Abstract:
Disclosed herein is an LED flash lens unit which prevents occurrence of yellow bands or yellow rings if LED light is concentrated through an LED flash lens improving manufacturing ability and mass production to have high performance and high efficiency.
Abstract:
The optoelectronic semiconductor part uses a component made of metal phosphate. Said metal phosphate is substantially free of components that contain alkali and halogen. Said metal phosphate is used in particular as an adhesive for parts and/or particles.
Abstract:
The invention concerns a light source unit of tunable spectral properties, having a pump light source and a phosphor element for a conversion of pump light into converted light intended for illuminating a target, wherein the phosphor element has at least two phosphor element sections interacting differently with pump light, and wherein the light source unit further comprises a deflecting unit, such as a zoom lens or a variable diffraction grating, for deflecting the pump light so as to vary a distribution of pump light incident onto the phosphor element with respect to the different phosphor element sections, in order to vary spectral properties of the combined converted light beam emanating from the light source unit.
Abstract:
The present invention relates to a light collector for collecting light emitted by a light source and converting the collected light into a light beam, The light collector comprises a central lens part (219) aligned along an optical axis (215) of the light source where the central lens comprises a central entrance surface (303) and a central exit surface (305). The light collector also has a peripheral lens part (221) surrounding at least a part of the central lens. The lens parts are rotationally asymmetric in relation to the optical axis, thereby distorting the emitted light. Said central and peripheral lenses are mutually adapted to convert said light (215) emitted by said light source into a common light beam having a substantially circular and rotationally asymmetric cross sectional light distribution, where said common light beam comprises said first light beam part (223) and second light beam part (225).
Abstract:
An illumination device includes a light source including a plurality of light emitting devices that are arranged to generate and guide light and having tilted gain regions in which guiding directions of the light are tilted with respect to a perpendicular of output surfaces of the light, an optical axis conversion device that is arranged to bend optical axes of the light output from the light source, and a light distribution control device that is arranged to control a light distribution angle of the light output from the optical axis conversion device, wherein the light emitting devices are super luminescent diodes, and the light output from the light distribution control device is arranged to diverge.
Abstract:
Disclosed herein is an LED flash lens unit which prevents occurrence of yellow bands or yellow rings if LED light is concentrated through an LED flash lens improving manufacturing ability and mass production to have high performance and high efficiency.
Abstract:
The invention consists in passing a laser beam (3) from each of laser sources (1) through its individual first optical system (4), single reflecting this beam (3) from a substantially flat individual reflecting surface (7) towards an input facet (10') of an optic fiber (10) and focusing this beam (3) by a second common optical system on the input facet (10') of the fiber (10). The laser beams (3) are emitted by laser modules (1), each containing a single laser source in an individual housing (2) with a first optical system (4), fixed with respect to the housing (2). The housing (2) of each laser module (1) is mounted in a holder (17, 20). The second optical system (9) is placed directly in front of the input facet (10') of the fiber (10). An axis (12) of each first optical system (3) forms with an axis (13) of the second optical system (9) an angle (α) ranging between 45 (α') and 145 (α'') degrees. The individual reflecting surfaces (7) are either on the oblique truncations of rods (15, 19) placed parallel to the optical axis (13) of the second optical system (9) or on the lateral faces of the regular pyramid (8) with the number of sides of the pyramid base equal to the number of laser modules (1). Optical axis (13) of the second optical system (9) passes through the vertex and through the center of the base of this pyramid (8).