CN209070209U - A kind of big depth of field high-precision telecentric lens - Google Patents
A kind of big depth of field high-precision telecentric lens Download PDFInfo
- Publication number
- CN209070209U CN209070209U CN201822145399.9U CN201822145399U CN209070209U CN 209070209 U CN209070209 U CN 209070209U CN 201822145399 U CN201822145399 U CN 201822145399U CN 209070209 U CN209070209 U CN 209070209U
- Authority
- CN
- China
- Prior art keywords
- lens
- telecentric
- telecentric lens
- liquid
- liquid lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Lenses (AREA)
Abstract
The utility model discloses a kind of big depth of field high-precision telecentric lens, including telecentric lens and liquid lens；The liquid lens are arranged on telecentric lens；The liquid lens include lens driver and liquid lens system；The lens driver changes the curvature of liquid lens system by current or voltage.The utility model can realize the effect for increasing the depth of field on traditional big multiplying power telecentric lens；Reduce mechanical wear, measurement reaction is rapider, and stability is good；Multiple combinations usage mode meets the measurement demand of different object distances.
Description
Technical field
The utility model relates to the big depth of field high magnification telecentric lens that a kind of telecentric lens and liquid lens are applied in combination.
Background technique
Telecentric lens are current machine vision, one of common testing lens, common lens shooting figure in automatic detection
As will appear near big and far smaller situation due to object distance difference, this problem of telecentric lens very good solution, in certain model
In enclosing, the enlargement ratio of the object of shooting be will not change, and is realized and is detected to the high-precision of object.Telecentric lens high-resolution simultaneously
Rate, the big depth of field, low telecentricity degree, the characteristic of low distortion make it have wider application in future.
Liquid lens are to develop faster novel lens in recent years, have use in civilian mobile phone, industrial test at present,
The curvature for changing light passing liquid (or film) by electric current or voltage is realized to its spy of the rapid focus of different scenes
Point is that focusing speed is fast, no mechanical loss and optical mirror slip abrasion.
In the prior art, telecentric lens can satisfy most of test request, but since own characteristic limits, big amplification
Multiplying power and the big depth of field can not often obtain simultaneously, it is necessary to sacrifice first, but some test environment often need big amplification simultaneously
Multiplying power and the big depth of field, individual telecentric lens are unable to satisfy test request.
Utility model content
The utility model aim is: providing a kind of high magnification, high-resolution, the telecentric lens and liquid lens group of low abrasion
What conjunction used, stability good big depth of field high magnification and high-precision telecentric lens.
The technical solution of the utility model is: a kind of big depth of field high magnification telecentric lens, including telecentric lens and liquid lens
Head；The liquid lens are arranged on telecentric lens；The liquid lens include lens driver and liquid lens system；It is described
Lens driver changes the curvature of liquid lens system by current or voltage.
Preferably, the telecentric lens and liquid lens are using flexible connection.
Preferably, the telecentric lens include telecentric objective group and telecentricity eyepiece group.
Preferably, the telecentric objective group and telecentricity eyepiece group are using flexible connection.
The utility model has the advantages that:
1. the effect for increasing the depth of field can be realized on traditional big multiplying power telecentric lens；
2. reducing mechanical wear, measurement reaction is rapider, and stability is good；
3. multiple combinations usage mode meets the measurement demand of different object distances.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and embodiments:
A kind of Fig. 1 schematic view of the front view of big depth of field high-precision telecentric lens described in the utility model；
A kind of Fig. 2 schematic cross-sectional view of big depth of field high-precision telecentric lens described in the utility model；
A kind of Fig. 3 right side structural representation of big depth of field high-precision telecentric lens described in the utility model；
A kind of Fig. 4 schematic view of the front view of the scheme one of big depth of field high-precision telecentric lens described in the utility model；
A kind of Fig. 5 schematic view of the front view of the scheme two of big depth of field high-precision telecentric lens described in the utility model；
A kind of Fig. 6 schematic view of the front view of the scheme three of big depth of field high-precision telecentric lens described in the utility model；
A kind of Fig. 7 schematic view of the front view of the scheme four of big depth of field high-precision telecentric lens described in the utility model
Wherein: 1, telecentric lens；2, liquid lens；11, telecentric objective group；12, telecentricity eyepiece group；21, lens driver；
22, liquid lens system.
Specific embodiment
Embodiment one:
As illustrated in the accompanying drawings from 1 to 3, a kind of big depth of field high-precision telecentric lens, including telecentric lens 1 and liquid lens 2；It is described
Liquid lens 2 are arranged on telecentric lens 1；The liquid lens 2 include lens driver 21 and liquid lens system 22；It is described
Lens driver 21 changes the curvature of liquid lens system 22 by current or voltage；The telecentric lens 1 and liquid lens 2 are adopted
With flexible connection；The telecentric lens 1 include telecentric objective group 11 and telecentricity eyepiece group 12；The telecentric objective group 11 and telecentricity
12 groups of eyepiece using threaded connection.
A kind of specifically used method of big depth of field high-precision telecentric lens is as follows:
A, the big depth of field high magnification telecentric lens of this case and camera are fixed on designated position, testee is placed on tested
In point, by adjusting software, 2 both ends current or voltage of liquid lens is adjusted, to change grease intersection in liquid lens
The hydrophily of film, and then make thin film shape makes measured object at clearly as and carrying out to adjust the curvature of liquid lens 2
Measurement analysis；
B, when testee shift in position, the driving of software control liquid lens adjusts 2 both ends electric current of liquid lens or electricity
Pressure, to change the hydrophily of grease intersection film in liquid lens, and then makes thin film shape, to adjust liquid lens 2
Curvature, make its rapid focus to testee, and measure analysis；
It c, can when the distance of testee changes or need in a certain range to test a certain range of whole objects
2 both ends current or voltage of liquid lens is automatically adjusted by algorithm, to change the parent of grease intersection film in liquid lens
It is aqueous, and then make thin film shape, to adjust the curvature of liquid lens 2, realizes rapid focus and shooting, coverage take comprehensively
Certainly in the Curvature varying range of film.
The external light source irradiation reflected light of testee is entered greatly by the telecentric objective group 11 in telecentric lens 1
Depth of field telecentric lens, external image acquires equipment and carries out Image Acquisition by telecentric lens 1 and liquid lens 2, when shooting object
When not in standard object distance range or not in field depth, telecentric lens 1 just can not shoot image, pass through software tune at this time
The electric current of the lens driver 21 of liquid lens 2 is saved, and then adjusts the curvature of liquid lens 2, shooting is made to focus on testee
On, clear measurement is completed, electric current is adjusted and object can be measured clearly in a certain range, this distance range depends on liquid
Camera lens curvature adjustable range increases the depth of field to increase test object distance range.
The placement location of the liquid lens 2 of this case can there are many scheme, packets according to different telecentric lens 1 or test request
It includes one liquid lens 2 of scheme to be placed at dipped beam door screen (such as Fig. 2), two liquid lens 2 of scheme are placed between eyepiece and camera (such as
Fig. 4), three liquid lens 2 of scheme are placed between object lens and testee (such as Fig. 5) or four liquid lens 2 of scheme replace camera lens
Eyepiece and object lens (such as Fig. 6,7), driving it is integrated and external etc..As long as the therefore group of telecentric lens 1 and liquid lens 2
It closes, no matter liquid lens 2 are placed on any position of telecentric lens 1 or all can be considered alternative solution instead of any original part.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed of the utility model
All equivalent modifications or change completed under spirit and technical idea, should be covered by the claim of the utility model.
Claims (4)
1. a kind of big depth of field high-precision telecentric lens, it is characterised in that: including telecentric lens and liquid lens；The liquid lens
It is arranged on telecentric lens；The liquid lens include lens driver and liquid lens system；The lens driver passes through
The curvature of current or voltage change liquid lens system.
2. a kind of big depth of field high-precision telecentric lens according to claim 1, it is characterised in that: the telecentric lens and liquid
State camera lens is using flexible connection.
3. a kind of big depth of field high-precision telecentric lens according to claim 1, it is characterised in that: the telecentric lens include
Telecentric objective group and telecentricity eyepiece group.
4. a kind of big depth of field high-precision telecentric lens according to claim 3, it is characterised in that: the telecentric objective group and
Telecentricity eyepiece group is using flexible connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145399.9U CN209070209U (en) | 2018-12-20 | 2018-12-20 | A kind of big depth of field high-precision telecentric lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145399.9U CN209070209U (en) | 2018-12-20 | 2018-12-20 | A kind of big depth of field high-precision telecentric lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209070209U true CN209070209U (en) | 2019-07-05 |
Family
ID=67101889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822145399.9U Active CN209070209U (en) | 2018-12-20 | 2018-12-20 | A kind of big depth of field high-precision telecentric lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209070209U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113495348A (en) * | 2020-04-07 | 2021-10-12 | 苏州协尔智能光电有限公司 | Telecentric optical system and telecentric lens |
| CN113866965A (en) * | 2021-09-18 | 2021-12-31 | 苏州灵猴机器人有限公司 | Oblique image telecentric lens with high precision and large depth of field |
| CN113866965B (en) * | 2021-09-18 | 2024-05-31 | 苏州灵猴机器人有限公司 | Oblique image telecentric lens with high precision and large depth of field |
-
2018
- 2018-12-20 CN CN201822145399.9U patent/CN209070209U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113495348A (en) * | 2020-04-07 | 2021-10-12 | 苏州协尔智能光电有限公司 | Telecentric optical system and telecentric lens |
| CN113866965A (en) * | 2021-09-18 | 2021-12-31 | 苏州灵猴机器人有限公司 | Oblique image telecentric lens with high precision and large depth of field |
| CN113866965B (en) * | 2021-09-18 | 2024-05-31 | 苏州灵猴机器人有限公司 | Oblique image telecentric lens with high precision and large depth of field |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108152869B (en) | Small step focusing method suitable for bionic vision rapid focusing | |
| CN105578029B (en) | A kind of auto-focusing searching algorithm of multi-scale variable step size | |
| CN103364011B (en) | Ultra-large vision field multiple goal object simulation system | |
| CN203231737U (en) | Photoelectric auto-collimator | |
| CN105675266A (en) | Device and method for measuring modulation transfer function of optical lens based on infinite conjugate optical path | |
| CN102540636A (en) | lens calibration system | |
| CN105791691B (en) | A kind of autofocus and its real-time auto focusing method | |
| CN103063415B (en) | A kind of long focus length of lens measuring method based on Moire fringe coupling | |
| CN104111485A (en) | Stereo imaging based observation method for raindrop size distribution and other rainfall micro physical characteristics | |
| CN104360465A (en) | Zooming telecentric lens | |
| CN105157625A (en) | Fiber end face microscopic interferometry system based on zoom imaging lens | |
| CN104360463A (en) | Three-distal coaxial illumination imaging optical system | |
| CN209070209U (en) | A kind of big depth of field high-precision telecentric lens | |
| CN211061152U (en) | Lens detection equipment integrating field of view, modulation transfer function and centering measurement | |
| CN107589518A (en) | Optical lens and the laser alignment measuring apparatus with the optical lens | |
| CN107607050A (en) | Laser thickness measuring apparatus | |
| CN105301279B (en) | A kind of speed measurement method based on camera, device and mobile terminal | |
| CN110057294A (en) | Optical optical tweezers system particle axial direction nano-grade displacement measurement method | |
| CN105716831B (en) | A kind of object simulation device system of big visual field super big dynamic range object distance | |
| CN104880913A (en) | Focusing-leveling system for increasing process adaptability | |
| CN201757320U (en) | Optical lighting system and non-contact measuring device | |
| CN108594424A (en) | A kind of zoomable doubly telecentric optical detection apparatus | |
| CN106896109A (en) | Systems for optical inspection and its detection method | |
| CN204188874U (en) | A kind of zoom telecentric lens | |
| CN101603859B (en) | Femtojoule level laser micro energy meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |