CN212207933U - Lens focusing device and imaging equipment - Google Patents
Lens focusing device and imaging equipment Download PDFInfo
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- CN212207933U CN212207933U CN202020106838.XU CN202020106838U CN212207933U CN 212207933 U CN212207933 U CN 212207933U CN 202020106838 U CN202020106838 U CN 202020106838U CN 212207933 U CN212207933 U CN 212207933U
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Abstract
The utility model discloses a camera lens focusing device and imaging equipment, it includes: and the position adjusting assembly is movably connected with the movement assembly and is used for driving the movement assembly to integrally translate along the direction of the optical axis. The focusing function can be realized by adjusting the distance between the optical lens and the detector in a manner of only adjusting the position of the detector (such as an infrared detector) on the optical axis.
Description
Technical Field
The utility model relates to an optical instrument field specifically is a camera lens focusing device and imaging equipment.
Background
In the infrared imaging device, the distance between the infrared lens and the infrared detector needs to be adjusted to converge the light of the infrared lens on the imaging surface of the infrared detector so as to ensure the imaging quality, and the process is focusing. Focusing is usually realized by adjusting the interval of a part of or the whole group of infrared lens lenses at present, so that the position of light convergence is further changed, and at the moment, an infrared core assembly (comprising an infrared detector, an imaging circuit and the like) is fixed. However, according to the above focusing method, if one infrared movement assembly is compatible with lenses with various focal lengths, each lens must have a focusing function, which complicates the overall design of the product and increases the weight and cost of the whole machine.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, the utility model provides a camera lens focusing device and imaging device, it can be through only adjusting the detector (for example infrared detector) the distance between the mode adjustment optical lens of the last position of optical axis and the detector to realize the focusing function.
In order to achieve the above object, the utility model provides a following technical scheme:
in one aspect, a lens focusing apparatus is provided, which includes: and the position adjusting assembly is movably connected with the movement assembly and is used for driving the movement assembly to integrally translate along the direction of the optical axis.
Preferably, the position adjustment assembly includes: a guide member connected to an outer wall surface of the core assembly; and the focusing knob is provided with a non-circular arc curve groove matched with the guide piece, and when the focusing knob rotates, the guide piece can be driven to move in the non-circular arc curve groove, so that the whole movement assembly is driven to translate along the direction of an optical axis.
Preferably, the guide member is integrally formed with the movement assembly.
Preferably, the non-circular arc curved groove is an involute curved groove.
Preferably, the position adjustment assembly includes: and the focusing barrel is connected with the movement assembly and can drive the movement assembly to integrally translate along the optical axis direction by shifting/rotating the focusing barrel.
Preferably, the focusing barrel is in threaded connection with the outer wall surface of the movement assembly through a threaded part arranged on the outer wall surface of the movement assembly.
In one aspect, there is also provided an image forming apparatus, including: a lens barrel; an optical lens mounted in the lens barrel; the lens barrel is connected with the sighting telescope shell, and a notch is formed in the sighting telescope shell; the movement assembly is positioned in the whole formed by connecting the lens barrel and the sighting telescope shell; and the focusing knob is connected with the outer wall surface of the sighting telescope shell, and the guide piece penetrates through the notch and then extends out and is embedded into the non-circular arc curve groove.
In one aspect, there is also provided an image forming apparatus, including: a lens barrel; an optical lens mounted in the lens barrel; the sighting telescope shell is connected with the lens barrel, and an opening is formed in the sighting telescope shell; the movement assembly is positioned in the whole formed by connecting the lens barrel and the sighting telescope shell; and the lens focusing device; the focusing barrel is arranged around the outer wall surface of the sighting telescope shell and is connected with the movement assembly through the opening.
Preferably, the image forming apparatus further includes: the positioning column and a guide groove are formed in the outer wall surface of the sighting telescope shell along the circumferential direction; one end of the positioning column is connected with the inner wall surface of the focusing barrel, the other end of the positioning column extends into the guide groove, and when the focusing barrel is shifted/rotated, the positioning column correspondingly translates or rotates in the guide groove.
Preferably, the optical lens is a focus-adjustable lens.
Compared with the prior art, the utility model discloses possess following beneficial effect:
the lens focusing device in the utility model has simple structure, few required components and light weight, and can realize the adjustment of the focal length of the whole lens without adjusting the distance between optical lens lenses (such as infrared lenses) only by the translation of the core component in the direction of the optical axis, thereby being capable of being flexibly matched with lenses with different focal lengths for use; meanwhile, the focusing lens can be matched, so that different focusing requirements are further met.
Drawings
FIG. 1 is a partial longitudinal sectional view of an image forming apparatus in embodiment 3;
FIG. 2 is a bottom view of the non-curvilinear strip groove of example 1;
FIG. 3 is a longitudinal sectional view of the image forming apparatus according to embodiments 4 and 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a lens focusing device, it includes: and the position adjusting component is movably connected with the movement component 100 containing the detector 101 and is used for driving the movement component 100 to translate integrally along the optical axis direction, so that the detector 101 is far away from/close to the optical lens 200 in the optical axis direction I to realize the adjustment of the focal length of the whole machine. The movement assembly 100 includes a detector 101 and an imaging circuit, where the detector 101 has an imaging surface, and preferably, the detector 101 may be an infrared detector, and may also be other detector types, which are not limited herein.
Different implementations of the lens focusing apparatus are explained below by embodiments 1-2.
Example 1:
as shown in fig. 1-2, the position adjustment assembly of the lens focusing apparatus in this embodiment includes: a guide 1 connected to an outer wall surface of the movement assembly 100, and at the same time, the guide 1 may be integrally formed with the movement assembly 100 for easy manufacturing; and the focusing knob 2 is provided with a non-circular arc curve groove 21 matched with the guide piece 1, and when the focusing knob 2 rotates, the guide piece 1 can be driven to move in the non-circular arc curve groove 21, so that the whole movement assembly 100 is driven to translate along the optical axis direction I, and the detector 101 is far away from/close to the optical lens 200 in the optical axis direction I, so that the focal length of the whole machine can be adjusted.
Specifically, the non-circular arc curved groove 21 in the present embodiment is an involute curved groove that extends along the rotation center O of the focus knob 2. The guide 1 is embedded in the non-circular arc curve groove 21, and after being matched with the focusing knob 2, the focusing knob 2 is rotated, the guide 1 moves in the non-circular arc curve groove 21, so that the whole movement assembly 100 is driven to translate along the optical axis direction I, the adjustment of the distance between the detector 101 and the optical lens 200 is realized, and the adjustment of the focal length of the whole machine is further completed, for example, when the guide 1 moves to a position where the rotation center O is closer (such as a point P1 in fig. 2), the focal length of the whole machine is adjusted to be far focus, and conversely, when the guide 1 moves to a position where the rotation center O is farther (such as a point P2 in fig. 2), the focal length of the whole machine is adjusted to be near focus.
Example 2:
the present embodiment differs from embodiment 1 only in that, as shown in fig. 3, the position adjustment assembly of the lens focus adjusting apparatus in the present embodiment includes: and the focusing barrel 3 is arranged around the movement assembly 100 (preferably, the focusing barrel 3 is coaxially arranged with the movement assembly 100), is connected with the movement assembly 100, and can drive the movement assembly 100 to integrally translate along the optical axis direction I by shifting/rotating the focusing barrel 3, so that the detector 101 is far away from/close to the optical lens 200 in the optical axis direction I, and the focal length of the whole machine is adjusted.
For example, in this embodiment, the focus tube 3 may be detachably connected or fixedly connected to an outer wall surface of the core assembly 100, and further, the focus tube 3 may be shifted in a direction toward the optical lens 200, so as to further drive the core assembly 100 to approach the optical lens 200 integrally along the optical axis direction I; conversely, the focusing barrel 3 is shifted in a direction away from the optical lens 200, so as to drive the entire movement assembly 100 to move away from the optical lens 200 in the optical axis direction I.
For another example, the focus tube 3 is screwed to the outer wall surface of the movement assembly 100 through a screw thread portion 31 provided on the outer wall surface of the movement assembly 100, and by rotating the focus tube 3, the focus tube 3 and the movement assembly 100 relatively rotate, so that the movement assembly 100 is further moved closer to/away from the optical lens 200 along the optical axis direction I.
The lens focusing device in the above embodiments 1 and 2 has a simple structure, requires few components, is light in weight, and can adjust the focal length of the whole lens without adjusting the distance between lenses (such as infrared lenses) of the optical lens 200 by only the translation of the movement assembly 100 in the optical axis direction I, so that lenses with different focal lengths can be flexibly matched for use.
Example 3:
the present embodiment provides an imaging apparatus (e.g., an infrared viewer), as shown in fig. 1, including: a lens barrel 300; an optical lens 200 (which may be a focus lens) mounted in the lens barrel 300; a sighting telescope housing 400 which is coaxially arranged with the lens barrel 300 and detachably connected with the lens barrel 300, and meanwhile, a notch 401 is formed in the sighting telescope housing 400; the movement assembly 100 is located in the whole formed by connecting the lens barrel 300 and the sighting telescope housing 400, and is matched with the cylindrical surface of the sighting telescope housing 400 to reduce optical axis fluctuation in the focusing process; and a lens focusing device having the position adjusting assembly according to embodiment 1, and the focusing knob 2 is detachably connected to an outer wall surface of the scope housing 400.
Wherein, the outer wall surface of guide 1 connection core subassembly 100, just guide 1 passes stretch out behind notch 401, and imbeds non-circular arc curve groove 21. Therefore, the guide 1 can drive the whole movement assembly 100 to translate along the optical axis direction I under the dual action of the non-circular arc curved groove 21 and the notch 401, so that the detector 101 is far away from/close to the optical lens 200 in the optical axis direction I to realize the focal length adjustment of the whole machine, meanwhile, the specification of the notch 401 is provided to directly limit the movable distance of the guide 1, and further, the movable distance of the guide 1 can be related to the detector 101 and the focal length to realize the accurate adjustment of the focal length.
Example 4:
the present embodiment provides an imaging apparatus (e.g., an infrared viewer), as shown in fig. 3, including: a lens barrel 300; an optical lens 200 (which may be a focus lens) mounted in the lens barrel 300; a scope housing 400 coaxially disposed with the lens barrel 300 and detachably connected to the lens barrel 300, and the scope housing 400 has an opening 402; the movement assembly 100 is located in the whole formed by connecting the lens barrel 300 and the sighting telescope housing 400, and is matched with the cylindrical surface of the sighting telescope housing 400 to reduce optical axis fluctuation in the focusing process; and a lens focusing apparatus having the position adjusting assembly described in embodiment 2.
The focusing barrel 3 is disposed around the outer wall surface of the scope housing 400, and is connected to the movement assembly 100 through the opening 402 (preferably, the focusing barrel 3, the movement assembly 100, and the focusing barrel 3 are coaxially disposed).
For example, in this embodiment, the focus tube 3 may be detachably connected or fixedly connected to the outer wall surface of the movement assembly 100 through a connector passing through the opening 402, and further, the focus tube 3 may be moved along a direction toward/away from the optical lens 200, and the connector may move freely in the opening 402, so as to further drive the movement assembly 100 to move closer to/away from the optical lens 200 along the optical axis direction I.
For another example, the focus tube 3 is screwed to the outer wall surface of the movement assembly 100 through a screw thread portion 31 that passes through the opening 402 and is disposed on the outer wall surface of the movement assembly 100, and by rotating the focus tube 3, the focus tube 3 and the movement assembly 100 are relatively rotated, and the screw thread portion 31 can freely move in the opening 402, so that the movement assembly 100 is further moved closer to/farther from the optical lens 200 in the optical axis direction I.
Example 5:
this embodiment provides an imaging apparatus (e.g., an infrared viewer) as shown in fig. 3, which differs from embodiment 4 only in that the imaging apparatus further includes: a positioning column 4 and a guide groove 403 formed in the outer wall surface of the scope housing 400 in the circumferential direction; one end of the positioning column 4 is connected with the inner wall surface of the focusing barrel 3, the other end of the positioning column extends into the guide groove 403, and when the focusing barrel 3 is shifted/rotated, the positioning column 4 translates or rotates in the guide groove 403 correspondingly, so that the position of the focusing barrel 3 can be limited, and accurate adjustment of the focal length can be realized.
To sum up, the lens focusing device of the present invention has a simple structure, requires few parts, is light in weight, and can realize the adjustment of the focal length of the whole lens without adjusting the distance between the lenses (such as infrared lenses) of the optical lens by only the translation of the movement assembly in the optical axis direction, thereby flexibly matching the lenses with different focal lengths; meanwhile, the focusing lens can be matched, so that different focusing requirements are further met.
It should be noted that the technical features of the above embodiments 1 to 5 can be arbitrarily combined, and the technical solutions obtained by combining the technical features belong to the scope of the present application. And in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A lens focusing apparatus, comprising: the position adjusting assembly is movably connected with the movement assembly and is used for driving the movement assembly to integrally translate along the direction of the optical axis; the position adjustment assembly includes: and the focusing barrel is connected with the movement assembly and can drive the movement assembly to integrally translate along the optical axis direction by shifting/rotating the focusing barrel.
2. The lens focusing apparatus of claim 1, wherein the position adjustment assembly comprises: a guide member connected to an outer wall surface of the core assembly; and the focusing knob is provided with a non-circular arc curve groove matched with the guide piece, and when the focusing knob rotates, the guide piece can be driven to move in the non-circular arc curve groove, so that the whole movement assembly is driven to translate along the direction of an optical axis.
3. A lens focusing apparatus according to claim 2, wherein the guide is formed integrally with the movement assembly.
4. A lens focusing apparatus according to claim 2, wherein said non-circular arc curved groove is an involute curved groove.
5. The lens focusing device according to claim 1, wherein the focus barrel is screwed to the outer wall surface of the movement assembly by a screw portion provided to the outer wall surface of the movement assembly.
6. An image forming apparatus, characterized by comprising: a lens barrel; an optical lens mounted in the lens barrel; the lens barrel is connected with the sighting telescope shell, and a notch is formed in the sighting telescope shell; the movement assembly is positioned in the whole formed by connecting the lens barrel and the sighting telescope shell; a lens focusing apparatus as claimed in claim 2, wherein the focusing knob is connected to an outer wall surface of the scope housing, and the guide member extends through the slot opening and engages the non-circular-arc curved slot.
7. An image forming apparatus, characterized by comprising: a lens barrel; an optical lens mounted in the lens barrel; the sighting telescope shell is connected with the lens barrel, and an opening is formed in the sighting telescope shell; the movement assembly is positioned in the whole formed by connecting the lens barrel and the sighting telescope shell; and a lens focusing apparatus as claimed in claim 1 or 5; the focusing barrel is arranged around the outer wall surface of the sighting telescope shell and is connected with the movement assembly through the opening.
8. The imaging apparatus of claim 7, further comprising: the positioning column and a guide groove are formed in the outer wall surface of the sighting telescope shell along the circumferential direction; one end of the positioning column is connected with the inner wall surface of the focusing barrel, the other end of the positioning column extends into the guide groove, and when the focusing barrel is shifted/rotated, the positioning column correspondingly translates or rotates in the guide groove.
9. An imaging device according to claim 7 or 8, wherein the optical lens is a variable focus lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020106838.XU CN212207933U (en) | 2020-01-17 | 2020-01-17 | Lens focusing device and imaging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020106838.XU CN212207933U (en) | 2020-01-17 | 2020-01-17 | Lens focusing device and imaging equipment |
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| Publication Number | Publication Date |
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| CN212207933U true CN212207933U (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020106838.XU Active CN212207933U (en) | 2020-01-17 | 2020-01-17 | Lens focusing device and imaging equipment |
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| CN (1) | CN212207933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884191A (en) * | 2021-09-27 | 2022-01-04 | 武汉高德智感科技有限公司 | Infrared detector and infrared imaging device |
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2020
- 2020-01-17 CN CN202020106838.XU patent/CN212207933U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884191A (en) * | 2021-09-27 | 2022-01-04 | 武汉高德智感科技有限公司 | Infrared detector and infrared imaging device |
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