Abstract: A display device using a tilt-mirror device and a projector. The image display device may include a first color-ray light-source for supplying a G-ray, a second color-ray light-source for supplying a R-ray or B-ray, and a tilt-mirror device having a plurality of movable mirror elements that may be switched between a first reflection position and a second reflection position. The first color-ray light-source may be arranged so that the G-ray is reflected in a predetermined direction when the movable mirror elements are located in the first reflection position, and the second color-ray light-source can be arranged so that the R-ray or B-ray is reflected in a predetermined direction when the movable mirror elements are located in the second reflection position. The color-ray light-sources may be conjugated with an entrance pupil of the projection lens of the projector.

Abstract: An image display apparatus includes: a plurality of laser beam sources which emit different color light beams; a plurality of light modulators which modulate the light beams emitted from the laser beam sources; and a projection element which projects the light beams modulated by the light modulators, wherein the light modulators are disposed such that the light beams are incident from different directions, and the laser beam sources are concentrated in a single position.

Abstract: An image display device includes a laser light source, a wavelength conversion element converting a wavelength of a light beam emitted from the laser light source into a predetermined wavelength, and a light modulating device modulating the laser beam output from the wavelength conversion element, wherein the laser beam emitted from the laser light source has a frequency of integral multiplication of the maximum modulation frequency of the light modulating device, and has a pulse width narrower than a time period during which the light modulating device is in a stable state.

Abstract: A projector includes: a light source device that emits a laser beam toward a projected surface; a scanning unit that scans the laser beam emitted from the light source device; a light diffusion member that diffuses the laser beam used for scanning by the scanning unit; and a converging unit that converges the laser beam going out from the light diffusion member on the protected surface.

Abstract: An image display device and a projector using th image display device includes a tilt-mirror device having a plurality of movable mirror elements. A first color-ray light-source may be arranged so that a first color-ray light is reflected in a predetermined direction when the movable mirror elements are located in the first reflective position, and is reflected in a direction different from the predetemined directon when the movable miror elements are located in the second reflection position. A second color-ray light-source may be arranged so that a second color-ray light is reflected in the predetemined direction when the mobable mirror elements are located in the second reflection position, and is reflected in a direction different from the predetermined direction when the movable mirror elements are located in the first reflection position.

Abstract: An image display device for displaying an image by a light beam modulated according to an image signal includes: a light source unit that supplies the light beam; a scanning unit for performing scanning with the light beam from the light source unit; a screen that transmits the light beam from the scanning unit; a light detection unit that detects light incoming from the screen via the scanning unit; and a light beam emission stop unit that stops emission of the light beam from the image display device according to an output from the light detection unit.

Abstract: A laser source device includes: a plurality of lasers; wavelength converting elements that convert wavelengths of a plurality of light beams emitted from the plurality of lasers; a temperature sensor that detects the temperatures of the wavelength converting elements; and a temperature controlling unit that controls the temperatures of the wavelength converting elements on the basis of an output of the temperature sensor.

Abstract: A projector includes a laser beam source that outputs a laser beam and modulates the laser beam in a beam form based on an image signal, a scanning unit that scans the laser beam output by the laser beam source at least in one-dimensional direction, a scan driving unit that drive controls the scanning unit by a first force, a retaining unit that stops and retains the scanning unit at a predetermined position by a second force, and a light shielding unit that shields the laser beam from the scanning unit that is retained by the retaining unit. The scan driving unit releases the scanning unit retained by the retaining unit, and drives it when the first force is larger than the second force. The retaining unit stops and retains the scanning unit at the predetermined position when the second force is larger than the first force.

Abstract: The invention relates to a small-format exposure head wherein ball lenses are positioned in alignment with individual devices of an organic EL array to efficiently collect a light beam from each device onto an image carrier such as a photosensitive material with no crosstalk yet with sufficient resolving power, and an imaging system incorporating the same. An array of organic EL devices is provided on a long length of substrate 3 in at least one row of pixel arrangement. On the light-emitting side of the array of organic EL devices, a ball lens 10 is positioned in alignment and contact with each light emitter 2 of the organic EL device. The ball lens 10 formed of a transparent material having a refractive index of 2 or greater.

Abstract: An image display device includes a light source that supplies beam-like light; a scanning portion that scans light from the light source to display an image by using light from the scanning portion; and a connecting portion that electrically connects the light source and an external power source that supplies electric power to the light source; wherein the connecting portion is disposed in an optical path of light from the light source past the scanning portion, and, when light is irradiated from the scanning portion at energy equal to or more than predetermined energy, disconnects an electrical connection between the light source and the external power source.

Abstract: The present invention relates to a small optical writing head, such as an organic EL array exposure head, having long work distance with little crosstalk, a method of manufacturing the same, and an image forming apparatus using the same. The optical writing head is an optical writing head which projects fluxes of modulated light from light-emitting parts 2 of a light-emitting element array such as an organic EL array or fluxes of modulated light transmitted through shutter parts 2 of an optical shutter element array onto an image carrier 11 to form a predetermined pattern on the image carrier 11. The optical writing head comprises ball lenses 10 which are arranged such that the alignment of the ball lenses 10 corresponds to the alignment of the light-emitting parts 2 of the light-emitting element array or the shutter parts 2 of the optical shutter element array.

Abstract: Exemplary embodiments of the present invention provide a display panel or the like in which it is easy to enlarge a size of the display panel. A display panel according to exemplary embodiments includes a first transparent electrode layer and a second transparent electrode layer which are optically transparent, a conductivity-variable layer which is provided on the first transparent electrode layer, and an electroluminescent layer which is provided between the conductivity-variable layer and the second transparent electrode layer, and which emits light by applying a voltage thereto.

Abstract: A light source device includes at least two light emitting parts which emit light; and a polarization separating part which transmits polarized light in a first vibrating direction of the lights from the light emitting part, and reflects polarized light in a second vibrating direction nearly orthogonal to the first vibrating direction, thereby to separate the lights from the light emitting part into the polarized light in the first vibrating direction and the polarized light in the second vibrating direction. Herein, the light emitting part includes a reflection part which reflects light that travels toward the light emitting part from the polarization separating part, in the direction of the polarization separating part.

Abstract: Exemplary embodiments of the invention provide a spatial light modulator that is inexpensive, has a long life and a high light use efficiency, and with which can be obtained a high-contrast image, and a projector disposed with the spatial light modulator. Exemplary embodiments provide a spatial light modulator including a liquid crystal layer that includes plural aperture regions AP, modulates light in accordance with image signals and emits the modulated light; and microlens elements that are disposed at an incident side of the liquid crystal layer in correspondence to the aperture regions AP and condense the light made incident so that the light passes through the aperture regions AP. The microlens elements include plural focal positions f1 and f2 that are different per plural substantially annular portions R1 and R2 around an optical axis AX.

Abstract: A projector of rear-projection type including a light source that outputs a laser beam and a scanner that scans a screen with the laser beam. When a laser beam with energy exceeds an accessible emission limit due to failure of the light source or the scanner, at least one optical member located in an optical path of the laser beam is arranged so as to be broken or altered in quality and to prevent or discourage the beam with energy exceeding the accessible emission limit from being output from the screen.

Abstract: A projector includes a super-high pressure mercury lamp a spatial light-modulator that modulates a light from the super-high mercury lamp based on an image signal, a projection lens that projects the light modulated, and an optical filter that is used to insert a prism group in the optical path and to remove the prism group that is inserted in the optical path, and a position fixing part that makes a relative-angle between each spatial light-modulator and the prism group constant.

Abstract: Aspects of the invention can provide a light source that can reduce the optical system in size while enlarging a color reproducible range and achieving higher luminance. The system can include a cross dichroic prism to combine an R light, a G1 light, a G2 light, and a B light, and an LED R to generate the R light, an LED G1 to generate the G1 light, an LED G2 to generate the G2 light, and an LED B, disposed near the LED G2 to be side by side, to generate the B light, as well as a control portion to drive these LED R, LED G1, LED G2, and LED B under control. The peak wavelengths of the G2 light and the B light are adjacent to each other, and the control portion can drive the LED G2 and the LED B under its control by switching in time division.

Abstract: Exemplary embodiments of the invention provide a display panel, etc. which can be controlled by optical addressing, and which are simple in construction and can reduce costs. According to exemplary embodiments, a display device includes a first transparent electrode layer and a second transparent electrode layer which are optically transparent, a variable conductivity layer which is disposed on the first transparent electrode layer and whose electrical conductivity is changed in accordance with the light quantity of control light L transmitted through the first transparent electrode layer, and a functional layer having at least a light emission layer, which is stacked on the variable conductivity layer and which is interposed between the variable conductivity layer and the second transparent electrode layer.

Abstract: An optically controlled device includes a transparent electrode, a conductivity variable portion, a driving electrode, a movable unit, and a support portion. A method of controlling the optically controlled device includes inputting a control light into the transparent electrode, applying a voltage modulated according to an input signal between the transparent electrode and the movable unit, and moving the movable unit to a predetermined position by generating a force corresponding to the voltage between the driving electrode and the movable unit base on a charge of electrical conductivity of the conductivity variable portion.

Abstract: To provide a miniaturized lighting device that emits light appropriate for illumination of a display system and a projection type display system including the lighting device. A lighting device includes solid-state light sources to emit light, light introducing elements to equalize an illumination distribution of the light emitted from the solid-state light sources, and reflection type polarizing elements into which the light emitted from the solid-state light sources is introduced. The lighting device is characterized in that the reflection type polarizing elements are disposed inside the light introducing elements or on light exit end faces of the light introducing elements, and that the solid-state light sources reflect the light which has been reflected by the reflection type polarizing elements.