Clamping device for alignment of optical axis of compound wave plate
A clamping device and composite wave plate technology, which is applied in installation, optics, optical components, etc., can solve the problems of no wave plate clamping and its motion control.
Active Publication Date: 2012-06-20
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
The alignment method of Collins et al. provides a method for precise alignment of the composite wave plate, but does not describe in detail the clamping of the wave plate and its motion control
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[0021] Below in conjunction with the accompanying drawings, the structure and function of the clamping device for the optical axis alignment of the composite wave plate provided by the present invention will be described in further detail:
[0022] like figure 1 As shown, the clamping device for aligning the optical axis of the composite wave plate provided by the present invention includes an electronically controlled rotary table 18 , a fixed wave plate chuck 19 and a rotating wave plate chuck 20 .
[0023] Waveplates are precision optical components. Usually, the crystal materials used to make waveplates are brittle and fragile. Clamping the wafer directly can easily damage the wafer. In order to facilitate the clamping of the wafer, a specially designed wafer holder is necessary. In the present invention, the wave plate bracket 17 is used to support and protect the wave plate, so that the clamping and alignment work of the wave plate can be carried out smoothly.
[0024]...
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The invention discloses a clamping device for alignment of an optical axis of a compound wave plate. The clamping device comprises an electrically controlled turntable, a fixed wave plate chuck and a rotary wave plate chuck, wherein a wave plate bracket is mounted on the electrically controlled turntable; the fixed wave plate chuck is connected together with a pedestal of the electrically controlled turntable; the rotary wave plate chuck is connected together with a chuck of the electrically controlled turntable; when the clamping device is used, the wave plate bracket which is provided with a wafer is mounted on the fixed wave plate chuck and the rotary wave plate chuck. The clamping device, disclosed by the invention, can be used for clamping each wafer which constitutes the compound wave plate when the optical axis of the compound wave plate is suitable to high-precision alignment, and guarantees that relative rotation with high precision and high resolution can be generated between different wafers. Compared with the conventional wave plate fixtures, the clamping device, disclosed by the invention, not only can realize clamping and precise positioning of two wafers, but also can realize relative rotation with high precision and high resolution generated between two the wafers; and the clamping device disclosed by the invention is more suitable for alignment process of the optical axis of the compound wave plate.
Description
technical field [0001] The invention belongs to the field of design and manufacture of optical instrument components, in particular to a clamping device used for optical axis alignment of a composite wave plate, which is suitable for accurately aligning the optical axes of two or more wafers in a composite wave plate Clamping and motion control of each wafer during calibration. Background technique [0002] Wave plate (also known as wafer. In the present invention, we call a wave plate composed of two or more wafers a composite wave plate, and call a single wave plate composed of a composite wave plate a wafer to show the difference. When making a special distinction, the composite wave plate and the wafer are collectively referred to as a wave plate.) It is an optical element commonly used in the field of optical instrument design and optical measurement. It can produce additional optical path difference (or phase difference) between the two perpendicular components of pola...
Claims
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Inventor 刘世元陈修国谷洪刚张传维
Owner HUAZHONG UNIV OF SCI & TECH