CN108957736B - The flexible zoom lens of mechanical force actuating - Google Patents
The flexible zoom lens of mechanical force actuating Download PDFInfo
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- CN108957736B CN108957736B CN201810830267.1A CN201810830267A CN108957736B CN 108957736 B CN108957736 B CN 108957736B CN 201810830267 A CN201810830267 A CN 201810830267A CN 108957736 B CN108957736 B CN 108957736B
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- Prior art keywords
- lens
- cable
- anchor point
- mechanical force
- frame
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0875—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
A kind of flexible zoom lens of mechanical force actuating, comprising: frame assembly is provided with multiple first anchor points along the circumferential direction of the frame assembly；Lens are located in the region that the frame assembly limits, the circumferential direction of the lens are provided with multiple second anchor points；Cable, the cable successively alternately bypass first anchor point and second anchor point, and one end of the cable connects one of the frame assembly or the lens, and the other end of the cable is free end；When applying pulling force to the free end, the cable can be made to be tensioned, so that the lens be made to be deformed and zoom.In the flexible zoom lens that mechanical force of the invention activates, radial forces are applied to change the curvature of lens cambered surface, to change the focal length of lens in lens periphery by cable.This flexibility zoom lens compact, structure are simple, cheap.
Description
Technical field
The present invention relates to the flexible zoom lens that optical lens field more particularly to a kind of mechanical force activate.
Background technique
Currently, the zoom of lens needs to be axially moveable lens in lens group, to change distance between mirrors, and then change
The focal length of lens group.The lens group made in the way of such zoom is needed using multiple lens, thus volume and weight compared with
Greatly, structure is complicated, and cost is higher.
Summary of the invention
In order to make up disadvantages mentioned above, the present invention is directed to propose a kind of compact, structure is simple, cheap machinery
The flexible zoom lens of power actuating.
A kind of flexible zoom lens of mechanical force actuating, comprising:
Frame assembly is provided with multiple first anchor points along the circumferential direction of the frame assembly；
Lens are located in the region that the frame assembly limits, the circumferential direction of the lens are provided with multiple second anchors
Point；
Cable, the cable successively alternately bypass first anchor point and second anchor point, and one end of the cable connects
One of the frame assembly and the lens are connect, the other end of the cable is free end；
When applying pulling force to the free end, the cable can be made to be tensioned, thus be deformed the lens and
Zoom.
In at least one embodiment, second anchor point is located at the peripheral part of the lens.
In at least one embodiment, first anchor point and second anchor point are respectively along the frame assembly and institute
The circumferential direction for stating lens is uniformly distributed and quantity is identical.
In at least one embodiment, the quantity of first anchor point and second anchor point is 8, and described
One anchor point is not located across on the straight line at the center of second anchor point and the lens, thus make around first anchor point and
The cable of second anchor point is formed as octagonal star structure.
In at least one embodiment, the frame assembly includes the first frame, the second frame and support column, and described the
One frame is identical with second frame size, by the support column by first frame and second frame coaxially
Connection；Wherein, the support column is configured to first anchor point.
In at least one embodiment, second anchor point is the through-hole for being opened in the lens.
In at least one embodiment, the through-hole is embedded in the smooth ring in surface.
In at least one embodiment, the lens are circle, the frame assembly be it is cyclic annular and with the lens
Coaxially.
In at least one embodiment, the upper and lower surface of the lens is the arc surface of evagination, to make the lens
It is configured to convex lens.
In at least one embodiment, under the original state that the cable is in relaxation, the arc surface has most
Small spherical radius, i.e. lens have the smallest focal length.
In the flexible zoom lens that mechanical force of the invention activates, radial forces are applied in lens periphery by cable
Change the curvature of lens cambered surface, to change the focal length of lens.This flexibility zoom lens compact, structure is simple, makes
Valence is cheap.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram of the flexible zoom lens of the mechanical force actuating of embodiment according to the present invention.
Fig. 2 shows the sides of the frame assembly of the flexible zoom lens of the mechanical force of embodiment according to the present invention actuating
View.
Fig. 3 shows the structure of the convex lens of the flexible zoom lens of the mechanical force actuating of embodiment according to the present invention
Schematic diagram.
Fig. 4 shows the section of the convex lens of the flexible zoom lens of the mechanical force actuating of embodiment according to the present invention
Structural schematic diagram.
Description of symbols
The lower arc of cambered surface 23 on 1 frame assembly, 11 first 2 lens of frame 12 second frame, 13 support column, 21 through-hole 22
3 cable of face.
Specific embodiment
Exemplary embodiments of the present invention are described with reference to the accompanying drawings.It should be appreciated that these specific descriptions are only used for
How teaching those skilled in the art implement the present invention, rather than all feasible modes that exhaustion is of the invention, without in
It limits the scope of the invention.
As shown in Figure 1, the flexible zoom lens of mechanical force actuating include frame assembly, lens and cable, incited somebody to action by cable
Lens are connect with frame assembly.
Frame assembly, lens and cable are illustrated below:
Frame assembly
As shown in Fig. 2, frame assembly 1 includes the first frame 11, the second frame 12 and support column 13, the first frame 11 and the
Two frames 12 are that circular and size is identical, are coaxially connected the first frame 11 and the second frame 12 by support column 13.
Eight support columns 13 are uniformly arranged along the circumferential direction of the first frame 11 or the second frame 12.
In order to reduce the friction between cable 3 and support column 13, with coating lubricating oil or can make on 13 surface of support column
Support column 13 is made with the small metal material of coefficient of friction.It should be understood that the surface treatment side of the support column in the present invention
Formula or material are without being limited thereto, can be any mode that can reduce and rub between cable and support column.
Lens
As shown in Figure 3, Figure 4, lens 2 are circular convex lens, and lens 2 are located in the region of the restriction of frame assembly 1, saturating
The peripheral part of mirror 2 offers eight through-holes 21, this eight through-holes 21 are uniformly arranged along the circumferential direction of lens 2.
In order to reduce the friction between through-hole 21 and cable 3, the smooth becket in surface can be embedded in through-hole 21.For
The friction between through-hole and cable 3 is further decreased, it on the surface of becket can be with coating lubricating oil.It should be understood that
The surface treatment mode of through-hole in the present invention is without being limited thereto, can be any can reduce and rubs between cable and through-hole
Mode.
Lens 2 use such as PDMS (polydimethylsiloxane, dimethyl silicone polymer, a kind of polymerizable organosilicon
Object) silastic material be made, this material have translucency, flexibility and ductility.
In a kind of possible embodiment, lens 2, which can be, is formed solid lens 2, i.e. lens 2 by silastic material
Upper cambered surface 22 and lower camber side 23 between be solid.
In alternatively possible embodiment, the medium of light transmission can be filled in lens 2, in the upper cambered surface 22 of lens 2
Cavity is formed between lower camber side 23, and the medium of light transmission can be filled in cavity.
As shown in Figure 1, lens 2 are placed in the region of the restriction of frame assembly 1, support column 13 is not located across 21 He of through-hole
On the straight line at the center (center of circle) of lens 2, one end of cable 3 is fixed on a support column 13 of frame assembly 1, cable 3 according to
Secondary alternating bypasses through-hole 21 and support column 13, and cable 3 is made to be formed as octagonal star.By applying pulling force in the free end of cable 3,
To make cable 3 apply pulling force to lens 2, the curvature that 2 under tension of lens will lead to the cambered surface of lens 2 reduces, and then adjusts
The focal length of lens 2.
Illustrate the zoom working principle of flexible zoom lens below:
Since eight through-holes 21 and eight support columns 13 are uniformly distributed circumferentially, so applying when cable 3 tenses
It is equal in magnitude in the resultant force of each through-hole 21, and the direction of resultant force is by 2 center of lens, enable 2 homogeneous deformation of lens.
A certain range of pulling force is applied to cable 3, lens 2 are deformed by pulling force, and the profile of the cambered surface of lens 2 can be approximate
For spherical surface.
The focal length of lens 2 can be calculated according to focal length formula, focal length formula:
F is the focal length of lens 2, n in focal length formulalFor the refractive index of lens 2, nmFor the refractive index of air, R1For lens 2
Upper cambered surface 22 radius, R2For the radius of the lower camber side 23 of lens 2, wherein R1For positive value, R2For negative value.
The relaxation of cable 3 under natural conditions, lens 2 will not under tension, the half of the cambered surface of the lens 2 under this state
Diameter is minimum, and lens 2 have the smallest focal length.When tensing the free end of cable 3, lens 2 are by uniform pulling force, so that lens
The radius absolute value of the cambered surface of 2 two sides increases, and according to above-mentioned focal length formula, the focal length of lens 2 increases.Therefore, according to requiring
Focal-distance tuning range design lens 2 when, should as requested minimum focus design lens 2 two sides cambered surface radius.
In a kind of possible embodiment, the upper cambered surface 22 of lens 2 is identical with the radius of lower camber side 23.
Certainly, the present invention is not limited to the above embodiments, and those skilled in the art under the teachings of the present invention can be to this
The above embodiment of invention makes various changes and modification, without departing from the scope of the present invention.
(1) in the above-described embodiment, only illustrate the present invention for eight through-holes 21 and eight support columns 13 are set, so
And the invention is not limited thereto, the quantity of through-hole 21 and support column 13 can adjust according to actual needs.Through-hole 21 and support column 13
The very few lens 2 that will lead to of quantity deform unevenly, the quantity of through-hole 21 and support column 13 excessively will lead to lens 2 intensity and
Decline.
(2) in the above-described embodiment, the edge of lens 2 is provided with through-hole 21, however the invention is not limited thereto, Ke Yitong
Cross the edge that other for example raised anchor point structures make cable cross lens 2 around 3.
(3) in the above-described embodiment, frame assembly 1 includes support column 13, however the invention is not limited thereto, can pass through
Such as other anchor point structures of through-hole make cable cross frame assembly around 3.
(4) in the above-described embodiment, one end of cable 3 is fixed on a support column 13 of frame assembly 1, however this
Invent without being limited thereto, one end of cable 3 may be also secured in the through-hole 21 of lens 2.
Claims (10)
1. a kind of flexible zoom lens of mechanical force actuating, including frame assembly and lens, the lens are located at the frame set
In the region that part limits, the circumferential direction of the frame assembly is provided with multiple first anchor points, which is characterized in that the mechanical force causes
Dynamic flexible zoom lens further include: cable,
The circumferential direction of the lens is provided with multiple second anchor points；
The cable successively alternately bypasses first anchor point and second anchor point, and one end of the cable connects the frame
One of component and the lens, the other end of the cable are free end；
When applying pulling force to the free end, the cable can be made to be tensioned, so that the lens be made to be deformed and zoom.
2. the flexible zoom lens of mechanical force actuating according to claim 1, which is characterized in that second anchor point is located at
The peripheral part of the lens.
3. the flexible zoom lens of mechanical force actuating according to claim 1, which is characterized in that first anchor point and institute
State that the second anchor point is uniformly distributed along the circumferential direction of the frame assembly with the lens respectively and quantity is identical.
4. the flexible zoom lens of mechanical force actuating according to claim 3, which is characterized in that first anchor point and institute
The quantity for stating the second anchor point is 8, and first anchor point is not located across the center of second anchor point and the lens
Straight line on, to make to be formed as octagonal star structure around the cable of first anchor point and second anchor point.
5. the flexible zoom lens of the actuating of mechanical force described in any one of -4 according to claim 1, which is characterized in that the frame
Frame component includes the first frame, the second frame and support column, and first frame is identical with second frame size, passes through institute
Support column is stated coaxially to connect first frame and second frame；Wherein, the support column is configured to described first
Anchor point.
6. the flexible zoom lens of the actuating of mechanical force described in any one of -4 according to claim 1, which is characterized in that described the
Two anchor points are the through-hole for being opened in the lens.
7. the flexible zoom lens of mechanical force actuating according to claim 6, which is characterized in that the through-hole is embedded in table
The smooth ring in face.
8. the flexible zoom lens of the actuating of mechanical force described in any one of -4 according to claim 1, which is characterized in that described
Mirror is circle, and the frame assembly is cyclic annular and coaxial with the lens.
9. the flexible zoom lens of mechanical force actuating according to claim 8, which is characterized in that the upper following table of the lens
Face is the arc surface of evagination, so that the lens be made to be configured to convex lens.
10. the flexible zoom lens of mechanical force actuating according to claim 9, which is characterized in that be in the cable
Under loose original state, the arc surface has the smallest spherical radius, i.e. lens have the smallest focal length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830267.1A CN108957736B (en) | 2018-07-25 | 2018-07-25 | The flexible zoom lens of mechanical force actuating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830267.1A CN108957736B (en) | 2018-07-25 | 2018-07-25 | The flexible zoom lens of mechanical force actuating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108957736A CN108957736A (en) | 2018-12-07 |
| CN108957736B true CN108957736B (en) | 2019-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810830267.1A Active CN108957736B (en) | 2018-07-25 | 2018-07-25 | The flexible zoom lens of mechanical force actuating |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4444471A (en) * | 1982-03-12 | 1984-04-24 | Polaroid Corporation | Variable focus lens system employing elastomeric lens |
| GB2183059A (en) * | 1985-11-05 | 1987-05-28 | Michel Treisman | Suspension system for a flexible optical membrane |
| CN1573962A (en) * | 2003-06-17 | 2005-02-02 | Lg电子有限公司 | Micro actuator for controlling focal depth |
| CN101522357A (en) * | 2006-10-12 | 2009-09-02 | 日立造船株式会社 | Laser working apparatus |
-
2018
- 2018-07-25 CN CN201810830267.1A patent/CN108957736B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4444471A (en) * | 1982-03-12 | 1984-04-24 | Polaroid Corporation | Variable focus lens system employing elastomeric lens |
| GB2183059A (en) * | 1985-11-05 | 1987-05-28 | Michel Treisman | Suspension system for a flexible optical membrane |
| CN1573962A (en) * | 2003-06-17 | 2005-02-02 | Lg电子有限公司 | Micro actuator for controlling focal depth |
| CN101522357A (en) * | 2006-10-12 | 2009-09-02 | 日立造船株式会社 | Laser working apparatus |
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| Publication number | Publication date |
|---|---|
| CN108957736A (en) | 2018-12-07 |
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