Abstract: A spectrometer (100) and an optical input portion (32) thereof are disclosed. The optical input portion (32) comprises an assembly structure (322), and the assembly structure (322) is formed at a hole wall (321) of a through hole (3211) of the optical input portion (32). A light (L1) is incident into a dispersing element (2) of the spectrometer (100) along an optical path (13) after passing through the through hole (3211), and is dispersed by the dispersing element (2). The assembly structure (322) is used to be detachably assembled with an optical element (200). When the optical element (200) is assembled with the assembly structure (322), an optical axis of the optical element (200) is linked to the optical path (13). As a result, the light (L1) passing through the optical element (200) is incident to the dispersing element (2) along the optical axis and the optical path (13).

Abstract: A spectrometer comprising a waveguide module, a diffractive component, and a light sensor is provided. The waveguide module has a first reflective surface, a second reflective surface opposite to the first reflective surface, and a light channel between the first reflective surface and the second reflective surface. The diffractive component has a diffractive surface and a plurality of strip-shaped diffractive structures located on the diffractive surface. The sharpness of the profile of the strip-shaped diffractive structures on a first side of the diffractive surface is greater than that on a second side of the diffractive surface. When viewed along a direction perpendicular to the second reflective surface, the first side of the diffractive surface is positioned between the first reflective surface and the second reflective surface with a distance away from the second reflective surface. A method for assembling the spectrometer and an assembling system are also provided.

Abstract: A spectrometer (100) and an optical input portion (32) thereof are disclosed. The optical input portion (32) comprises an assembly structure (322), and the assembly structure (322) is formed at a hole wall (321) of a through hole (3211) of the optical input portion (32). A light (L1) is incident into a dispersing element (2) of the spectrometer (100) along an optical path (13) after passing through the through hole (3211), and is dispersed by the dispersing element (2). The assembly structure (322) is used to be detachably assembled with an optical element (200). When the optical element (200) is assembled with the assembly structure (322), an optical axis of the optical element (200) is linked to the optical path (13). As a result, the light (L1) passing through the optical element (200) is incident to the dispersing element (2) along the optical axis and the optical path (13).

Abstract: A spectrometer comprising a waveguide module, a diffractive component, and a light sensor is provided. The waveguide module has a first reflective surface, a second reflective surface opposite to the first reflective surface, and a light channel between the first reflective surface and the second reflective surface. The diffractive component has a diffractive surface and a plurality of strip-shaped diffractive structures located on the diffractive surface. The sharpness of the profile of the strip-shaped diffractive structures on a first side of the diffractive surface is greater than that on a second side of the diffractive surface. When viewed along a direction perpendicular to the second reflective surface, the first side of the diffractive surface is positioned between the first reflective surface and the second reflective surface with a distance away from the second reflective surface. A method for assembling the spectrometer and an assembling system are also provided.

Abstract: A spectrometer comprising a waveguide module, a diffractive component, and a light sensor is provided. The waveguide module has a first reflective surface, a second reflective surface opposite to the first reflective surface, and a light channel between the first reflective surface and the second reflective surface. The diffractive component has a diffractive surface and a plurality of strip-shaped diffractive structures located on the diffractive surface. The sharpness of the profile of the strip-shaped diffractive structures on a first side of the diffractive surface is greater than that on a second side of the diffractive surface. When viewed along a direction perpendicular to the second reflective surface, the first side of the diffractive surface is positioned between the first reflective surface and the second reflective surface with a distance away from the second reflective surface. A method for assembling the spectrometer and an assembling system are also provided.

Abstract: A spectrometer comprising a waveguide module, a diffractive component, and a light sensor is provided. The waveguide module has a first reflective surface, a second reflective surface opposite to the first reflective surface, and a light channel between the first reflective surface and the second reflective surface. The diffractive component has a diffractive surface and a plurality of strip-shaped diffractive structures located on the diffractive surface. The sharpness of the profile of the strip-shaped diffractive structures on a first side of the diffractive surface is greater than that on a second side of the diffractive surface. When viewed along a direction perpendicular to the second reflective surface, the first side of the diffractive surface is positioned between the first reflective surface and the second reflective surface with a distance away from the second reflective surface. A method for assembling the spectrometer and an assembling system are also provided.

Abstract: A light emitting diode illuminator includes a reflecting shell (120), a light emitting diode light source (140) and a transparent cover (160). The reflecting shell includes a plurality of sequentially connected hollow tapered bodies (122, 124) having different taper angles. The tapered bodies cooperatively form a receiving space (123). The light source is installed at an end of the receiving space. The transparent cover is disposed at an opposite end of the reflecting shell away from to the light source and configured for directing light emitted from the light source out from the light emitting diode illuminator.

Abstract: A lighting apparatus includes a reflector, a light source, and a lens unit. The reflector has an open side, and a reflective surface that extends from a periphery of the open side and that defines a compartment. The light source is disposed in the compartment and emits light toward the reflective surface. The reflective surface reflects the light from the light source towards the open side. The lens unit is disposed to close the open side and permits passage of the light reflected by the reflective surface therethrough. The lens unit includes a central lens portion, and first and second side lens portions respectively disposed on two sides of the central lens portion. The central lens portion and the first and second side lens portions are Fresnel lenses, and are configured to redirect the light passing therethrough to result in rectangularly-distributed illumination outwardly of the lighting apparatus.

Abstract: A backlight module (300) includes a plurality of illumination devices (100). Each of the illumination devices includes a light guide block (120) and a point light source (140) optically coupled with the light guide block. The light guide block includes a light exit surface (121), a bottom surface (123) opposite to the light exit surface, and a tapered portion (122) located between the light exit surface and the bottom surface. The bottom surface has a receiving hole (1232) formed therein. The tapered portion includes an outside surface (1221) and a prism array (1224) formed on the outside surface. The point light source is secured in the receiving hole. The plurality of illumination devices are joined with one another and the light exit surfaces of light guide blocks are substantially coplanar and whereby cooperatively constitute a light output surface of the backlight module.

Abstract: An exemplary billboard includes a backlight module, a light transmissive canvas, a pattern layer and a light converging layer. The light transmissive canvas is adjacent to the backlight module. The light transmissive canvas includes a first surface facing the backlight module and a second surface opposite to the first surface. The pattern layer is formed on the second surface. The light converging layer covers the pattern layer and comprises a plurality of microstructures formed thereon distal from the light transmissive canvas.

Abstract: An exemplary billboard includes a backlight module, a light transmissive canvas, a pattern layer and a light converging layer. The light transmissive canvas is adjacent to the backlight module. The light transmissive canvas includes a first surface facing the backlight module and a second surface opposite to the first surface. The pattern layer is formed on the second surface. The light converging layer covers the pattern layer and comprises a plurality of microstructures formed thereon distal from the light transmissive canvas.

Abstract: A lighting apparatus includes a reflector, a light source, and a lens unit. The reflector has an open side, and a reflective surface that extends from a periphery of the open side and that defines a compartment. The light source is disposed in the compartment and emits light toward the reflective surface. The reflective surface reflects the light from the light source towards the open side. The lens unit is disposed to close the open side and permits passage of the light reflected by the reflective surface therethrough. The lens unit includes a central lens portion, and first and second side lens portions respectively disposed on two sides of the central lens portion. The central lens portion and the first and second side lens portions are Fresnel lenses, and are configured to redirect the light passing therethrough to result in rectangularly-distributed illumination outwardly of the lighting apparatus.

Abstract: An exemplary light source module includes a plurality of light emitting units and a light pervious paste. Each light emitting unit includes a light guide plate and a light source optically coupled to the light guide plate. The light guide plate includes a bottom surface, a light emitting surface opposite to the bottom surface, and a plurality of side surfaces interconnected between the bottom surface and the light emitting surface. The light pervious paste is interconnected between two adjacent side surfaces of two neighboring light guide plates.

Abstract: A backlight module (100) includes a light source (120) for emitting light therefrom, and a light guide plate (110). The light guide plate includes a light exit surface (111), a bottom surface (112) opposite to the light exit surface, a receiving hole (113) defined in the bottom surface with the light source received therein, a first reflecting surface (115) in the receiving hole facing away from the light exit surface and configured for reflecting the light emitted from the light source, a light incidence surface (116) in the receiving hole, a recess (114) defined in the bottom surface, and a second reflecting surface (117) arranged in the recess. The second reflecting surface faces toward the light exit surface and the first reflecting surface. The second reflecting surface is configured for directing the reflected light from the first reflecting surface to the light exit surface.

Abstract: A light emitting diode illuminator includes a reflecting shell (120), a light emitting diode light source (140) and a transparent cover (160). The reflecting shell includes a plurality of sequentially connected hollow tapered bodies (122, 124) having different taper angles. The tapered bodies cooperatively form a receiving space (123). The light source is installed at an end of the receiving space. The transparent cover is disposed at an opposite end of the reflecting shell away from to the light source and configured for directing light emitted from the light source out from the light emitting diode illuminator.

Abstract: A backlight module (300) includes a plurality of illumination devices (100). Each of the illumination devices includes a light guide block (120) and a point light source (140) optically coupled with the light guide block. The light guide block includes a light exit surface (121), a bottom surface (123) opposite to the light exit surface, and a tapered portion (122) located between the light exit surface and the bottom surface. The bottom surface has a receiving hole (1232) formed therein. The tapered portion includes an outside surface (1221) and a prism array (1224) formed on the outside surface. The point light source is secured in the receiving hole. The plurality of illumination devices are joined with one another and the light exit surfaces of light guide blocks are substantially coplanar and whereby cooperatively constitute a light output surface of the backlight module.

Abstract: A diffusion plate is used in a concentrator for solar light. By the diffusion plate, solar beams is evenly distributed on a solar cell. As a result, the whole solar cell can evenly receives the solar beams for energy transformation.

Abstract: A fingerprint ID system providing function of compressed volume of the fingerprint ID system is comprised of adding a reflection device group between fingerprint plane of the device pervious to light and imaging plane of an image sensor; and the device pervious to light and a flat reflection plane group is integrated into one device for reducing the size of the fingerprint ID system and significantly upgrading automated precision assembly and easier alignment of devices to effectively reduce production cost and shorten production cycle.