A light fixture with redundancy protection includes a light head with a light source inside, a driving mechanism for driving the light head to change the projection direction, an angle detector for detecting the projection direction of the light head, and an original micro-control unit and a redundancy micro-control unit both being coupled to a controller. The original micro-control unit serves to receive an angle control signal from the controller and forward same to the driving mechanism, the redundancy micro-control unit serves to receive the angle control signal from the original micro-control unit or the controller, and both the original micro-control unit and the redundancy micro-control unit are coupled to the angle detector. A safety protection unit coupled to the controller is further included which is for conducting safety protection actions according to a feedback signal from the original micro-control unit or from the redundancy micro-control unit.

A light-emitting module includes: first and second light-emitting devices each including semiconductor laser elements that emit laser beams with an interval in a slow axis direction of the laser beams; a first optical unit that includes one or more first reflective members provided with reflective surfaces on which laser beams are incident and that makes the interval of the laser beams smaller and emits the laser beams; a second optical unit that includes second reflective members provided with reflective surfaces on which laser beams are incident and that reflects, two times or more, laser beams emitted with an interval in a fast axis direction and emits the laser beams with a smaller interval and with a smaller width in the fast axis direction of the laser beams; and a condenser lens that gathers laser beams having traveled through the first optical unit and the second optical unit.

A light source device includes a semiconductor light-emitting device which emits coherent excitation light, and a wavelength conversion element which is spaced from the semiconductor light-emitting device, generates fluorescence by converting the wavelength of the excitation light emitted from semiconductor light-emitting device, and generates scattered light by scattering the excitation light. The wavelength conversion element includes a support member, and a wavelength converter disposed on the support member. The wavelength converter includes a first wavelength converter, and a second wavelength converter which is disposed around the first wavelength converter to surround the first wavelength converter in a top view of the surface of the support member on which the wavelength converter is disposed. The ratio of the intensity of fluorescence to that of scattered light is lower in the second wavelength converter than in the first wavelength converter.

A method of manufacturing a light-emitting device includes: providing a light source including a first substrate and a light-emitting element coupled to the first substrate; and after the providing of the light source, forming one or more positioning holes in the first substrate at locations spaced apart from a light-emitting part of the light source by predetermined distances in a top plan view.

A laser light source comprises a laser source and a ceramic phosphor tile having a light entry face for receiving laser light from the laser source for laser pumping by the laser light. A reflective coating is formed over a face opposite the light entry face. A metal layer is provided between a heat sink and the ceramic phosphor tile, wherein the metal layer has a melting point below 120? C. The metal layer thus becomes a liquid during operating temperatures, and this reduced strain on the phosphor layer while maintaining thermal contact.

The invention provides a light generating device (1000) configured to generate device light (1001), wherein the light generating device (1000) comprises: a first light source (110) configured to generate one or more of UV and blue first light source light (111), wherein the first light source (110) is a first laser light source (10); a second light source (120) configured to generated green second light source light (121), wherein the second light source (120) is a second laser light source (20); a third light source (130) configured to generate red third light source light (131), wherein the third light source (130) is a third laser light source (30); a fourth light source (140) configured to generate blue fourth light source light (141), wherein the fourth light source (140) is a fourth laser light source (40); a first luminescent material (210) configured to convert at least part of the first light source light (111) into first luminescent material light (211) having an emission band having wavelengths in one or more of (a) the green spectral wavelength range and (b) the yellow spectral wavelength range, wherein the first luminescent material (210) comprises a luminescent material of the type A3B5O12:Ce, wherein A comprises one or more of Y, La, Gd, Tb and Lu, and wherein B comprises one or more of Al, Ga, In and Sc; an optical element (430) configured to combine (i) optionally unconverted first light source light (111), (ii) the second light source light (121), (iii) the third light source light (131), (iv) the fourth light source light (141), and (v) the first luminescent material light (211), to provide device light (1001), wherein the light generating device (1000) is configured to provide in an operational mode white device light (1001) comprising at least the luminescent material light (211) and the fourth light source light (141); and a control system (300) configured to control one or more of the light sources (110, 120, 130, 140).

A wavelength conversion member includes three or more light-emitting portions, and two or more light shielding layers. Each of the three or more light-emitting portions has a phosphor, is separated from each other, and is disposed to be aligned in a first direction. Each of the two or more light shielding layers is disposed between the two light-emitting portions adjacent to each other. The light-emitting portion and the light shielding layer are alternately aligned in the first direction. In the first direction, a length of each of the light-emitting portions is in a range of 0.3 mm to 2.0 mm. An interval in the first direction between the two light-emitting portions adjacent to each other is in a range of 0.1 mm to 2.0 mm.

Weeding apparatus includes a concentrator assembly having a two-dimensional array of discrete semiconductor light emitters (2), e.g. laser diodes or LEDs. A primary optical stage (3) includes collimating lenses (4) each corresponding to one of the semiconductor light emitters (2) to collimate their light and produce a compound collimated beam. A secondary optical stage (5) incorporates a lens system arranged to convert the collimated beam into a convergent beam to concentrate the emitted light at a focal position. The concentrator assembly (1) may be incorporated in a weeding unit with a mechanical drive arrangement to direct the focal position onto a selected plant. A number of such weeding units maybe incorporated in a weeding module along with a control system. The weeding modules can be carried by an autonomous rover.

A shared optic assembly for combined flood and dot illumination modules is disclosed. The shared optic assembly includes a first high-powered VCSEL element for providing a flood beam and a second high-powered VCSEL element for providing a dot beam, where both the first and second VCSEL elements share the same optics and are incorporated onto the same module for space savings.

The present disclosure discloses a laser lamp module capable of active heat dissipation, including a laser lamp module body, a glass sheet, a tri-color laser module, and a fan. The laser lamp module body includes a front casing, a housing, a rear casing, an internal thread interface, an air inlet, and an external thread interface. The air inlet is connected to one side of the housing. The air inlet is specifically hidden at the position where the housing and the front casing are connected, which can provide an effective waterproof effect. According to the present disclosure, a heat dissipation function is added to the laser lamp with a pattern effect, which is simple in structure and reasonable in design. By ways of the design and cooperation of the air inlet and the fan, the heat produced by working in the housing can be removed in time.