To detect a fluorescent light and a phosphorescent light emitted from a paper sheet with a high precision, a fluorescence and phosphorescence detecting apparatus includes two sensor units. Each sensor unit includes a light source that emits an ultraviolet light on the paper sheet, an image sensor that captures images of the fluorescent light and the phosphorescent light excited on the paper sheet by irradiation of the ultraviolet light, and a light receiving lens that guides the fluorescent light and the phosphorescent light excited on the paper sheet to the image sensor. The two sensor units are arranged above and below the transport path and opposing each other across the transport path, and the light receiving lenses and the image sensors in the two sensor units are off-set along a transport direction of the paper sheet.

Disclosed are an optical member, a display device having the same, and a method of fabricating the same. The optical member includes a receiving part having an empty space therein, a host in the receiving part, a plurality of wavelength conversion particles in the host, a sealing part in the receiving part, and a pre-treatment layer between the sealing part and an inner surface of the receiving part.

A method and device for emitting electromagnetic radiation at high power using nonpolar or semipolar gallium containing substrates such as GaN, AlN, InN, InGaN, AlGaN, and AlInGaN, is provided. In various embodiments, the laser device includes plural laser emitters emitting green or blue laser light, integrated a substrate.

A light emitting device including a transparent board elongated in a first direction and having a first surface and an opposite second surface. Light emitting elements are arranged in the first direction on the first surface side of the board. A transparent bulb houses the board and the elements. A base is connected to the bulb, and leads electrically connect the elements to the base. The leads have a first end portion connected to the base, and an opposite second end portion. Conductive members are respectively connected to the second end portions of the leads, and the conductive members are arranged at both side of the elements on the board in the first direction. A first wavelength converting member is provided on the first surface and seals the elements. The first wavelength converting member is elongated in the first direction. The second surface of the board faces the base.

An LED lighting module includes a substrate and multiple divergent types of LED light sources that have different wavelengths and are housed on the substrate. The multiple LED light sources include: a phosphor-converted amber source; a phosphor-converted green source; a direct emission red source; a direct emission green source; a direct emission blue source; and a direct emission cyan source. The module can further include a controllable power source unit configured to supply the LED light sources and a control unit to control the power supply unit.

Combinations of solid state light emitters, optionally arranged to stimulate one or more lumiphoric materials, are used to illuminate surfaces (e.g., upright surfaces) including printed material produced with CMY or CMYK inks. Vibrancy and/or efficacy may be enhanced by increasing the effective steepness of printed ink reflectance wavelength boundaries by illuminating printed material with solid state light emitters of multiple colors having tailored boundaries (e.g., increased separation between colors and/or increased energy in spectral areas highly reflected by CMY inks, or reducing energy of emissions at wavelengths to which the human eye is less sensitive). Lighting devices may include multiple operating modes having different gamut properties (e.g., relative gamut values). One or more subregions of an upright surface bearing printed material may be preferentially illuminated with an array of solid state light emitters including multiple emitters having different peak wavelengths.

A light source device comprising: a light source section which generates any one of blue light, red light, and green light; a phosphor which generates a fluorescence including the two colors other than the color of the light emitted from the light source section; a color-changing section which changes one of the two colors of the fluorescence emitted from the phosphor to another color regularly and irradiates it to the image-forming element; and a light path-switching section which switches a light path in which a fluorescence excited by the color light emitted from the light source section passes towards the color-changing section and a light path in which the color light emitted from the light source section passes towards the image-forming element regularly.

An optical component includes a support member having a through-hole, a second light-transmissive member disposed inside the through-hole, and having a light incidence face, a light emission face, and an outer peripheral side surface, and at least one functional film selected from a group consisting of a short pass filter, a long pass filter, and a heat dissipation member and disposed on a surface of the second light-transmissive member.

Multi-phase polymer films of quantum dots (QDs) and their use in light emitting devices (LEDs) are disclosed. The QDs are absorbed in a host matrix, which dispersed within an outer polymer phase. The host matrix is hydrophobic and is compatible with the surface of the QDs. The host matrix may also include a scaffolding material that prevents the QDs from agglomerating. The outer polymer is typically more hydrophilic and prevents oxygen from contacting the QDs.

A phosphor layer comprising a phosphor plate adhesively formed by a phosphor powder and an adhesive agent. The phosphor plate has a front side and a back side. The phosphor layer also has particles which are fixedly connected to the front and/or back side of the phosphor plate. Also provided in the present invention are a phosphor component, a corresponding light source, a projection system, and a method for manufacturing the phosphor layer. The phosphor component prevents adhesion between the phosphor plate and substrates thereof in high temperature conditions. A manufacturing method for the phosphor layer includes forming a phosphor plate by adhesively fixing a phosphor powder by an adhesive agent, the phosphor plate having a front side and a back side, and fixedly connecting at least one particle to the front and/or back side of the phosphor plate.