A light-emitting device includes: a light guide that includes (i) a light-transmissive member that is light-transmissive at least in a visible light region and (ii) a light control layer that is disposed on at least a part of a surface of the light-transmissive member; and a light source that emits light toward at least one end surface of the light-transmissive member. The light control layer has reflected-wavelength selectivity that makes a wavelength of reflected light dependent on an incident angle of incident light.

In one aspect, an exterior lighting insect zapper includes a photosensor configured to sense an amount of light for turning on or off an exterior light and an insect zapper coupled to the photosensor. The exterior lighting insect zapper also includes a twist-lock plug compatible with a receptacle of an exterior light for a photosensor unit plug, such that the exterior lighting insect zapper can replace existing photosensors of exterior light fixtures.

In one aspect, an exterior lighting insect zapper includes a photosensor configured to sense an amount of light for turning on or off an exterior light and an insect zapper coupled to the photosensor. The exterior lighting insect zapper also includes a twist-lock plug compatible with a receptacle of an exterior light for a photosensor unit plug, such that the exterior lighting insect zapper can replace existing photosensors of exterior light fixtures.

An LED tube lamp comprises a heat-dissipating glass lamp tube, protective film attached to a surface of the glass lamp tube, an LED light strip disposed in the glass lamp tube and two end caps, each of the two end caps coupled to a respective end of the glass lamp tube. The LED light strip comprises a substantially flat LED circuit board and a plurality of LED light sources, the LED circuit board comprises a top surface and a base surface, and the plurality of LED light sources mounted on the top surface and the base surface are directly affixed to a curved inner surface of the glass lamp tube. A non-insulating adhesive layer is disposed between the base surface of the LED circuit board and the curved inner surface of the glass lamp tube and extends along a length of the LED light strip. The LED circuit board comprises a first end electrically connecting to a first connector and a second end electrically connecting to a second connector, wherein the first connector and the second connector are connectable to a light fixture through the end caps. The inner space of the glass lamp tube comprises ambient atmosphere. The plurality of LED light sources emit white light. The diameter of the lamp tube is ⅝ inch or 1 inch and a length of the glass lamp tube is 2 ft, 4 ft or 8 ft.

Reflector assemblies and lighting devices incorporating such reflector assemblies are disclosed and described. The reflector assembly includes a reflector body defining an interior reflective surface that in some embodiments has a shape akin to a compound elliptic paraboloid. One or more LEDs can be maintained relative to the reflector body such that an entirety of a light cone emitted by the LED reflects from the interior reflective surface out to the world as a collimated beam. Lighting devices enable light rays to travel with a greater solid angle from LEDs than traditional in-plane optics. Light from a directional point source with a mounting position that is embedded in reflector body oriented to face an opposing curved mirror wall surface so light rays that are diverging prior to reflecting off the interior reflective surfaced are merged together after the reflective bounce to travel in parallel as a collimated beam.

A reversible LED lamp has a fixed support including first and second plate bodies. One side of the first body is connected to the second; the other is connected to a first limiting member. A rotating support includes a third plate body and rotating support member. One side of the third body is connected to a first rotating portion; the other side is connected to the rotating support member, below the second and third bodies. A side of the rotating support member close to the second body is flush therewith. The plate bodies and rotating support member form a power supply installation space. A light-emitting assembly is in a light source installation space in the rotating support member. When a power supply in the power supply installation space is repaired/replaced, the rotating support is unfolded. The rotating support is rotatable in the fixed support, which has an avoidance groove.

An LED tube lamp comprises a heat-dissipating glass lamp tube, protective film attached to a surface of the glass lamp tube, an LED light strip disposed in the glass lamp tube and two end caps, each of the two end caps coupled to a respective end of the glass lamp tube. The LED light strip comprises a substantially flat LED circuit board and a plurality of LED light sources, the LED circuit board comprises a top surface and a base surface, and the plurality of LED light sources mounted on the top surface and the base surface are directly affixed to a curved inner surface of the glass lamp tube. A non-insulating adhesive layer is disposed between the base surface of the LED circuit board and the curved inner surface of the glass lamp tube and extends along a length of the LED light strip. The LED circuit board comprises a first end electrically connecting to a first connector and a second end electrically connecting to a second connector, wherein the first connector and the second connector are connectable to a light fixture through the end caps. The inner space of the glass lamp tube comprises ambient atmosphere. The plurality of LED light sources emit white light. The diameter of the lamp tube is ⅝ inch or 1 inch and a length of the glass lamp tube is 2 ft, 4 ft or 8 ft.

An optical device including a support mounted on a rotational-drive motor, and a reflective optical component, the support including at least one sleeve coaxial with the rotational-drive axis, of which sleeve one end defines an inlet orifice and which sleeve in its wall includes an opening defining an outlet orifice, and inside which sleeve the reflective optical component is housed in such a way that a beam of light entering via the inlet orifice is reflected by the reflective optical component to exit via the outlet orifice. An optical component mounted and retained in the sleeve as a result of cooperation of shape between it and the wall of said sleeve is also discussed.

Structures, particularly wall and/or pillar structure, comprising a supporting portion and a covering portion for covering the supporting portion, the supporting portion being provided by solid material pieces and at least one string for jamming at least some of the solid material pieces, wherein the covering portion comprises at least one covering device and wherein the string and the covering device are attached to each other.

A light emitting module includes: a first light source comprising a first light emitting element configured to emit first light, and a first wavelength conversion member configured to convert a wavelength of a portion of the first light and to emit second light, such that the first light source is configured to output light that includes the first light and the second light; a first lens on which the light output from the first light source is incident; a drive unit configured to change a distance between the first lens and the first light source so as to change an amount of outgoing second light from the first lens; a second light source configured to output light having a chromaticity that is different from that of the light output from the first light source; and a second lens on which the light output from the second light source is incident.