A waterproof light bulb assembly implements a plurality of light emitting diodes (LEDs) for use in light fixture in an outdoor or wet environment. The light bulb assembly includes a clear plastic bulb shell which used a threaded portion to mate to a bulb cap. The bulb cap includes a passage to receive a light emitting assembly having a direct current (DC) connector. The light emitting assembly includes the plurality of LEDs and a printed circuit board. The light bulb assembly also includes a lens assembly that is located above and cover the light emitting assembly. The lens assembly includes lens in a shape of upside-down pyramid seated on a top of a hollow cylinder. The hollow cylinder is inserted into the bulb cap and covers the light emitting assembly. The lens is configured to reflect and refract a light beam emitted from the light emitting assembly.

A planar illumination device of an embodiment includes a substrate, a first optical element, and a second optical element. A plurality of light sources are two dimensionally disposed at the substrate. The first optical element is disposed at an emission side of the plurality of light sources, and condenses light emitted from the plurality of light sources. The second optical element inclines a light distribution of the light condensed by the first optical element with respect to the first axial direction.

A waterproof light bulb assembly implements a plurality of light emitting diodes (LEDs) for use in light fixture in an outdoor or wet environment. The light bulb assembly includes a clear plastic bulb shell which used a threaded portion to mate to a bulb cap. The bulb cap includes a passage to receive a light emitting assembly having a direct current (DC) connector. The light emitting assembly includes the plurality of LEDs and a printed circuit board. The light bulb assembly also includes a lens assembly that is located above and cover the light emitting assembly. The lens assembly includes lens in a shape of upside-down pyramid seated on a top of a hollow cylinder. The hollow cylinder is inserted into the bulb cap and covers the light emitting assembly. The lens is configured to reflect and refract a light beam emitted from the light emitting assembly.

A backlight module, including a reflective plate and a plurality of light-emitting units. The reflective plate is provided with a reflective side. The light-emitting units are provided on the reflective side. The reflective plate includes a substrate and a reflective layer. The reflective layer covers the substrate. The reflective side is divided by the reflective layer into a first region and a second region surrounding the first region, and the reflectivity of the second region is greater than that of the first region.

The lighting device disclosed at an embodiment of the invention comprises a substrate; a light source disposed on the substrate; a resin layer disposed on the substrate; and an optical member disposed on the resin layer, wherein the optical member includes a base layer, a pattern layer disposed on the base layer, and a reflective layer disposed on the pattern layer, and a pattern of the pattern layer includes a first surface and a second surface having a predetermined angle with respect to the first surface, the reflective layer is disposed on the first surface, and a difference between a intensity of light emitted to an outside through the first surface and the second surface may be 5 times or more.

The invention provides an illumination system arranged to illuminate a space for rearing a flock of birds, wherein the illumination system comprises: a visible light source configured to emit visible light; an ultraviolet light source configured to emit ultraviolet light; a controller configured to: (i) entrain a circadian rhythm of the flock of birds by controlling the visible light source to emit the visible light for a predetermined period of light, and not to emit the visible light for a predetermined period of dark; (ii) control the ultraviolet light source to emit the ultraviolet light at an ultraviolet light intensity for at least one subperiod within the predetermined period of dark, wherein the ultraviolet light comprises a peak wavelength within the UV-A wavelength range.

The present disclosure discloses a vacuum cleaner head. The vacuum cleaner head of the present disclosure includes a lamp disposed on a front side of the vacuum cleaner head, the lamp includes a light source and a protective cover disposed on an outer side of the light source and further includes a lampshade disposed on a front side of the light source, the lampshade is disposed on the protective cover, the lampshade includes a first light gathering portion, one lampshade is disposed corresponding to each light source, and the quantity of values of curvature of an outer surface of each first light gathering portion is greater than or equal to 1. By utilizing the vacuum cleaner head of the present disclosure, a user can conveniently and more clearly observe dust on the surface to be cleaned within a large range.

The present disclosure provides a light-emitting substrate, a light-emitting apparatus and a lighting apparatus. The light-emitting substrate includes: a base substrate including a plurality of light-emitting regions and a plurality of non-light-emitting regions, where the plurality of light-emitting regions are arranged in an array; a plurality of light-emitting units located in the plurality of light-emitting regions, respectively, where in each light-emitting region, more than one light-emitting unit is arranged in an array; a covering layer covering the light-emitting region and the non-light-emitting region; and a plurality of support structures arranged in an array and evenly distributed in the plurality of non-light-emitting regions and/or between the plurality of light-emitting units, where the support structures are used to support the covering layer.

A lighting assembly including a plurality of lighting sources or modules arranged concentrically about an inner circumference of the lighting device, wherein the plurality of lighting sources or modules emit light in at least one of a plurality of wavelength ranges (UV, visible (e.g., blue, green, yellow, orange, red, white, etc.), IR) onto a lighting director device that redirects the emitted light toward a lens system, wherein optical characteristics of the lens system being selected to focus the light onto a viewing point a known distance from the lighting assembly. Further disclosed is a passthrough within the lighting director device that allows light positioned on a base of the lighting device to pass through the lighting director.

An LED bulb includes a bulb body, with a first set of components composed of an NPR material, and a second set of components composed of a PPR material. The first set of components include thermal encapsulants, thermal pottants, a heat sink, thermal interface materials, and LED chip encapsulants. The second set of components include a socket, a base, an LED driver, conformal coating, adhesives, reflector materials, an LED module, LEDs, primary optics, and secondary optics. The incorporation of NPR materials into LED bulb components can provide various advantages over LED bulbs that include only positive Poisson's ratio (PPR) materials. For example, NPR materials can facilitate improved heat dissipation from, and/or cooling of, integrated components of LED bulbs, among other benefits.