Abstract: The laser projection display device (1) includes a laser beam source (5), a laser driver (4) driving the laser beam source, and an image processing unit (2) supplying a display image signal to the laser driver. The image processing unit applies a preliminary emission signal (53) to perform preliminary emission to an image signal (50) in a predetermined period (t0 to t1) immediately before a black pixel signal is switched to a signal except for the black pixel signal when the image signal has a black pixel duration. In particular, the preliminary emission process is performed when the laser beam source is operated in a dark image region while being reduced in maximum light intensity, and, as the preliminary emission signal, a signal (L0) corresponding to a light intensity which is 1/10 or less a maximum light intensity (La) in the dark image region.

Abstract: In an image projection device in which a projected image can be controlled or operated by gesture, the responsiveness (operability) and/or the usability are improved. The image projection device includes a sensor element to detect a gesture and a control section to generated an operation signal to control (for example, to scroll images or to feed image frames) a projected image projected according to a gesture detected by the sensor element, wherein the control section generates the operation signal when the sensor element detects a gesture in a first direction parallel to the projection surface of the projected image, and when the sensor element detects a gesture in a second direction perpendicular to the projection surface, the control section suspends generation of the operation signal.

Abstract: In a wearable information display terminal, information related to an object is displayed at a timing required by a user in an easily recognized form. Photography is performed in a field-of-vision direction, a first object is detected from a first image obtained by the photography, relevant information related to the first object is acquired from a network, and a second image related to the relevant information is generated. A second object different from the first object is detected from the first image, the second object is used as a display trigger, and the second image is displayed when the second object is close to the first object.

Abstract: A laser projection display device includes: a laser light source drive unit; an attribute amount detection unit for detecting the attribute amount of a picture signal; a light sensor for measuring the light amounts of the laser light sources; and a temperature sensor for measuring the temperatures of the laser light sources. The laser projection display device is configured so that the current vs. light amount output characteristics of the laser light sources with a threshold current and current gain as a parameter are corrected in accordance with the load amount of the picture signal per frame if the change of the attribute amount exceeds a predefined amount; the light sources are driven at a predefined timing of the vertical blanking interval; controls the threshold currents and current gains in accordance with the light amounts; and the threshold currents and current gains are corrected on the basis of the measured temperatures.

Abstract: A head mounted display uses an image projection device comprising: an image generation unit for generating an image; a projection unit for guiding the image generated by the image generation unit to an observer's eyes; and a support for linking the projection unit and the image generation unit. The projection unit has a lens function which makes it easiest to see an image generated by the projection unit at a distance (Lobj) within a range between 30 cm and 3 m. Thereby, the image projection device operates at high resolution, has reduced size and weight, and reduces energy consumption.

Abstract: A light irradiation device to display an image by light irradiation prevents easy perception of distortion occurring in the displayed image due to vibration of the device or movement of viewpoint. A random number is generated, and the refresh rate of the displayed image is distributed at random in correspondence with the random number. The light emission intensity is changed in correspondence with the refresh rate. When the number of lines is changed, the input video signal is subjected to scaling and a display is produced. The refresh rate is changed in correspondence with the frequency of the vibration detected with the vibration monitor.

Abstract: A projection type video display device includes a video projecting unit that displays a video by projecting the video onto a video projection plane, sensors and that detect an operator who operates the projection type video display device, operation detecting units and that detect a motion of the operator based on outputs of the sensors, and a control unit that controls the video projecting unit based on a detection result of the operation detecting unit. Preferably, a sensing area in which detections by the sensors are performed when a direction of the video projection plane is vertical and is set to differ from that when the direction of the video projection plane is horizontal.

Abstract: A solid state light source device includes N (an integer of two or more) sets of solid state light source assemblies having a plurality of solid state light source cells arranged in a matrix pattern a multiple lens block including N incidence faces facing the N sets of solid state light source assemblies and causing light emitted from the solid state light source cells to be incident through multiple lens cells of a matrix pattern and one emission face composing the light incident from the N incidence faces and a dichroic filter that is obliquely arranged on the incidence faces inside the multiple lens block and selectively reflects or transmits incident light based on the incident light wavelength. Light distribution characteristics and color temperature of light exiting the emission face of the multiple lens block are controlled by a ratio of power supplied to the solid state light source cells.

Abstract: A beam scanning type display apparatus includes a reflection angle variable mirror that scans a beam light, at least two light detectors disposed at a predetermined distance in a beam scanning direction of the mirror that detects a light amount of screen reflection light, a distortion correction calculation unit that obtains a drive correction value of the mirror by calculating an irradiation distance and a screen inclination, from a light amount of a reflection light detected by the light detectors at two different scanning timings and an inclination angle of the mirror at this time, and a mirror driving unit that controls an inclination angle of the mirror by the drive correction value. A drive correction value of the mirror driving unit is obtained at a plurality of timings of a scanning period of beam light, and beam light is scanned at the corrected inclination angle of the mirror.

Abstract: The present invention prevents image quality degradation due to pixel enlargement even when using an increased angle of inclination on projecting an image obliquely from a laser scanning display device. A swing mirror is controlled so that the scanning line density in the vertical direction of a display section is uniform in accordance with information including the angle of inclination, the distance of projection, and the display size of the display device with respect to the display section. A lens control driver is controlled so that a collecting lens has a focal point on the display section in accordance with a scanning position in the vertical direction of the swing mirror. The swing mirror or an image correction processing unit is controlled so that a display size in the horizontal direction of a display image on the display section is uniform regardless of the scanning position in the vertical direction.

Abstract: A light irradiation device to display an image by light irradiation prevents easy perception of distortion occurring in the displayed image due to vibration of the device or movement of viewpoint. A random number is generated, and the refresh rate of the displayed image is distributed at random in correspondence with the random number. The light emission intensity is changed in correspondence with the refresh rate. When the number of lines is changed, the input video signal is subjected to scaling and a display is produced. The refresh rate is changed in correspondence with the frequency of the vibration detected with the vibration monitor.

Abstract: A laser projector includes a laser light source to emit laser light modulated in accordance with image information, a scanner to drive the laser light along two axes in horizontal and vertical directions and make scanning two-dimensionally with the laser light, a scanning mirror drive part to produce a drive signal of the scanner, a light source data conversion part to change arrangement in a horizontal direction of data applied to the laser light source and a timing generation part to synchronize the scanning mirror drive part with the light source data conversion part, and a start direction of laser scanning in the horizontal direction is changed every frame of the image information.

Abstract: A virtual image display device includes: an image projection device that projects an image light; a diverging element on which the image light emitted from the image projection device is incident, spreading the image light out over a range of a predetermined angle; and a light branching element that reflects the image light emitted from the diverging element, while transmitting the incident light from the surface other than the reflecting surface. The image light from the image projection device is formed into an image on the diverging element. A virtual image of the image formed on the diverging element is generated on an extension line in the opposite direction to the emission direction of the image light reflected from the light branching element. Further, an optical axis converting element is provided to convert the optical axis of the image light emitted from the image projection device, into a predetermined direction.

Abstract: A laser beam display device includes: a dimming setting input unit into which any one of the dimming values of plural dimming steps are input; a first dimming processing unit having plural dimming LUTs that store dimming amounts regarding the respective dimming steps with the corresponding gradation levels as indexes; a second dimming processing unit having one gain LUT that holds gains regarding the respective dimming steps and a multiplier that creates the indexes for the respective dimming LUTs by multiplying a video signal by the gains; and a light source drive unit that drives a laser diode on the basis of reference results obtained by referring to the dimming LUTs of the first dimming processing unit. The luminance of the emission beam of the laser diode, which corresponds to the video signal, is dimmed in accordance with a dimming setting input from the dimming setting input unit.

Abstract: An image display apparatus which displays, as a virtual image, image in a visual field of a user, including an image generation section to generate image; an illumination section to illuminate light to the image generation section; and a projection section by which the image generated by the image generation section is projected, as a virtual image, into the visual field of the user, the projection section includes: a prism lens formed by integrating, by predetermined unit, a lens to generate the virtual image, with a prism provided thereon with a half mirror film which bends, in the direction of the pupil, a signal light from the image generation section; and aperture restriction unit which is provided on the incident surface of the prism lens, and which allows light in a predetermined area of the signal light from the image generation section to pass therethrough.

Abstract: Provided is an image projection device that carries out high precision gesture detection. An image projection device has a projection unit that optically projects image and a gesture detection unit that detects human gestures and generates a signal for operating the projected image on the basis of the detection results. The gesture detection unit controls a range for detecting gesture according to the direction that the projection unit projects light and/or the placement state of the image projection device. The device has a laser light source and photodiode for detecting gestures, or has a pyroelectric sensor for detecting infrared rays.

Abstract: A video projection device 001 includes a video generation section 041 that has a micro display element 003 which generates video and an illuminating optical system 002 which illuminates a micro display element; projection section 043 that project the video which is generated by the video generation section onto the eyes of a user through an eyepiece section; and a mechanical support section 042 that connects the video generation section to the projection section using a housing section. The mechanical support section includes at least one transparent area 011 that is surrounded by the housing section, and penetrates in a direction parallel to a direction in which the video from the projection section is projected. The illuminating optical system includes a light source that emits light in a plurality of wavelength bands, and a controller 440 that controls the output of the light source.

Abstract: Two pieces of elliptic semi-sphere surfaces, each forming a pinhole at the zenith thereof and also forming a reflection mirror on an inside thereof are stuck onto each other, with facing the interior surfaces thereof, respectively. A light ray entering therein from one of the pinholes, after being reflected between the elliptic semi-sphere surfaces facing to each other, emits from the pinhole on opposite side at an angle plane symmetric to the incident angle. Disposing the elliptic semi-sphere surfaces facing to each other, aligning on a plane, by plural numbers thereof, there is built up a pinhole array. Plural numbers of light rays reflecting on and/or emitting from a display object, which is disposed on one side of the pinhole array, after passing through the plural numbers of pinholes of the pinhole array, form an image at a position plane symmetric thereto, on the opposite side of the pinhole array.

Abstract: A scanning type projector two-dimensionally projecting a laser beam and generating an image according to the present invention comprises: a light source having a light intensity corresponding to a pixel of the image and emitting a laser beam having an elliptical beam; a collimator lens collimating a laser beam emitted from the light source without converting the same into focused light; a beam contracting/shaping element that reduces a luminous beam width in a predetermined direction of the laser beam emitted from the collimator lens; a condensing lens that converts a laser beam emitted from the beam contracting/shaping element into focused light corresponding to a projection distance; and a two-dimensional scanning unit configured to two-dimensionally scan and project a laser beam emitted from the condensing lens.

Abstract: A light source module and an image projection device which can have high resolution and high optical efficiency are provided with a simple optical system. A light source module includes a light source unit formed by a plurality of stacked light emission surfaces which emit lights of at least red, blue, and green wavelength bands, and a light-source drive and control unit which supplies a driving current to the respective light emission surfaces of the light source unit. Each of the light emission surfaces of the light source unit has a nanostructure smaller than a wavelength of visible light near a p-n junction provided in a semiconductor having a larger band gap than the visible light, and emits a light of a corresponding one of the wavelength bands via a phonon level.