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    • 5. 发明公开
    • OPTICAL ELEMENT, OPTICAL CONTROL METHOD AND APPARATUS USING THE OPTICAL ELEMENT, AND METHOD OF MANUFACTURING THE OPTICAL ELEMENT
    • 光学元件,控制方法和设备中,利用光学元件的光学元件和方法
    • EP1011007A4
    • 2001-12-05
    • EP98936708
    • 1998-08-07
    • AGENCY IND SCIENCE TECHNDAINICHISEIKA COLOR BR & CHEMIHIRAGA TAKASHIMORIYA TETSUO
    • HIRAGA TAKASHIMORIYA TETSUOTANAKA NORIOYANAGIMOTO HIROMITSUUENO ICHIROTSUJITA KOJI
    • G02F1/01G02F1/29G02B3/00G02B6/12
    • G02F1/293G02F1/0147
    • An optical element, an optical control method and an optical control apparatus, wherein use is made of a low-power laser beam as a control beam to yield a light response of sufficient magnitude and speed. A control beam is projected from a light source (1), while a signal beam is from a light source (2). The control beam and the signal beam are converged by a condenser lens (7) and thrown onto an optical element (8). These beams pass through a light receiving lens (9) and a wavelength selection filter (20), and only the signal beam is detected with a photodetector (22). By turning the control beam on and off, a thermal lens is reversibly formed in the optical element, realizing the modulation of the signal beam intensity. The optical element may be formed in a laminated structure comprising, for example, a heat transfer layer, a heat retaining layer, and a heat transfer layer, and the thickness of the light absorbing layer is adjusted so as not to exceed two times the confocal distance of the converged control beam, thereby providing a light response of sufficient magnitude and speed by the use of a low-power laser beam as a control beam.
    • 的光学元件,光控制元件和光控制方法设置其证明使用低输出作为控制光的激光的大量,快速光学响应。 一种信号光1从在光源1,一种信号光2从光源2,一种控制光和信号光发射的发射的由聚光透镜7会聚,并且在光学元件8.只有信号光照射是 由光电检测器22检测,虽然光接收透镜9和波长选择过滤器20的热透镜在光学元件可逆地形成,并且切换控制光ON和OFF调制的信号光的强度。 该光学元件具有层状结构,包括一个热传导膜/隔热膜/光吸收薄膜/热绝缘膜/热转印膜,对于实施例,并且足够大的,快速的光响应是使用低输出的激光光作为对照获得 通过调整光吸收的厚度光薄膜所以做到了大小限制两次会聚控制光的共焦长度。