摘要:
Disclosed herein is an apparatus for calibrating the displacement of reflective parts in a diffractive optical modulator. The apparatus includes a diffractive optical modulator, a light intensity measurement unit, a projection unit, and display electronics. The light intensity measurement unit is disposed near one side of the diffractive optical modulator and measures and outputs the intensity of incident linear diffracted light having a predetermined diffraction order.
摘要:
Disclosed herein is a raster scanning-type display device using a diffractive optical modulator. The raster scanning-type display device includes an optical illumination unit, a diffractive optical modulator, and a projection unit. The optical illumination unit radiates light, which is emitted from a light source, in a spot beam form. The diffractive optical modulator causes an element to modulate the spot beam incident from the optical illumination unit, and generate diffracted light whose intensity is adjusted and which has a plurality of diffraction orders. The projection unit generates an image by projecting the diffracted light incident from the diffractive optical modulator onto a screen in a scanning spot beam form and performing raster scanning in which horizontal scanning and vertical scanning are alternated.
摘要:
Disclosed herein is a printing apparatus using an order-separation type optical modulator. The printing apparatus includes an illumination lens system, a diffraction type optical modulator, a filter system, and a projection system. The illumination lens system converts light, which is output from a light source, into linear light and outputs linear, parallel light, the diffraction type optical modulator performs desired modulation on the linear, parallel light emitted from the illumination lens system and forms diffracted light having a plurality of diffraction orders.
摘要:
Disclosed herein is a lighting apparatus. The lighting apparatus includes: a first light emitting unit including one or more main light sources radiating white light downward; one or more second light emitting units formed at the sides under the first light emitting unit and including one or more sub-light sources radiating color light that is mixed with the white light radiated from the first light emitting unit; and a light guide plate mixing the white light radiated from the main light sources and the color light radiated from the sub-light sources and radiating the mixed light downward.According to the embodiments, it is possible to remove non-uniformity of luminance of the lighting apparatus that can control color temperature by efficiently disposing main light sources radiating white light and sub-light sources radiating color light. Further, it is possible to increase efficiency of the lighting apparatus by radiating light, using all of the main light sources even at any color temperature.
摘要:
A mobile terminal includes an optical modulation projector. The mobile terminal also includes a control system, a projection control unit, and an optical modulation system. The control system outputs a projection control signal and image data. The projection control unit receives the image data from the control system, and generates and outputs a drive control signal depending on the image data received. The optical modulation system generates and modulates light and generates an image in response to the drive control signal and then scans the image for projecting onto a screen.
摘要:
Disclosed is a lighting control apparatus. According to one embodiment of the present invention, a lighting system control be easily configured, maintained, and repaired since additional light and block control of the lighting can be provided with ease by wireless control of the lighting through wireless communication. In addition, the present invention can control individual lamps by storing a control signal corresponding to an address for each lamp in a gateway according to a predetermined scenario.
摘要:
There is provided a system of controlling product display lighting capable of controlling brightness levels and/or colors of illuminating light suitable for corresponding products according to characteristics of products, such as kinds or colors of products. The system of controlling product display lighting may include an information input unit acquiring information on products; a coordinator determining brightness levels and colors of illuminating light provided to the products according to the information on the products; a light source driver generating light source driving signals for outputting the determined brightness levels and colors of illuminating light in the coordinator; and a light source unit outputting illumination light having the brightness levels and colors of illuminating light determined in the coordinator by the light source driving signals.
摘要:
Disclosed is a scanning display apparatus using a laser beam source. In accordance with an embodiment of the present invention, the scanning display apparatus can include a lighting optical system, configured to use a laser device as a light source, the laser device outputting a plurality of beams having different wavelengths that are recognized as an identical color; an optical modulator, configured to output a modulation beam by diffracting a beam transferred from the lighting optical system; a diffuser, placed on an optical path of the modulation beam outputted from the optical modulator and configured to expand a width of the modulation beam through a diffraction grating pattern formed on one surface of the diffuser; and a scanning mirror, configured to scan the modulation beam having passed through the diffuser on a screen.
摘要:
Disclosed are an optical modulator and an optical modulator module that can reduce a laser speckle. The optical modulator module can include an optical modulator, modulating an incident beam of light incident according to a driving signal and outputting the modulated beam of light; and a light transmissive substrate, placed in the optical modulator and formed with a phase control pattern, the incident beam of light and the outputted beam of light passing through the light transmissive substrate and the phase control pattern being formed in a part of a surface that is a light path of the incident beam of light and the outputted beam of light. Here, the phase control pattern, a central peak of an autocorrelation function can have a width that is smaller than a width of the phase control pattern, and a side lobe level is smaller than a level of the central peak.
摘要:
Disclosed are a light homogenizing device and a display apparatus including the same. The light homogenizing device can include a light source; a polarization rotator, including two planes of polarization that are vertical to each other, and receiving a beam of light incident from the light source and outputting a polarized linear beam of light having different polarization depending on driving voltage; and a birefringent plate, receiving the polarized linear beam of light and outputting two refracted beams of light proceeding by being refracted in different directions. Here, the two refracted beams of light can be combined at a predetermined point into a uniform beam of light. With the present invention, the light homogenizing device can improve the uniformity of an image through the decrease of a fringe pattern.