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Polarizing/filter wheel which is used in multichannel polarized light and channel filtering system and has adjustable angle

A technology of filter wheel and polarized light, which is applied in the direction of optics, optical elements, installation, etc., can solve the problems that the bracket cannot be equipped at the same time, the angle of the optical element cannot be adjusted, and the optical element cannot be switched, so as to achieve convenient dismantling and installation, Easy to read, easy to switch effects

Inactive Publication Date: 2010-03-03
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The mounting holes of the existing filter wheels are all fixed on the filter wheel, and the optical elements installed therein cannot be adjusted in angle, and the polarizers used for clamping circular optical elements (such as wave plates, polarizers, etc.) frame, and cannot realize the switching of optical components between different channels
Therefore, existing support can not possess described two kinds of functions required simultaneously

Method used

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  • Polarizing/filter wheel which is used in multichannel polarized light and channel filtering system and has adjustable angle
  • Polarizing/filter wheel which is used in multichannel polarized light and channel filtering system and has adjustable angle
  • Polarizing/filter wheel which is used in multichannel polarized light and channel filtering system and has adjustable angle

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Experimental program
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Effect test

Embodiment 1

[0019] according to figure 1 , figure 2 , image 3 and Figure 5 The parts shown are machined, assembled, and mounted directly to an optical table with base 5.

[0020] The linearly polarized light with adjustable light intensity is obtained through the device, and the adjustment is convenient; the device of the invention has two filter wheels, and the combined use of the optical elements on the two wheels can be performed. One line of polarizers is installed on one of the filter wheels, and one line of polarizers is respectively installed in different tuning holes of the other filter wheel, and then the angles of the polarizers in different tuning holes are adjusted respectively.

[0021] According to Marius' law,

[0022] I 2 = A 2 2 = A 1 2 cos 2 θ = ...

Embodiment 2

[0028] according to figure 1 , figure 2 , Figure 4 and Figure 5 The parts shown are machined, assembled, and mounted directly to an optical table with base 5.

[0029] Through this device, the acquisition of different polarization states and convenient switching and adjustment are realized:

[0030] There are two filter wheels in the device of the present invention, and the combined use of the optical elements on the two wheels can be performed. Install a λ / 4 wave plate corresponding to the wavelength of the incident light on one of the filter wheels, install polarizers in different tuning holes of the other filter wheel, and then adjust the angles of the polarizers in different tuning holes respectively Adjustment (such as: the angle between the optical axis and λ / 4 is 0°, 45°, 90°, etc.).

[0031] After determining the polarization state, ellipticity and number of polarizers of the required light, set different angles between the optical axis of the λ / 4 wave plate an...

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Abstract

The invention discloses a polarizing / filter wheel which is used in a multichannel polarized light and channel filtering system and has adjustable angle. The polarizing / filter wheel consists of a substrate, a filter wheel and tuning holes. The filter wheel takes the shape of a disk, the outer periphery thereof is provided with an arc sunk groove, the filter wheel is fixed on an inverted T-shaped substrate, and the tuning holes are embedded in installation holes which are radially distributed with equal angles by taking the center of circle of the filter wheel as a center and correspond to the arc sunk groove. A filter wheel installation hole and a spring touching ball are arranged on the central axis of an upright of the inverted T-shaped substrate, and the filter wheel is fixed on the filter wheel installation hole by a fastening ring and a center fastening screw arranged in the back direction. The tuning holes comprise a fixing ring, a locking flat screw, a colloidal spacer, a light filter and a light filter fixing ring. The invention provides the compact and convenient polarizing / filtering structure, and realizes continuous tunableness of angles of all holes and fast switching and tuning of optical elements in a multichannel system.

Description

technical field [0001] The invention relates to an optical device, in particular to a filter wheel with adjustable angles of mounting holes applied in multi-channel polarized optics and channel filter systems. technical background [0002] In existing optical analysis instruments, it is sometimes necessary to use linearly polarized / circularly polarized light as a light source, or to add a polarizer (or wave plate) when detecting the polarization characteristics of the output light. However, for a multi-optical system, or to obtain light with multiple polarization states, it is necessary to switch between different polarizers. At this time, during the switching process, the angle of the polarizer must be adjusted every time to ensure that the intensity and polarization state of the outgoing light remain unchanged, which brings great difficulties to the adjustment work, and is time-consuming and laborious, resulting in large experimental errors. At this time, there is an urge...

Claims

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Application Information

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IPC IPC(8): G02B7/00G02B26/02
Inventor 黄伟冯尚源陈荣李永增林居强黄祖芳黄瑞香俞允陈杰斯
Owner FUJIAN NORMAL UNIV