摘要:
A scene projector (200) including an array of light emitting pixels (110), a tunable filter element (120), and a spatial light modulator (122). The tunable filter element is optically coupled to the array of light emitting pixels such that light emitted from the array of light emitting pixels is passed through the tunable filter element as filtered light. The spatial light modulator is optically coupled to the array of light emitting pixels and is configured to generate transmitted light by interacting with the filtered light to control at least one of an amplitude, a phase, and a polarization of the filtered light. According to one embodiment, a light source (130) is a laser that is coupled to the spatial light modulator (122) to create an optical pattern (125) in the form of a light pattern that is imaged or "written" onto the optical window (140).
摘要:
The present invention provides a solar reflective-absorptive device, comprising: at least one flexible IR reflective transparent conductive film; at least one flexible transparent conductive film; at least one layer of liquid crystal dispersion in polymer matrix or polymer dispersion in liquid crystal domains; allocated between said at least one flexible IR reflective transparent conductive film and said at least one flexible transparent conductive film. The liquid crystal dispersion in polymer matrix or polymer dispersion in liquid crystal domains, comprises metal- organic dye compositions with absorption in the visible and/or IR regions of solar spectrum. The aforesaid liquid crystal dispersion in polymer matrix or polymer dispersion in liquid crystal domain consists of nematic mixtures and/or cholesteric (chiral nematic) mixtures comprising of chiral mesogenic or none-mesogenic chiral materials in nematic for IR absorption and/or broad- band cholesteric materials for dynamic (electrically tunable) IR and visible absorption. The electrically switchable capability of the device will be carried out through reorientation of liquid crystal dispersion in polymer matrix or polymer network in liquid crystal domains layer, sandwitched between said at least one transparent IR-reflective flexible conductive support and said transparent flexible conductive support.
摘要:
An optical element is disclosed. The optical element comprises: a first phase shift mask formed on a first optical material and constituted to generate a positive phase shift, and a second phase shift mask formed on a second optical material and constituted to generate a negative phase shift, wherein the phase shift masks are arranged serially on an optical axis, and wherein a refractive index of at least one of the first and second optical materials varies with the temperature at a rate of at least 50x10 -6 per degree Kelvin.
摘要:
액정표시소자 및 이를 이용한 전자펜 시스템이 개시된다. 상기 액정표시소자는 가상의 격자선과 다수의 마크를 포함하는 정보패턴이 형성되어 있으며 표면에 도달한 적외선을 반사하는 적외선 반사층; 및 상기 적외선 반사층의 상층에 형성되며 외부 압력에 의하여 액정분자의 배열 상태가 변경되는 액정층을 포함한다.
摘要:
The embodiments described herein provide an electrochromic device. In an exemplary embodiment, the electrochromic device includes (1) a substrate and (2) a film supported by the substrate, where the film includes transparent conducting oxide (TCO) nanostructures. In a further embodiment, the electrochromic device further includes (a) an electrolyte, where the nanostructures are embedded in the electrolyte, resulting in an electrolyte, nanostructure mixture positioned above the substrate and (b) a counter electrode positioned above the mixture. In a further embodiment, the electrochromic device further includes a conductive coating deposited on the substrate between the substrate and the mixture. In a further embodiment, the electrochromic device further includes a second substrate positioned above the mixture.
摘要:
An electrochromic device (ECD) includes an electrochromic cell and, optionally, one or more additional electrochromic cells where all cells are parallel, and where at least one of the electrodes of one of the cells comprises a single-walled carbon nanotube (SWNT) film. The electrochromic cells allow the control of transmittance of two or more di fferent portions of the electromagnetic spectrum through the ECD. One cell can control the transmittance of visible radiation while the other cell can control the transmittance of IR radiation. The ECD can be employed as a "smart window" to control the heat and light transmission through the window. The ECD can be in the form of a laminate that can be added to an existing window.
摘要:
Compact laser systems are disclosed which include ultrafast laser sources in combination with nonlinear crystals or waveguides. In some implementations fiber based mid-IR sources producing very short pulses and/or mid-IR sources based on a mode locked fiber lasers are utilized. Some embodiments may include an infrared source with an amplifier system comprising, in combination, a Tm fiber amplifier and an Er fiber amplifier. A difference frequency generator receives outputs from the Er and/or Tm amplifier system, and generates an output comprising a difference frequency. Exemplary applications of the compact, high brightness mid-IR light sources include medical applications, spectroscopy, ranging, sensing and metrology.