Method and device for measuring refractive index of double prism based on optical lever
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An optical lever and double prism technology, applied in the field of optical measurement, can solve the problems of cumbersome instrument adjustment, high cost, and complicated instrument.
Inactive Publication Date: 2016-09-14
INNER MONGOLIA UNIV OF SCI & TECH
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Refractive index is an important parameter of a double prism. At present, the methods used to measure this parameter include light wave interference method, secondary imaging method, and spectrometer measurement. These methods use complicated instruments, cumbersome instrument adjustments, and relatively low cost. high
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[0040] The above and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.
[0041] The invention utilizes the optical lever and can realize the measurement of the refractive index of the biprism through the geometrical optics method.
[0042] see figure 1 As shown, it is a schematic structural diagram of a device for measuring the refractive index of a biprism based on an optical lever of the present invention, the device includes a base 1, a slide rail 2, a lead screw 3, a stage 4, a laser aligner 5, a bracket 6, Ruler 11, double prism 12, the base 1 is made of cast iron, 50cm long and 30cm high; a slide rail 2 is installed on the base 1, the slide rail is made of steel, 30cm long, and the middle is slotted; the slide rail 2 A lead screw 3 is installed, and the lead screw 3 is placed in the groove of the slide rail 2; the lead screw 3 passes through the lower end of the stage 4 an...
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Abstract
The invention relates to a method and device for measuring the double-prism refractive index on basis of optical levers. The device comprises a base, a sliding rail, a laser self-aligner, a support and a ruler, wherein the base is provided with the sliding rail, the sliding rail is provided with a screw rod, the screw rod penetrates through the lower end of an objective table and is connected with the objective table, when the screw rod is rotated, the objective table can move horizontally on the sliding rail, one end of the guide rail is provided with a lifting block, the other end of the guide rail is provided with the laser self-aligner, the support is installed on the end portion of the base, the support is provided with an optical lever set, the sliding rail is provided with a leveling screw and a positioning screw, the horizontal angle of the sliding rail is adjusted through the leveling screw, the lifting block can ascend and descend through rotation of the positioning screw at the lower end of the lifting block, the ruler is composed of a plane mirror, and the surface of the plane mirror is provided with millimeter graduations. According to the method and device, experiment phenomena are visual, precision is high, cost is low, operations can be easily and conveniently carried out, new college physical experiment items can be developed through the method and device, and the method and device are suitable for being used in colleges.
Description
technical field [0001] The invention relates to the field of optical measurement, in particular to a method and device for measuring the refractive index of a biprism based on an optical lever. Background technique [0002] A biprism is an important optical device that can be used to observe and measure a range of optical quantities, such as wavelengths of light waves. Refractive index is an important parameter of biprism. At present, the measurement of this parameter includes light wave interferometry, secondary imaging method, and spectrometer measurement. These methods use complicated instruments, complicated instrument adjustment, and relatively high cost. high. [0003] In view of the above-mentioned defects, the creator of the present invention finally obtained the present creation after a long period of research and practice. Contents of the invention [0004] The purpose of the present invention is to provide a method and device for measuring the refractive index...
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