CN103792208B - Device and method for measuring optical and geometrical parameters of glass wall - Google Patents
Device and method for measuring optical and geometrical parameters of glass wall Download PDFInfo
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- CN103792208B CN103792208B CN201410070026.3A CN201410070026A CN103792208B CN 103792208 B CN103792208 B CN 103792208B CN 201410070026 A CN201410070026 A CN 201410070026A CN 103792208 B CN103792208 B CN 103792208B
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Abstract
The invention discloses a device for measuring optical and geometrical parameters of a glass wall. According to the device, a cylindrical glass container to be measured is arranged on one side on a bracket, and an upper semiconductor laser and a lower semiconductor laser are arranged on the other side of the bracket; a light scattering imaging layer formed by white paint or white glass printing ink is locally arranged on an outer surface of the wall of the cylindrical glass container to be measured. The measurement method comprises the following steps: filling transparent liquid with known refractive index into the cylindrical glass container to be measured, allowing laser beams emitted from the upper semiconductor laser and the lower semiconductor laser to scatter through the light scattering imaging layer, generating total reflection in the process of allowing the scattered light to enter an interface between the glass container and a medium in the container, forming large elliptical dark spots and small elliptical dark spots on the light scattering imaging layer, and calculating the optical and geometrical parameters of the glass wall to be measured according to a relationship between the refractive index and wall thickness and the lengths of long axes of the small and large elliptical dark spots. The device has the advantages of simple structure and method, high measurement speed, high precision and simplicity in implementation.
Description
Technical field
The invention belongs to field of optical measuring technologies, be specifically related to measurement mechanism and the measuring method of glass wall optics, geometric parameter.
Background technology
The popularity that glass container and glass tube use is well-known, due to its excellent stable chemistry, optics and mechanical property, become requisite utensil and material in the field of industrial productions such as chemical, food hygiene, electric light source, sun power and laboratory and scientific research, so the optics of glass wall is, the measurement of geometric parameter becomes indispensable link in its manufacture and use.
Traditional glass container and the measuring method of wall thickness of glass tube have ultrasonic method of measuring and capacitance measurement, because its measuring process is complicated, equipment operating difficulty is large and measuring accuracy is poor, has affected its propagation and employment.Adopt in recent years optical method for measuring glass wall optics, the technology of geometric parameter is can stood this professional domain technician's abundant concern, patent publication No. is that CN102809351A denomination of invention is the patent of invention of " transparent and translucent glass bottle Wall Thickness Testing Device and method ", patent publication No. is CN1049492C, denomination of invention is the patent of invention for " measurement of transparent container wall thickness ", a kind of measuring method and device that utilizes laser and photoelectric sensor to measure vierics wall thickness is provided, it is characterized in that utilizing laser beam oblique incidence glass wall, in wall, outside surface is penetrated distance between the two-beam of formation and the funtcional relationship between wall thickness to incident beam reflexed, measure the thickness of glass wall.Its deficiency is, measuring system complexity is larger for the measuring error of thin-walled pressure vessel wall thickness, and cannot obtain the optical parametric of wall.Patent publication No. is the patent of invention that CN101701912A denomination of invention is " a kind of method of nondestructive measurement of refractive index of transparent capillary wall and device ", disclose a kind of directional light that utilizes and assembled the relation between focal position and tube wall refractive index by the kapillary of known refractive index liquid is housed, measured the method and apparatus of tube wall refractive index.But its measuring system is complicated, and debugging difficulty is large, and particularly the physical dimension R of tube wall, r must be known, and this makes its application have certain limitation.
Summary of the invention
A technical matters to be solved by this invention is to overcome the deficiency of above-mentioned patent, and a kind of optics and geometric parameter measurement device of simple in structure, cost is low, measuring accuracy is high glass wall is provided.
Another technical matters to be solved by this invention is to provide for the optics of glass wall and geometric parameter measurement device the measuring method that a kind of method is simple, easy and simple to handle, measuring accuracy is higher.
Solving the problems of the technologies described above adopted technical scheme is: on support, a side arranges cylindric glass container to be measured, opposite side arranges semiconductor-on-insulator laser instrument and lower semiconductor laser, and the light scattering imaging layer that one deck white paint or white glass ink form is set in cylindric glass container wall outside surface to be measured part.
Cylindric glass container 5 wall outside surfaces of the present invention are 55%～70 ﹪ to the transmissivity of green laser after light scattering imaging layer is set.
Adopt above-mentioned measurement mechanism to measure the method for optics and the geometric parameter of cylindric glass container wall, by following step, formed:
1, at the local location of cylindric glass container sidewall outside surface to be measured, silk-screen one deck white glass ink or spraying one deck white paint form light scattering imaging layer, and light scattering imaging layer is 70%～80 ﹪ to the transmissivity of green laser.
2, in cylindric glass container to be measured, be filled with the transparency liquid of known refractive index, liquid level is between semiconductor-on-insulator laser instrument and the center line of lower semiconductor laser.
3, connect the power supply of lower semiconductor laser, the laser beam producing is normally incident on the light scattering imaging layer of cylindric glass container lower sidewall outside surface to be measured, on light scattering imaging layer, form the large oval blackening centered by laser beam incident point, the major axis of large oval blackening is parallel with the center line of cylindric glass container to be measured, measure the long axis length of large oval blackening, the pass between the refractive index of the refractive index of cylindric glass container wall, wall thickness and in-built liquid and the long axis length of large oval blackening is:
(1), in formula, n is the refractive index of liquid in cylindric glass container, the long axis length that L is large oval blackening, and unit is mm, n
xfor the refractive index of cylindric glass container wall, the sidewall thickness that △ R is cylindric glass container, unit is mm.
4, connect the power supply of semiconductor-on-insulator laser instrument, the laser beam producing is normally incident on the light scattering imaging layer of cylindric glass container side wall upper part outside surface to be measured, on light scattering imaging layer, form the little oval blackening centered by laser beam incident point, the major axis of little oval blackening is parallel with the center line of cylindric glass container to be measured, measure the long axis length of little oval blackening, the pass between the long axis length of the refractive index of cylindric glass container wall, wall thickness and little oval blackening is:
(2) in formula, n
xfor the refractive index of cylindric glass container wall, the long axis length that l is little oval blackening, the sidewall thickness that △ R is cylindric glass container, unit is mm.
5, by the long axis length value l substitution (1) of the long axis length value L of the refractive index value n of liquid in cylindric glass container, large oval blackening, little oval blackening, (2) formula, solve (1), (2) formula system of equations, obtain n
x, the value of △ R.
In the present invention, laser beam impinges perpendicularly on glass container outside surface light scattering imaging layer, during by light scattering imaging layer, owing to being subject to the scattering process of a large amount of micron order white pigment granules in light scattering imaging layer, become the pointolite of high divergence, radial light enter glass container wall and incide wall and the interface of refractive index known media after, the light that meets total reflection condition by the boundary reflection of glass and known media to light scattering imaging layer, on light scattering imaging layer, form the oval blackening centered by incident luminous point, the oval long axis length of blackening and refractive index and the wall thickness of glass container wall are closely related, by solving equation group, calculate optics and the geometric parameter of glass container.The present invention has structure and method is simple, cost is low, measuring speed is fast, precision is high and easy to implement, the generation of the optical imagery relevant with wall thickness to glass wall refractive index, do not need debugging, illumination is aobvious, simultaneously applied widely, can measure refractive index and the wall thickness of clear glass wall, also can measure refractive index and the wall thickness of translucent glass wall.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the oval blackening photo that adopts the embodiment of the present invention 1 measurement device amount of glass barrel refractive index and wall thickness.
Embodiment
Below in conjunction with accompanying drawing and example, the present invention is described in more detail, but the invention is not restricted to these embodiment.
Embodiment 1
In Fig. 1, the optics of the glass wall of the present embodiment and geometric parameter measurement device are connected and are formed by light scattering imaging layer 1, semiconductor-on-insulator laser instrument 2, lower semiconductor laser 3, support 4.
Cylindric glass container 5 to be measured is placed on support 4 one sides, at cylindric glass container 5 wall outside surface silk-screens to be measured, launching plane is that circular white glass ink forms light scattering imaging layer 1, it is rectangle or other shape that the geometric configuration of light scattering imaging layer 1 also can be sprayed into expansion shape, not being subject to the restriction of shape, is 55%～70 ﹪ to the transmissivity of green laser after cylindric glass container 5 walls of surperficial silk-screen light scattering imaging layer 1.The opposite side top of support 4 is fixedly connected semiconductor-on-insulator laser instrument 2 is installed with screw threads for fastening connector, the bottom of support 4 is fixedly connected lower semiconductor laser 3 is installed with screw threads for fastening connector, and semiconductor-on-insulator laser instrument 2 and lower semiconductor laser 3 are for generation of laser.
Use the optics of above-mentioned glass wall and the method for geometric parameter measurement measurement device amount of glass barrel optics and geometric parameter to be formed by following step:
1, at the local location of the glass cylinder barrel sidewall outside surface to be measured of capacity 1000ml, external diameter 65.65mm, silk-screen one deck white glass ink forms light scattering imaging layer 1, and the transmissivity of 1 pair of green laser of light scattering imaging layer is 70%～80 ﹪.
2, in glass cylinder to be measured, packing known refractive index n into is 1.3613 absolute ethyl alcohol, absolute ethyl alcohol liquid level between semiconductor-on-insulator laser instrument 2 and lower semiconductor laser 3 center lines, under anhydrous alcohol solution identity distance the distance of semiconductor laser 3 center lines be between semiconductor-on-insulator laser instrument 2 and lower semiconductor laser 3 center lines distance 2/3.
3, connect the power supply of lower semiconductor laser 3, the laser beam producing is normally incident on the light scattering imaging layer 1 of glass cylinder barrel lower external face to be measured, laser beam is during by light scattering imaging layer 1, owing to being subject to the scattering process of a large amount of micron order white pigment granules in light scattering imaging layer 1, become the pointolite of high divergence, radial light enter glass cylinder barrel and incide barrel and the interface of absolute ethyl alcohol after, the light that meets total reflection condition by the boundary reflection of glass and absolute ethyl alcohol to light scattering imaging layer 1, on light scattering imaging layer 1, form the large oval blackening centered by incident luminous point, the major axis of large oval blackening is parallel with the center line of glass cylinder to be measured, measure the long axis length of large oval blackening, the refractive index of glass cylinder barrel, pass between the refractive index of wall thickness and in-built absolute ethyl alcohol and the long axis length of large oval blackening is:
(1) in formula, n is that in glass cylinder, the refractive index n of ethanol is that 1.3613, L is the long axis length of large oval blackening, and L is 22.3mm, n
xfor the refractive index of glass cylinder barrel to be measured, △ R is the thickness of glass cylinder barrel to be measured, and unit is mm.
4, connect the power supply of semiconductor-on-insulator laser instrument 2, the laser beam producing is normally incident on the light scattering imaging layer 1 of glass cylinder barrel outer surface of upper to be measured, on light scattering imaging layer 1, form the little oval blackening centered by laser beam incident point, imaging process is identical with large oval blackening, the major axis of little oval blackening is parallel with the center line of glass cylinder to be measured, measure the long axis length of little oval blackening, the pass between the long axis length of the refractive index of glass cylinder barrel, wall thickness and little oval blackening is:
(2) in formula, the long axis length that l is little oval blackening, l is 8.1mm, n
xfor the refractive index of glass cylinder barrel to be measured, △ R is glass cylinder barrel thickness, and unit is mm.
5, by the long axis length value l substitution (1) of the long axis length value L of the refractive index value n of absolute ethyl alcohol in glass cylinder, large oval blackening, little oval blackening, (2) formula, solve (1), (2) formula system of equations, obtain n
xbe that 1.4591, △ R is 2.152mm.
Embodiment 2
In the present embodiment, at the locally sprayed one deck white of cylindric glass container 5 sidewall outside surface to be measured paint, launching plane is the circular light scattering imaging layer 1 that forms, it is rectangle or other shape that the geometric configuration of light scattering imaging layer 1 also can be sprayed into expansion shape, be not subject to the restriction of shape, cylindric glass container 5 walls of surface spraying light scattering imaging layer 1 are 55%～70 ﹪ to the transmissivity of green laser.The connecting relation of other parts and parts is identical with embodiment 1.
Adopt the optics of cylindric glass container 5 sidewalls of the present embodiment measurement device identical with embodiment 1 with the method for geometric parameter.
Claims (2)
1. the optics of a glass wall and geometric parameter measurement device, it is characterized in that: in the upper side of support (4), cylindric glass container to be measured (5) is set, opposite side arranges semiconductor-on-insulator laser instrument (2) and lower semiconductor laser (3), the light scattering imaging layer (1) that one deck white paint or white glass ink form is set in cylindric glass container to be measured (5) wall outside surface part, and light scattering imaging layer (1) is 55%～70 ﹪ to the transmissivity of green laser.
2. right to use requires optics and the optics of the cylindric glass container of geometric parameter measurement measurement device (5) wall and a method for geometric parameter for 1 glass wall, it is characterized in that being comprised of following step:
1) at the local location of cylindric glass container to be measured (5) sidewall outside surface, silk-screen one deck white glass ink or spraying one deck white paint form light scattering imaging layer (1), and light scattering imaging layer (1) is 55%～70 ﹪ to the transmissivity of green laser;
2) in cylindric glass container to be measured (5), be filled with the transparency liquid of known refractive index, liquid level is positioned between semiconductor-on-insulator laser instrument (2) and the center line of lower semiconductor laser (3);
3) connect the power supply of lower semiconductor laser (3), the laser beam producing is normally incident on the light scattering imaging layer (1) of cylindric glass container to be measured (5) lower sidewall outside surface, at the upper large oval blackening forming centered by laser beam incident point of light scattering imaging layer (1), the major axis of large oval blackening is parallel with the center line of cylindric glass container to be measured (5), measure the long axis length of large oval blackening, the refractive index of refractive index, wall thickness and in-built liquid of cylindric glass container (5) wall and the pass between the long axis length of large oval blackening are:
(1), in formula, n is the refractive index of liquid in cylindric glass container (5), the long axis length that L is large oval blackening, and unit is mm, n
xfor the refractive index of cylindric glass container (5) wall, △ R is the sidewall thickness of cylindric glass container (5), and unit is mm;
4) connect the power supply of semiconductor-on-insulator laser instrument (2), the laser beam producing is normally incident on the light scattering imaging layer (1) of cylindric glass container to be measured (5) side wall upper part outside surface, at the upper little oval blackening forming centered by laser beam incident point of light scattering imaging layer (1), the major axis of little oval blackening is parallel with the center line of cylindric glass container to be measured (5), measure the long axis length of little oval blackening, the pass between the long axis length of refractive index, wall thickness and the little oval blackening of cylindric glass container (5) wall is:
(2) in formula, n
xfor the refractive index of cylindric glass container (5) wall, the long axis length that l is little oval blackening, △ R is the sidewall thickness of cylindric glass container (5), and unit is mm;
5) by refractive index value n, the long axis length value L of large oval blackening, the long axis length value l substitution (1) of little oval blackening, (2) formula of liquid in cylindric glass container (5), solve (1), (2) formula system of equations, obtain n
x, the value of △ R.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104240572A (en) * | 2014-09-28 | 2014-12-24 | 江南大学 | Refractometer for measuring refractive index of transparent liquid |
| JP6713651B2 (en) * | 2015-12-28 | 2020-06-24 | 有限会社折原製作所 | Surface refractive index measuring method and surface stress measuring method using the same |
| CN113790674A (en) * | 2021-08-06 | 2021-12-14 | 河北光兴半导体技术有限公司 | Measuring method, processor and measuring device for glass product |
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| EP1288613A2 (en) * | 2001-08-30 | 2003-03-05 | Owens-Brockway Glass Container Inc. | Sidewall thickness measurement with a line shaped light beam or for several transparent containers |
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| US7920257B2 (en) * | 2008-08-27 | 2011-04-05 | Corning Incorporated | Systems and methods for determining the shape of glass sheets |
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|---|---|---|---|---|
| EP1288613A2 (en) * | 2001-08-30 | 2003-03-05 | Owens-Brockway Glass Container Inc. | Sidewall thickness measurement with a line shaped light beam or for several transparent containers |
| CN2546905Y (en) * | 2002-05-28 | 2003-04-23 | 南京师范大学 | Optical parallel multi-channel imaging instrument |
| CN1497023A (en) * | 2002-10-10 | 2004-05-19 | 柯尼卡株式会社 | UV ray solidifying ink and imaging method |
| CN101776572A (en) * | 2010-03-05 | 2010-07-14 | 陕西师范大学 | Liquid refractive index CCD real-time measuring device and measuring method |
| CN101776571A (en) * | 2010-03-05 | 2010-07-14 | 陕西师范大学 | Liquid refractive index real-time measuring device and on-line measuring method |
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| 双路补偿法的玻璃厚度测量技术;王玉田等;《传感技术学报》;20070615;第20卷(第06期);1428-1431 * |
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