CN201548200U - Detection lens structure - Google Patents
Detection lens structure Download PDFInfo
- Publication number
- CN201548200U CN201548200U CN2009201932934U CN200920193293U CN201548200U CN 201548200 U CN201548200 U CN 201548200U CN 2009201932934 U CN2009201932934 U CN 2009201932934U CN 200920193293 U CN200920193293 U CN 200920193293U CN 201548200 U CN201548200 U CN 201548200U
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- Prior art keywords
- lens
- detector
- benchmark
- structure according
- lens structure
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- 238000001514 detection method Methods 0.000 title abstract description 7
- 238000007789 sealing Methods 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000005499 meniscus Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract 3
- 238000001125 extrusion Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
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- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
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- Instruments For Measurement Of Length By Optical Means (AREA)
Abstract
The utility model discloses a detection camera lens structure, two at least lens pieces in lens cone and the lens cone, the lens piece that is closest to the determinand is the benchmark lens, wherein, the outside cover of benchmark lens have a solid fixed cylinder, solid fixed cylinder installs in the lens cone inner chamber, solid fixed cylinder include lock clamping ring and fixing base, form the fixed benchmark lens of annular groove between fixing base and the lock clamping ring. The utility model discloses simple structure through the protection of fixing base and lock clamping ring to the benchmark lens, can eliminate extrusion and the stress that the lens cone produced the benchmark lens in the equipment process completely, reduces the loss of lens, and it is more convenient to assemble moreover.
Description
(1) technical field:
The utility model relates to a kind of detector lens that is used for spherical detector, the non-contact detection camera lens that particularly is applied to the Feisuo interferometer, uses with the surface accuracy and the radius-of-curvature of detection optical spheric glass.
(2) background technology:
In the production run of spheric glass, the detection of eyeglass precision is most important.The Feisuo interferometer is the main detecting instrument that detects the spheric glass surface accuracy.The Feisuo interferometer comprises light source A, disperses eyeglass B, Amici prism C, collimating mirror D, detector lens E and image pick-up device F.Light source A can use the gas-discharge lamp that sends single wavelength, and for example helium and sodium vapor lamp generally adopt laser; Image pick-up device F can be ccd video camera; Detector lens E is called reference field H towards the one side of determinand G.Its principle of work is such: as shown in Figure 1, the light beam that light source A produces is through after dispersing eyeglass B, Amici prism C and collimating mirror D, vertical incidence detector lens E, part light is reflected at the reference field H of detector lens E, formation enters image pick-up device F with reference to light path Ib through Amici prism C with reference to light path Ib; Part light transmission reference field H is radiated on to be measured the M, and mobile determinand G is if the light vertical irradiation is on to be measured M the time, light will form and detect light path Ia to be measured M reflection this moment, detected light path Ia and returned by former road, through Amici prism C, also reflection enters image pick-up device F.According to the interference of light principle---two row or several row have same frequency, mutual superposition when light wave that direction of vibration is identical meets in the space, strengthen all the time in some zone, then weaken all the time in other zones, form the phenomenon of stable strength distribution; Form interference fringe with reference to light path Ib and detection light path Ia on image pick-up device F, the staff observes the surface accuracy of determinand G according to shape of stripes.In addition, treating that side G moves to light beam convergence point position, the corrugated 180 degree revolutions of reflection ray are returned detector lens E later, after interfering with the generation of reference field h reflex light, can observe big interferometer striped, the distance R that this moment, determinand G moved is the radius-of-curvature of this eyeglass.
In whole interferometer, detector lens is one of most important parts, and the performance of camera lens has determined the precision of measuring.For improving accuracy of detection, each lens of detector lens has all required the high surfaces precision, particularly the benchmark eyeglass.But when the benchmark eyeglass is assembled, easily because of the extruding or other stress produce distortion.Therefore need improve the assembling of more convenient eyeglass when avoiding the benchmark eyeglass to be damaged to lens construction.
(3) utility model content:
In order to overcome the deficiencies in the prior art, the utility model provide a kind of simple in structure, can avoid that the benchmark eyeglass is damaged, detector lens easy to assembly.
The utility model is achieved through the following technical solutions: a kind of detector lens structure, comprise in lens barrel and the lens barrel at least two lens, lens near determinand is the benchmark eyeglass, wherein, described benchmark eyeglass outer cover has stationary magazine creel, stationary magazine creel is installed in the lens barrel inner chamber, and described stationary magazine creel comprises lock pressure ring and holder, forms annular recess fixed reference eyeglass between holder and the lock pressure ring.
Compared with prior art, the utility model is simple in structure, earlier the benchmark eyeglass is put into holder locking lock pressure ring during assembling, the benchmark eyeglass is fixed in the annular recess, put glue then and fix, at this moment the benchmark eyeglass can not move in stationary magazine creel, has guaranteed the right alignment of each lens.At last the benchmark eyeglass is fit in the lens barrel,, can eliminates lens barrel produces the benchmark eyeglass in the assembling process extruding and stress fully, reduce the loss of eyeglass, and assemble more convenient by holder and of the protection of lock pressure ring to the benchmark eyeglass.
Above-mentioned described holder with the lock pressure ring between by being threaded.Be threaded and control the size of annular recess preferably, avoid installing benchmark eyeglass generation extruding and stress.
Between above-mentioned described lens barrel and the stationary magazine creel by being threaded.
Above-mentioned described lens barrel inner chamber is equipped with sealing ring near an end end of light source.Sealing ring also plays the effect of diaphragm simultaneously, makes the simpler compactness of structure.Above-mentioned described lens barrel inner chamber is provided with platform near an end end of determinand, and described stationary magazine creel is installed on the platform.
Above-mentioned described lens barrel, holder, lock pressure ring and sealing ring adopt aluminium to make.Guaranteed that lens barrel has enough intensity and light.
Above-mentioned described benchmark eyeglass is a reference field towards the one side of determinand, and reference field is blank, and other surface of each lens all is coated with anti-reflection film.Surface at each lens plates anti-reflection film, laser beam is seen through as much as possible, avoid light beam in the consumption that is reflected of each lens surface, and on reference field, be not coated with any rete, purpose is to make the reference mirror reflection ray as much as possible, energy is with suitable from the determinand reflection ray, to form interference fringe the most clearly.Also avoid occurring being bumped the situation appearance of colored rete by determinand.
Above-mentioned described anti-reflection film is that centre wavelength is the monofilm of 632.8nm.The surface accuracy of described reference field is less than or equal to γ/20, and wherein γ is 632.8nm.
Above-mentioned described camera lens comprises three lens with positive focal length, and first lens is a plano-convex lens, and its first surface is that convex surface, second surface are the plane; Second lens and benchmark eyeglass are meniscus shaped lens, and described reference field is a concave surface.
(4) description of drawings:
Fig. 1 be the Feisuo interferometer the principle of work synoptic diagram;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is the spectroscopy data figure of employed anti-reflection film of the present utility model;
Fig. 4 is an optical path difference reference diagram of the present utility model.
Below in conjunction with accompanying drawing the utility model is done detailed explanation:
(5) embodiment:
As shown in Figure 2, the utility model comprises in lens barrel 1 and the lens barrel 1 at least two lens, lens near determinand is benchmark eyeglass G3, wherein, described benchmark eyeglass G3 outside is with stationary magazine creel, stationary magazine creel is installed in lens barrel 1 inner chamber, and described stationary magazine creel comprises lock pressure ring 4 and holder 3, forms annular recess 7 fixed reference eyeglass G3 between holder 3 and the lock pressure ring 4.During the camera lens assembling, earlier benchmark eyeglass G3 is put into holder 3, locking lock pressure ring 4, benchmark eyeglass G3 is fixed in the annular recess, puts glue then and fixes, and at this moment benchmark eyeglass G3 can not move in stationary magazine creel, has guaranteed the right alignment of each lens.At last benchmark eyeglass G3 is fit in the lens barrel,, can eliminates 1 pair of benchmark eyeglass of lens barrel G3 produces in the assembling process extruding and stress fully, reduce the loss of eyeglass, and assemble more convenient by the protection of holder 3 and 4 pairs of benchmark eyeglasses of lock pressure ring G3.
Above-mentioned described holder 3 with the lock pressure ring 4 between by being threaded.Be threaded and control the size of annular recess 7 preferably, avoid installing benchmark eyeglass G3 generation extruding and stress.
Between above-mentioned described lens barrel 1 and the stationary magazine creel by being threaded.
Above-mentioned described lens barrel 1 inner chamber is equipped with sealing ring 5 near an end end of light source.Sealing ring 5 also plays the effect of diaphragm simultaneously, makes the simpler compactness of structure.Described lens barrel 1 inner chamber is provided with platform 2 near an end end of determinand, and described stationary magazine creel is installed on the platform 2.
Above-mentioned described lens barrel 1, holder 3, lock pressure ring 4 and sealing ring 5 adopt aluminium to make.Guaranteed that lens barrel 1 has enough intensity and light.
For making detector form tangible interference fringe, above-mentioned described benchmark eyeglass G3 is reference field S7 towards the one side of determinand, and reference field S7 is blank, and other surface of each lens all is coated with anti-reflection film.Surface at each lens plates anti-reflection film, laser beam is seen through as much as possible, avoid light beam in the consumption that is reflected of each lens surface, and on reference field S7, be not coated with any rete, purpose is to make reference field S7 reflection ray as much as possible, energy is with suitable from the determinand reflection ray, to form interference fringe the most clearly.
Above-mentioned described anti-reflection film is that centre wavelength is the monofilm of 632.8nm.The surface accuracy of described reference field S7 is less than or equal to γ/20, and wherein γ is 632.8nm.
Above-mentioned described camera lens comprises three lens with positive focal length, and the first lens G1 is a plano-convex lens, and its first surface S2 is that convex surface, second surface S3 are the plane; The second lens G2 and benchmark eyeglass G3 are meniscus shaped lens, and described reference field S7 is a concave surface.Also be separated with spacer ring 6, spacer ring 6 between the described first lens G1 and the second lens G2.
Below be specific embodiment of the utility model:
Preferred parameter value of the present utility model is as shown in table 1:
Table 1
In the utility model, each lens adopts the material of high refraction, and wherein the first lens G1 and the second lens G2 all adopt the H-ZF52A glass material, and benchmark eyeglass G3 adopts the H-ZFG3LA glass material.
The foregoing description is a better embodiment of the present utility model; but embodiment of the present utility model is not limited thereto; other are any not to deviate from change, the modification done under spirit of the present utility model and the principle, substitute, combination, simplify; be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (10)
1. detector lens structure, comprise in lens barrel and the lens barrel at least two lens, lens near determinand is the benchmark eyeglass, it is characterized in that: described benchmark eyeglass outer cover has stationary magazine creel, stationary magazine creel is installed in the lens barrel inner chamber, described stationary magazine creel comprises lock pressure ring and holder, forms annular recess fixed reference eyeglass between holder and the lock pressure ring.
2. a kind of detector lens structure according to claim 1 is characterized in that: described holder with the lock pressure ring between by being threaded.
3. a kind of detector lens structure according to claim 1 is characterized in that: between described lens barrel and the stationary magazine creel by being threaded.
4. a kind of detector lens structure according to claim 1 is characterized in that: described lens barrel inner chamber is equipped with sealing ring near an end end of light source.
5. a kind of detector lens structure according to claim 4 is characterized in that: described lens barrel inner chamber is provided with platform near an end end of determinand, and described stationary magazine creel is installed on the platform.
6. a kind of detector lens structure according to claim 5 is characterized in that: described lens barrel, holder, lock pressure ring and sealing ring adopt aluminium to make.
7. according to any described a kind of detector lens structure in the claim 1 to 6, it is characterized in that: the benchmark eyeglass is a reference field towards the one side of determinand, and reference field is blank, and other surface of each lens all is coated with anti-reflection film.
8. a kind of detector lens structure according to claim 7 is characterized in that: described anti-reflection film is that centre wavelength is the monofilm of 632.8nm.
9. a kind of detector lens structure according to claim 7, it is characterized in that: the surface accuracy of described reference field is less than or equal to γ/20, and wherein γ is 632.8nm.
10. a kind of detector lens structure according to claim 9 is characterized in that: described camera lens comprises three lens with positive focal length, and first lens is a plano-convex lens, and its first surface is that convex surface, second surface are the plane; Second lens and benchmark eyeglass are meniscus shaped lens, and described reference field is a concave surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201932934U CN201548200U (en) | 2009-08-18 | 2009-08-18 | Detection lens structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201932934U CN201548200U (en) | 2009-08-18 | 2009-08-18 | Detection lens structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201548200U true CN201548200U (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201932934U Expired - Fee Related CN201548200U (en) | 2009-08-18 | 2009-08-18 | Detection lens structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201548200U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162824A (en) * | 2014-08-01 | 2014-11-26 | 宁波法里奥光学科技发展有限公司 | Shooting two-dimensional imaging device of full-automatic lens edge grinding machine and shooting method thereof |
| WO2019090692A1 (en) * | 2017-11-10 | 2019-05-16 | 华为技术有限公司 | Lens assembly, camera assembly, and terminal |
-
2009
- 2009-08-18 CN CN2009201932934U patent/CN201548200U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162824A (en) * | 2014-08-01 | 2014-11-26 | 宁波法里奥光学科技发展有限公司 | Shooting two-dimensional imaging device of full-automatic lens edge grinding machine and shooting method thereof |
| WO2019090692A1 (en) * | 2017-11-10 | 2019-05-16 | 华为技术有限公司 | Lens assembly, camera assembly, and terminal |
| US11467473B2 (en) | 2017-11-10 | 2022-10-11 | Huawei Technologies Co., Ltd. | Lens assembly, camera module, and terminal |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20170818 |