A short wavelength infrared (SWIR) energy emitting unit, and device having a SWIR emitting unit, for producing SWIR energy from an emission source emitting electromagnetic energy. The SWIR energy unit comprises a phosphor material, an electromagnetic energy blocking member, a substrate for delivering the system or material to an electromagnetic energy emission source, and optionally, an attachment member.

A short wavelength infrared (SWIR) energy emitting unit, and device having a SWIR emitting unit, for producing SWIR energy from an emission source emitting electromagnetic energy. The SWIR energy unit comprises a phosphor material, an electromagnetic energy blocking member, a substrate for delivering the system or material to an electromagnetic energy emission source, and optionally, an attachment member.

A translucent solar module assembly for integration with a greenhouse having a frame with a plurality of roof supports includes a pair of brackets attachable to each of the plurality of roof supports, a bi-facial solar panel attachable to the pair of brackets, and a pair of reflector rails attachable to each of the plurality of roof supports. A dichroic reflector is attachable to the pair of reflector rails.

Provided is a lighting device including a light source for emitting light, a sensor configured to detect infrared radiation from a plurality of locations along a path in the field of view of the sensor, at least one attenuation element arranged between at least one location of the plurality of locations and the sensor so as to attenuate or block infrared radiation emitted from the at least one location before it reaches the sensor, and a controller. The at least one attenuation element is further arranged in relation to the field of view of the sensor for the signal output from the sensor to indicate, when an occupant is moving along the path, a direction of movement of the occupant along the path. The controller is arranged to control the light source based on the direction of movement of the occupant, and a cover plate is arranged between the at least one location of said plurality of locations and the sensor, and also arranged between the at least one location and the light source, wherein the cover plate is transparent or translucent to said visible light, wherein the at least one attenuation element forms part of the cover plate, and wherein outside, or away from, the attenuation element, the cover plate is at least partly transparent to infrared radiation.

A coating composition comprising 6 to 20 alternating layers of SiO.sub.2 and one of ZrO.sub.2 or Nb.sub.2O.sub.5 wherein the thickness of each individual layer is about 70 nm to 200 nm is described. Also described is a substrate comprising a coating on at least a first major side thereof, the coating comprising 6 to 20 alternating layers of SiO.sub.2 and one of ZrO.sub.2 or Nb.sub.2O.sub.5 wherein the thickness of each individual layer is about 70 nm to 200 nm. The substrate can be glass, plastic, or metal. Also disclosed herein are methods of making the coated substrate. The coatings have good optical transparency and NIR reflectivity.

An airport runway light for use as a runway approach light for a runway lighting system, the runway light having a light body with a base configured to support the runway light in a light socket of a runway lighting system, the base having an electrical connection to electrically connect the runway light to the runway lighting system, the light further including one or more output windows wherein the runway light has a high-efficiency infrared source and one or more infrared reflectors to direct the infrared source outwardly through the one or more output windows, the infrared source including a silicon nitride element wherein the infrared source produces virtually no detectable visible light and with much less power consumption.

An airport runway light for use as a runway approach light for a runway lighting system, the runway light having a light body with a base configured to support the runway light in a light socket of a runway lighting system, the base having an electrical connection to electrically connect the runway light to the runway lighting system, the light further including one or more output windows wherein the runway light has a high-efficiency infrared source and one or more infrared reflectors to direct the infrared source outwardly through the one or more output windows, the infrared source including a silicon nitride element wherein the infrared source produces virtually no detectable visible light and with much less power consumption.

An infrared-cut filter (1a) includes a near-infrared reflecting film (20) and an absorbing film (30). The near-infrared reflecting film (20) and the absorbing film (30) have the following features (A) to (E); (A) 700 nm.sup.H.sub.R (0, 70%)<.sup.H.sub.R (0, 20%)770 nm; (B) 650 nm.sup.H.sub.R (40, 70%)<.sup.H.sub.R (40, 20%)720 nm; (C) .sup.H.sub.A (40, 20%)<.sup.H.sub.R (40, 20%); (D) the spectral transmittance of light incident on the absorbing film (30) is 15% or less at .sup.H.sub.R (0, 20%) and .sup.H.sub.R (40, 20%); and (E) an average of the spectral transmittance of light incident on the near-infrared reflecting film (20) and an average of the spectral transmittance of light incident on the absorbing film (30) are 75% or more in the wavelength range of 450 to 600 nm.

A reflector element and a method for manufacturing a reflector element are disclosed. In an embodiment the reflector element includes a plastic substrate and a silver layer arranged on the plastic substrate. The reflector element further includes a first barrier layer arranged on the silver layer, wherein the barrier layer has an at least 15 nm-thick oxide layer and a second barrier layer arranged on the first barrier layer, wherein the barrier layer includes siloxane, and wherein a thickness of the second barrier layer is at least 250 nm and at most 450 nm.

A solar module assembly includes a frame having an upper portion encompassing an area and a mid portion disposed below the upper portion. A plurality of solar panels is arranged in a string, sandwiched between two transparent panes forming a single string panel. The solar panels occupy less than the area of the upper portion. Each of the plurality of solar panels has a pair of opposing edges. A reflector is mounted on the mid portion to reflect light selectively.