A light source device includes a light source device includes a first light source configured to emit first light, and a first lens that includes a first surface on which the first light having a first optical axis is incident and a second surface from which a second light having a second optical axis is emitted. An intensity of the first light has a first value on the first optical axis of the first light.

A light source device includes: a light source having an upper surface including a light-emitting surface, the light source including a plurality of light-emitting parts arranged in a two-dimensional array; a lens located above and spaced apart from the light-emitting surface of the light source, wherein the lens includes an optically functional part, and a flange part located along an outer periphery of the optically functional part; and a support part formed of a light-shielding member and configured to support at least the flange part of the lens.

A light source device includes: a light source having an upper surface including a light-emitting surface, the light source including a plurality of light-emitting parts arranged in a two-dimensional array; a lens located above and spaced apart from the light-emitting surface of the light source, wherein the lens includes an optically functional part, and a flange part located along an outer periphery of the optically functional part; and a support part formed of a light-shielding member and configured to support at least the flange part of the lens.

The utility model discloses a projecting device for generating a light effect of a galactic starry sky, including: a light-emitting assembly including at least one first incoherent light source and at least one first condensing lens, the first condensing lens being arranged on an illuminating surface of the first incoherent light source; a film assembly including a film sheet provided with a galactic starry sky pattern, the film sheet being arranged on the other side of the first condensing lens relative to the first incoherent light source; and an imaging assembly including at least three lenses, the three lenses being an imaging lens, an adjusting lens, and a wide-angle lens arranged sequentially in a projection direction of the film sheet, respectively. The technical solution of the utility model effectively improves practicality of the projecting device by setting a plurality of functional lenses.

Provided is a sunlight lighting system used in a greenhouse or a plant factory. The sunlight lighting system converts sunlight into light with a stable illumination direction and a controllable illumination intensity by means of a combination of a controller, a light condenser, a main driving mechanism and an illuminator, so that the sunlight lighting system meets lighting requirements of high-density stereoscopic cultivation frames. A supporting greenhouse is further comprised, where a facade or a top is provided with a light through hole. A main optical axis of the sunlight lighting system passes through the light through hole. A supporting lighting method is further comprised, which can obtain a better lighting effect with fewer steps.

A LED light with built-in Air flow device has AC-to-DC circuit to get DC current to supply power to LED or LEDs and-to charge inside rechargeable batteries and to the inside air flow related device or other product(s). The LED light connect IC and control circuit to make setting, changing, adjust of the said at least one of (A) LED(s) colors, brightness, on-off, duration, cycles, frequency, sequential, flashing, color changing, color selection, auto changing, or other LED light effects, (B) Air flow related parts to get desired speed of rotating fan or blade, on-off, duration, timer, countdown timer, or other desired air flow related function(s); by at least one of (1) trigger system, (2) switch, (3) sensor, (4) motion or moving or radar sensor, (5) IR or RF remote control system, (6) power fail sensor, (7) built-in Auto-Off-On or multiple selection positions switch, (8) other related LED or air flow or air-freshener or fragrance or essential oil diffusor parts or accessories; wherein the LED light connect with (i) AC power source by prongs with or without folding features, (ii) DC power from at least one outside transformer, power bank, DC power from cigarette-plug, USB related DC power source, DC power storage device, solar module, or DC generator.

A LED light with built-in Air flow device has AC-to-DC circuit to get DC current to supply power to LED or LEDs and-to charge inside rechargeable batteries and to the inside air flow related device or other product(s). The LED light connect IC and control circuit to make setting, changing, adjust of the said at least one of (A) LED(s) colors, brightness, on-off, duration, cycles, frequency, sequential, flashing, color changing, color selection, auto changing, or other LED light effects, (B) Air flow related parts to get desired speed of rotating fan or blade, on-off, duration, timer, countdown timer, or other desired air flow related function(s); by at least one of (1) trigger system, (2) switch, (3) sensor, (4) motion or moving or radar sensor, (5) IR or RF remote control system, (6) power fail sensor, (7) built-in Auto-Off-On or multiple selection positions switch, (8) other related LED or air flow or air-freshener or fragrance or essential oil diffusor parts or accessories; wherein the LED light connect with (i) AC power source by prongs with or without folding features, (ii) DC power from at least one outside transformer, power bank, DC power from cigarette-plug, USB related DC power source, DC power storage device, solar module, or DC generator.

To protect observer's eyes while forming a clear illumination pattern on a desired region to be illuminated. An illumination device includes a light source that emits coherent light, a collimating optical system that enlarges and collimates a beam diameter of the coherent light emitted from the light source, and a diffractive optical element that diffracts the coherent light collimated by the collimating optical system into a predetermined diffusion angle space. The diffractive optical element has a plurality of element diffractive optical portions and has a function to illuminate the region to be illuminated defined at a predetermined position and having predetermined size and shape to form the desired illumination pattern. Each of the plurality of element diffractive optical portions has a function to illuminate at least a part of the region to be illuminated, and diffractive characteristics of the element diffractive optical portions are different from each other.

A light guide is provided. The light guide includes a planar body with a first light receiving surface, a light transmission region in optical communication with the first light receiving surface, and an aperture having an inner circumferential wall defining a light emission region, the inner circumferential wall having a plurality of vertically extending flutes. Substantially all light received at the light receiving surface internally reflects through the transmission region before extraction at the emission region. A luminaire is also provided. The luminaire includes a housing, a light guide as described herein, and a plurality of point light sources in optical communication with the light receiving surface of the light guide.

Lighting controller including control system having first control facility and second control facility. First and second control facilities respectively are for controlling first and second visible-light sources including first and second pluralities of semiconductor light-emitting devices spaced apart from and along longitudinal axis. First and second visible-light sources respectively are positioned for directing first and second beams of first and second visible-light emissions from first and second pluralities of semiconductor light-emitting devices in first and second beam directions. First and second control facilities respectively are programmed for controlling first and second intensities of first and second beams of first and second visible-light emissions. Control system is programmed for modulating first intensity of first beam and second intensity of second beam in manner for causing first and second beams of first and second visible-light emissions to collectively emulate progression of ambient sunlight. Lighting systems and lighting control methods.