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Prism refractive index measuring device and method based on mobile phone APP

A prism refraction and measurement device technology, applied in the field of refractive index measurement, can solve the problems of cumbersome adjustment of the spectrometer and complex structure of the spectrometer, and achieve the effect of simple and fast measurement method, eliminating the need for manual calculation, and simple and fast measurement operation

Pending Publication Date: 2020-05-08
SHANGQIU NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the structure of the spectrometer used in the existing prism refractive index measurement experiment is complicated, and the adjustment of the spectrometer is cumbersome when measuring the angle, the present invention provides a device and method for measuring the refractive index of a prism based on a mobile phone APP

Method used

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  • Prism refractive index measuring device and method based on mobile phone APP
  • Prism refractive index measuring device and method based on mobile phone APP
  • Prism refractive index measuring device and method based on mobile phone APP

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Embodiment 1

[0038] The embodiment of the present invention provides a mobile phone APP-based prism refractive index measurement device, the measurement device includes: a laser source 1, a rotating platform 2 and an angle measurement fixture 3; the laser source 1 is used to output laser light; the rotating The platform 2 is used to adjust the direction of the triangular prism 5 to be measured relative to the laser; the angle measurement fixture 3 is used to use the mobile phone 4 to measure the first light direction of the laser beam before refraction by the triangular prism 5 and the second direction of light after refraction by the triangular prism 5 . The laser source 1 can be a helium-neon laser.

[0039] The rotating platform 2 includes a bottom plate 21 , a support shaft 22 fixed on the bottom plate 21 and a turntable 23 rotatable along the support shaft 22 , and a groove 24 for fixing the triangular prism 5 is arranged on the turntable 23 . The supporting shaft 22 is provided with ...

Embodiment 2

[0044] Embodiments of the present invention provide a method for measuring a mobile phone-based prism refractive index measuring device, the method comprising the following steps:

[0045] S101: Make the mobile phone close to the first refraction side of the prism to be tested, and initialize the angle measured by the mobile phone at this time to zero;

[0046] S102: Fix the prism still, make the mobile phone close to the second refraction side of the prism, and the angle measured by the mobile phone at this time is the prism angle;

[0047] S103: Fixing the mobile phone and the angle measuring fixture;

[0048] S104: Adjust the angle measurement fixture so that the laser emitted by the laser source hits the screen through the collimation slit, record the position of the spot formed by the laser on the screen at this time as point B, and initialize the angle measured by the mobile phone at this time is zero;

[0049] S105: Fix the laser source and the screen, and place the p...

Embodiment 3

[0055] For example, taking a triangular prism with a prism angle of 60 degrees as an example, a helium-neon laser is used as the laser source during the measurement process, and the measurement method is as follows:

[0056] S201: Make the mobile phone close to a refraction side of the prism and initialize the angle of the mobile phone APP to zero at this time;

[0057] S202: Fix the prism still, let the mobile phone close to the other refraction edge of the prism, and directly read the prism angle as 60 degrees;

[0058] S203: Use the He-Ne laser as the laser source to measure the minimum deflection angle of the laser after being refracted twice by the prism;

[0059] Specifically, the triangular prism is fixed inside the triangular groove of the rotating platform, and the size of the triangular groove matches the size of the cross section of the prism; then, the rotating platform is continuously adjusted until the minimum deflection angle is found; then, the mobile phone is ...

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Abstract

The invention provides a prism refractive index measuring device and a method based on a mobile phone APP. The measuring device comprises a laser source, a rotating platform and an angle measuring clamp, the laser source is used for outputting laser; the rotating platform is used for adjusting the direction of the prism to be measured relative to the laser; and the angle measuring clamp is used for measuring a first light direction before the laser is refracted by the triangular prism and a second light direction after the laser is refracted by the triangular prism by using the mobile phone. The measuring device is simple in structure and easy to manufacture, the cost is greatly saved, in the actual angle measuring process, the two functions of angle measurement and refractive index calculation are achieved through a gyroscope sensor and an accelerometer of a mobile phone on the basis of a mobile phone APP, the link of manual calculation is omitted, and the measuring method is simple and rapid.

Description

technical field [0001] The invention relates to the technical field of refractive index measurement, in particular to a device and method for measuring the refractive index of a prism based on a mobile phone APP. Background technique [0002] At present, in the experimental teaching of measuring the refractive index of prisms, spectrometers are generally used to measure the minimum deflection angle and prism angle after the light is refracted twice by the prism. Among them, the adjustment of the spectrometer is very cumbersome and complicated (refer to "Zhang Yanan, Xu Fei, Chen Yulin. The adjustment method of measuring the vertex angle of a prism with a spectrometer [J]. Experimental Science and Technology, 2008(03): 33-34+97. ”), not easy to operate. [0003] With the rapid development of society, smart phones have entered people's daily life and become an indispensable item for people. Generally, smart phones are equipped with various sensors such as force, heat, sound, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
CPCG01M11/0228G01M11/0214
Inventor 孙春志唐佐侠李晓伟马艳彬孙丹阳乔馨莉汪志国
Owner SHANGQIU NORMAL UNIVERSITY
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