An exterior aircraft light unit for emitting light of a first wavelength and light of a second wavelength, different from the first wavelength is disclosed. The exterior aircraft light unit has an integrated optical structure, which in turn has a first light source configured to emit the light of the first wavelength, a second light source configured to emit the light of the second wavelength, the second light source being positioned adjacent to the first light source, and an optical element for shaping a light emission distribution of the integrated optical structure. The optical element is arranged with respect to the first light source and the second light source in such a way that it affects both the light of the first wavelength and the light of the second wavelength.

An exterior aircraft light unit for emitting light of a first wavelength and light of a second wavelength, different from the first wavelength is disclosed. The exterior aircraft light unit has an integrated optical structure, which in turn has a first light source configured to emit the light of the first wavelength, a second light source configured to emit the light of the second wavelength, the second light source being positioned adjacent to the first light source, and an optical element for shaping a light emission distribution of the integrated optical structure. The optical element is arranged with respect to the first light source and the second light source in such a way that it affects both the light of the first wavelength and the light of the second wavelength.

An aircraft landing light unit includes a plurality of LEDs, an optical system associated with the plurality of LEDs for shaping a light output of the aircraft landing light unit for illuminating an aircraft environment, a control unit for controlling the plurality of LEDs, and a photo detector arranged for detecting light, emitted by the plurality of LEDs, output via the optical system and reflected by atmospheric haze, such as clouds, fog, rain and snow, wherein the control unit is coupled to the photo detector and is configured to control the plurality of LEDs on the basis of the light detected by the photo detector, thereby adjusting the light output of the aircraft landing light unit to the atmospheric haze.

An aircraft landing light unit includes a plurality of LEDs, an optical system associated with the plurality of LEDs for shaping a light output of the aircraft landing light unit for illuminating an aircraft environment, a control unit for controlling the plurality of LEDs, and a photo detector arranged for detecting light, emitted by the plurality of LEDs, output via the optical system and reflected by atmospheric haze, such as clouds, fog, rain and snow, wherein the control unit is coupled to the photo detector and is configured to control the plurality of LEDs on the basis of the light detected by the photo detector, thereby adjusting the light output of the aircraft landing light unit to the atmospheric haze.

A multiple light high intensity discharge (“HID”) array designed for retrofit aviation application. The present invention provide better light beams, reduces the energy needed to power landing/taxiing lights, and allows for customization of the beam through the depth of the HID bulb.

Apparatus and associated methods relate to determining metrics of water particles in clouds by directing light pulses at a cloud and measuring a peak, a post-peak value and a high-frequency fluctuation of light signals reflected from the cloud. The light pulses include: a first pulse having circularly polarized light of a first wavelength; and a second pulse of a second wavelength. The reflected light signals include: a first reflected light signal having left-hand circular polarization of the first wavelength; a second reflected light signal having right-hand circular polarization of the first wavelength; and a third reflected light signal of the second wavelength. An extinction coefficient and a backscatter coefficient are determined based on the measured peak and post-peak slopes of the first and second reflected light signals. The measured high-frequency fluctuations of the three reflected light signals can be used to calculate cloud particle sizes.

An aircraft lamp includes a variable lamp unit in which an irradiation direction of light by a light source changes; a behavior detection unit that detects behavior of an airframe; and a controller that controls the irradiation direction of the light by the variable lamp unit based on a detection result of the behavior of the airframe.

An aircraft lamp includes a variable lamp unit in which an irradiation direction of light by a light source changes; a behavior detection unit that detects behavior of an airframe; and a controller that controls the irradiation direction of the light by the variable lamp unit based on a detection result of the behavior of the airframe.

An aircraft lamp includes a variable lamp unit in which an irradiation direction of light by a light source changes; a behavior detection unit that detects behavior of an airframe; and a controller that controls the irradiation direction of the light by the variable lamp unit based on a detection result of the behavior of the airframe.

An aircraft lamp includes a variable lamp unit in which an irradiation direction of light by a light source changes; a behavior detection unit that detects behavior of an airframe; and a controller that controls the irradiation direction of the light by the variable lamp unit based on a detection result of the behavior of the airframe.