Abstract: The projection image display apparatus of the disclosure includes a light source, a projection optical system that projects light entering an incident port, an optical modulator element, and wavelength selection filter. The optical modulator element includes multiple mirrors on its base. These mirrors are driven to switch, based on an image signal, between the ON state for reflecting a light entering from a light source toward the incident port of the projection optical system and the OFF state for reflecting a light entering from the light source in a direction other than the incident port of the projection optical system. In light entering from the light source to irradiate the optical modulator element, the wavelength selection filter reflects a light wavelength component that will be planar reflection light after being reflected on the base and entering the incident port of the projection lens.

Abstract: The projection image display apparatus of the disclosure includes a light source, a projection optical system that projects light entering an incident port, an optical modulator element, and wavelength selection filter. The optical modulator element includes multiple mirrors on its base. These mirrors are driven to switch, based on an image signal, between the ON state for reflecting a light entering from a light source toward the incident port of the projection optical system and the OFF state for reflecting a light entering from the light source in a direction other than the incident port of the projection optical system. In light entering from the light source to irradiate the optical modulator element, the wavelength selection filter reflects a light wavelength component that will be planar reflection light after being reflected on the base and entering the incident port of the projection lens.

Abstract: A projection enabling replacement of its lamp with minimum components. The light source lamp section includes a high-pressure discharge lamp and a metal reflector to which the high-pressure discharge lamp is attached. A plurality of engaging portions are provided on an opening rim of the metal reflector, while engaged portions are provided in a lamp housing section of the body of the projection display. The engaged portions are engaged with the engaging portions. By engaging the plurality of engaging portions of the opening rim with the engaged portions of the lamp housing section, the light source lamp section is secured to the lamp housing section of the body.

Abstract: Modulated light (image light) which has been modulated by passing through a liquid crystal display panel passes through an apical angle variable prism (so-called, a vari-angle prism) and then is enlarged and projected by a projection lens. The apical angle variable prism is configured to change the prism apical angle with, for example, an electromagnetic actuator. The microcomputer calculates a projection optical axis correction value based on hand shake detection signals from a sensor and controls the aforementioned actuator based on the correction value. With this control, shakes of projected images due to hand shakes are prevented.

Abstract: A projection display capable of preventing a reflector from damage and cooling a lamp at high efficiency. The projection display includes a light source which has a lamp and metallic reflector. The metallic reflector has an opening disposed above the light-emitting point of the lamp in the gravity direction. A duct has an end coupled to the opening and directs the air induced by a fan through the opening into the metallic reflector. The air then circulates within the metallic reflector to cool the light-emitting point of the lamp, and subsequently is released out of the metallic reflector through through-holes formed with a front glass and a flange of the metallic reflector.

Abstract: A lens array wheel 4 receives light irradiated in a direction parallel to its rotation axis, to cyclically deflect the light. On each of liquid crystal display panels 7R, 7G, and 7B, the light is circularly scrolled, the effect of substantial intermittent illumination is produced, and hold blurring is reduced. A panel driver 15 starts to feed a pixel-driving signal in the succeeding frame to a pixel existing at a position, through which an illuminating area passes, on each of the liquid crystal display panels 7R, 7G, and 7B.

Abstract: A projection type video display is provided with three LED light sources. A first LED light source emits a light in red, a second LED light source emits a light in green, and a third LED light source emits a light in blue. Lights in respective colors emitted from each LED light source are guided into a light incidence surface of a rod integrator by a cross dichroic mirror. The cross dichroic mirror is formed of a first cross dichroic mirror portion and a second dichroic mirror portion. The first cross dichroic mirror portion is divided into two portions, and the second cross dichroic mirror portion, too, is divided into two portions. The cross dichroic mirror has structure of a cross arrangement in which these four divided portions bring respective corner sides into close contact.

Abstract: This invention provides a projection enabling replacement of its lamp with minimum components. The light source lamp section includes a high-pressure discharge lamp and a metal reflector to which the high-pressure discharge lamp is attached. A plurality of engaging portions are provided on an opening rim of the metal reflector, while engaged portions are provided in a lamp housing section of the body of the projection display. The engaged portions are engaged with the engaging portions. By engaging the plurality of engaging portions of the opening rim with the engaged portions of the lamp housing section, the light source lamp section is secured to the lamp housing section of the body.

Abstract: A projection type video display is provided with three LED light sources. Lights emitted from each LED light source are guided into a light incidence surface of a rod integrator by a cross dichroic mirror. In a first light incidence area (an area opposite to a LED light source in red) of the cross dichroic mirror, a first dichroic mirror is provided, and in a second light incidence area (an area opposite to a LED light source in blue) of the cross dichroic mirror, a second dichroic mirror is provided. The first dichroic mirror transmits the light in red and reflects lights in other colors, and the second dichroic mirror transmits the light in blue and reflects lights in other colors.

Abstract: This invention provides a projection display capable of preventing a reflector from damage and cooling a lamp at high efficiency. The projection display comprises a light source. The light source includes a lamp and metallic reflector. The metallic reflector has an opening disposed above the light-emitting point of the lamp in the gravity direction. The duct has an end coupled to the opening and directs the air induced by a fan through the opening into the metallic reflector. The air induced into the metallic reflector then circulates within the metallic reflector to cool the light-emitting point of the lamp, and subsequently is released out the metallic reflector through through-holes formed with a front glass and a flange of the metallic reflector.

Abstract: An illuminating device (1) is formed of a light source (12) in which LED chips (11) are arranged in an array shape and lens cells (14) are arranged on a light-emission side of each of the LED chips (11), and a pair of fly's eye lenses (13) that integrates and guides to a liquid crystal panel (3) the light emitted from each of the LED chips (11) and collimated by the lens cells (14). The LED chip (11) and the lens cell (14) are formed in a square shape, and an aspect ratio thereof corresponds to that of the liquid crystal display panel (3). In addition, the lens cells (14) are arranged separately from one another in such a manner to have wall surfaces (air gaps), and the wall surfaces serve as reflective surfaces.

Abstract: An illuminating device comprises a first light source in which LED chips are arranged in an array shape and a second light source in which LED chips are arranged in an array shape. The two light sources of each illuminating device are arranged such that the main light-emission optical axes of the light sources are perpendicular to each other. Moreover, a time-division switching mirror is provided at a crossing position between the main light-emission optical axes. The first light source and the second light source alternately emit pulses of light. The pulsed emission is a method of supplying a large amount of electric currents to the LED chips in a short time period, and a light-emitting amount increases compared to a steady-state emission of the LED chips. The time-division switching mirror becomes a transmitting state when the first light source is lighted, and becomes a reflecting state when the second light source is lighted.

Abstract: An object of the present invention is to provide a photoreaction apparatus which can inexpensively and quickly prepare a micropattern. The photoreaction apparatus comprises an LCD projector which irradiates an LCD panel for displaying an input image with light to thereby project the image; a sample laying stage on which a photoreactive sample is laid; a reducing projection lens which reduces the projected light from the LCD projector to form an image on the sample; and a zoom adjustment mechanism for adjusting a projective magnification of the image to be formed on the sample. The zoom adjustment mechanism comprises a first adjustment section for adjusting a distance between the LCD panel and the reducing projection lens; and a second adjustment section for adjusting a distance between the reducing projection lens and the sample.

Abstract: A projection type video display is provided with three illuminating devices R, G, B. The illuminating device R emits light in red, the illuminating device G emits light in green, and the illuminating device B emits light in blue. The lights emitted from the respective illuminating devices are guided onto transparent liquid crystal display panels R, G, B by convex lenses. Each illuminating device is formed of a light source, a light guide, a condenser lens, and an integrator lens. The light source is formed of having one or a plurality of LED chips aligned on a plain surface. The LED chips have photonic crystal structure, and a light-emission direction approximately vertical to a light-emitting surface, thus high in directionality.

Abstract: A projection type video display is provided with three LED light sources. A first LED light source emits a light in red, a second LED light source emits a light in green, and a third LED light source emits a light in blue. Lights in respective colors emitted from each LED light source are guided into a light incidence surface of a rod integrator by a cross dichroic mirror. The cross dichroic mirror is formed of a first cross dichroic mirror portion and a second dichroic mirror portion. The first cross dichroic mirror portion is divided into two portions, and the second cross dichroic mirror portion, too, is divided into two portions. The cross dichroic mirror has structure of a cross arrangement in which these four divided portions bring respective corner sides into close contact.

Abstract: A projection type video display is provided with three LED light sources. Lights emitted from each LED light source are guided into a light incidence surface of a rod integrator by a cross dichroic mirror. In a first light incidence area (an area opposite to a LED light source in red) of the cross dichroic mirror, a first dichroic mirror is provided, and in a second light incidence area (an area opposite to a LED light source in blue) of the cross dichroic mirror, a second dichroic mirror is provided. The first dichroic mirror transmits the light in red and reflects lights in other colors, and the second dichroic mirror transmits the light in blue and reflects lights in other colors.

Abstract: A lens array wheel 4 receives light irradiated in a direction parallel to its rotation axis, to cyclically deflect the light. On each of liquid crystal display panels 7R, 7G, and 7B, the light is circularly scrolled, the effect of substantial intermittent illumination is produced, and hold blurring is reduced. A panel driver 15 starts to feed a pixel-driving signal in the succeeding frame to a pixel existing at a position, through which an illuminating area passes, on each of the liquid crystal display panels 7R, 7G, and 7B.

Abstract: Modulated light (image light) which has been modulated by passing through a liquid crystal display panel passes through an apical angle variable prism (so-called, a vari-angle prism) and then is enlarged and projected by a projection lens. The apical angle variable prism is configured to change the prism apical angle with, for example, an electromagnetic actuator. The microcomputer calculates a projection optical axis correction value based on hand shake detection signals from a sensor and controls the aforementioned actuator based on the correction value. With this control, shakes of projected images due to hand shakes are prevented.