Topic
Light switch
About: Light switch is a research topic. Over the lifetime, 325 publications have been published within this topic receiving 6553 citations. The topic is also known as: switch & toggle switch.
Papers published on a yearly basis
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Papers
Patent•
29 Oct 1997
TL;DR: In this article, an interactive fiat-panel display can be built based on a plurality of parallel channel waveguides, which consists of one or more optical waveguiders and mechanical light switches 30.
Abstract: An optical device consists of one or more optical waveguides and mechanical light switches 30 . When a light switch 30 is turned on, it extracts light beam 62 a from a waveguide core 20 and redirect the light beam 62 b into free space, it redirects an incoming light beam 80 from free space and injects the light beam 80 a into the waveguide core 20 , or it performs both functions at the same time, depending on specific applications. On and off states of a light switch 30 are achieved by pulling the light switch 30 into a close vicinity of the waveguide core 20 and by pushing the light switch 30 away from the waveguide core 20 , respectively. An interactive fiat-panel display can be built based on this invention. A plurality of parallel channel waveguides forms a display panel. An array of light beams 62 a , injected from an array light source 60 , propagates along waveguide cores 20 until reaches a location where a light switch 30 is turned on. At this location, the light switch 30 redirects the light beams towards a viewer. An image is produced when the light switches 30 are turned on sequentially while the light-intensity distribution on the array light source 60 is synchronically updated. The panel display is capable of responding to an input optical signal by detecting an incoming light beam 80 from a light pen 100 . An array of photodetectors 81 is used to identify the location of the incoming light beam 80 on the display panel and a computer is used to execute a corresponding action accordingly.
205 citations
TL;DR: Both [Ru(phen)2(qdppz)]2+ and [Ru-2(dicnq]2+ exhibit interesting photochemical properties depending on the characteristic features of the coordinated dipyridophenazine-based ligand in them, and while the former complex acts as an “electro-photo switch”, the latter one has been demonstrated to be a “molecular light switch’ for DNA.
Abstract: Both [Ru(phen)2(qdppz)]2+ and [Ru(phen)2(dicnq)]2+ exhibit interesting photochemical properties depending on the characteristic features of the coordinated dipyridophenazine-based ligand in them: while the former complex acts as an “electro-photo switch”, the latter one has been demonstrated to be a “molecular light switch” for DNA.
156 citations
TL;DR: The DNA binding behavior was studied by absorption spectroscopy and viscosity measurements, which suggest that the DNA-complex interaction involves intercalation of the metal-bound pztp ligand into the base pairs of duplex DNA.
Abstract: Two novel ruthenium(II) complexes, [Ru(pztp)2(phen)](ClO4)2 and [Ru(pztp)2(bpy)](ClO4)2, have been synthesized and characterized by UV/Vis and 1H NMR spectroscopies and mass spectrometry. The MeCN solutions of both complexes display fluorescence that was found to be highly sensitive to the presence and concentration of water. The complexes behave like a "light switch" for DNA in that they do not luminesce in water but were "turned on" in the presence of DNA and show emission enhancement with the increase of DNA concentration. Their DNA binding behavior was also studied by absorption spectroscopy and viscosity measurements, which suggest that the DNA-complex interaction involves intercalation of the metal-bound pztp ligand into the base pairs of duplex DNA.
137 citations
Patent•
14 Oct 1987
TL;DR: In this article, a switch assembly actuated by passive infrared radiation for operating a light in a space, the switch assembly including an optical system which senses infrared radiation over a 180° range in horizontal plane including two separate vertical fields of view, a generally horizontal "look-out" field and a vertical semi cone-shaped "lookdown" sensing field for directing to a common sensing element produced by a person moving within the sensing field.
Abstract: A switch assembly actuated by passive infrared radiation for operating a light in a space, the switch assembly including an optical system which senses infrared radiation over a 180° range in horizontal plane including two separate vertical fields of view, a generally horizontal "look-out" field and a vertical semi cone-shaped "look-down" sensing field for directing to a common sensing element passive infrared radiation produced by a person moving within the sensing field of the switch assembly, the sensing element connected to a control circuit which responsively turns on the light, maintains the light on while the person remains in the space, and turns the light off automatically when the person leaves the space. The switch assembly includes a one-piece optical shell enclosed within a housing which is adapted for installation in a conventional light switch box in room. Another embodiment of the switch assembly is adapted for mounting on the exterior wall of a building for controlling the energization of an exterior light, turning the light on automatically whenever a person approaches the building.
110 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 3 |
| 2020 | 9 |
| 2019 | 4 |
| 2018 | 8 |
| 2017 | 9 |
| 2016 | 15 |