-
公开(公告)号：US20190353948A1
公开(公告)日：2019-11-21
申请号：US16195618
申请日：2018-11-19
IPC分类号： G02F1/1347 , G02F1/139 , G02F1/13363
摘要： Used herein are two or more switchable variable birefringence liquid crystal devices, in combination with a passive retarder, to produce a device that switches between two retardation values. The device preserves the normal-incidence retardation in each of two voltage states over a broad range of incidence angles using a novel self-compensation scheme. According to one embodiment of this design, the retardation in the thickness direction remains zero in both the unenergized and fully energized states.
-
公开(公告)号：US20180299601A1
公开(公告)日：2018-10-18
申请号：US15952336
申请日：2018-04-13
摘要： Optical filters that enhance image quality by exploiting differences in the wavelength dependence of the spectral power distribution (SPD) and the degree of polarization between elements in a scene in order to preserve, and more preferably enhance, color-contrast between one or more salient objects in the scene and/or a salient object and a background. The higher degree of polarization may be associated with the background or the one or more salient objects. Color contrast is associated with one or more of a difference in saturation, a difference in hue, and a difference in lightness.
-
公开(公告)号：US06795243B1
公开(公告)日：2004-09-21
申请号：US10262520
申请日：2002-10-01
IPC分类号： G02B2728
CPC分类号： G02B6/10 , G02B5/201 , G02B5/3058 , G02B27/286 , G02F1/13362 , Y10S385/901
摘要： A recirculating light polarizer utilizes a reflective polarizer on the exit face of a light integrator, such as a light pipe or light tunnel. Light is provided to the light integrator and light of one polarization is transmitted through the polarizer, the remaining light being reflected back into the integrator. The back-reflected light accumulates polarization shift before it eventually is reflected back to the polarizer. The reflected light is further homogenized on its trip back to the polarizer. This process is typically repeated several times to enhance the light output from the light pipe assembly, with some light being lost in each cycle due to various loss mechanisms. A polarization state modifier, such as a retarder plate or phase-shifting coatings, may be included in the recirculating light path to enhance polarization shift.
摘要翻译： 循环光偏振器利用光积分器的出射面上的反射偏振器，例如光管或光通道。 光被提供给光积分器，并且一个偏振的光透射通过偏振器，剩余的光被反射回到积分器中。 后反射光在其最终被反射回偏振器之前累积偏振偏移。 反射光在其行程上进一步均匀化回到偏振器。 该过程通常重复几次以增强来自光管组件的光输出，由于各种损耗机制，每个循环中的一些光损失。 可以在再循环光路中包括诸如延迟板或相移涂层的偏振态调节剂以增强偏振偏移。
-
公开(公告)号：US20190235145A1
公开(公告)日：2019-08-01
申请号：US16260903
申请日：2019-01-29
CPC分类号： G02B5/3025 , G02B27/0977 , G02B27/30
摘要： Hollow optical elements that derive optical power from compound-curved reflective surfaces to produce a desired composite optical power. The reflective surfaces in combination with polarization control, can produce a triple-pass arrangement that determines the optical power. Two functional films, one or both of which are formed (e.g., thermoformed), can be joined at the perimeter to form units that are mechanically robust and therefore preserve optical performance under mechanical load. The air-spaced cavity formed between the two layers is free of birefringence concerns, where polarization control is crucial to contrast. These optical elements can be installed in frames or headsets to form lightweight wearable magnifiers, wide-angle collimators, tele-photo lenses, or for any application requiring optical power. They may be most appropriate for applications where light efficiency is not critical, such as well-lit environments, where the insertion-loss of 1 to 2 stops is not problematic
-
公开(公告)号：US20180210223A1
公开(公告)日：2018-07-26
申请号：US15879043
申请日：2018-01-24
CPC分类号： G02B27/288 , G02B7/006 , H04N5/2252 , H04N5/2254
摘要： Single-stage polarization interference filters (PIFs) which produce sinusoidal transmission spectra useful for (Red, Green, Blue) color enhancement (CE). The depth of the CE effect can be modulated by rotating a polarizer. Further, a color suppression (CS) (Cyan/Yellow) state is obtained by rotating a polarizer to the orthogonal state, and a spectrally flat neutral state is obtained at an intermediate polarizer orientation. Described are CE filters that are very stable in transmitted lumens and white-point during tuning, which can, for example, substantially eliminate the need for image post-processing. Tunable CE filters can be used for sensors, image capture, display, tunable light sources, augmented reality, virtual reality, and sunglass eyewear applications. Further described are camera filters with a unique two-step tuning mechanism, which allows photographers to make independent adjustments to functional filter characteristics using a single hand in a sequential manner.
-
公开(公告)号：US20110037403A1
公开(公告)日：2011-02-17
申请号：US12445659
申请日：2007-10-16
IPC分类号： H05B41/24
CPC分类号： G03B21/20 , G03B21/2006 , G03B33/06 , G03B33/08 , H04N9/312 , H04N9/3155 , H04N9/3194
摘要： An electrodeless plasma lamp and method of generating light is described. The lamp may comprise a lamp body comprising a dielectric material having a relative permittivity greater than 2. A lamp drive circuit is coupled to the lamp body and configured to provide radio frequency (RF) power to the lamp body. A bulb is positioned adjacent to the lamp body, the bulb containing a fill that forms a plasma when the RF power is coupled to the fill from the lamp body. The lamp drive circuit includes a control circuit to control the RF power to vary a temperature of the fill to emit light at adjustable output intensities. The control circuit may be configured to modulate a frequency of the RF power. In an example embodiment, the control circuit is configured to modulate the frequency in the range of 10 Hz to 10 KHz.
摘要翻译： 描述了一种无电极等离子体灯和产生光的方法。 灯可以包括灯主体，其包括具有大于2的相对介电常数的介电材料。灯驱动电路耦合到灯体并且被配置为向灯体提供射频（RF）电力。 灯泡定位成与灯体相邻，当灯泡与灯体耦合到填充物时，灯泡包含形成等离子体的填充物。 灯驱动电路包括控制电路以控制RF功率以改变填充物的温度以以可调的输出强度发光。 控制电路可以被配置为调制RF功率的频率。 在示例性实施例中，控制电路被配置为调制在10Hz至10KHz范围内的频率。
-
公开(公告)号：US07994721B2
公开(公告)日：2011-08-09
申请号：US11553681
申请日：2006-10-27
申请人： Frederick M. Espiau , Anthony D. McGettigan , Yian Chang , Frederick M. Espiau, legal representative , Marc DeVincentis
IPC分类号： H01J7/46
CPC分类号： H01J65/044 , H01J61/30 , H01P7/10 , Y02B20/22
摘要： A plasma lamp for an electrodeless plasma lamp having a dielectric waveguide body and a bulb positioned, at least in part, in the waveguide body and having at least one end protruding from the waveguide body. A probe is used to couple power into the waveguide body. The power resonates in the waveguide body and ignites a plasma in the bulb. By having one or both ends of the bulb extend beyond the surface of the waveguide body, the ends of the bulb are exposed to reduced electric field intensity, resulting in longer bulb lifetime due to reduced plasma impingement on the interior surfaces of the bulb.
摘要翻译： 一种用于无电极等离子体灯的等离子体灯，其具有至少部分地位于波导体中并具有从波导体突出的至少一个端部的电介质波导体和灯泡。 探头用于将功率耦合到波导体中。 功率在波导体中谐振并点燃灯泡中的等离子体。 通过使灯泡的一端或两端延伸超过波导体的表面，灯泡的端部暴露于电场强度降低，由于灯泡内表面上的等离子体冲击减少导致更长的灯泡寿命。
-
公开(公告)号：US07791278B2
公开(公告)日：2010-09-07
申请号：US11553856
申请日：2006-10-27
申请人： Marc DeVincentis , Yian Chang , Frederick M. Espiau, legal representative , Anthony D. McGettigan
IPC分类号： H01J17/49
CPC分类号： H01J65/044 , Y02B20/22
摘要： A plasma lamp for an electrodeless plasma lamp having a waveguide body. The non-radiative thermal losses from the bulb are controlled to prevent the bulb from melting while providing a high level of radiation from the bulb. The thermal conductivity of the waveguide, configuration of the heat sink and size and placement of the bulb may be selected to provide a brightness of more than 80 lumens per watt and a total brightness of more than 12,000 lumens at a power level of 150 watts.
摘要翻译： 一种具有波导体的无电极等离子体灯的等离子体灯。 控制来自灯泡的非辐射热损失以防止灯泡熔化，同时提供来自灯泡的高水平辐射。 可以选择波导的热导率，散热器的结构以及灯泡的尺寸和布置，以提供大于80流明/瓦特的亮度和在150瓦的功率水平下的总亮度大于12000流明。
-
公开(公告)号：US20100123396A1
公开(公告)日：2010-05-20
申请号：US12576895
申请日：2009-10-09
CPC分类号： H01J65/044 , Y02B20/22
摘要： An electrodeless plasma lamp comprising a lamp housing and a lamp body releasably received with the lamp housing. The lamp housing includes a first electrical connector operatively coupled a power source to provide radio frequency (RF) power. The lamp body includes a second electrical connector to releasably engage with the first electrical connector of the lamp housing. The lamp body includes a dielectric material having a relative permittivity greater than 2. RF power is coupled by the lamp body to a bulb containing a fill that forms a light emitting plasma. In an example embodiment, the plasma lamp includes a retaining arrangement releasably to retain the lamp body at least partially within the lamp housing.
摘要翻译： 一种无电极等离子体灯，包括灯壳体和可拆卸地容纳在灯壳体中的灯体。 灯壳包括可操作地耦合电源以提供射频（RF）功率的第一电连接器。 灯体包括可与灯壳体的第一电连接器可释放地接合的第二电连接器。 灯体包括具有大于2的相对介电常数的介电材料.RF功率由灯体耦合到包含形成发光等离子体的填充物的灯泡。 在示例性实施例中，等离子体灯包括可释放地保持灯体至少部分地在灯壳体内的保持装置。
-
公开(公告)号：US07088510B2
公开(公告)日：2006-08-08
申请号：US10785589
申请日：2004-02-23
CPC分类号： G02B5/3016
摘要： An anti-aliasing filter includes a polymeric double-refraction plate (“DRP”). The DRP of the anti-aliasing filter has at least a first liquid photo-polymerization (“LPP”) layer disposed on the substrate, or on an intervening layer(s) disposed on the substrate, and a first liquid-crystal polymer (“LCP”) layer is disposed on the first LPP layer, the first DRP having a thickness selected so as to provide a selected separation of oridinary and extraordinary light rays.
摘要翻译： 抗混叠滤波器包括聚合双折射板（“DRP”）。 抗混叠滤光器的DRP至少具有设置在基板上的第一液态光聚合（“LPP”）层，或设置在基板上的中间层，以及第一液晶聚合物（“ LCP“）层设置在第一LPP层上，第一DRP具有选择的厚度，以便提供选择性的分离和非寻常的光线。
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.018 秒)