CN101619956A - Lens thickness tester and method for measuring lens center thickness - Google Patents
Lens thickness tester and method for measuring lens center thickness Download PDFInfo
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- CN101619956A CN101619956A CN200810302496A CN200810302496A CN101619956A CN 101619956 A CN101619956 A CN 101619956A CN 200810302496 A CN200810302496 A CN 200810302496A CN 200810302496 A CN200810302496 A CN 200810302496A CN 101619956 A CN101619956 A CN 101619956A
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- osculating element
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Abstract
The invention relates to a lens thickness tester which is used for measuring lens center thickness; the thickness tester comprises a lens supporting body and a divided scale; wherein the divided scale and the lens supporting body are oppositely arranged, the lens supporting body is provided with an acceptance groove for containing the lens; the lens supporting body is provided with a contact unit; the contact unit and the divided scale are arranged at the two opposite sides of the lens; and the contact unit can move in the direction which is close to or far away from the acceptance groove.
Description
Technical field
The present invention relates to a kind of thicknessmeter, relate in particular to a kind of be used to measure thick lens thickness meter of lens center meat and the thick method of measurement lens center meat.
Background technology
In recent years, along with the development of optical articles, the range of application of optical lens continue to enlarge, as digital camera, have the mobile phone of camera function etc.This optical lens and the very high accuracy of camera lens module needs that includes optical lens.Optical lens adopts injection moulding usually.Adopt injection moulding to produce product, enhance productivity greatly and output, reduce cost.
In the production run, lens need to detect its center meat thick (thickness of lens center) to guarantee the precision of product after finishing injection moulding.Disclosed the height detection method of optical modules such as a kind of lens among the paper A NovelOptical Method of Dimension Measurement of Objects with Circular Cross-section that in the international symposium (Instrumentation and Measurement Technology Conference) of IEEE system, instrument and detection technique in 2006, delivers as people such as Tomas Fischer.
See also Fig. 1, at present, usually adopt contact surface profiler 2 in the production run, it is to utilize surface profiler 2 contact one lens, 1 surfaces and move on lens 1 surface, and calculating the difference of peak and minimum point in the moving process then, to try to achieve the center meat of lens 1 thick.Yet, contact surface profiler divalent lattice costliness, and, cause measuring error when lens 1 placement inclination easily
See also Fig. 2, also have the center meat that adopts height gage 3 to measure lens 1 thick.Height gage 3 comprises that one measures a plummer 32 and a contact head 31, during measurement, lens 1 are positioned on the plummer 32, one surface of lens 1 contacts with plummer 32, the end face of this contact head 31 contacts with another surface of lens 1, this moment, height gage 3 read the distance values between plummer 32 and the contact head 31, and the center meat that is lens 1 is thick.
Yet the end face of general plummer 32 surfaces and contact head 31 is all the plane, when measuring lens 1, can't lens 1 are effectively fixing, and cause measuring error easily; In addition, the surface of contact on plummer 32 surfaces and contact head 31 end faces and lens 1 surface is smaller, when contact head 31 contacts with lens 1 surface, easily causes the distortion of lens 1 local pressure, makes the measuring accuracy variation.
Summary of the invention
In view of this, be necessary to provide higher lens thickness meter of a kind of measuring accuracy and the thick method of measurement lens center meat.
A kind of lens thickness meter, the center meat that is used to measure lens is thick, it comprises lens carrier and rule, described rule and lens carrier are oppositely arranged, described lens carrier has the storage tank that holds described lens, described lens carrier is provided with an osculating element, described osculating element and the relative both sides of what lens carrier, described rule position, and described osculating element and rule can be to moving away from the direction with close described storage tank.
A kind of thick method of lens center meat of measuring, it comprises: a kind of lens thickness meter is provided, and it comprises lens carrier, rule and an osculating element, and described lens carrier has the storage tank that holds described lens; Lens are fixed in the storage tank; Mobile osculating element and rule contact it respectively with two faces of lens, read first scale of rule; Take out lens, rule and osculating element are joined, read second scale that connects rule; It is thick that thereby the difference of calculating first scale and second scale draws the center meat of lens.
A kind of thick method of lens center meat of measuring, it comprises: a kind of lens thickness meter is provided, and it comprises lens carrier, rule and an osculating element, and described lens carrier has the storage tank that holds described lens; Lens are fixed in the storage tank; Mobile osculating element makes it contact with lens; Take out lens, rule and osculating element are joined, read first scale of rule; Put into lens, rule is contacted with lens, read second scale of rule; It is thick that thereby the difference of calculating first scale and second scale draws the center meat of lens.
With respect to prior art, this lens thickness meter has adopted osculating element and lens carrier, lens carrier has the storage tank that holds lens, when measurement lens center meat was thick, lens were contained in the storage tank securely, and osculating element contacts with a face of lens, rule contacts with the another side of lens, when using this lens thickness meter to measure lens, the lifting surface area of lens is bigger, thereby can avoid the lens local pressure to produce deformation and the measuring error that causes.
Description of drawings
Fig. 1 is that prior art contact surface profiler cooperates synoptic diagram with lens.
Fig. 2 is that the prior art height gage cooperates synoptic diagram with lens.
Fig. 3 is the structural representation of embodiment of the invention lens thickness meter.
Fig. 4 to 5 utilizes the thick synoptic diagram of lens thickness meter measurement lens meat among Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See also Fig. 3, the embodiment of the invention provides a kind of lens thickness meter 10, and the center meat that is used to measure lens 20 is thick, and these lens 20 are biconvex lens in the present embodiment, and it has opposite first 201 and second surface 202.
Lens thickness meter 10 comprises that support 12 on a plummer 11, this plummer 11 of vertical fixing, one are arranged at rule 13 on this support 12, one are arranged on the plummer 11 and position and rule 13 are relative lens carrier 14 and one and are arranged on lens and become osculating element 16 on the carrier 14, the both sides of rule 13 and 16 what lens carrier 14 of osculating element.
This plummer 11 has a loading end 111, and lens carrier 14 is arranged at this loading end 111.Lens become carrier 14 to have a storage tank 141 and the unit 19 of bleeding that holds lens 20, and the unit 19 of bleeding communicates with storage tank 141.In the present embodiment, storage tank 141 comprises the diameter of the diameter in first hole 142 of coaxial setting and 143, the first holes 142, second hole greater than second hole 143, and the diameter in first hole 142 equals the size of lens 20.The center of rule 13, osculating element 16 and storage tank 141 is that the center meat of lens 20 is thick with the result who guarantee to measure on same straight line.
When measurement lens 20 center meat are thick, bleed by the 19 pairs of storage tanks 141 in unit of bleeding lens 20 are contained in the storage tank 141 securely, osculating element 16 contacts with second surface 202, rule 13 contacts with first surface 201, the lifting surface area of lens 20 is bigger, thereby can avoid lens 20 local pressures to produce deformation and the measuring error that causes.
See also Fig. 3 to Fig. 5, the thick first method of center meat that adopts this lens thickness meter 10 to measure these lens 20 comprises the steps:
1) lens 20 is placed in the storage tank 141, opens the 19 pairs of storage tanks 141 in unit of bleeding and bleed, osculating element 16 is contacted with the second surface 202 of lens 20 by operation control unit 18 so that lens 20 firmly are adsorbed on the wall of storage tank 141.
2) rule 13 declines contact with the first surface 201 of lens 20, and the scale value of record rule 13 this moment, and this scale value note is made first scale.
3) rule 13 away from lens 20 after, lens 20 are taken out, then, rule 13 is contacted the scale value of record rule 13 this moment, this scale note work second scale with osculating element 16.
4) difference of calculating second scale value and first scale value, the center meat that this difference is lens 20 is thick.
Certainly, can measure many group differences, it is thick as the center meat of lens 20 to get its mean value.
Adopt this lens thickness meter 10 to measure the thick second method of center meat of these lens 20: at first, lens 20 sides are become on the carrier 14 at lens, osculating element 16 is contacted with second surface 202, then, take out lens 20, rule 13 is contacted with osculating element 16, first scale value of record rule 13, again lens 20 are put into storage tank 141, rule 13 is contacted with first surface 201, second scale value of record rule 13, the center meat that the difference of second scale value and first scale value is lens 20 is thick.
Adopt this lens thickness meter 10 to measure thick the third method of center meat of these lens 20: at first, lens 20 sides become on the carrier 14 at lens, make rule 13 contact first surfaces 201, osculating element 16 is contacted with second surface 202, first scale value of record rule 13, then, take out lens 20, rule 13 is contacted with osculating element 16, second scale of record rule 13, the center meat that the difference of second scale value and first scale value is lens 20 is thick.
When second surface 202 was concave surface, osculating element 16 was a bulge-structure near an end of storage tank 141, and second surface 202 is contacted with osculating element 16, and first surface 201 contacts with rule 13.
In addition, those skilled in the art also can do other variation in spirit of the present invention, certainly, the variation that these are done according to spirit of the present invention, all should be included in the present invention's scope required for protection in.
Claims (10)
1. lens thickness meter, the center meat that is used to measure lens is thick, it comprises lens carrier and rule, described rule and lens carrier are oppositely arranged, it is characterized in that: described lens carrier has the storage tank that holds described lens, described lens carrier is provided with an osculating element, described osculating element and the relative both sides of what lens carrier, described rule position, and described osculating element and rule can be to moving away from the direction with close described storage tank.
2. lens thickness meter as claimed in claim 1 is characterized in that: the size of described storage tank equals the size of described lens.
3. lens thickness meter as claimed in claim 1 is characterized in that: described osculating element and the contacted part of described lens are plane or raised structures.
4. as each described lens thickness meter of claim 1 to 3, it is characterized in that: further comprise a plummer, described lens carrier is arranged on the described plummer.
5. lens thickness meter as claimed in claim 4 is characterized in that: further comprise a support that is vertically set on the described plummer, described rule links to each other with described support by a head rod.
6. lens thickness meter as claimed in claim 5, it is characterized in that: further comprise one second connecting link, described osculating element is arranged on the described lens carrier by described second connecting link, and described second connecting link is provided with the control module of the described osculating element motion of control.
7. lens thickness meter as claimed in claim 6 is characterized in that: described lens carrier is provided with the unit of bleeding.
8. measure the thick method of lens center meat for one kind, it comprises:
A kind of lens thickness meter is provided, and it comprises lens carrier, rule and an osculating element, and described lens carrier has the storage tank that holds described lens;
Lens are fixed in the storage tank;
Mobile osculating element and rule contact it respectively with two faces of lens, read first scale of rule;
Take out lens, rule and osculating element are joined, read second scale that connects rule;
It is thick that thereby the difference of calculating first scale and second scale draws the center meat of lens.
9. meat thick method in measurement as claimed in claim 8 lens center is characterized in that: comprise that further many group switching centres of measurement meat is thick, the step of getting its mean value.
10. measure the thick method of lens center meat for one kind, it comprises:
A kind of lens thickness meter is provided, and it comprises lens carrier, rule and an osculating element, and described lens carrier has the storage tank that holds described lens;
Lens are fixed in the storage tank;
Mobile osculating element makes it contact with lens;
Take out lens, rule and osculating element are joined, read first scale of rule;
Put into lens, rule is contacted with lens, read second scale of rule;
It is thick that thereby the difference of calculating first scale and second scale draws the center meat of lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810302496A CN101619956A (en) | 2008-07-02 | 2008-07-02 | Lens thickness tester and method for measuring lens center thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810302496A CN101619956A (en) | 2008-07-02 | 2008-07-02 | Lens thickness tester and method for measuring lens center thickness |
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| Publication Number | Publication Date |
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| CN101619956A true CN101619956A (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810302496A Pending CN101619956A (en) | 2008-07-02 | 2008-07-02 | Lens thickness tester and method for measuring lens center thickness |
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| CN (1) | CN101619956A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300228A (en) * | 2015-10-16 | 2016-02-03 | 宁波润轴汽配有限公司 | Multifunctional wall thickness measuring device and application method thereof |
| CN109458906A (en) * | 2018-12-12 | 2019-03-12 | 淄博朗斯光电有限公司 | A kind of optical mirror slip detection device and detection method |
| CN110617751A (en) * | 2019-08-30 | 2019-12-27 | 上海峰梅光学科技有限公司 | Device and method for measuring center thickness of lens |
| CN112880575A (en) * | 2021-01-15 | 2021-06-01 | 许昌学院 | High-precision thickness gauge for optical component detection |
-
2008
- 2008-07-02 CN CN200810302496A patent/CN101619956A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300228A (en) * | 2015-10-16 | 2016-02-03 | 宁波润轴汽配有限公司 | Multifunctional wall thickness measuring device and application method thereof |
| CN109458906A (en) * | 2018-12-12 | 2019-03-12 | 淄博朗斯光电有限公司 | A kind of optical mirror slip detection device and detection method |
| CN110617751A (en) * | 2019-08-30 | 2019-12-27 | 上海峰梅光学科技有限公司 | Device and method for measuring center thickness of lens |
| CN112880575A (en) * | 2021-01-15 | 2021-06-01 | 许昌学院 | High-precision thickness gauge for optical component detection |
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Open date: 20100106 |