Retroreflective traffic stripe for both dry and wet weather conditions

    公开(公告)号:US11124932B1

    公开(公告)日:2021-09-21

    申请号:US17245215

    申请日:2021-04-30

    摘要: A retroreflective traffic stripe comprising an exposed top surface containing a widely spaced repeating pattern of linear light-turning prisms over a bottom surface containing two different types of cube corner retroreflective prisms. The light-turning prisms are configured to use refraction and reflection to redirect light from distant headlights into a downward direction onto the bottom surface of the traffic stripe. Cube corner retroreflective prisms of the first type on the bottom surface have optical axes which are substantially perpendicular to the surfaces of the traffic stripe and are located substantially beneath such light-turning prisms. Cube corner retroreflective prisms of the second type on the bottom surface have optical axes tilted toward the distant headlights by at least 25 degrees and are located substantially between such light-turning prisms. Under dry road conditions, the light-turning prisms and first type of cube corner prisms provide unprecedented levels of retroreflectivity. Under wet road conditions, the second type of cube corner prisms provide high levels of retroreflectivity.

    Stretched fresnel lens solar concentrator for space power, with cords, fibers, or wires strengthening the stretched lens

    公开(公告)号:US10353187B2

    公开(公告)日:2019-07-16

    申请号:US13947083

    申请日:2013-07-21

    IPC分类号: G02B7/02 G02B19/00 G02B3/08

    摘要: This invention includes a flexible Fresnel lens assembly which can be efficiently stowed into a small volume, and then deployed with a mechanism, including structural elements, that provides tensioning at the ends of the lens assembly to position and support the lens assembly in proper position relative to a photovoltaic receiver, onto which the lens assembly focuses sunlight for conversion into electricity. The flexible stretched lens assembly includes a transparent prismatic polymer film, comprising a refractive optical element, attached to flexible cords, fibers, or wires that carry the bulk of the tension load in the stretched lens assembly when it is deployed in its final functional position. This present invention represents a critical and mission-enabling improvement to an earlier stretched lens array invention described in U.S. Pat. No. 6,075,200 (Reference 1).

    Stretched Fresnel Lens Solar Concentrator for Space Power, with Cords, Fibers, or Wires Strengthening the Stretched Lens
    3.
    发明申请
    Stretched Fresnel Lens Solar Concentrator for Space Power, with Cords, Fibers, or Wires Strengthening the Stretched Lens 审中-公开
    拉伸菲涅耳透镜太阳能集中器,用于电力线,光纤或电线加强拉伸透镜

    公开(公告)号:US20150022909A1

    公开(公告)日:2015-01-22

    申请号:US13947083

    申请日:2013-07-21

    IPC分类号: G02B19/00 G02B7/02

    CPC分类号: G02B19/0042 G02B3/08 G02B7/02

    摘要: This invention includes a flexible Fresnel lens assembly which can be efficiently stowed into a small volume, and then deployed with a mechanism, including structural elements, that provides tensioning at the ends of the lens assembly to position and support the lens assembly in proper position relative to a photovoltaic receiver, onto which the lens assembly focuses sunlight for conversion into electricity. The flexible stretched lens assembly includes a transparent prismatic polymer film, comprising a refractive optical element, attached to flexible cords, fibers, or wires that carry the bulk of the tension load in the stretched lens assembly when it is deployed in its final functional position. This present invention represents a critical and mission-enabling improvement to an earlier stretched lens array invention described in U.S. Pat. No. 6,075,200 (Reference 1).

    摘要翻译: 本发明包括柔性菲涅尔透镜组件,其可以被有效地收纳到小体积中,然后部署有包括结构元件在内的机构,该机构在透镜组件的端部处提供张紧,以将透镜组件定位并支撑在适当的位置 到光电接收器,透镜组件聚焦在其上以将其转换成电的光。 柔性拉伸透镜组件包括透明棱镜聚合物膜,该透明棱镜聚合物膜包括折射光学元件,其附接到柔性帘线,纤维或导线,当柔性拉伸透镜组件部署在其最终功能位置时,拉伸透镜组件承载大部分拉伸载荷。 本发明代表了美国专利中描述的早期拉伸透镜阵列发明的关键和可实现任务的改进。 6,075,200号(参考文献1)。

    Retroreflective traffic stripe for both wet and dry weather conditions

    公开(公告)号:US11319680B1

    公开(公告)日:2022-05-03

    申请号:US17544237

    申请日:2021-12-07

    摘要: This invention is a novel retroreflective traffic stripe comprising an exposed top surface containing a widely spaced repeating pattern of linear light-turning prisms and a second repeating pattern of linear prisms between the light-turning prisms, over a bottom surface containing cube corner retroreflective prisms. The two types of top surface prisms are operable under dry and wet weather conditions, respectively. Both types of top surface prisms are configured to use refraction and reflection to redirect light from distant headlights into a downward direction onto the bottom surface of the traffic stripe under dry and wet weather conditions, respectively. Cube corner retroreflective prisms on the bottom surface accept the light and return it in the opposite direction.

    Retroreflective Traffic Stripe 1,000X Brighter than the Current State of the Art

    公开(公告)号:US20210381178A1

    公开(公告)日:2021-12-09

    申请号:US16988891

    申请日:2020-08-10

    IPC分类号: E01F9/524 E01F9/512

    摘要: This invention is a novel retroreflective traffic stripe comprising a widely spaced repeating pattern of linear light turning prisms over cube corner retroreflective prisms in a critical optimal configuration. The light turning prisms comprise at least two exposed surfaces, one approximately vertical facing the headlights of oncoming traffic, and another opposing the first and sloped by approximately 45 degrees. The approximately vertical surface efficiently accepts light from the headlights and transmits such light to the sloped surface which totally internally reflects such light downward onto an array of cube corner retroreflective prisms, which totally internally reflect such light in approximately the reverse direction. Such reflected light once more encounters the sloped face of the light turning prisms which totally internally reflects the light toward the approximately vertical surface, where such light exits and returns toward the headlights and, more importantly, toward the eyes of the driver of the vehicle.

    Stretched Fresnel lens solar concentrator for space power
    6.
    发明授权
    Stretched Fresnel lens solar concentrator for space power 有权
    拉伸菲涅尔透镜太阳能集中器

    公开(公告)号:US6075200A

    公开(公告)日:2000-06-13

    申请号:US343606

    申请日:1999-06-30

    摘要: A novel, high-efficiency, extremely light-weight, robust stretched Fresnel lens solar concentrator for space power is described. It consists of a flexible Fresnel lens attached to end supports, wherein said end supports stretch the lens to maintain its proper position and shape on orbit in space. One embodiment of the new concentrator includes means for lens deployment on orbit in space. In this embodiment, prior to deployment, the flexible lens and end supports are folded into a flat, low-volume package for efficient launch into space. Another embodiment of the new concentrator includes non-deployable means of stretching the lens to maintain its proper position and shape in space. Both embodiments of the new concentrator approach will provide significant advantages over the prior art in space photovoltaic concentrator arrays. Photovoltaic concentrator arrays using the new stretched lens will be much lighter and more economical than prior space concentrator arrays. Also, photovoltaic concentrator arrays using the new stretched lens will be easier to stow into a compact volume for launch, and easier to deploy on orbit than prior space concentrator arrays. In addition, the new stretched lens will eliminate the need for a fragile glass superstrate to support the lens, substantially improving robustness of the lens.

    摘要翻译: 描述了一种用于空间电力的新型高效率,极轻重的强壮的拉伸菲涅尔透镜太阳能集中器。 它由一个安装在端部支架上的柔性菲涅耳透镜组成,其中所述端部支撑件拉伸透镜,以保持它在空间轨道上的适当位置和形状。 新集中器的一个实施例包括用于在空间轨道上展开镜头的装置。 在该实施例中,在部署之前,将柔性透镜和端部支撑件折叠成平坦的低容量包装,以有效地发射到空间中。 新集中器的另一个实施例包括拉伸透镜以在空间中保持其适当位置和形状的不可展开的装置。 新的聚光器方法的两个实施例将提供超过空间光电集中器阵列中的现有技术的显着优点。 使用新的拉伸透镜的光电集中器阵列将比现有的空间集中器阵列轻得多,更经济。 此外,使用新的拉伸镜头的光伏集中器阵列将更容易被放入紧凑的发射体积中,并且比现有的空间集中器阵列更容易在轨道上部署。 此外,新的拉伸镜片将不再需要易碎的玻璃底板来支撑透镜,从而大大改善了镜片的坚固性。

    Retroreflective traffic stripe 1,000X brighter than the current state of the art

    公开(公告)号:US11486103B2

    公开(公告)日:2022-11-01

    申请号:US16988891

    申请日:2020-08-10

    IPC分类号: E01F9/524 E01F9/512 G02B5/124

    摘要: This invention is a novel retroreflective traffic stripe comprising a widely spaced repeating pattern of linear light turning prisms over cube corner retroreflective prisms in a critical optimal configuration. The light turning prisms comprise at least two exposed surfaces, one approximately vertical facing the headlights of oncoming traffic, and another opposing the first and sloped by approximately 45 degrees. The approximately vertical surface efficiently accepts light from the headlights and transmits such light to the sloped surface which totally internally reflects such light downward onto an array of cube corner retroreflective prisms, which totally internally reflect such light in approximately the reverse direction. Such reflected light once more encounters the sloped face of the light turning prisms which totally internally reflects the light toward the approximately vertical surface, where such light exits and returns toward the headlights and, more importantly, toward the eyes of the driver of the vehicle.

    Retroreflective traffic stripe
    9.
    发明授权

    公开(公告)号:US10794021B1

    公开(公告)日:2020-10-06

    申请号:US16891258

    申请日:2020-06-03

    IPC分类号: E01F9/524 E01F9/512 G02B5/124

    摘要: A retroreflective traffic stripe comprising a widely spaced repeating pattern of linear light-turning prisms over cube-corner retroreflective prisms. The light-turning prisms comprise at least two exposed surfaces: one approximately vertical facing the headlights of an oncoming vehicle, and another opposing the first and sloped by approximately 45 degrees. The approximately vertical surface accepts light from the headlights and transmits such light to the sloped surface which totally internally reflects such light downward onto an array of cube corner retroreflective prisms, which totally internally reflect such light in approximately the reverse direction. Such reflected light once more encounters the sloped face of the light turning prisms which totally internally reflects the light toward the approximately vertical surface, where such light exits and returns toward the headlights and toward the eyes of the driver of the vehicle.

    Fresnel Lens Solar Concentrator Configured to Focus Sunlight at Large Longitudinal Incidence Angles onto an Articulating Energy Receiver
    10.
    发明申请
    Fresnel Lens Solar Concentrator Configured to Focus Sunlight at Large Longitudinal Incidence Angles onto an Articulating Energy Receiver 审中-公开
    菲涅尔透镜太阳能集中器配置为将阳光聚焦在大的纵向发射角度到铰接能量接收器

    公开(公告)号:US20150053253A1

    公开(公告)日:2015-02-26

    申请号:US13975338

    申请日:2013-08-25

    IPC分类号: H01L31/052

    摘要: This invention includes a Fresnel lens assembly positioned relative to an energy receiver, onto which the lens assembly focuses sunlight for collection and conversion. The Fresnel lens assembly includes a thin polymeric film with prisms molded into or attached to the film. This invention also includes an articulating energy receiver which can move closer to or farther away from the lens depending on the longitudinal angle of incidence of the sunlight relative to the lens, to maintain the best focus of sunlight on the energy receiver. The prisms in the present lens are specified to provide acceptable optical performance in the presence of relatively large longitudinal solar incidence angles, relatively smaller lateral solar incidence angles, in combination with the articulating energy receiver. The new lens assembly can further be deployed and supported as a thin flexible stretched membrane with tension maintaining the lens in proper position on orbit.

    摘要翻译: 本发明包括相对于能量接收器定位的菲涅尔透镜组件,透镜组件聚焦在其上用于收集和转换的太阳光。 菲涅耳透镜组件包括具有模制成膜或附着于膜的棱镜的薄聚合物膜。 本发明还包括一种铰接式能量接收器,其能够依赖于相对于透镜的阳光的纵向入射角度而靠近或远离透镜,以保持阳光对能量接收器的最佳聚焦。 本透镜中的棱镜被规定为在相对较大的纵向太阳入射角,相对较小的横向太阳入射角与结合能量接收器的组合的存在下提供可接受的光学性能。 新的透镜组件可以进一步被布置和支撑为具有张力的薄柔性拉伸膜,从而将透镜保持在轨道上的适当位置。