CN203551461U - Microscopic stress instrument - Google Patents
Microscopic stress instrument Download PDFInfo
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- CN203551461U CN203551461U CN201320634271.3U CN201320634271U CN203551461U CN 203551461 U CN203551461 U CN 203551461U CN 201320634271 U CN201320634271 U CN 201320634271U CN 203551461 U CN203551461 U CN 203551461U
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- image formation
- stress instrument
- worktable
- microscopic stress
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Abstract
The utility model relates to a microscopic stress instrument for testing birefringence interference fringes so as to analyze the degree of stress. The microscopic stress instrument provided by the utility model comprises a workbench, a microscope main body and a focusing support, wherein the workbench is internally provided with a light source; an installation hole is formed in the upper part of the workbench and right above the light source, and is internally provided with a polarizer and a dull polish glass plate, wherein a clearance is formed between the polarizer and the dull polish glass plate; the focusing support is fixed on the workbench, and is fixedly connected with the microscope main body; the microscope main body consists of a detection lens cone and at least one microscopy amplification optical path device positioned above the detection lens cone; the microscopy amplification optical path devices are fixedly connected with the detection lens cone. The detection lens cone is internally provided with a full-wave plate and a detection polarizer from bottom to top; a clearance is formed between the full-wave plate and the detection polarizer. The microscopic stress instrument provided by the utility model can test the thermal stress of micro objects, is convenient to use, has long service life, and can be connected with a video camera or a camera.
Description
Technical field
The utility model relates to a kind of optical device that utilizes optical instrument test or analysis of material, relates in particular to a kind of for testing birefringence interference fringe, with the microscopic stress instrument of analysis of material thermal stress size.
Background technology
Thermal stress claims again temperature changing stress, refers to when temperature change, and object is due to the mutual constraint between external constraint and inner each several part, makes its free to contract and expand and the stress that produces completely.
Glassware, in forming process, on the one hand, owing to having stood violent temperature variation, makes ectonexine produce thermograde; On the other hand, due to shape, the thickness of glassware various piece, be subject to cooling degree etc. all different, make goods inside produce irregular thermal stress.
This thermal stress, not only can reduce physical strength and the thermal stability of glassware, and can affect the optics homogeneity of glass.The intensity if thermal stress oversteps the extreme limit, glassware can break voluntarily.As the Medical injection medicine of being made by glass, in cold storage procedure, if the thermal stress of medicine bottle is excessive, can cause its glass inwall that " decortication " phenomenon occurs, tiny glass fibre drops from glass inwall, thereby the injection in medicine bottle is produced and polluted.If contaminated injection is expelled in human body, can produce harm to patient's health.And for example, the glass bulb that bulb in daily life, daylight lamp, electron tube etc. and pin join, thermal stress is crossed senior general affects its thermal stability, causes Leakage Gas and cracking in fluorescent tube, reduce glassware performance and used life, when serious, can cause to burst to cause personal injury accidents.And concerning optical glass, built-in thermal stress is excessive, is unfavorable for the cold working of perspective, and can affects the optical imagery effect of optical glass.Therefore, before glassware dispatches from the factory, need to test to its thermal stress, eliminate the excessive substandard products of thermal stress.
Except glassware, jewelry is in the process of processing, and particularly, in the operation of polishing and punch, its inside also can produce thermal stress.Thermal stress greatly to a certain extent time, can affect physical strength and the thermal stability of jewelry product, and causes it to break and damage.So detect in the process of jewelry character, the test of thermal stress is very important.
The stress ga(u)ge of prior art, by the worktable 1 of built-in light source
,with pick-up unit 2
,form.Worktable 1
,center, light source 4
,directly over, polarizer 5 is installed from bottom to top
,with ground glass plate 6
,, pick-up unit 2
,by a support 3
,with worktable 1
,be connected, and be positioned at polarizer 5
,with ground glass plate 6
,directly over.Pick-up unit 2
,in, be provided with full-wave plate 7 from bottom to top
,with analyser 8
,.The principle of its optical system is: first, and light source 4
,the light penetrating, by polarizer 5
,, complanation polarized light, and linearly polarized light is through ground glass plate 6
,, and see through inner existence after the testee of thermal stress, be just broken down into the mutually perpendicular ordinary light of direction of vibration and non-ordinary light.Due to the velocity of propagation difference of these two kinds of light, one fast one slow, therefore produced each other an optical path difference.And ordinary light and the optical path difference of non-ordinary light in same plane are reflected to analyser, be the interference color picture with stress characteristics.
Due to optical path difference, below 200-300nm time, interference color only present either overt or covert canescence, and optical path difference is less, and canescence is more difficult for showing.In addition,, when optical path difference has small change, interference color are difficult for differentiating variation, can not meet the accurate measurement of less optical path difference; Therefore, conventionally at analyser 8
,before put into full-wave plate 7
,, play the effect of sensitive.When the optical path difference of tested sample can with full-wave plate 7
,the mutual superposition of optical path difference or mutually reduce, in visual field, can present different interference fringes.
In general, the thermal stress intensity difference of testee, the color of interference fringe is also different; Therefore,, by observing the color of testee interference fringe, can judge the thermal stress size of this object.As the interference fringe of grey, represent that heat stress value is very high; Mauve interference fringe, represents that its heat stress value is relatively low.
This easy stress ga(u)ge is only suitable for the thermal stress of test bulky objects, and for the object of some micro-structures, the interference fringe color that it is measured is very light, and naked eyes cannot be differentiated at all.
Summary of the invention
One of the purpose of this utility model is to provide one can accurately measure various micro-structure element thermal stress, and the interference fringe image forming is clear, and the high microscopic stress instrument of resolution.
The utility model is achieved in that a kind of microscopic stress instrument, comprise that inside is equipped with the worktable of light source, directly over the top of described worktable, light source, be provided with a mounting hole, in this mounting hole, be provided with polarizer and ground glass plate from bottom to top, between described polarizer and ground glass plate, leave gap.The utility model also comprises microscope body and focusing support, and described focusing support is fixed on worktable, and is connected with microscope body.Described microscope body forms by detecting lens barrel and at least one micro-amplification light path device, and described micro-amplification light path device is positioned at the top of detecting lens barrel, and is connected with detection lens barrel.In described detection lens barrel, be provided with full-wave plate and analyser from bottom to top, between described full-wave plate and analyser, leave gap.
Described micro-amplification light path device comprises eyepiece device, image formation prism box and objective apparatus, is provided with eyepiece group in described eyepiece device.The top of described image formation prism box is trapezoidal, is provided with image formation prism in it.In described objective apparatus, be provided with object lens and zoom mirror group, described objective apparatus be arranged on image formation prism under, in the T-shaped cavity of image formation prism box bottom.The inclined-plane of described eyepiece device and image formation prism box outside is connected, and described image formation prism is erecting prism.
The both sides of described image formation prism box are provided with zoom handwheel, and its bottom is provided with a bevel gear.The top of described objective apparatus is provided with a linkage gear device, this toothed gearing, with zoom handwheel, bevel gear match.
Described objective apparatus consists of spiral-tube, connecting cylinder, zoom lens barrel and objective tube, and described connecting cylinder is placed in spiral-tube, and its bottom is connected with objective tube.One side of described connecting cylinder has guide groove, and described zoom lens barrel is placed in connecting cylinder, and the screw of its side, through the guide groove of connecting cylinder, is stuck in the helicla flute of spiral-tube.
Described focusing support is comprised of column and bracing frame, and the vertical plane of support frame as described above is provided with a slide block, has the chute matching with slide block on described column, and the centre of described slide block is provided with tooth bar.
A focusing handwheel is respectively established in described focusing support both sides, between described focusing handwheel, by a rack, is connected, and the tooth bar on this rack and slide block matches.
The corner of described focusing support is equipped with illuminating lamp on, and its light is invested the ground glass plate of worktable.
The side of described worktable is provided with light source regulator and upper illuminating lamp regulator, is also provided with a power switch on described worktable, the surface of described worktable, and the both sides of ground glass plate, are provided with the stage clip of at least two fixing test parts.
The top of described image formation prism box is connected to a data-out port.
Described light source is LED light source.
The invention has the beneficial effects as follows:
1. microscope and stress test are combined, the interference fringe of small transparent substance can be amplified to 7 to 45 times,
Can form clearly, interference fringe image that resolution is high, thereby solved the test difficult problem of small transparent substance thermal stress.
2. adopt LED to replace traditional tungsten halogen light source as birefringence, to produce the light source of system, not only make luminous energy
More concentrated, and can not produce temperatures involved to polarizing plate because LED belongs to cold light source, thus extended the serviceable life of polarizing plate.
3. image formation prism adopts erecting prism, therefore can see clear and upright interference fringe picture.Enlargement factor
Regulator can be accomplished continuous zoom, easy to use.
4. be provided with a data output end, the image of interference fringe can be outputed on video camera, camera or computer.
Accompanying drawing explanation
The structure cut-open view of the stress ga(u)ge of Fig. 1 prior art;
Fig. 2 structural representation of the present utility model;
Fig. 3 cut-open view of the present utility model;
The cut-open view of Fig. 4 the utility model objective apparatus;
The cut-open view of Fig. 5 the utility model focusing support.
Embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated:
The utility model has been researched and developed a kind of microscopic stress instrument.This microscopic stress instrument is comprised of worktable 1, microscope body 2 and focusing support 3.LED light source 4 is arranged in worktable 1,6 full-wave plates 7 of polarizer 5 and ground glass plate, analyser 8 and micro-amplification light path 9.Described light source 4, polarizer 5 and 6 of ground glass plates are arranged in the mounting hole 11 on worktable 1 top, and leave gap between the two.Focusing support 3 is fixed on worktable 1, and is connected with microscope body 2.Microscope body 2 is the most important optical modules of the utility model, by detecting lens barrel 21 and at least one micro-amplification light path device 22, forms.Detect in lens barrel 21 full-wave plate 7 and analyser 8 are installed, and analyser 8 is positioned at the top of full-wave plate 7.Micro-amplification light path device 22 is placed on the top of detecting lens barrel 21, and is connected with detection lens barrel 21.Like this, just can observe interference fringe on detected lens barrel 21 by micro-amplification light path device 22.
Micro-amplification light path device 22 of the present utility model, can be set to one, but in order to observe conveniently, is preferably set to two.Each micro-amplification light path device 22, forms by eyepiece device 23, image formation prism box 24 and objective apparatus 25.The interior eyepiece group 94 of eyepiece device 23, be provided with object lens 91 and zoom mirror group 92, and the upper part of image formation prism box 24 is trapezoidal in objective apparatus 25, and its inside is provided with erecting prism 93, and on its outside inclined-plane, eyepiece device 23 is installed.In the T-shaped cavity of image formation prism box 24 bottoms, under image formation prism 93, be equipped with objective apparatus 25.
The optical principle of said structure is: light emits from LED light source 4, after polarizer 5, becomes linearly polarized light, and this linearly polarized light, by ground glass plate 6, projects on testee.Because testee has thermal stress, after plane polarization light transmission testee, be broken down into mutually perpendicular ordinary light and non-ordinary light, due to the velocity of propagation difference of these two kinds of light, they have produced optical path difference each other.This optical path difference, by full-wave plate 7, has increased after sensitivity, then has been reflected on analyser 8, just in visual field, has occurred having the interference fringe image of stress characteristics.Afterwards, this interference fringe image is by the object lens 91 of micro-amplification light path 9, form stand upside down, by preliminary enlarged image.Then, by zoom mirror group 92, be further amplified to required multiple.Then, erecting prism 93, by the interference fringe of standing upside down, becomes upright image, is delivered in eyepiece group 94.Eyepiece group 94, by what amplified by object lens, is differentiated the further amplification of interference fringe clearly, reaches the degree that human eye can easily offer a clear explanation.
The utility model, in order to reach 7-45 amplification effect doubly, utilizes the zoom handwheel 26 of image formation prism box 24 both sides, carrys out the zoom lens barrel 254 in instrumentality lens device 25, and it is moved up and down.For realizing this function, objective apparatus 25 of the present utility model consists of spiral-tube 252, connecting cylinder 253, zoom lens barrel 254 and objective tube 255.The inwall of the outer wall of connecting cylinder 253 and spiral-tube 252 is connected, and its bottom and objective tube 255 are affixed, and have guide groove 256 in a side of connecting cylinder 253.Zoom lens barrel 254 is placed in the chamber of connecting cylinder 253, and its side is provided with a screw 257, and this screw 257, through the guide groove 256 of connecting cylinder 253, is stuck in the helicla flute 258 of spiral-tube 252.
The utility model is also provided with a bevel gear 261 in the bottom of zoom handwheel 26.When rotation zoom handwheel 26, linkage gear device 251 Vertical Meshing on this bevel gear 261 and objective apparatus 25 tops, make the rotation of the latter's occurred level, thereby drive spiral-tube 252 occurred levels of objective apparatus 25 to rotatablely move.Thus, in the vertical range of guide groove 256, the screw 257 of zoom lens barrel 254, in the interior slip of helicla flute 258, makes whole zoom lens barrel 254 upper and lower displacements, and produces spacing between objective tube 255.Zoom lens barrel 254 is larger with the spacing of objective tube 255, and enlargement factor is less.
Focusing support 3 of the present utility model is comprised of column 31 and bracing frame 32, and is provided with a slide block 33 at the vertical plane of bracing frame 32, and on column 31, has the chute 34 matching with slide block 33.In addition, the present invention is provided with a tooth bar 35 in the centre of slide block 33, and with a rack 37 by focusing support 3 both sides focusing handwheel 36 couple together.Like this, when rotating focusing handwheel 36, rack 37 engages with the tooth bar 35 on slide block 33, and the slide block 33 on bracing frame 32 is slided up and down in the chute 34 of column 31.Because bracing frame 32 and microscope body 2 are connected, moving up and down of bracing frame 32, has just driven moving up and down of microscope body 2, thereby reaches the effect of the focal length that regulates object lens 91.
In order more clearly to observe image, the present invention is equipped with illuminating lamp 38 in the corner of focusing support 3, and its light just in time projects on the ground glass plate 6 of worktable, so just the testee that is placed on ground glass plate 6 can be illuminated.Meanwhile, the utility model also the side of worktable 1 be provided with light source regulator 12, on illuminating lamp regulator 13 and power supply 14.Can, according to the needs of observation, regulate the intensity of LED light source 4, and the brightness of upper illuminating lamp 34.
The utility model is on the surface of worktable 1, and the both sides of ground glass plate 6 are provided with the stage clip 15 of at least two fixing test parts, in order to avoid during test, testee generation slippage, impact test effect.
For observed result being outputed on video camera, camera, the present invention is at the affixed data-out port 27 in the top of image formation prism box 24.
When using microscopic stress instrument of the present invention, first testee is placed on the ground glass plate 6 of worktable 1.Then, opening power 14, with light source regulator 12 and upper illuminating lamp regulator 13, regulates the brightness of LED light source 4 and upper illuminating lamp 34.Then, rotation focusing handwheel 36, the focal length of adjusting object lens 91.Human eye after focal length is aimed at, then rotates zoom handwheel 26, until can be seen interference fringe image clearly from eyepiece group 94.Finally, can be according to observe to obtain the color of interference fringe image, the thermal stress size of qualitative analysis testee from eyepiece group 94.
Claims (10)
1. a microscopic stress instrument, comprises that inside is equipped with the worktable of light source (4) (1); Directly over the top of described worktable (1), light source (4), be provided with a mounting hole (11), in this mounting hole (11), be provided with polarizer (5) and ground glass plate (6) from bottom to top, between described polarizer (5) and ground glass plate (6), leave gap; It is characterized in that: also comprise microscope body (2) and focusing support (3); It is upper that described focusing support (3) is fixed on worktable (1), and be connected with microscope body (2); Described microscope body (2) forms by detecting lens barrel (21) and at least one micro-amplification light path device (22); Described micro-amplification light path device (22) is positioned at the top of detecting lens barrel (21), and is connected with detection lens barrel (21); In described detection lens barrel (21), be provided with full-wave plate (7) and analyser (8) from bottom to top; Between described full-wave plate (7) and analyser (8), leave gap.
2. microscopic stress instrument according to claim 1, is characterized in that: described micro-amplification light path device (22) comprises eyepiece device (23), image formation prism box (24) and objective apparatus (25); In described eyepiece device (23), be provided with eyepiece group (94); The top of described image formation prism box (24) is trapezoidal, is provided with image formation prism (93) in it; In described objective apparatus (25), be provided with object lens (91) and zoom mirror group (92); Described objective apparatus (25) be arranged on image formation prism (93) under, in the T-shaped cavity of image formation prism box (24) bottom; Described eyepiece device (23) is connected with the inclined-plane of image formation prism box (24) outside; Described image formation prism (93) is erecting prism.
3. microscopic stress instrument according to claim 2, is characterized in that: the both sides of described image formation prism box (24) are provided with zoom handwheel (26), and its bottom is provided with a bevel gear (261); The top of described objective apparatus (25) is provided with a linkage gear device (251); This toothed gearing (251) matches with the bevel gear (261) of zoom handwheel (26).
4. microscopic stress instrument according to claim 2, is characterized in that: described objective apparatus (25) consists of spiral-tube (252), connecting cylinder (253), zoom lens barrel (254) and objective tube (255); Described connecting cylinder (253) is placed in spiral-tube (252), and its bottom is connected with objective tube (255); One side of described connecting cylinder (253) has guide groove (256), it is inner that described zoom lens barrel (254) is placed in connecting cylinder (253), the screw (257) of its side, through the guide groove (256) of connecting cylinder (253), is stuck in the helicla flute (258) of spiral-tube (251).
5. microscopic stress instrument according to claim 1, is characterized in that: described focusing support (3) is comprised of column (31) and bracing frame (32); The vertical plane of support frame as described above (32) is provided with a slide block (33), has the chute (34) matching with slide block (33) on described column (31); The centre of described slide block (33) is provided with tooth bar (35).
6. microscopic stress instrument according to claim 5, is characterized in that: a focusing handwheel (36) is respectively established in described focusing support (3) both sides, between described focusing handwheel (36), by a rack (37), is connected; This rack (37) matches with the tooth bar (35) on slide block (33).
7. microscopic stress instrument according to claim 5, is characterized in that: the corner of described focusing support (3) is equipped with illuminating lamp on (38), and its light is invested the ground glass plate (6) of worktable.
8. microscopic stress instrument according to claim 1, is characterized in that: the side of described worktable (1) is provided with light source regulator (12) and upper illuminating lamp regulator (13); On described worktable (1), be also provided with a power switch (14); The surface of described worktable (1), the both sides of ground glass plate (6), are provided with the stage clip (15) of at least two fixing test parts.
9. microscopic stress instrument according to claim 2, is characterized in that: the top of described image formation prism box (24) is connected to a data-out port (27).
10. microscopic stress instrument according to claim 1, is characterized in that: described light source (4) is LED light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634271.3U CN203551461U (en) | 2013-10-14 | 2013-10-14 | Microscopic stress instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634271.3U CN203551461U (en) | 2013-10-14 | 2013-10-14 | Microscopic stress instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551461U true CN203551461U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320634271.3U Expired - Fee Related CN203551461U (en) | 2013-10-14 | 2013-10-14 | Microscopic stress instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN203551461U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137584A (en) * | 2015-05-08 | 2015-12-09 | 江南大学 | Improved reading microscope with self-contained light source |
| CN109738360A (en) * | 2019-01-28 | 2019-05-10 | 广州玉科仪器有限公司 | Micro- transmission measurement instrument and micro- transmission measurement bracket |
-
2013
- 2013-10-14 CN CN201320634271.3U patent/CN203551461U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137584A (en) * | 2015-05-08 | 2015-12-09 | 江南大学 | Improved reading microscope with self-contained light source |
| CN109738360A (en) * | 2019-01-28 | 2019-05-10 | 广州玉科仪器有限公司 | Micro- transmission measurement instrument and micro- transmission measurement bracket |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20181014 |
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| CF01 | Termination of patent right due to non-payment of annual fee |