CN210572835U - External force type liquid zoom lens and camera - Google Patents
External force type liquid zoom lens and camera Download PDFInfo
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- CN210572835U CN210572835U CN201921945155.7U CN201921945155U CN210572835U CN 210572835 U CN210572835 U CN 210572835U CN 201921945155 U CN201921945155 U CN 201921945155U CN 210572835 U CN210572835 U CN 210572835U
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Abstract
The utility model discloses an external force type liquid zoom lens, which comprises a deformable container, a first transparent cover plate and a second transparent cover plate, wherein the deformable container is provided with a relative light inlet and a light outlet, and a containing cavity communicated between the light inlet and the light outlet, the first transparent cover plate is arranged at the light inlet of the deformable container, and the second transparent cover plate is arranged at the light outlet of the deformable container; the cavity is filled with first liquid and second liquid which are incompatible and have different refractive indexes, and an interface which divides the cavity into a first cavity communicated with the light inlet and a second cavity communicated with the light outlet is formed between the first liquid and the second liquid. The external force type liquid zoom lens forms an interface by utilizing the surface tension of two mutually incompatible liquids, the interface can generate enough deformation under smaller external force, the energy consumption is lower, and the lower internal pressure is not easy to cause liquid leakage. The utility model also discloses a camera.
Description
Technical Field
The utility model relates to a camera lens technique especially relates to an external force type liquid zoom and camera.
Background
Be provided with polylith lens in traditional camera lens, realize zooming the function through the relative movement in the optical axis direction between the polylith lens, structure and assembly are all comparatively complicated, and are bulky. With the development of technology, liquid zoom lenses with small size and simple structure have come to be available.
There are many technical solutions for implementing the liquid zoom lens, and the external force type liquid zoom lens is one of them. As shown in fig. 1, the conventional external force type liquid zoom lens includes a deformable container 1 ', a first transparent cover plate 2', a second transparent cover plate 3 'and a transparent elastic diaphragm 4', the first transparent cover plate 2 'is disposed at an entrance of the deformable container 1', the second transparent cover plate 3 'is disposed at an exit of the deformable container 1', and the transparent elastic diaphragm 4 'is disposed in a cavity of the deformable container 1' to divide the cavity into a first cavity and a second cavity; the first cavity is filled with a first liquid 5 'having a first refractive index and the second cavity is filled with a second liquid 6' having a second refractive index. The external force type liquid zoom lens enables the first cavity to be compressed and the second cavity to be expanded (or vice versa) through external force acting on the deformable container 1 ', and the transparent elastic diaphragm 4' forms arc surfaces with different radians under the combined action of the first liquid 5 'and the second liquid 6', so that the interface of the first liquid 5 'and the second liquid 6' has different refractive power, and the zooming function is realized.
However, in the external force type liquid zoom lens having the above structure, the transparent elastic diaphragm 4 'is required to separate the first liquid 5' and the second liquid 6 'to prevent mixing, and an interface for refracting light is formed between the first liquid 5' and the second liquid 6 ', so that the material requirement of the transparent elastic diaphragm 4' is high, the elastic coefficient of the existing plastic or silica gel is too large, a large external force is required to generate a sufficient deformation amount, the energy consumption is high, and the liquid is easily leaked due to a large internal pressure.
SUMMERY OF THE UTILITY MODEL
In order to solve the deficiencies of the prior art, the utility model provides an external force type liquid zoom utilizes the surface tension of incompatible two kinds of liquid to form interface, and interface also can produce sufficient deformation volume under less external force, and the energy consumption is lower, and lower interior pressure also is difficult for leading to liquid to leak.
The utility model also provides a camera.
The utility model discloses the technical problem that will solve realizes through following technical scheme:
an external force type liquid zoom lens comprises a deformable container, a first transparent cover plate and a second transparent cover plate, wherein the container is provided with a light inlet and a light outlet which are opposite, and a containing cavity communicated between the light inlet and the light outlet; the cavity is filled with first liquid and second liquid which are incompatible and have different refractive indexes, and an interface which divides the cavity into a first cavity communicated with the light inlet and a second cavity communicated with the light outlet is formed between the first liquid and the second liquid.
Further, one of the first liquid and the second liquid is an aqueous liquid, and the other is an oily liquid.
Furthermore, a hydrophobic layer is arranged on the inner side surface of the first transparent cover plate or the second transparent cover plate corresponding to the first liquid or the second liquid which is aqueous liquid, and/or on the inner wall of the corresponding first cavity or the corresponding second cavity.
Further, the axial length of the deformable container can be changed by electrifying.
Further, the deformable container is a piezoelectric ceramic container or a memory alloy container.
Furthermore, the device also comprises a first electrode arranged on the deformable container and close to the light inlet, and a second electrode arranged on the first cavity of the deformable container and close to the interface.
Furthermore, the light source device further comprises a third electrode arranged on the deformable container and close to the light outlet, and a fourth electrode arranged on a second cavity of the deformable container and close to the interface.
Further, the first transparent cover plate and/or the second transparent cover plate are/is aspheric lenses.
Furthermore, a first hydraulic sensor is arranged in the first cavity, and a second hydraulic sensor is arranged in the second cavity.
A camera comprises the external force type liquid zoom lens and an image sensor, wherein a light sensing surface of the image sensor faces to a light outlet of the external force type liquid zoom lens.
The utility model discloses following beneficial effect has: the external force type liquid zoom lens utilizes the surface tension of the first liquid and the second liquid which are mutually incompatible to form the interface, the interface can generate enough deformation amount under smaller external force, the energy consumption is lower, and the lower internal pressure is not easy to cause liquid leakage.
Drawings
Fig. 1 is a schematic view of a conventional external force type liquid zoom lens;
fig. 2 is a first schematic zooming diagram of the external force type liquid zoom lens provided by the present invention;
fig. 3 is a second schematic zooming view of the external force type liquid zoom lens provided by the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example one
As shown in fig. 2 and 3, an external force type liquid zoom lens includes a deformable container 1, a first transparent cover plate 2 and a second transparent cover plate 3, where the container has a light inlet and a light outlet opposite to each other, and a cavity communicated between the light inlet and the light outlet, the first transparent cover plate 2 is disposed at the light inlet of the container, and the second transparent cover plate 3 is disposed at the light outlet of the container; the cavity is filled with a first liquid 5 and a second liquid 6 which are incompatible and have different refractive indexes, and an interface 4 which divides the cavity into a first cavity communicated with the light inlet and a second cavity communicated with the light outlet is formed between the first liquid 5 and the second liquid 6.
The external force type liquid zoom lens utilizes the surface tension of the first liquid 5 and the second liquid 6 which are mutually incompatible to form the interface 4, the interface 4 can generate enough deformation under smaller external force, the energy consumption is lower, and the lower internal pressure is not easy to cause liquid leakage.
The density of the first liquid 5 and the density of the second liquid 6 are the same or similar to avoid gravity tilting the interface 4 between the two. Specifically, one of the first liquid 5 and the second liquid 6 may be an aqueous liquid (for example, a lithium bromide solution, a sodium sulfate solution, a potassium chloride solution, or the like), and the other may be an oily liquid (for example, a silicone oil, a castor oil, or the like).
Wherein, a hydrophobic layer 9 is arranged on the inner side surface of the first transparent cover plate 2 or the second transparent cover plate 3 corresponding to the first liquid 5 or the second liquid 6 which is aqueous liquid, and/or on the inner wall of the corresponding first cavity or the second cavity.
In this embodiment, the second liquid 6 is an aqueous liquid, so a hydrophobic layer 9 is disposed on the inner side surface of the second transparent cover plate 3 and/or the inner wall of the second cavity, the hydrophobic layer 9 can reduce the surface energy of the inner side surface of the second transparent cover plate 3 and/or the inner wall of the second cavity, so that the tension of the aqueous liquid (i.e., the second liquid 6) on the inner side surface of the second transparent cover plate 3 and/or the inner wall of the second cavity is increased, and the radian of the interface 4 between the first liquid 5 and the second liquid 6 is increased, which is beneficial to better focusing.
The hydrophobic layer 9 may be a teflon coating or the like.
The length of the deformable container 1 in the axial direction can be changed by electrifying, and specifically, the deformable container 1 can be a piezoelectric ceramic container or a memory alloy container and is of a cylindrical structure with an annular or frame-shaped cross section. When the device is used, only voltage needs to be loaded on the two axial ends of the deformable container 1, the length of the deformable container 1 between the two electrified ends can be changed, and the larger the current is, the larger the change is, and the change directions respectively correspond to the current directions.
The external force type liquid zoom lens further comprises a first electrode, a second electrode, a third electrode and a fourth electrode, wherein the first electrode is arranged at the position, close to the light inlet, of the deformable container 1, the first cavity of the deformable container 1 is close to the interface 4, the third electrode is arranged at the position, close to the light outlet, of the deformable container 1, and the fourth electrode is arranged at the position, close to the interface 4, of the second cavity of the deformable container 1.
A section of the deformable container 1 between the first electrode and the second electrode forms a first container section with variable electrifying axial length, and a section between the third electrode and the fourth electrode forms a second container section with variable electrifying axial length. When the device is used, as shown in fig. 2, forward current is introduced between the first electrode and the second electrode, the axial length of the first container section is increased, the hydraulic pressure in the first cavity is decreased, meanwhile, reverse current is introduced between the third electrode and the fourth electrode, the axial length of the second container section is decreased, the hydraulic pressure in the second cavity is increased, and the interface 4 between the first liquid 5 and the second liquid 6 is protruded towards the first cavity, which is equivalent to zooming; as shown in fig. 3, when a negative current is applied between the first electrode and the second electrode, the axial length of the first container section decreases, the hydraulic pressure in the first cavity increases, and a positive current is applied between the third electrode and the fourth electrode, the axial length of the second container section increases, the hydraulic pressure in the second cavity decreases, and the interface 4 between the first liquid 5 and the second liquid 6 protrudes toward the second cavity, which is equivalent to zooming.
Since the aberration problem of the liquid zoom lens is serious, it is preferable that the first transparent cover 2 and/or the second transparent cover 3 are aspheric lenses.
The external force type liquid zoom lens adopts aspheric lenses as the first transparent cover plate 2 and/or the second transparent cover plate 3 at the front end and the rear end to improve the aberration problem, and the first transparent cover plate 2 and/or the second transparent cover plate 3 can be made of PE, PET, PC, PMMA or PI and other plastic materials, and can also be made of glass materials.
A first hydraulic sensor 7 is arranged in the first cavity, and a second hydraulic sensor 8 is arranged in the second cavity.
This external force type liquid zoom adopts first hydraulic sensor 7 and second hydraulic sensor 8 come to monitor respectively the hydraulic pressure of first liquid 5 and second liquid 6, through the hydraulic pressure value that first hydraulic sensor 7 and second hydraulic sensor 8 output respectively can reveal to liquid and carry out real time monitoring, also can know liquid compression expansion degree through the hydraulic pressure value of output, and then calculate the degree of zooming, realize zooming the feedback.
The cross-sectional area of the cavity of the deformable container 1 is made slightly larger than the imaging area to reserve peripheral areas for arranging the first hydraulic sensor 7 and the second hydraulic sensor 8; the first hydraulic sensor 7 and the second hydraulic sensor 8 are respectively arranged on the peripheral areas of the inner side surfaces of the first transparent cover plate 2 and the second transparent cover plate 3, and respective connecting pins are led out from the connecting positions between the first transparent cover plate 2 and the deformable container 1 and between the second transparent cover plate 3 and the deformable container 1.
Example two
A camera includes the external force type liquid zoom lens and an image sensor, where a light-sensitive surface of the image sensor faces a light exit of the external force type liquid zoom lens.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is specific and detailed, but the invention can not be understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by adopting the equivalent substitution or equivalent transformation should fall within the protection scope of the present invention.
Claims (10)
1. An external force type liquid zoom lens comprises a deformable container, a first transparent cover plate and a second transparent cover plate, wherein the container is provided with a light inlet and a light outlet which are opposite, and a containing cavity communicated between the light inlet and the light outlet; the light source is characterized in that the accommodating cavity is filled with first liquid and second liquid which are incompatible and have different refractive indexes, and an interface which divides the accommodating cavity into a first cavity communicated with the light inlet and a second cavity communicated with the light outlet is formed between the first liquid and the second liquid.
2. The external force liquid zoom lens according to claim 1, wherein one of the first liquid and the second liquid is an aqueous liquid, and the other is an oily liquid.
3. The exogenic liquid zoom lens according to claim 2, wherein a hydrophobic layer is disposed on an inner side surface of the first transparent cover plate or the second transparent cover plate corresponding to the first liquid or the second liquid which is an aqueous liquid, and/or on an inner wall of the corresponding first cavity or the second cavity.
4. An external force type liquid zoom lens according to claim 1, wherein an axial length of the deformable container is electrically variable.
5. The external force liquid zoom lens according to claim 4, wherein the deformable container is a piezoceramic container or a memory alloy container.
6. The exo-hydraulic liquid zoom lens of claim 4, further comprising a first electrode disposed in the deformable container near the light entrance, and a second electrode disposed in the first cavity of the deformable container near the interface.
7. The external force type liquid zoom lens according to claim 1 or 6, further comprising a third electrode disposed in the deformable container near the light exit, and a fourth electrode disposed in the second cavity of the deformable container near the interface.
8. The external force liquid zoom lens according to claim 1, wherein the first transparent cover and/or the second transparent cover is an aspherical lens.
9. The exo-hydraulic liquid zoom lens according to claim 1, wherein a first hydraulic sensor is provided in the first cavity, and a second hydraulic sensor is provided in the second cavity.
10. A camera, characterized by comprising the external force type liquid zoom lens according to any one of claims 1 to 9 and an image sensor, wherein a light-sensitive surface of the image sensor faces a light outlet of the external force type liquid zoom lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921945155.7U CN210572835U (en) | 2019-11-12 | 2019-11-12 | External force type liquid zoom lens and camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921945155.7U CN210572835U (en) | 2019-11-12 | 2019-11-12 | External force type liquid zoom lens and camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210572835U true CN210572835U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921945155.7U Active CN210572835U (en) | 2019-11-12 | 2019-11-12 | External force type liquid zoom lens and camera |
Country Status (1)
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|---|---|
| CN (1) | CN210572835U (en) |
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2019
- 2019-11-12 CN CN201921945155.7U patent/CN210572835U/en active Active
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