Patent
Light Fixture With Background Display Using Diffuse Pixels Between Nondiffuse Light Sources
Thomas Vinther,Claus Hansen +1 more
- 12 Apr 2011
12
TL;DR: In this article, an illumination device with a number of light sources arranged in at least two groups of controllable light sources is presented, where the light from each pixel can be diffused at output by passing through diffusive areas of a diffuser cover.
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Abstract: An illumination device with a number of light sources arranged in at least two groups of light sources that are individually controllable. The first group of light sources (205) have light collectors such as internal reflection (TIR) lenses, mixers or other lenses placed over them to collect and convert light of the light sources into a number of light source beams. The second group of light sources (209) is arranged in an array of pixels with light output between the first group of light sources. The array of pixels can be controlled baced on a video signal. The light from each pixel can be diffused at output by passing through diffusive areas of a diffuser cover. The light source beams are not diffused since the light therefrom pass though non-diffuse regions of the diffuser. The illumination device can be included in a moving head light source with a base, a yoke connected rotably to the base and the head connected rotatably to the head. The second group of light sources (703,209) can pass light through light guides or light pipes (713a) and have an output section (717a-718b) between at least two light source beams.
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Citations
Patent
Illumination device with spinning zoom lens
Jesper Kjeldsen,Nina Kildeby,Peter Skytte Christoffersen,Carsten Dalsgaard,Aleksander Henrik Von Preyss +4 more
- 25 Sep 2014
TL;DR: In this article, an illumination device consisting of a number of light sources arranged in at least a first group and in a second group, where each group is individually controllable, is described.
19
Patent
Illumination device with multi-layered heat sink
Jens Søren Kjaer,Dennis Jørgensen +1 more
- 08 Jun 2012
TL;DR: In this article, an illumination device where a number of light sources are arranged on a heat sink and adapted to emit light in substantially the same direction is described. But the present device is not suitable for outdoor illumination.
13
Patent
Optical stack for switchable directional display
Jonathan Harrold,Michael G. Robinson,Graham John Woodgate +2 more
- 16 Jul 2019
TL;DR: In this article, the authors proposed a privacy display consisting of a spatial light modulator and a compensated switchable guest-host liquid crystal retarder arranged between first and second polarisers arranged in series with the spatial modulator, which reduced the visibility of the display to off-axis snoopers by means of luminance reduction over a wide polar field.
11
Patent
Moving head light fixture with illuminating spherical shaped head and yoke
Rasmussen Niels Jorgen
- 09 Jul 2019
TL;DR: In this article, a moving head light fixture consisting of a base, a yoke and a head is described, where the head is rotated around a head axis in relation to the yoke.
1
References
Patent
Light emitting diode (LED) picture element
Matthew Ward
- 24 Oct 2003
TL;DR: A picture element lamp (302) is disclosed that mixes light from LEDs in a light guide (404), which expands the perceived light source and can redirect the light toward viewing locations as mentioned in this paper.
120
Patent
Methods and apparatus for providing led-based spotlight illumination in stage lighting applications
Brian Chemel,Michael Keenan Blackwell,Colin Piepgras,John Warwick +3 more
- 05 Sep 2008
TL;DR: In this paper, a modular lighting fixture (300) has an essentially cylindrically-shaped housing (320) including first openings (325) for providing an air path through the lighting fixture.
101
Patent
Lighting apparatus with adjustable lenses or filters
Rudy G. Pohlert,Pat Grosswendt,Kevin C. Baxter,Ken Fisher +3 more
- 18 Apr 2006
TL;DR: A lighting apparatus comprises a light panel having a panel frame, and a plurality of LEDs or other light elements secured to the panel frame as mentioned in this paper, which can be adjusted in distance from the light elements, by for example moving the lenses/filters into different slot positions of the frame, to alter characteristics of the emitted light.
94
Patent
Illumination apparatus and image projection apparatus
Imade Shinichi
- 17 Oct 2003
TL;DR: In this paper, a plurality of LEDs are disposed so as to be set in array on an illuminant substrate and have light-emitting surfaces radiating diffused light, two of light guiding rod members are used to guide the light to an objective illumination region, a rotating motor is used to drive the light guiding rods members around the center of the circumference serving as a rotation center, and lighting control means including a lightemitting timing control circuit, and an LED driving control circuit.
92
Patent
Illuminating device and liquid crystal display device
Yuhsaku Ajichi,Takeshi Masuda +1 more
- 25 Jul 2008
TL;DR: In this article, a tandem type backlight including a plurality of light-emitting units (11) including at least one point light source (5) and a light guide plate (7) was proposed.
65