CN201323012Y - Simple varifocus lens - Google Patents
Simple varifocus lens Download PDFInfo
- Publication number
- CN201323012Y CN201323012Y CNU2008202309058U CN200820230905U CN201323012Y CN 201323012 Y CN201323012 Y CN 201323012Y CN U2008202309058 U CNU2008202309058 U CN U2008202309058U CN 200820230905 U CN200820230905 U CN 200820230905U CN 201323012 Y CN201323012 Y CN 201323012Y
- Authority
- CN
- China
- Prior art keywords
- lens
- boss
- varifocus
- lug boss
- skeleton
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides a simple varifocus lens, wherein different focal lengths change is realized, the operation is convenient, and the basic knowledge of lens varifocus can be explained. The simple varifocus lens comprises a ring-shaped framework; a lug boss is arranged on the inner wall of the framework; elastic transparent films are respectively arranged on the left and the right surfaces of the lug boss; the transparent films are arranged at the two sides of the lug boss on the inner wall of the framework and between sealing rings that are matched with each other; the inner ring of the lug boss of the framework and the films form a hollow cavity; and the lug boss is provided with two through holes. In the utility model, liquid is filled in the hollow cavity to change the curvature of the lens surface, so as to change the refractive index to realize varifocus; in addition, the product cost is low, the different focal lengths change is realized, the operation is convenient, and the basic knowledge of lens varifocus can be explained.
Description
Technical field
The utility model belongs to a kind of physics subject experiment teaching instrument, relates in particular to a kind of optics teaching instrument.
Background technology
Physics is a subject based on experiment, in the new curriculum, has increased many experiments and practice course, and emphasizes that experimental teaching will give prominence to exploration, science, with the real daily life tight association.In the same industry, all the requirement according to the Ministry of Education has designed diversified simple and easy zoom lens at present.For example, the zoom lens that optical instrument factory, the Zhejiang Hangzhou Zhijiang River produces change focal length with two overlapping backs of identical lens, but this product can only change two posterior focal distances, and can not explain the ABC of lens zoom.
When light was injected optically denser medium from optically thinner medium, light will reflect, and the refraction angle is less than incident angle; The diameter one of convex lens regularly changes curvature mirror, and curvature is big more, the deflection of light that sees through big more, and focal length is short more.
The utility model content
The simple and easy zoom lens that the purpose of this utility model provides is the more than enough focal length zoom of a kind of energy, easy to operate, can illustrate lens zoom ABC.
In order to achieve the above object, the utility model is by the following technical solutions: comprise ring skeleton, inboard wall of skeleton is provided with boss, the boss left and right surfaces is respectively arranged with the rubber-like transparent membrane, transparent membrane is arranged between the closed-loop that inboard wall of skeleton boss both sides reach with it matches, ring forms cavity with film in the skeleton boss, and boss is provided with 2 through holes.
Be provided with conduit in the described through hole, a conduit communicates with atmosphere, and another conduit connects fluid injector.
Described rubber-like transparent membrane is transparent newborn rubber film.
Adopted the simple and easy zoom lens of above technical scheme, injected the curvature mirror that changes lens in the cavity, thereby changed index of refraction, realized zoom by liquid.Cost of products is low, and the more than enough focal length zoom of energy is easy to operate, and the ABC of lens zoom can be described.
Description of drawings
Fig. 1 is the sectional view of the simple and easy zoom lens of the utility model;
Fig. 2 is the structural representation of the simple and easy zoom lens of the utility model.
Embodiment
Embodiment
A kind of simple and easy zoom lens, comprise ring skeleton 2, the frame inwall is provided with boss 7, left and right surfaces is respectively arranged with rubber-like transparent membrane 4, transparent membrane is arranged on inboard wall of skeleton boss both sides and reaches between the closed-loop 3 that matches with it, ring forms cavity with film in the skeleton boss, and boss is provided with 2 through holes.Be provided with conduit in the through hole, a conduit communicates with atmosphere as vent port 1, and another conduit connects fluid injector 6 as water injection hole 5.
Described rubber-like transparent membrane is transparent newborn rubber film.
Skeleton external diameter 80mm, internal diameter 69mm, thick 17mm;
The high 10mm of boss, thick 6mm;
Closed-loop external diameter 69mm, internal diameter 59mm, thick 4mm.
During use, inject pure water by fluid injector in cavity, the air in the cavity is discharged by vent port, and the curvature mirror of convex lens becomes along with the increase of pure water injection rate IR greatly, thereby focal length shortens, and index of refraction is big more.See through experiment and can clearly understand the ultimate principle of focal length and index of refraction change.
Claims (3)
1, a kind of simple and easy zoom lens, it is characterized in that: comprise ring skeleton, inboard wall of skeleton is provided with boss, the boss left and right surfaces is respectively arranged with the rubber-like transparent membrane, transparent membrane is arranged between the closed-loop that inboard wall of skeleton boss both sides reach with it matches, ring forms cavity with film in the skeleton boss, and boss is provided with 2 through holes.
2, simple and easy zoom lens according to claim 1 is characterized in that: be provided with conduit in the described through hole, a conduit communicates with atmosphere, and another conduit connects fluid injector.
3, simple and easy zoom lens according to claim 2 is characterized in that: described rubber-like transparent membrane is transparent newborn rubber film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202309058U CN201323012Y (en) | 2008-12-17 | 2008-12-17 | Simple varifocus lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202309058U CN201323012Y (en) | 2008-12-17 | 2008-12-17 | Simple varifocus lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201323012Y true CN201323012Y (en) | 2009-10-07 |
Family
ID=41160388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202309058U Expired - Fee Related CN201323012Y (en) | 2008-12-17 | 2008-12-17 | Simple varifocus lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201323012Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891943A (en) * | 2016-05-25 | 2016-08-24 | 哈尔滨工程大学 | Dual-core optical fiber-based liquid dropping suspension type focus adjustable optical tweezers |
-
2008
- 2008-12-17 CN CNU2008202309058U patent/CN201323012Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891943A (en) * | 2016-05-25 | 2016-08-24 | 哈尔滨工程大学 | Dual-core optical fiber-based liquid dropping suspension type focus adjustable optical tweezers |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102879900A (en) | Zoom micro lens based on piezoelectric inverse effect | |
| CN103149703A (en) | Liquid self-adapted focusing glasses | |
| MX2014010359A (en) | Method and apparatus for modulating prism and curvature change of refractive interfaces. | |
| CN206515544U (en) | Small-sized super large aperture tight shot | |
| CN201281769Y (en) | Liquid lens component | |
| CN103163577B (en) | Variable-focus elastic lens group | |
| WO2009035072A1 (en) | Immersion microscope objective lens | |
| CN201323012Y (en) | Simple varifocus lens | |
| CN113267887A (en) | Flexible zoom lens and zooming method | |
| CN204855918U (en) | Small -size fisheye lens | |
| CN106125377A (en) | Eliminate display screen black surround and the compound glass of the black seam of mosaic screen optic splice | |
| CN203117444U (en) | Variable-focus convex-concave interconverting lens | |
| CN102129099A (en) | Handheld variable optical attenuator | |
| CN203894424U (en) | Optical protection film having 3D visual effect | |
| CN102162914B (en) | Voltage-controlled variable optical attenuator | |
| CN2608997Y (en) | Varifocus lens | |
| CN204832648U (en) | Camera lens with super large angle of vision | |
| CN201974597U (en) | Piston control liquid presbyopia and myopia dual-purpose scope | |
| CN2555510Y (en) | Lens for physics teaching demonstration | |
| CN2138304Y (en) | Vari-focal lens | |
| CN201917730U (en) | Diaphragm regulation-control liquid presbyopic-myopic two-function lens | |
| CN202486340U (en) | Hydraulic lens | |
| CN102053379A (en) | Stereo image display device | |
| CN101762862A (en) | Convex mirror and concave mirror capable of fast focus change | |
| CN202948639U (en) | Eye simulator with optical bench and water convex lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20121217 |