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    • 9. 发明授权
    • Infrared selective reflective polarizing element
    • 红外选择性反射偏振元件
    • US06185039B2
    • 2001-02-06
    • US09333614
    • 1999-06-15
    • Richard C. AllenGregg A. HietpasJon E. StickrodJohn A Wheatley
    • Richard C. AllenGregg A. HietpasJon E. StickrodJohn A Wheatley
    • G02B550
    • E06B9/24G02B27/281
    • The present invention provides light valves including polarizing elements in which light transmission can be controlled by rotating at least one of the polarizing elements about an in-plane axis. Although reflective polarizing elements are preferred in devices according to the present invention to reduce the problem of heat build-up, the use of absorptive or other polarizers may also be envisioned. The polarizing elements may also include at least one reflective polarizer in combination with an infrared reflective material or an infrared absorptive material. The polarizing elements can be included in light valves to control light transmission by rotating at least one of the polarizing elements about an in-plane axis. The light valves according to the present invention may find use in any application in which the transmission of light (visible or otherwise) is to be controlled. Examples of specific applications include, but are not limited to: windows, luminaires, skylights, etc.
    • 本发明提供了包括偏振元件的光阀,其中可以通过使至少一个偏振元件绕平面轴线旋转来控制光透射。 虽然反射偏振元件在根据本发明的装置中是优选的,以减少发热的问题,但也可以设想使用吸收性或其它偏振器。 偏振元件还可以包括与红外反射材料或红外吸收材料组合的至少一个反射型偏振器。 偏振元件可以包括在光阀中,以通过使至少一个偏振元件围绕平面内轴线旋转来控制光透射。 根据本发明的光阀可以用于要控制光的透射(可见或其它)的任何应用中。 具体应用的示例包括但不限于:窗户,灯具,天窗等