Abstract: A laser lighting device provides a broad range illumination for an area, such as a smoke filled space, a hallway or an underwater environment with certain turbidity. This lighting device contains a laser diode as a light source and a diffraction grating that is able to diffract an input laser light beam generated from the laser diode into a plurality of output laser light beams with the cross section of the plurality of output laser light beams forming a pattern comprising a plurality of light spots. In addition, this pattern may be in a donut shape. That is to say, the power of a light spot formed by a zero order light beam is lower than other light spots' power. Further, this laser lighting device is used to provide lighting with depth perception and forward visibility.

Abstract: Disclosed is a diffraction microscopy capable of reducing influence of an increase in the incident angle range of a beam. Specifically disclosed is a diffraction microscopy in which a beam is incident on a sample, in which the intensity of a diffraction pattern from the sample is measured, and in which an image of an object is rebuilt using Fourier interactive phase retrieval on the basis of the measured intensity of the diffraction pattern. In this method, Fourier interactive phase retrieval is performed using deconvolution on the diffraction pattern subjected to convolution by the increase in the incident angle range of the beam.

Abstract: An optical member includes: a total reflection mirror including a reflection surface for reflecting a laser beam; a filter including a partially transmissive surface for passing therethrough a part of the laser beam and reflecting the remaining part of the laser beam, the partially transmissive surface being located so as to be opposed to the reflection surface ; and a diffraction grating into which the laser beam enters, for diffracting the incident laser beam to enter the total reflection mirror or the partially transmissive filter.

Abstract: Disclosed is a laser light system for narrow hallways, a night light for small rooms, and a fire evacuation system. The system provides a means for less infrastructure to light narrow and small areas as well as directional lighting for fire escape.

Abstract: A display device including a plurality of image projection devices and a display. The display device provides received content to the display and provides image signals to the plurality of image projection devices. In response to the provided image signals, the plurality of image projection devices project images on an area of a display surface that is separate from the display. A plurality of image capture devices positioned around the display device operate during a calibration and/or alignment procedure of the plurality of image projection devices to calibrate and/or align the projected images.

Abstract: There is provided a light source unit which includes a luminescent light source which receives excitation light so as to emit light of a predetermined wavelength band, excitation light sources which shine excitation light on to the luminescent light source, a reflection space having the luminescent light source in an interior thereof and an emission space which emits luminescent light source light emitted from the reflection space from an emission port whose area is made smaller than the area of the luminescent light source and a projector which employs the light source unit.

Abstract: Disclosed herein is a display device using an optical modulator equipped with a lens system having an improved numerical aperture. The display device includes numerical aperture reducer for reducing a numeral aperture by causing +1st order diffracted light and corresponding ?1st order diffracted light of a diffracted light, which have passed through a relay lens system, to approach each other.

Abstract: A display system (10) with reduced speckle has a light source (70) providing an illumination beam and a linear light modulator (85) having at least one linear array of light modulating devices for forming a modulated beam. The modulated beam has a plurality of orders of diffracted light. An obstructing element (82r,82g,82b) blocks a zeroeth order reflected light from the modulated beam. An angle-transforming optical assembly (30) anamorphically conditions the modulated beam. A scanning element (77) scans the modulated beam toward a display surface (90) for forming a two-dimensional image thereon.