system and passing through the entrance surface is collimated to be parallel with an optical axis. Accordingly, illumination lights entering respective liquid crystal light valves are precisely superposed while allowing the angles of incidence of respective partial luminous fluxes entering the respective liquid crystal light valves to fall within a predetermined angle range, thereby enhancing utilization efficiency of the illumination lights.

Abstract: A rear projection type projector is provided. An optic axis of modulated light to be projected to a screen projection surface is slanted to a normal N-N of the screen projection surface and projected to a trapezoidal range ABCD housing the actual projection range EFGH. A reflector is disposed in the rear of the screen projection surface, a projection unit projecting modulated light is placed on a side of the screen projection surface, and the modulated light is projected towards the rear, and then reflected at the reflector. Further, image information is corrected and a distortion-free image is projected.

Abstract: The present invention is a projector provided with a light source, a color separating optical system for separating the light from the light source into three colored light beams of red, green and blue, a liquid crystal panel for the red color for modulating the red colored light beam, a liquid crystal panel for the green color for modulating the green colored light beam, a liquid crystal panel for the blue color for modulating the blue colored light beam, and a projection lens which projects the light that was modulated by the three liquid crystal panels, wherein only the liquid crystal panel for the red color is provided with a micro lens from among the three liquid crystal panels. In this configuration, the color balance of the color image is improved and the color reproducibility (color matching) as a whole is improved, and the projector of the present invention is suitable for use as a projector for projecting a color image onto a projection surface such as a screen.

Abstract: A projector includes an illumination system for emitting illumination light, an electro-optical device for modulating light from the illumination system according to image information, and a projection'system for projecting a modulated light beam obtained by the electro-optical device. The electro-optical device has a polarizer on at least one of the light incident side and the light emitting side, and the polarizer is attached to a flexible and transmissive plate material that bends in response to changes in shape of the polarizer. This makes it possible to reduce unevenness in brightness and color of images to be projected and displayed.