A dental light comprises at least one light emitting diode light source configured to produce a light beam and at least one collimating lens system situated to receive the light beam. The collimating lens system is configured to collect and collimate the light beam. The collimating lens system can additionally modify the beam through controlled diffusion or shape the beam using an aperture.

The present invention relates to a vehicle turn indicator luminous device (1) comprising: an optical element (10) having a controlled caustic generator surface (12) so as to propagate a pattern over a usable range, a mounting part (2) on which is intended to be mounted a beam generator (3) of rays incident on said generator surface,
the optical element being such that the propagated pattern is projected onto a target surface, visible from the exterior of the lighting device and situated in the usable range.

Provided is an illumination device capable of displaying a predetermined design (for example, a logo mark) without using a design film. An illumination device 1 is intended for displaying a predetermined design, and includes: an LED 3; a condenser lens 4 that forms a secondary light source using light emitted from the LED 3; an emission surface 5b from which the secondary light source is emitted; and an optical lens 7 on which the emitted secondary light source is made incident and which has a focal point on the secondary light source. At least one three-dimensional shape of a convex part corresponding to the design and a concave part corresponding to the design is formed on the emission surface 5b.

In one aspect, a lens comprises a light receiving side comprising grooves for receiving light emitting diodes, the grooves defined by refractive walls. The lens also comprises a light extraction side opposite the light receiving side, the light extraction side comprising refractive extraction surfaces diverging light from a central axis of the lens. In some embodiments, the refractive walls of the grooves work in conjunction with the refractive extraction surfaces to diverge light from the central axis of the lens. In some embodiments, luminaire comprises an array of light emitting diodes; and the lens positioned over the array of light emitting diodes.

A lighting apparatus includes a housing. The housing have a first portion and a second portion. The first portion has a first curving angle, and the second portion has a second curving angle. The first curving angle has a larger diameter than the second curving angle. A light passing cover has a main section and a frame section. The main section has more light passing than the frame section. The frame section is connected to the housing. A light source assemblage is for emitting light through the light passing cover. A driving module is for transmitting a driving current to the light source assemblage for emitting light. A wing structure is attached to a side edge of the housing, and the wing structure has a heat dissipation device for passing a heat out of the housing.

A luminaire featuring a light diffusing housing assembly with a batwing style catadioptric lens element with properties capable of producing a more uniform field of illumination in concert with a secondary diffusing lens element and optional internal light reflecting elements to maximize light output from a point light source including an LED, or a plurality of individual point light sources including an LED strip or LED array and other source of linear chromatic light or linear illumination sources including a light bar, fluorescent lamp, compressed-gas discharge tube and the like.

An optical member includes a curved portion comprising an optically transmissive material. The enclosure has an outer surface and an inner surface opposite the outer surface. At least one light redirection feature protrudes from the inner surface. At least one indentation defined on the outer surface is configured to refract light.

A structured light generator includes a light source configured to emit light, and a first meta optical device including a first metasurface including nanostructures having sub-wavelength dimensions that are less than a wavelength of the light emitted from the light source, the first metasurface being configured to form a distribution of light rays from the light emitted from the light source to thereby radiate structured light.

An illumination device configured to illuminate an imaging target, an image of which is to be captured by a camera, provided with a current adjusting device configured to adjust a current flowing through the LEDs of four LED-mounted boards on which many of the LEDs are mounted, wherein the four LED-mounted boards are arranged in a four-sided shape centered around the light axis of the camera as viewed from the imaging target, and each of the LED-mounted boards is inclined at a specified angle so that the LEDs of the LED-mounted boards face the imaging target. The current adjusting device is configured to divide an LED-mounted area of each of the LED-mounted boards into multiple illumination areas and to individually adjust the current flowing to the LEDs of each of the LED-mounted boards for each of the multiple illumination areas.

An optic converts wavelength of light from a light source. The optic includes a first substrate and a second substrate. The first substrate includes a fluorescent material substrate. The second substrate supports the first substrate. The second substrate includes a translucent substrate to receive the light from the light source through the first substrate. The translucent substrate has an oriented polycrystalline structure to have a crystalline anisotropy in refractive index.