The invention relates to an optical element including a resin body having a functional surface covered with a reflective coating capable of reflecting light beams, the reflective coating including a copper layer covering at least the functional surface, a nickel layer covering the copper layer, and a chromium layer covering the nickel layer.

The invention relates to an optical element including a resin body having a functional surface covered with a reflective coating capable of reflecting light beams, the reflective coating including a copper layer covering at least the functional surface, a nickel layer covering the copper layer, and a chromium layer covering the nickel layer.

An optical device includes a metal reflective layer substantially made of a metal material, a first light transmissive layer disposed on the metal reflective layer, an optical multilayer reflective film disposed on the first light transmissive layer and including a plurality of sublayers stacked on each other and having different refractive indexes, and a wavelength converting layer disposed on the optical multilayer reflective film and containing a fluorescent material capable of absorbing incident excitation light and generating fluorescent light having a lower energy. The wavelength converting layer is capable of generating mixed light containing the excitation light and the fluorescent light in response to irradiation with the excitation light.

A digitally controlled LED illuminator sheet that produces far-field illumination patterns or light field distributions that increase light utilization and application efficiency. A dynamic directional LEDs (or other kinds of solid-state light sources) sheet is positioned under each lenslet of a microlens array. Individual LED beam pointing direction depends on off-axis position relative to optical axis of lenslet. Individual beams from independent LEDs form illumination pixels at the illumination plane or within a volume space and can be modulated in intensity. Illumination pixels partially overlap in far-field illumination plane and illumination volume. Data from sensors can be collected and the LEDs can be digitally turned on or off and/or pulse width or amplitude modulated based on sensor data to produce far-field illumination patterns or light field distributions with spectral efficiency and efficacious intensity.

A digitally controlled LED illuminator sheet that produces far-field illumination patterns or light field distributions that increase light utilization and application efficiency. A dynamic directional LEDs (or other kinds of solid-state light sources) sheet is positioned under each lenslet of a microlens array. Individual LED beam pointing direction depends on off-axis position relative to optical axis of lenslet. Individual beams from independent LEDs form illumination pixels at the illumination plane or within a volume space and can be modulated in intensity. Illumination pixels partially overlap in far-field illumination plane and illumination volume. Data from sensors can be collected and the LEDs can be digitally turned on or off and/or pulse width or amplitude modulated based on sensor data to produce far-field illumination patterns or light field distributions with spectral efficiency and efficacious intensity.

This disclosure relates to a handheld camera mount and reflector system. The reflector system includes a collapsible rod member having a collapsible reflector attached at one end of the rod. A handle is connected at the other end of the rod. A camera mount is attached to the rod between the reflector and the handle. The surface of the reflector can be adapted to adjust reflectivity, diffusion and color spectrum.

This disclosure relates to a handheld camera mount and reflector system. The reflector system includes a collapsible rod member having a collapsible reflector attached at one end of the rod. A handle is connected at the other end of the rod. A camera mount is attached to the rod between the reflector and the handle. The surface of the reflector can be adapted to adjust reflectivity, diffusion and color spectrum.

A planar light source device includes a light diffusing portion and a light reflecting portion in this order. The light diffusing portion has light transmissivity and light diffusivity. Reflectance of the light reflecting portion with respect to light of a particular wavelength entering at an angle of incidence of 0° is 80% or higher. The reflectance of the light reflecting portion with respect to at least part of light of the particular wavelength entering at an angle of incidence of which an absolute value is greater than 45° is less than 50%.

A light source device is provided in which the number of LD chips can be easily optimized and that has a high light utilization efficiency. The light source device includes a first light source unit that emits a first monochromatic light, a second light source unit that emits a second monochromatic light of the same color as the first monochromatic light, an optical member that splits the first monochromatic light emitted by the first light source unit into a first split light and a second split light and that integrates the first split light and the second monochromatic light emitted by the second light source unit into one optical path, and a phosphor unit that receives the second split light or the integrated light to emit fluorescent light.

An acoustic structure includes: at least one hollow section defined by a pair of opposed transparent or translucent wall members and a plurality of connecting wall members interconnecting the pair of wall members, and at least one opening portion communicating an interior space inside the hollow section to an exterior space. At least some of the connecting wall members may have colorless or colored transparency or translucence. Further, a mirror surface may be provided on any desired portion of the wall members defining the hollow section. Furthermore, a lighting device may be disposed near the outside or inside of the hollow section. Because light or a scene on the opposite side of the acoustic structure is visible through the transparent or translucent wall member, design quality and usability of the acoustic structure can be enhanced.