CN207423501U - A kind of automatic focal power measuring device based on image procossing - Google Patents
A kind of automatic focal power measuring device based on image procossing Download PDFInfo
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- CN207423501U CN207423501U CN201721582792.3U CN201721582792U CN207423501U CN 207423501 U CN207423501 U CN 207423501U CN 201721582792 U CN201721582792 U CN 201721582792U CN 207423501 U CN207423501 U CN 207423501U
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- grid
- device based
- image procossing
- measuring device
- focal power
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- Eyeglasses (AREA)
- Eye Examination Apparatus (AREA)
Abstract
The utility model is related to ophthalmic len field of measuring technique, and disclose a kind of automatic focal power measuring device based on image procossing, including point light source, first is provided with below point light source into optical channel, first into being installed with quasi- value object lens below optical channel, second is provided with into optical channel below quasi- value object lens, second is equipped with tested eyeglass into the underside of optical channel, fixed frame is installed with below tested eyeglass, the inside of fixed frame is installed with Hartmann's grid, Hartmann's grid includes grid, macropore is offered in the middle part of grid surface, the surface of grid is uniformly provided with aperture.The automatic focal power measuring device based on image procossing, each operating procedure for the cumbersome and prone error that need not carry out focusing etc. again reduce error；And progressive addition lens can be carried out simply and accurately measuring；Due to using multimetering, also it is not easy measuring error occur in light path even if there are some barriers, enhances jamproof ability.
Description
Technical field
The utility model is related to ophthalmic len field of measuring technique, are specially a kind of automatic focal power measurement based on image procossing
Device.
Background technology
Vertometer is mainly used for measuring the optical parameter of ophthalmic len, has visual type vertometer, projection by its design principle
Vertometer and automatic lensometer.Due to visual type vertometer there are eyepiece adjust error, although projection vertometer to this
It improves, however for whether focusing and still needing to through manual setting, automatic lensometer is rapid because of its superiority development.Particularly day
This and the U.S. are in a leading position in the development of automatic lensometer and occupy the larger market share, and China is that the whole world is most latent
The glasses consumption market of power.Therefore, eyeglass lens power measuring method is studied, develops the full-automatic high precision with independent intellectual property right
Vertometer becomes urgent demand.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of automatic focal power measurement dress based on image procossing
It puts, possesses and image is obtained using Hartmann's grid, realize all automatic measurement of diopter of correction, astigmatism, the prism degree of ophthalmic len etc.
The advantages of, solve the problems, such as that prior art measurement effect is bad.
(2) technical solution
It is above-mentioned using Hartmann's grid acquisition image to realize, realize diopter of correction, astigmatism, the prism degree of ophthalmic len etc.
The purpose of all automatic measurement, the utility model provide following technical solution：A kind of automatic focal power measurement dress based on image procossing
It puts, including point light source, first is provided with below the point light source and fixes peace into the lower section of optical channel into optical channel, described first
Be worth object lens equipped with standard, second be provided with below the quasi- value object lens into optical channel, described second into optical channel underside
Tested eyeglass is installed, fixed frame is installed with below the tested eyeglass, peace is fixed in the inside of the fixed frame
Equipped with Hartmann's grid, Hartmann's grid includes grid, and macropore is offered in the middle part of the grid surface, the grid
Surface is uniformly provided with aperture, and the area array CCD being fixedly mounted on inside fixed frame is provided with below Hartmann's grid.
Preferably, the quantity of the macropore is five, five macropores opening symmetrically and evenly centered on one of macropore
It is located at the surface of grid.
Preferably, the point light source is high brightness LED.
Preferably, the resolution ratio of the camera shooting of the area array CCD is 1024x1280.
Preferably, the shape of the fixed frame is adapted with the shape of Hartmann's grid and area array CCD.
Preferably, the tested eyeglass can be concave-sphere or prism.
(3) advantageous effect
Compared with prior art, the utility model provides a kind of automatic focal power measuring device based on image procossing, tool
Standby following advantageous effect：
The automatic focal power measuring device based on image procossing, need not carry out the cumbersome and prone error such as focus again
Each operating procedure reduces error；And progressive addition lens can be carried out simply and accurately measuring；Due to being surveyed using multiple spot
It measures, is also not easy measuring error occur even if there are some barriers in light path, enhances jamproof ability.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model Hartmann's lattice structure schematic diagram.
In figure：1 point light source, 2 first are tested eyeglasses, 6 fixed frames into optical channel, 3 quasi- value object lens, 4 second into optical channel, 5
Frame, 7 Hartmann's grids, 71 grids, 72 macropores, 73 apertures, 8 area array CCDs.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, a kind of automatic focal power measuring device based on image procossing, including point light source 1, point light source 1 is
High brightness LED, the lower section of point light source 1 are provided with first and are fixedly mounted into optical channel 2, first into the lower section of optical channel 2
There are a quasi- value object lens 3, the lower sections of quasi- value object lens 3 is provided with second into optical channel 4, and second is equipped with into the underside of optical channel 4
Tested eyeglass 5, it can be concave-sphere or prism to be tested eyeglass 5, and the lower section of tested eyeglass 5 is installed with fixed frame 6, fixed frame
The inside of frame 6 is installed with Hartmann's grid 7, and Hartmann's grid 7 includes grid 71, is offered in the middle part of 71 surface of grid big
Hole 72, the quantity of macropore 72 are five, five macropores 72 centered on one of macropore symmetrically and evenly be opened in grid 71
Surface, the surface of grid 71 is uniformly provided with aperture 73, and the lower section of Hartmann's grid 7, which is provided with, is fixedly mounted on fixed frame
Area array CCD 8 inside 6, the shape of fixed frame 6 are adapted with the shape of Hartmann's grid 7 and area array CCD 8, area array CCD 8
Camera shooting resolution ratio for 1024x1280, should automatic focal power measuring device based on image procossing, need not carry out again
Each operating procedure of the cumbersome and prone errors such as focusing reduces error；And progressive addition lens can be carried out simple and accurate
True measurement；Due to using multimetering, also it is not easy measuring error occur in light path even if there are some barriers, enhances
Jamproof ability.
The electric elements occurred in this article are electrically connected with extraneous main controller and 220V alternating currents, and main controller can be meter
Calculation machine etc. plays the conventionally known equipment of control.
When in use, when the tested eyeglass 5 of nothing or the eyeglass number of degrees are zero, point light source 1 is projected in face through Hartmann's grid 7
On battle array CCD8, the facula position of formation is at (x0, y0).It is negative lens to have tested eyeglass 5 and tested eyeglass 5, and collimated light beam passes through
It deflects after crossing tested eyeglass 5, facula position is moved at (x, y).Hot spot (x, y) point will be leaned on to central point during positive lens
Closely.Tested eyeglass 5 can be detected by collecting hot spot displacement distance and the relation of the eyeglass number of degrees on image according to area array CCD 8
The number of degrees.
In conclusion should automatic focal power measuring device based on image procossing, need not carry out focusing etc. again not only trouble but also
The each operating procedure easily to malfunction reduces error；And progressive addition lens can be carried out simply and accurately measuring；Due to adopting
With multimetering, also it is not easy measuring error occur even if there are some barriers in light path, enhances jamproof ability.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.
While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art,
It is appreciated that in the case where not departing from the principle of the utility model and spirit can these embodiments be carried out with a variety of variations, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of automatic focal power measuring device based on image procossing, including point light source (1), it is characterised in that：The point light source
(1) first is provided with below into optical channel (2), described first into being installed with quasi- value object lens below optical channel (2)
(3), second is provided with below the quasi- value object lens (3) into optical channel (4), described second into optical channel (4) underside
Tested eyeglass (5) is installed, fixed frame (6), the fixed frame (6) are installed with below the tested eyeglass (5)
Inside be installed with Hartmann's grid (7), Hartmann's grid (7) includes grid (71), grid (71) surface
Middle part offer macropore (72), the surface of the grid (71) is uniformly provided with aperture (73), Hartmann's grid (7)
Lower section, which is provided with, is fixedly mounted on the internal area array CCD (8) of fixed frame (6).
2. a kind of automatic focal power measuring device based on image procossing according to claim 1, it is characterised in that：It is described big
The quantity in hole (72) is five, five macropores (72) centered on one of macropore symmetrically and evenly be opened in grid (71)
Surface.
3. a kind of automatic focal power measuring device based on image procossing according to claim 1, it is characterised in that：The point
Light source (1) is high brightness LED.
4. a kind of automatic focal power measuring device based on image procossing according to claim 1, it is characterised in that：The face
The resolution ratio of the camera shooting of battle array CCD (8) is 1024x1280.
5. a kind of automatic focal power measuring device based on image procossing according to claim 1, it is characterised in that：It is described solid
The shape for determining frame (6) is adapted with the shape of Hartmann's grid (7) and area array CCD (8).
6. a kind of automatic focal power measuring device based on image procossing according to claim 1, it is characterised in that：The quilt
It can be concave-sphere or prism to survey eyeglass (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582792.3U CN207423501U (en) | 2017-11-23 | 2017-11-23 | A kind of automatic focal power measuring device based on image procossing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582792.3U CN207423501U (en) | 2017-11-23 | 2017-11-23 | A kind of automatic focal power measuring device based on image procossing |
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| Publication Number | Publication Date |
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| CN207423501U true CN207423501U (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721582792.3U Expired - Fee Related CN207423501U (en) | 2017-11-23 | 2017-11-23 | A kind of automatic focal power measuring device based on image procossing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186955A (en) * | 2018-08-30 | 2019-01-11 | 上海理工大学 | Progressive multi-focus lens distance region binary channels focal power measuring device and method |
| CN109556839A (en) * | 2019-01-08 | 2019-04-02 | 江苏明月光电科技有限公司 | A kind of more optical axis progressive multi-focus lens focal power measuring systems and method |
-
2017
- 2017-11-23 CN CN201721582792.3U patent/CN207423501U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186955A (en) * | 2018-08-30 | 2019-01-11 | 上海理工大学 | Progressive multi-focus lens distance region binary channels focal power measuring device and method |
| CN109556839A (en) * | 2019-01-08 | 2019-04-02 | 江苏明月光电科技有限公司 | A kind of more optical axis progressive multi-focus lens focal power measuring systems and method |
| CN109556839B (en) * | 2019-01-08 | 2024-04-02 | 明月镜片股份有限公司 | Multi-visual axis progressive addition lens focal power measurement system and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20181123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |