CN105333980B - Tempered glass surface stress measurement instrument - Google Patents
Tempered glass surface stress measurement instrument Download PDFInfo
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- CN105333980B CN105333980B CN201510844432.5A CN201510844432A CN105333980B CN 105333980 B CN105333980 B CN 105333980B CN 201510844432 A CN201510844432 A CN 201510844432A CN 105333980 B CN105333980 B CN 105333980B
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- 238000005259 measurement Methods 0.000 title claims abstract description 31
- 239000005341 toughened glass Substances 0.000 title claims abstract description 27
- 239000011521 glass Substances 0.000 claims abstract description 63
- 238000003384 imaging method Methods 0.000 claims abstract description 53
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 230000010287 polarization Effects 0.000 claims description 7
- 230000000644 propagated effect Effects 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000006058 strengthened glass Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
Abstract
The present invention relates to stress detection devices, more particularly to a kind of tempered glass surface stress measurement instrument, including light source, photorefractive element, imaging unit, photorefractive element is located at the light emitting direction of light source, for placing glass to be measured, the light that light source issues enters imaging unit after photorefractive element reflects and is imaged, it is characterized in that, the photorefractive element is that first refractive prism and the second refracting prisms are provided with along optical path direction, the imaging unit includes lens group, polarising means and imaging sensor, the front end of lens group is located at the anaclasis direction of the second refracting prisms, the rear end of lens group is equipped with polarising means, the rear end of polarising means is equipped with imaging sensor.Since the light that light source issues is coupled into the second refracting prisms along this part light that inside glass is propagated after the total reflection of first refractive prism, the brightness of image that thus imaging unit receives does not decay, contrast between bright fringes and dark fringe is high, striped sharpness of border, improves measurement accuracy.
Description
Technical field
The present invention relates to stress detection device more particularly to a kind of tempered glass surface stress measurement instrument.
Background technique
It is known that tempered glass is also known as strengthened glass, it is a kind of prestressed glass, usually using chemically or physically
Method forms compression in glass surface, and glass bears to offset surface layer pressure first when external force, so that bearing capacity is improved,
Thus tempered glass is widely used in the fields such as building doors and windows, glass curtain wall, electronic instrument.Although the glass handled by tempering
Due to generating stress to improve its bearing capacity, but this stress is usually extremely non-uniform, can reduce tempered glass system
The mechanical strength and thermal stability of product, influence the safe handling of glassware, can even occur to reveal phenomenon when serious.Especially
With flourishing for touch-control industry, the specification requirement of touch-control product itself is also increasingly stringent, since touch panel is by outside
Applying pressure goes the function mode for carrying out inductive component to reach using effect, therefore the mechanical compressive resistance of product is major factory
The important specification and index of quotient.For optical glass, the presence of larger stress has also seriously affected optical clarity and at image quality
Amount.Thus, for the service performance for guaranteeing tempered glass article, the stress of tempered glass will be controlled within the specified scope, this will
It asks and the surface stress of tempered glass is detected.
Common tempered glass surface stress instrument includes light source, refracting prisms, eyepiece, industrial camera, folding currently on the market
The light direction of the launch that prism is located at light source is penetrated, one end of eyepiece is located at the anaclasis direction of refracting prisms, and the other end connects work
Industry camera, using this stress gauge detect tempered glass surface stress when, by glass to be measured be placed on prism surface make prism with
It fits, and the light that light source issues is incident on refracting prisms, is totally reflected in the contact surface of refracting prisms and glass to be measured.
Since tempered glass surface is there are stress, be incident on glass surface total reflection light can be generated under the action of stressor layers it is two-fold
It penetrates, forms the two mutually perpendicular light beams in beam polarization direction, which is known by being converted into after eyepiece, industrial camera
Other two groups striped column bright, dark fringe is alternate pass through the position in two groups of striped column of comparison between corresponding bright fringes or dark fringe
Set the stress that corresponding relationship calculates glass surface.However, when measuring tempered glass surface stress using existing stress gauge, although light
Available interference fringe image after the light that source issues is totally reflected through the contact surface of refracting prisms and glass to be measured, still
Since the light for having part to meet waveguide mode after total reflection is emitted after surface layer of glass to be measured constraint from glass end face, outgoing
The brightness of image decaying that the loss of this part luminous energy causes industrial camera to receive, brightness of image decaying cause bright fringes and dark fringe
Between contrast be lower, striped obscure boundary is clear.Moreover, the filaments of sun in the interference fringe image that existing stress gauge obtains when measuring
Line is thinner, and when image procossing can automatically select the corresponding relationship in two groups of stripeds column of comparison between corresponding dark fringe, to count
Calculate the stress on tempered glass surface.Since the contrast between dark fringe and bright fringes is low, and dark fringe obscure boundary is clear, figure
As just can not accurately obtain the corresponding relationship in two groups of striped column between corresponding dark fringe when processing, existing stress gauge is caused to measure
Error is big, and measurement accuracy is low.
Summary of the invention
Present invention aim to address above-mentioned the deficiencies in the prior art, provide that a kind of measurement error is small, measurement accuracy is high
Tempered glass surface stress measurement instrument.
The present invention solves technical solution used by above-mentioned the deficiencies in the prior art:
A kind of tempered glass surface stress measurement instrument, including light source, photorefractive element, imaging unit, photorefractive element position
In the light emitting direction of light source, for placing glass to be measured, the light that light source issues enters imaging unit after photorefractive element reflects
Imaging, which is characterized in that the photorefractive element is that first refractive prism and the second refracting prisms are provided with along optical path direction,
The imaging unit includes lens group, polarising means and imaging sensor, and the front end of lens group is located at the second refracting prisms
Anaclasis direction, the rear end of lens group are equipped with polarising means, and the rear end of polarising means is equipped with imaging sensor.
First refractive prism and the second refracting prisms of the present invention are isoceles triangle prism, and the master that light source issues
Waist of the light perpendicular to first refractive prism.
First refractive prism of the present invention is identical as the size on the second refracting prisms bottom edge, and first refractive prism bottom
The sum of the size on side and the size on the second refracting prisms bottom edge are less than or equal to the size of glass to be measured.
First refractive prism and the second refracting prisms of the present invention connect setting.
Light source of the present invention is the monochromatic source that wavelength is 500-900nm range.
Convergent lens is provided between light source of the present invention and first refractive prism, the light that light source issues is concentrated
Mirror is incident on first refractive prism after assembling, and the distance between light source, convergent lens and first refractive prism meet first-order theory
Formula.
It is provided with band pass filter in optical path between light source and imaging sensor of the present invention, band pass filter
Half-peak breadth≤3nm.
It is additionally provided with attenuator in optical path between light source and imaging sensor of the present invention, can according to need to light
Line power is adjusted.
Polarising means of the present invention is spliced by the mutually perpendicular polarizing film in two panels polarization direction.
Imaging sensor of the present invention can be one of CCD or CMOS, be also possible to based on CCD's or CMOS
Industrial camera.
The invention has the advantages that since the photorefractive element of stress detector of the present invention is provided with along optical path direction
First refractive prism and the second refracting prisms, glass to be measured are placed on first refractive prism and the second refracting prisms, light source
The light of transmitting is incident on after first refractive prism, is totally reflected in first refractive prism and the contact surface of glass to be measured,
In there is part to meet the total reflection light of waveguide mode by after surface layer of glass to be measured constraint, propagated along inside glass.Due to along optical path
Direction is additionally provided with the second refracting prisms, this part total reflection light propagated along inside glass is coupled into the second refracting edge
Mirror, after the outgoing of the second refracting prisms, the imaging unit for entering the second refracting prisms rear end is imaged.Due to passing through first
It is not spread out of in glass end face to glass after refracting prisms in this part total reflection light that inside glass is propagated, but by coupling
It closes and is received after entering the second refracting prisms by imaging unit, thus the brightness of image that imaging unit receives does not decay, bright wisp
Contrast between line and dark fringe is high, striped sharpness of border.Since the image that imaging unit receives is by passing through the first folding
It being generated after penetrating prism in this part of total reflection light interference that inside glass is propagated, bright fringes is thinner in interference fringe image,
The corresponding relationship in two groups of striped column between corresponding bright fringes can be automatically selected when image procossing, since bright fringes is than more visible,
And the contrast between bright fringes and dark fringe is high, thus corresponding bright wisp in two groups of striped column can be accurately obtained when image procossing
Corresponding relationship between line reduces measurement error so that accuracy computation goes out glass surface stress, improves measurement accuracy.Make
For preferred embodiment, first refractive prism and the second refracting prisms of the present invention are isoceles triangle prism, and light source issues
Chief ray perpendicular to first refractive prism waist, since first refractive prism and the second refracting prisms are isoceles triangle rib
Mirror, thus will be emitted in a manner of perpendicular to the second refracting prisms waist perpendicular to the chief ray of first refractive prism waist, key light
Line is vertically incident and is emitted, and substantially reduces luminous energy loss, improves measurement accuracy.Due to first refractive prism and the second folding
The size for penetrating prism bottom edge is identical, and the size on first refractive prism bottom edge and the sum of the size on the second refracting prisms bottom edge are less than
Or the size equal to glass to be measured, this part total reflection light propagated along inside glass to be measured can be all coupled to the second folding
Prism is penetrated, light is avoided and is emitted to outside glass from glass end face and luminous energy is caused to be lost, improve measurement accuracy.First refractive
Prism connects setting with the second refracting prisms, can be further improved the measurement accuracy of stress detector of the present invention.
Detailed description of the invention
A kind of structural schematic diagram and a kind of embodiment schematic diagram of the Fig. 1 for stress detector of the present invention.
Fig. 2 is another structural schematic diagram and a kind of preferred embodiment schematic diagram of stress detector of the present invention.
Fig. 3 is the interference fringe image obtained when being measured using existing glass strain instrument.
Fig. 4 is the interference fringe image obtained when being measured using stress detector of the present invention.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It defines in the following description
Basic principle of the invention can be applied to other embodiments, deformation scheme, improvement project, equivalent program and do not carry on the back
Other technologies scheme from the spirit and scope of the present invention.
Embodiment one
Fig. 1 shows a kind of example structure schematic diagram of stress detector of the present invention.As shown in Figure 1, the present embodiment institute
The tempered glass surface stress measurement instrument stated, including light source 10, photorefractive element, imaging unit, photorefractive element are located at light source
Light emitting direction, for placing glass 70 to be measured, the light of light source transmitting enters imaging unit after refracting element reflects and is imaged.By
It is that first refractive prism 20 and the second folding are provided with along optical path direction that Fig. 1, which can be seen that photorefractive element described in the present embodiment,
Prism 30 is penetrated, the imaging unit includes lens group 40, polarising means 50 and imaging sensor 60, the front end position of lens group 40
In the anaclasis direction of the second refracting prisms 30, the rear end of lens group 40 connects polarising means 50, and polarising means is for will be from the
The light ingredient of two refracting prisms outgoing be separated into the vibration parallel with the contact surface of the second refracting prisms relative to glass to be measured and
Two kinds of light ingredients of vertical vibration, both light ingredients are significantly identified as two groups bright, dark fringe is alternate striped column.Polarization
The rear end of device 50 is equipped with imaging sensor 60.For the ease of imaging sensor 60 receive clear image, the second refracting prisms 30,
The distance between lens group 40 and imaging sensor 60 meet Gaussian optics formula, it may be assumed thatWherein, d2It is saturating
The distance between microscope group and imaging sensor, d1For the distance between the second refracting prisms and lens group, f is the coke of lens group
Away from.
The glass handled through tempering can generate stressor layers on its surface, be incident on the total reflection light of glass surface in its stress
Birefringent, the light beams that beam polarization direction is orthogonal and the direction of propagation is different of formation two, the two-beam can be generated under the action of layer
Beam is converted by imaging unit and is arranged convenient for two groups of stripeds bright, that dark fringe is alternate of identification, and two groups of striped column of comparison are passed through
In corresponding relationship between corresponding bright fringes or dark fringe calculate the stress on tempered glass surface.But issued due to light source
Light has part to meet the total reflection light of waveguide mode by glass after refracting prisms and glass contact face to be measured are totally reflected
It propagates to glass end face along inside glass after the constraint of surface layer to be emitted, this part luminous energy loss of outgoing causes imaging unit to receive
Brightness of image decaying, brightness of image decaying causes the contrast between bright fringes and dark fringe to be lower, as shown in figure 3, and
Dark fringe is thinner in the interference fringe image that imaging unit obtains, and when image procossing can automatically select in two groups of stripeds column of comparison
Corresponding relationship between corresponding dark fringe, since striped obscure boundary is clear between dark fringe and bright fringes, especially dark fringe
Obscure boundary is clear, and when image procossing is difficult to accurately obtain the corresponding relationship in two groups of stripeds column between corresponding dark fringe, causes to survey
Accuracy of measurement is low.In this regard, stress detector of the present invention is provided with first refractive prism and the second refracting prisms along optical path direction, along glass
This part total reflection light of glass internal communication is coupled into the second refracting prisms, after the outgoing of the second refracting prisms, enters
The imaging unit of second refracting prisms rear end is imaged.Due to after first refractive prism inside glass propagate this portion
Divide total reflection light not spread out of in glass end face to glass, but is coupled into after the second refracting prisms by imaging unit
It receives, thus the brightness of image that imaging unit receives does not decay, the contrast between bright fringes and dark fringe is high, meanwhile,
Since the image that imaging unit receives is this part total reflection by propagating after first refractive prism in inside glass
The interference of light generates, and bright fringes is thinner in interference fringe image, as shown in figure 4, can automatically select two groups of stripeds when image procossing
Corresponding relationship in column between corresponding bright fringes, since the boundary of bright fringes is very clear, and between bright fringes and dark fringe
Contrast is high, thus the corresponding relationship in two groups of striped column between corresponding bright fringes can be accurately obtained when image procossing, thus
Glass surface stress is accurately calculated, measurement error is reduced, improves measurement accuracy.
Embodiment two
Fig. 2 shows a kind of preferred embodiments of stress detector of the present invention.Stress detector as shown in Figure 2, including
Light source 10, first refractive prism 20, the second refracting prisms 30, lens group 40, polarising means 50 and imaging sensor 60, first
For placing glass 70 to be measured, the front end of lens group 40 is located at the second refracting prisms 30 for refracting prisms 20 and the second refracting prisms 30
Anaclasis direction, the rear end of lens group 40 are equipped with polarising means 50, and the rear end of polarising means 50 is equipped with imaging sensor 60.As
Preferred embodiment, first refractive prism 20 described in the present embodiment and the second refracting prisms 30 are isoceles triangle prism,
And the chief ray that issues of light source 10 is perpendicular to the waist of first refractive prism 20, thus perpendicular to the chief ray of first refractive prism waist
It will be emitted in a manner of perpendicular to the second refracting prisms waist, chief ray is vertically incident and is emitted, and substantially reduces luminous energy damage
Consumption, improves measurement accuracy.In the present embodiment, first refractive prism 20 is identical as the size on 30 bottom edge of the second refracting prisms, and
The sum of the size on first refractive prism bottom edge and the size on the second refracting prisms bottom edge are less than or equal to the size of glass 70 to be measured,
Thus the can be all coupled in this part total reflection light that inside glass is propagated after the total reflection of first refractive prism
Two refracting prisms 30 avoid light and are emitted to outside glass from glass end face and luminous energy is caused to be lost, improve measurement accuracy.From
Fig. 2 can be seen that first refractive prism 20 and connect with the second refracting prisms 30 setting, can be further improved stress of the present invention and surveys
Measure the measurement accuracy of instrument.
Light source 10 in the present embodiment is to launch the monochromatic light source with central wavelength, can exclude other waves
The influence of long light, to obtain clearly interference fringe image.Preferred center wavelength is 500-900nm range in the present embodiment
Monochromatic source.Since the light that light source issues is diverging light, in order to which the light for emitting light source is farthest incident on first refractive
Prism 20 is provided with convergent lens 11 in the present embodiment between light source 10 and first refractive prism 20, the light warp that light source issues
Convergent lens 11 assemble after be incident on first refractive prism, between light source 10, convergent lens 11 and first refractive prism 20 away from
From meeting Gaussian optics formula, it may be assumed thatWherein, d4For the distance between convergent lens and first refractive prism,
f0For the focal length of convergent lens, d3For the distance between light source and convergent lens.In order to easy to operate, measuring instrument of the present invention is also set
It is equipped with the lens carrier 14 for installing convergent lens 11, lens carrier is supported by the first support plate, the second support plate and third
Plate is constituted, wherein convergent lens is installed in the first support plate, the angle of the second support plate and the first support plate is 90 °, third branch
Fagging and the angle of the second support plate are 120 °, and when use places third support plate in a manner of perpendicular to workbench, light source
10 light issued are incident on first refractive prism 20 after the convergent lens in the first support plate is assembled.To issue light source
For chief ray perpendicular to the emitting edge of first refractive prism, the first support plate of lens carrier 14 is in that the direction parallel with emitting edge is set
It sets, thus first refractive prism is equilateral triangle prism at this time, in order to make the chief ray perpendicular to first refractive prism incidence side
It is emitted in a manner of being emitted side perpendicular to the second refracting prisms, the second refracting prisms are also equilateral triangle prism.Due to the first folding
It penetrates prism and the second refracting prisms is equilateral triangle prism, improve the integrated level of stress gauge of the present invention, make apparatus of the present invention
It takes up space smaller, it is structurally reasonable, it is easy-to-use.
Light source of the present invention may not be monochromatic source, in this regard, can be between light source and imaging sensor
Setting band pass filter, which is filtered the light that light source is launched, in optical path makes monochromatic light.Certainly, even if light source is single
Band pass filter can also be arranged in the optical path between light source and imaging sensor in color light source, to the light of light source transmitting into one
Step purification, makes the narrower monochromatic light of half-peak breadth.In the present embodiment, it is provided in the optical path between light source and convergent lens
Band pass filter 12, half-peak breadth≤3nm of band pass filter 12.In optical path between the present embodiment light source and imaging sensor also
Equipped with attenuator 13, user can be according to the actual situation adjusted light intensity.
Polarising means of the present invention is spliced by the mutually perpendicular polarizing film in two panels polarization direction, two panels polarization
Piece rear end is equipped with imaging sensor, and the imaging sensor can be one of CCD or CMOS, is also possible to based on CCD
Or the industrial camera of CMOS.In the present embodiment, imaging sensor is the industrial camera 61 based on CCD, is used for photoelectric conversion, will
Bright, dark fringe the optical signal conversion received is digital signal.
Preferably, imaging sensor 60 described in the present embodiment can also connect data processing as needed
Unit 80, data processing unit 80 realize the real-time acquisition to glass surface stress to be measured according to the input signal of imaging sensor
And analysis, complete the accurate detection of tempered glass surface stress.The data processing unit 80 can be with data processing software
General purpose computer or dedicated data processor.
When detecting tempered glass surface stress using stress detector of the present invention, first according to the size selection of glass to be measured
Suitable first refractive prism and the second refracting prisms, first refractive prism and the second refracting prisms for isoceles triangle prism when
It waits, the measurement accuracy of stress detector of the present invention is higher.When the bottom edge size of first refractive prism and the bottom of the second refracting prisms
Side size is identical, and the sum of size be less than or equal to glass to be measured size when, measurement accuracy is further improved.It will be to be measured
Glass is placed on first refractive prism and the second refracting prisms, keeps first refractive prism and the bottom edge of the second refracting prisms complete
It is in contact with glass to be measured, contact surface can drip a small amount of REFRACTIVE LIQUID so as to glass to be measured and first refractive prism and the second refracting edge
Mirror preferably fits, to improve measurement accuracy.Light source is adjusted, preferably makes light source with chief ray perpendicular to first refractive prism
The angle of emitting edge is arranged, and the light that light source issues is totally reflected in first refractive prism and the contact surface of glass to be measured, wherein
When the total reflection light that a part meets waveguide mode is propagated at the second refracting prisms after being fettered by surface layer of glass along inside glass,
The second refracting prisms are coupled into, after the outgoing of the second prism, the imaging unit of the second refracting prisms rear end is entered, is imaged
Lens group in unit is to the polarising means for being incident on rear end after the light progress appropriate adjustment received, by the light of polarising means
Significantly be identified as two groups are bright, dark fringe is alternate striped column, imaging sensor by the striped between the bright, dark phase received arrange into
After row photoelectric conversion, obtained electric signal is input to the accurate survey that data processing unit completes final tempering glass surface stress
Amount.
It should be understood by those skilled in the art that foregoing description and the embodiment of the present invention shown in the drawings are only used as illustrating
And it is not intended to limit the present invention.The purpose of the present invention has been fully and effectively achieved.Function and structural principle of the invention exists
It shows and illustrates in embodiment, under without departing from the principle, embodiments of the present invention can have any deformation or modification.
Claims (6)
1. a kind of tempered glass surface stress measurement instrument, including light source, photorefractive element, imaging unit, photorefractive element are located at
The light emitting direction of light source, for placing glass to be measured, the light that light source issues enter after photorefractive element reflects imaging unit at
Picture, which is characterized in that the photorefractive element is that first refractive prism and the second refracting prisms are provided with along optical path direction, institute
The imaging unit stated includes lens group, polarising means and imaging sensor, and the front end of lens group is located at the light of the second refracting prisms
Refractive direction, the rear end of lens group are equipped with polarising means, and the rear end of polarising means is equipped with imaging sensor, the first refractive
Prism and the second refracting prisms are isoceles triangle prism, and the chief ray that issues of light source is perpendicular to the waist of first refractive prism,
The first refractive prism is identical as the size on the second refracting prisms bottom edge, and the size and second on first refractive prism bottom edge
The sum of the size on refracting prisms bottom edge is less than or equal to the size of glass to be measured, the first refractive prism and the second refracting edge
Mirror connects setting, is provided with band pass filter in the optical path between the light source and imaging sensor, and the half of band pass filter
Peak width≤3nm.
2. tempered glass surface stress measurement instrument according to claim 1, which is characterized in that the light source is that wavelength is
The monochromatic source of 500-900nm range.
3. tempered glass surface stress measurement instrument according to claim 1, which is characterized in that the light source and the first folding
It penetrates and is provided with convergent lens between prism, the concentrated lens of light that light source issues are incident on first refractive prism after assembling, light source,
The distance between convergent lens and first refractive prism meet Gaussian optics formula.
4. tempered glass surface stress measurement instrument according to claim 1, which is characterized in that the light source and image passes
It is additionally provided with attenuator in optical path between sensor, light intensity is adjusted as needed.
5. tempered glass surface stress measurement instrument according to claim 1, which is characterized in that the polarising means is by two
The mutually perpendicular polarizing film in piece polarization direction is spliced.
6. tempered glass surface stress measurement instrument according to claim 1, which is characterized in that the imaging sensor is
One of CCD or CMOS.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510844432.5A CN105333980B (en) | 2015-11-27 | 2015-11-27 | Tempered glass surface stress measurement instrument |
| JP2018536327A JP2018534589A (en) | 2015-09-30 | 2016-09-30 | Glass surface stress meter and multi-tempered glass surface stress meter |
| PCT/CN2016/101161 WO2017054773A1 (en) | 2015-09-30 | 2016-09-30 | Glass surface stressmeter and repeatedly tempered glass surface stressmeter |
| US15/763,455 US11060930B2 (en) | 2015-09-30 | 2016-09-30 | Glass surface stress meter and multiple-tempered glass surface stress meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510844432.5A CN105333980B (en) | 2015-11-27 | 2015-11-27 | Tempered glass surface stress measurement instrument |
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| Publication Number | Publication Date |
|---|---|
| CN105333980A CN105333980A (en) | 2016-02-17 |
| CN105333980B true CN105333980B (en) | 2019-01-29 |
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| CN201510844432.5A Active CN105333980B (en) | 2015-09-30 | 2015-11-27 | Tempered glass surface stress measurement instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054773A1 (en) * | 2015-09-30 | 2017-04-06 | 苏州精创光学仪器有限公司 | Glass surface stressmeter and repeatedly tempered glass surface stressmeter |
| CN105758566B (en) * | 2016-04-11 | 2024-02-02 | 北京杰福科技有限公司 | Glass surface stress meter |
| CN106324730A (en) * | 2016-09-18 | 2017-01-11 | 北京杰福科技有限公司 | Prism and glass surface stress test device |
| CN106839983B (en) * | 2017-03-06 | 2024-01-02 | 苏州精创光学仪器有限公司 | Stress quadratic element detects all-in-one |
| CN111637956B (en) * | 2020-05-25 | 2021-11-16 | 湖北交投智能检测股份有限公司 | Bridge span monitoring system and monitoring method based on polarized light |
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| CN102062656A (en) * | 2010-12-31 | 2011-05-18 | 肖天长 | Glass surface stress tester |
| TW201245690A (en) * | 2011-03-18 | 2012-11-16 | Asahi Glass Co Ltd | Device for measuring surface stress of glass and method for measuring surface stress of glass |
| US9140543B1 (en) * | 2011-05-25 | 2015-09-22 | Corning Incorporated | Systems and methods for measuring the stress profile of ion-exchanged glass |
| CN203490010U (en) * | 2013-09-27 | 2014-03-19 | 中国建材检验认证集团股份有限公司 | Stress meter for measuring surface stress of toughened glass |
| CN103644990A (en) * | 2013-12-13 | 2014-03-19 | 苏州精创光学仪器有限公司 | Compact glass surface stress measuring instrument |
| CN205120285U (en) * | 2015-11-27 | 2016-03-30 | 苏州精创光学仪器有限公司 | Toughened glass surface stress measuring apparatu |
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2015
- 2015-11-27 CN CN201510844432.5A patent/CN105333980B/en active Active
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