CN1900673A - Detector for glasses lens optic quality - Google Patents
Detector for glasses lens optic quality Download PDFInfo
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- CN1900673A CN1900673A CN 200610041215 CN200610041215A CN1900673A CN 1900673 A CN1900673 A CN 1900673A CN 200610041215 CN200610041215 CN 200610041215 CN 200610041215 A CN200610041215 A CN 200610041215A CN 1900673 A CN1900673 A CN 1900673A
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Abstract
The measuring device includes following settings in sequence of light path: spot light source, beam expanding, and collimation part, beam shrinking, and imaging part composed of image sensor and display device. Diaphragm is setup in light path of light beam collimation part. The diaphragm is a plate with array of photic pinhole being arranged evenly. Spectacle lens to be tested is placed at upstream side of diaphragm light path in collimation part. Beam shrinking part converges light beam after the diaphragm onto image sensor. Using Hartmann principle, the device carries out ray tracing for spectacle lens, and further measuring optical aberration to implement measuring optical quality of spectacle lens.
Description
Technical field
The present invention relates to a kind of detector for glasses lens optic quality.
Background technology
Lens (comprising spectacle lenses, contact lens, artificial lens etc.) will continue to become widely the method for correction of refractive errors, and the quality of its optical quality directly has influence on the human eye vision quality.Usually there are several diverse ways to be used for measuring the optical quality of lens, as Hartmann method, interferometric method, Ronchi method of testing and the method etc. of directly measuring the surface configuration of eyeglass, but generally there are following two shortcomings in these methods: 1, can only detect certain point or optical aberration among a small circle and distribute, for aberration sudden change distributes and the visual field is bigger gradual change mirror etc. is arranged, can't know the optical quality of its whole eyeglass; 2, measure precision inadequately, present a lot of methods can only detect the low order aberration of eyeglass, as out of focus, low order spherical aberration and astigmatism, can't detect the more aberration of high-order.
Goal of the invention
The objective of the invention is to for overcoming the deficiencies in the prior art, a kind of optical quality that can know whole eyeglass is provided, can detects aberration sudden change distributes and the visual field the is bigger gradual change mirror and the detector for glasses lens optic quality of higher order aberratons are more arranged.
For achieving the above object, the technical solution used in the present invention is: a kind of detector for glasses lens optic quality, it is characterized in that this device comprises the pointolite that sets gradually along light path, beam expander and collimation are partly, light beam is brought together and is partly reached the imaging part that is made of imageing sensor and display, be provided with the evenly distributed diaphragm that the tabula rasa formation of logical light array of orifices is arranged on it in the described beam collimation light path partly, tested lens is placed on light path upstream one side of diaphragm in the collimation part, and light beam is brought together partly and will be converged on the imageing sensor through the light beam behind the diaphragm.
The principle that measurement mechanism of the present invention utilizes the Shack-Hartmann wavefront to detect, expand the dioptric system of light beams through tested eyeglass, form the form of wave front aberration, the Hartmann diaphragm that is positioned at tested eyeglass the place ahead is divided into several littler wavefront with the wavefront of refracted ray, each wavefront all is focused into a luminous point after light beam is brought together partly, received by ccd sensor, ccd sensor transfers to the wavefront image that receives in the computing machine and is presented on the screen, and luminous point is with respect to the displacement of Hartmann diaphragm aperture center on the locus, then directly show the inclination situation of wavefront herein, just can obtain the form and the aberration profile of whole tested eyeglass wavefront by the inclined degree of each wavefront of computed in software.In addition, the optical track sampling density of this device is high so that the aberration that energy measurement ten rank are above.
With specific embodiment apparatus of the present invention are further described with reference to the accompanying drawings below.
Description of drawings
Fig. 1 is a specific embodiment of the invention light path principle structural representation;
Embodiment
As shown in Figure 1, detector for glasses lens optic quality comprises the pointolite that sets gradually along light path, beam expander and collimation are partly, light beam is brought together and is partly reached the imaging part that is made of imageing sensor 7 and display, wherein pointolite can be optical fiber source or obtain by before light emitting source 1 is as laser or led light source spatial filter being set, spatial filter can be selected 20 times microscope 2 for use and be provided with baffle plate 3 formations that diameter is the aperture of 3～8 μ m, described beam expander and collimation partly comprise the achromatism negative lens 4 and the first achromatism positive lens 5, light beam is brought together partly and is made of the second achromatism positive lens 6, negative lens can be plano-concave or concave-concave cemented doublet, positive lens can be plano-convex or biconvex cemented doublet, imageing sensor 7 and display are made of ccd sensor and computing machine 8 respectively, be provided with the evenly distributed diaphragm 9 that the tabula rasa formation of logical light array of orifices is arranged on it in the beam collimation light path partly, as the Hartmann diaphragm, the little hole count of logical light on the logical light array of orifices is no less than 100, and is high so that the aberration more than energy measurement ten rank with the optical track sampling density that guarantees this device.Tested lens 10 is placed on light path upstream one side of diaphragm 9 in the collimation part, light emitting source 1, microscope 2, baffle plate 3, achromatism negative lens 4, the first achromatism positive lens 5, the center of the second achromatism positive lens 6 and ccd sensor is on the same optical axis, light beam is brought together partly and will be converged in through the light beam behind the diaphragm 9 on the imageing sensor 7, for the ease of regulating the sharpness and the size of image, the optical track imaging surface that light-sensitive surface in accurate control and the change ray tracing light path is surveyed improves measurement range, preferably be provided with the regulating device 11 that comprises imageing sensor 7 mounting platforms that can move along the optical axis parallel direction, imageing sensor 7 is fixed on the mounting platform, the travel mechanism of regulating device 11 can be rack-and-pinion or screw rod swivel nut mode, by regulating imageing sensor 7 mounting platforms, can accurately obtain the optical track imaging surface of diverse location.Can be provided with the adjustable neutral colour filter of intensity 13 in addition in light emitting source 1 the place ahead and constitute light intensity regulating mechanism.
For avoiding measurement mechanism long along single-row spread length, also be provided with a pair of mutually vertical and optical axis catoptron 12 at 45 in this specific embodiment, light path is converted into the form of doubling back and forth, can make measurement mechanism length reduce half.
Claims (6)
1, a kind of detector for glasses lens optic quality, it is characterized in that this device comprises the pointolite that sets gradually along light path, beam expander and collimation are partly, light beam is brought together partly and by imageing sensor (7) with have the imaging part that the display of image processing function constitutes, be provided with the evenly distributed diaphragm (9) that the tabula rasa formation of logical light array of orifices is arranged on it in the described beam collimation light path partly, tested lens (10) is placed on light path upstream one side of diaphragm (9) in the collimation part, and light beam is brought together partly and will be converged on the imageing sensor (7) through the light beam behind the diaphragm (9).
2, detector for glasses lens optic quality according to claim 1, it is characterized in that: described pointolite comprises light emitting source (1), spatial filter, described beam expander and collimation partly comprise the achromatism negative lens (4) and the first achromatism positive lens (5), light beam is brought together partly and is made of the second achromatism positive lens (6), imageing sensor (7) and display constitute described light emitting source (1) by ccd sensor and computing machine (8) respectively, spatial filter, achromatism negative lens (4), the first achromatism positive lens (5), the center of the second achromatism positive lens (6) and ccd sensor is on the same optical axis.
3, detector for glasses lens optic quality according to claim 2 is characterized in that: described negative lens is plano-concave or concave-concave cemented doublet, and positive lens is plano-convex or biconvex cemented doublet.
4, detector for glasses lens optic quality according to claim 1 and 2, it is characterized in that also being provided with the regulating device (11) that comprises imageing sensor (7) mounting platform that can move along the optical axis parallel direction, described imageing sensor (7) is fixed on the mounting platform.
5, according to claim 1 or 2 or 3 described detector for glasses lens optic quality, it is characterized in that: described light emitting source (1) the place ahead is provided with the adjustable neutral colour filter of intensity (13) and constitutes light intensity regulating mechanism.
6, detector for glasses lens optic quality according to claim 4 is characterized in that: described light emitting source (1) the place ahead is provided with the adjustable neutral colour filter of intensity (13) and constitutes light intensity regulating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610041215 CN1900673A (en) | 2006-07-25 | 2006-07-25 | Detector for glasses lens optic quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610041215 CN1900673A (en) | 2006-07-25 | 2006-07-25 | Detector for glasses lens optic quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1900673A true CN1900673A (en) | 2007-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610041215 Pending CN1900673A (en) | 2006-07-25 | 2006-07-25 | Detector for glasses lens optic quality |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338693A (en) * | 2010-07-20 | 2012-02-01 | 上海雄博精密仪器股份有限公司 | Method and device for detecting progressive multifocal lens |
| CN103512731A (en) * | 2013-10-08 | 2014-01-15 | 中国计量科学研究院 | Method for measuring back vertex power of lens |
| CN104101481A (en) * | 2013-04-10 | 2014-10-15 | 国家眼镜产品质量监督检验中心 | Lens scattered light detector with dual optical paths |
| CN105748172A (en) * | 2016-02-23 | 2016-07-13 | 于好勇 | Artificial keratoscope column optical performance detector |
| CN106840611A (en) * | 2017-02-07 | 2017-06-13 | 长沙青波光电科技有限公司 | It is simple to judge the good and bad method of optical system |
| WO2019033624A1 (en) * | 2017-08-14 | 2019-02-21 | 深圳光峰科技股份有限公司 | Microlens array inspection system and microlens array inspection method |
| CN114235350A (en) * | 2021-12-08 | 2022-03-25 | 江苏汇鼎光学眼镜有限公司 | Aberration detection device of spectacle lens |
-
2006
- 2006-07-25 CN CN 200610041215 patent/CN1900673A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338693A (en) * | 2010-07-20 | 2012-02-01 | 上海雄博精密仪器股份有限公司 | Method and device for detecting progressive multifocal lens |
| CN104101481A (en) * | 2013-04-10 | 2014-10-15 | 国家眼镜产品质量监督检验中心 | Lens scattered light detector with dual optical paths |
| CN104101481B (en) * | 2013-04-10 | 2016-06-29 | 国家眼镜产品质量监督检验中心 | A kind of eyeglass scattering optical detector with double light path |
| CN103512731A (en) * | 2013-10-08 | 2014-01-15 | 中国计量科学研究院 | Method for measuring back vertex power of lens |
| CN105748172A (en) * | 2016-02-23 | 2016-07-13 | 于好勇 | Artificial keratoscope column optical performance detector |
| CN106840611A (en) * | 2017-02-07 | 2017-06-13 | 长沙青波光电科技有限公司 | It is simple to judge the good and bad method of optical system |
| WO2019033624A1 (en) * | 2017-08-14 | 2019-02-21 | 深圳光峰科技股份有限公司 | Microlens array inspection system and microlens array inspection method |
| CN114235350A (en) * | 2021-12-08 | 2022-03-25 | 江苏汇鼎光学眼镜有限公司 | Aberration detection device of spectacle lens |
| CN114235350B (en) * | 2021-12-08 | 2024-06-04 | 江苏汇鼎光学眼镜有限公司 | Aberration detection device of spectacle lens |
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Open date: 20070124 |