A light source module includes a light source, a light guide plate on the light source and including at least one recess portion in an upper surface thereof, and a filter sheet on an upper surface of the light guide plate and having a pattern. The pattern may be configured to partially reflect and partially transmit light emitted from the light source through the light guide plate.

A light source module includes a light source, a light guide plate on the light source and including at least one recess portion in an upper surface thereof, and a filter sheet on an upper surface of the light guide plate and having a pattern. The pattern may be configured to partially reflect and partially transmit light emitted from the light source through the light guide plate.

Techniques, devices and materials for light source devices that convert excitation light into different light via wavelength conversion materials. One example of a light source includes an excitation light source; a wavelength conversion material that absorbs light from the excitation light source and emits a longer wavelength light; and a layer of a transparent material that has plural optical structures in contact to or in close proximity to the wavelength conversion material to receive the emitted light from the wavelength conversion material and to modify the received light to produce output light with a desired spatial pattern associated with the plural optical structures.

An image display apparatus according to one embodiment of the present disclosure includes: an output unit including a light source and outputting projection light outputted from the light source along a predetermined axis; an irradiation target member to be irradiated with the projection light; a first optical member disposed opposite to the output unit along the predetermined axis and controlling an incident angle of the projection light to be incident on the irradiation target member; and a second optical member included in the output unit and adjusting an illumination range of the projection light to be incident on the first optical member such that the illumination range has an aspect ratio of substantially the same as an aspect ratio of an outer shape of the first optical member.

Apparatus and methods for lighting. The apparatus may include an LED light source. The light source may be disposed in housing. The apparatus may include a circuit. The circuit may be configured to cause the LED light source to emit light at: a first intensity; and a second intensity that is different from the first intensity. The apparatus may include a mechanical power state selector. A user may use the power state selector to select between LED light sources that are arranged to illuminate in different directions. The apparatus may include a CCT state selector. A user may use the CCT state selector to select a CCT for one or more LED light sources. The CCT may be produced by combining light from one or more LEDs of different CCTs.

Apparatus and methods for lighting. The apparatus may include an LED light source. The light source may be disposed in housing. The apparatus may include a circuit. The circuit may be configured to cause the LED light source to emit light at: a first intensity; and a second intensity that is different from the first intensity. The apparatus may include a mechanical power state selector. A user may use the power state selector to select between LED light sources that are arranged to illuminate in different directions. The apparatus may include a CCT state selector. A user may use the CCT state selector to select a CCT for one or more LED light sources. The CCT may be produced by combining light from one or more LEDs of different CCTs.

A light-emitting device assembly includes a concave optical collector with a cavity, an emitter array of light-emitting elements, a transparent substrate across an open end of the collector, a structured lens, and an angular filter. The emitter array is positioned within the package cavity and emits from its emission surface output light that exits the cavity from the open its end through the substrate, and enables selective activation of and emission from individual elements of the array. The structured lens is formed on or in the substrate, and comprises micro- or nano-structured elements resulting in an effective focal length less than an effective distance between the structured lens and the emission surface. The angular filter is positioned on or in the substrate or on the emission surface and exhibits decreasing transmission or a cutoff angle with increasing angle of incidence.

A biological lighting system to provide temporally- and spatially-modulated photon flux output and spectral power distributions to plants on a circadian and circannual basis, or circadian and life cycle basis, to maximize effective and efficient growth in a horticultural setting. The photon flux or irradiance output and the spectral power distribution are modulated to match circadian and circannual rhythms, with individual or multiple luminaires controlled through one or more controllers. Different lighting spectra can be employed depending on the direction of illumination. The photon flux or irradiance output and the spectral power distribution may be set as best suited for any particular plant species, and the system is also useful for raising animals.

Consumable and replaceable light bulbs that emit white light to provide ambient lighting and also emit UV light for pathogen inactivation. The white light and the UV light may be emitted simultaneously or the light bulb can be controlled to emit the white light and the UV light at separate times. The UV light emitted by the light bulbs has a wavelength and output power that is safe for humans and pets and the UV light inactivates pathogens over relatively prolonged exposure periods. The light bulbs described herein can be used in place of conventional light bulbs, for example in a room of a home, office building or other human occupied space. Humans can remain in the space when the light bulb(s) is on without being harmed by the UV light.

Disclosed are a lighting module, a vehicle lamp and a vehicle. The lighting module includes a plurality of high-beam light sources, a plurality of low-beam light sources, a high-beam optical element and a low-beam optical element. The high-beam optical element includes a plurality of high-beam light guide bodies, which are in one-to-one correspondence with the plurality of high-beam light sources. The low-beam optical element includes at least one low-beam light guide body, the plurality of low-beam light sources are disposed at a rear end of the at least one low-beam light guide body, and a front end of the at least one low-beam light guide body forms a continuous low-beam light emitting surface. The low-beam optical element and the high-beam optical element are disposed one above the other, an upper boundary of the high-beam light emitting surface.