An interference lens and a projection ambient lamp are provided. The interference lens includes: an interference sheet with a first surface and a second surface opposite to the first surface, the first surface being a rough surface; and a reflective film provided at the interference sheet; wherein light is reflected by the reflective film to form an interference pattern. The projection ambient lamp includes the foregoing interference lens, a light source and a focusing lens; light emitted from the light source passes through the interference lens and is reflected by the reflective film to form an interference pattern, which is focused by the focusing lens and projected on a medium. The present disclosure realizes simplification of the structure by providing a reflective film at the interference lens, hence utilization of light energy is higher, power consumption is lower, manufacturing cost is lower, and projection effect is better.

A recessed enclosure (100) for a light source (01). The recessed enclosure (100) includes a housing (102) having a mounting fixture for fitting a light source (01) thereon. A lid frame (104) has an opening (106) configured thereon emitting light from the light source (01). The lid frame (104) includes a first gasket (108) provided in a first groove (105), configured on the lid frame (102). A transparent body (110) is nested with the first gasket (108) for reflecting light emitted by the light source (01). Retainer clips (112) are provided along the longitudinal edges of the first groove (105) to compress and seal the first gasket (108) to prevent ingress of dust and moisture through the opening (106). Three fasteners (114) securely attach the lid frame (104) to the housing (102).

A reflector and a backlight having the same are provided. The reflector is provided with a special-shaped assembly hole. The special-shaped assembly hole includes a first included angle and a second included angle opposite to each other. Two sides forming the first included angle are respectively a first upper side and a second upper side, and two sides forming the second included angle are respectively a first lower side and a second lower side. The special-shaped assembly hole further includes a first arc-shaped side and a second arc-shaped side opposite to each other. The special-shaped assembly hole further includes a first limiting side, a second limiting side, a third limiting side, and a fourth limiting side.

A fluorescent plate including a fluorescent phase which emits fluorescence by excitation light, and a plurality of voids, wherein, in a cross section of the fluorescent plate including cross sections of the voids, voids having an equivalent circle diameter of 0.4 micrometers or greater and 50 micrometers or smaller have a standard deviation in equivalent circle diameter of 1.5 or less.

A fluorescent plate including a fluorescent phase which emits fluorescence by excitation light, and a plurality of voids, wherein, in a cross section of the fluorescent plate including cross sections of the voids, voids having an equivalent circle diameter of 0.4 micrometers or greater and 50 micrometers or smaller have a standard deviation in equivalent circle diameter of 1.5 or less.

A lighting device according to an embodiment includes a sensor, a substrate disposed on the sensor and including an electrode pattern, a light source disposed on the substrate and electrically connected to the electrode pattern, a resin layer disposed on the substrate, and a reflective layer disposed between the substrate and the resin layer, and the substrate may include a first region overlapping the sensor in a first direction perpendicular to an upper surface of the substrate, a second region surrounding the first region, the light source may be disposed on the second region, the plurality of reflective pattern groups may be disposed on the first region, and the sensor may not overlap the light source and the electrode pattern in the first direction.

A lighting device according to an embodiment includes a sensor, a substrate disposed on the sensor and including an electrode pattern, a light source disposed on the substrate and electrically connected to the electrode pattern, a resin layer disposed on the substrate, and a reflective layer disposed between the substrate and the resin layer, and the substrate may include a first region overlapping the sensor in a first direction perpendicular to an upper surface of the substrate, a second region surrounding the first region, the light source may be disposed on the second region, the plurality of reflective pattern groups may be disposed on the first region, and the sensor may not overlap the light source and the electrode pattern in the first direction.

A backlight module includes a substrate, light-emitting elements, circuit elements and a reflective sheet. The light-emitting elements are bonded onto the substrate. The circuit elements are bonded onto the substrate and electrically connected to the light-emitting elements. At least four of the light-emitting elements are disposed around one of the circuit elements. The reflective sheet is disposed on the substrate and has first openings exposing the light-emitting elements and protrusions. The protrusions corresponds to the circuit elements and cover the circuit elements. One of the protrusions has an opening formed of two crossing slits. Extending directions of the two crossing slits do not cross the at least four of the light-emitting elements. The one of the protrusions corresponds to the one of the circuit elements. The at least four of the light-emitting elements are closer to the one of the circuit elements than other of the light-emitting elements.

A backlight module includes a substrate, light-emitting elements, circuit elements and a reflective sheet. The light-emitting elements are bonded onto the substrate. The circuit elements are bonded onto the substrate and electrically connected to the light-emitting elements. At least four of the light-emitting elements are disposed around one of the circuit elements. The reflective sheet is disposed on the substrate and has first openings exposing the light-emitting elements and protrusions. The protrusions corresponds to the circuit elements and cover the circuit elements. One of the protrusions has an opening formed of two crossing slits. Extending directions of the two crossing slits do not cross the at least four of the light-emitting elements. The one of the protrusions corresponds to the one of the circuit elements. The at least four of the light-emitting elements are closer to the one of the circuit elements than other of the light-emitting elements.

There is presented a lighting device comprising: several light-emitting filaments (15, 15′) with solid-state light sources and a circuit board (10) with first and second electrically conductive tracks (13, 14) following first and second paths, respectively. Each light-emitting filament (15, 15′) comprises a first electrical contact (19, 19′) electrically connected to the first track (13) at a first point on the first path, and a second electrical contact (20, 20′) electrically connected to the second track (14) at a second point on the second path. The first and second points associated with each light-emitting filament (15, 15′) are arranged on an axis (A) which is non-perpendicular to a tangent (T.sub.1) to the first path at the first point and to a tangent (T.sub.2) to the second path at the second point. The lighting device may be adapted to emit light from what appears to be a surface according to an observer.