A newton ring stress measuring device
A technology of stress measurement and Newton rings, applied in measuring devices, force/torque/work measuring instruments, optical devices, etc., can solve the problem of inability to accurately measure the stress of the glass body, and achieve the effect of improving measurement accuracy
Inactive Publication Date: 2018-04-03
XIAN UNIV OF SCI & TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide a Newton ring stress measuring device, which solves the problem that the existing Newton ring measuring device cannot accurately measure the stress received when the glass body is deformed
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Embodiment Construction
[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0013] A kind of Newton ring stress measuring device of the present invention, as figure 1 As shown, including the base 6, the sensor 7 is placed in the groove of the base 6, the probe of the sensor 7 is higher than the upper surface of the groove of the base 6, a plane mirror 10 is placed on the probe of the sensor 7, and a plano-convex lens 11 is placed on the plane mirror 10 (the plano-convex lens 11 can be approximated as a circular thin plate due to the large curvature radius R of the convex surface), the convex surface of the plano-convex lens 11 is in contact with the plane mirror 10, and the plane mirror 10 is not in contact with any other parts except the plano-convex lens 11 and the sensor 7. The sensor 7, the plane mirror 10, and the plano-convex lens 11 are coaxial, and an upper cover 5 is placed on the plane edge of the plano-con...
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The invention discloses a Newton ring stress measuring device. The Newton ring stress measuring device comprises a base. A sensor is placed in a groove of the base, a probe of the sensor is higher than the upper surface of the groove of the base, a plane mirror is placed on the probe of the sensor, a plano-convex lens is placed on the plane mirror, the convex surface of the plano-convex lens makes contact with the plane mirror, an upper cover is placed on the plane edge of the plano-convex lens and is connected with the base through fixing screws, and a gap is reserved between the upper cover and the base. A signal line of the sensor penetrates through a through hole in the base and is connected with a measuring instrument, and the measuring instrument is used for displaying stress collected by the sensor. By using the Newton ring stress measuring device, stress generated when a glass body deforms due to the tightness degree of screws can be accurately measured, and thus the curvature radius measuring accuracy is improved.
Description
technical field [0001] The invention belongs to the technical field of optical equipment, and in particular relates to a Newton ring stress measuring device. Background technique [0002] Newton's ring is a typical equal-thickness interference phenomenon and has a wide range of applications. It can be used to judge the concave and convex of the lens surface, measure the radius of curvature of the lens surface, accurately test the surface quality of optical components, and measure the refractive index of liquid. It is one of the important applications in optical measurement. One is to measure the radius of curvature of the plano-convex lens. In the traditional measurement method, the biggest influence on the measurement results is the Newton ring deformation stress caused by the different degrees of tightness of the three screws of the Newton ring instrument. Experiments show that under the same measurement conditions, the tighter the screws are, the greater the measurement e...
Claims
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IPC IPC(8): G01L5/00G01M11/00G01B11/255
CPCG01B11/255G01L5/00G01M11/00
Inventor 郭长立王守全冯小强郭朝霞杨易
Owner XIAN UNIV OF SCI & TECH