CN218886275U - 4K high-definition internal focusing objective lens - Google Patents
4K high-definition internal focusing objective lens Download PDFInfo
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- CN218886275U CN218886275U CN202223333887.5U CN202223333887U CN218886275U CN 218886275 U CN218886275 U CN 218886275U CN 202223333887 U CN202223333887 U CN 202223333887U CN 218886275 U CN218886275 U CN 218886275U
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Abstract
The utility model discloses a focus objective lens in 4K high definition, including objective lens barrel, objective lens L1, objective lens two L2, objective lens three L3, objective lens four L4, five L5 of objective lens and six L6 of objective lens, wherein objective lens one L1 and two L2 glues together and form veneer lens group L10, objective lens three L3, objective lens four L4, five L5 of objective lens and six L6 of objective lens follow optical axis S interval arrangement in proper order to the imaging surface and install in objective lens barrel, distance BFL between six L6 of objective lens and the imaging surface is unchangeable and through the left-right removal realization function of objective lens four L4 along optical axis S inside the objective lens barrel, it adopts 6 objective lens varifocal plates, promote the quality of formation of image, can obtain 4K high definition imaging quality, make the rifle aim at the system in can obtain the high definition picture; the back focal length BFL is kept unchanged during focusing, the zooming function from 5 meters to infinity is realized only by the left-right movement of the four L4 objective lenses along the optical axis S, the adaptability is stronger, and the focusing lens can be used in wide occasions.
Description
Technical Field
The utility model relates to a focus objective lens in 4K high definition, this focus objective lens mainly use in the system is aimed at to the rifle in 4K high definition.
Background
At present, the system is aimed at to rifle on market includes lens cone, eyepiece, objective and is equipped with the prism combination between eyepiece and objective, the prism combination comprises roof prism, half pentaprism, isosceles prism and beam splitting membrane, sees that the patent number is: CN201120225388, the utility model patent of name rifle sight. An objective lens assembly in the gun aiming system usually adopts a combined structure of 3-4 objective lenses, and an image quality product below 2K is obtained, so that the gun aiming system cannot obtain a high-definition picture above 2K, and with the development of an image SENSOR SENSOR, the resolution of the objective lens assembly is higher and higher, and the objective lens assembly with the image quality below 2K obviously does not meet the requirements. In addition, when zooming, the objective lens assembly (including all objective lenses) needs to be moved integrally along the optical axis, which causes the back focal length BFL (i.e. the distance between the image plane and the nearest objective lens) to change, and some gun aiming systems which keep the back focal length BFL unchanged cannot be installed and applied.
Disclosure of Invention
The utility model aims at providing a focusing objective lens camera lens in 4K high definition solves the integrated configuration of the thing lens that the objective lens subassembly among the prior art adopted 3-4 pieces usually, and the image quality product below the 2K that obtains can not satisfy the high definition requirement, and arouses back focus BFL's change when focusing and lead to the inapplicable technical problem of some occasion installations.
The technical scheme of the utility model is realized like this:
the utility model provides a focus objective lens in 4K high definition which characterized in that: the zoom lens comprises an object lens barrel, a first objective lens L1, a second objective lens L2, a third objective lens L3, a fourth objective lens L4, a fifth objective lens L5 and a sixth objective lens L6, wherein the first objective lens L1 and the second objective lens L2 are glued together to form a glued lens group L10, the third objective lens L3, the fourth objective lens L4, the fifth objective lens L5 and the sixth objective lens L6 are sequentially arranged from an object side to an imaging surface at intervals along an optical axis S and are installed in the object lens barrel, the distance BFL between the sixth objective lens L6 and the imaging surface is unchanged, and the zoom function from 5 meters to infinity is realized through the left-right movement of the fourth objective lens L4 in the object lens barrel along the optical axis S.
The first objective lens L1 is a positive lens, the second objective lens L2 is a negative lens, the third objective lens L3 is a positive lens, the fourth objective lens L4 is a negative lens, the fifth objective lens L5 is a positive lens, and the sixth objective lens L6 is a negative lens.
The four L4 of the objective lens is arranged in a lens barrel seat, the lens barrel seat is sleeved in a barrel cavity of an objective lens barrel and can move left and right along the inner wall surface of the barrel cavity, a sliding groove is formed in the side wall of the middle part of the objective lens barrel, the outer surface of the lens barrel seat is in threaded connection with the bottom of a screw, the middle section of the screw is embedded in the sliding groove, the top of the screw is embedded into a through hole formed in a focusing barrel, the focusing barrel is sleeved outside the middle part of the objective lens barrel, an adjusting barrel is arranged on one side of the focusing barrel and also sleeved outside the objective lens barrel, one end of the adjusting barrel is in threaded connection with one end of the focusing barrel, the adjusting barrel is rotated to drive the focusing barrel to move back and forth along the surface of the objective lens barrel, the focusing barrel pulls the screw to slide left and right in the sliding groove of the objective lens barrel, and the left and right movement of the lens barrel seat and the four L4 along an optical axis S are realized.
The outer surface of the objective lens barrel is also provided with mounting threads, so that the objective lens barrel is convenient to connect with external parts.
The focal length of the objective lens is in the range of 45mm-55 mm.
Compared with the prior art, the utility model, there is following advantage:
1. the utility model adopts 6 lenses such as the first objective lens L1, the second objective lens L2, the third objective lens L3, the fourth objective lens L4, the fifth objective lens L5, the sixth objective lens L6 and the like to improve the imaging quality and obtain 4K high-definition imaging quality, so that a gun aiming system can obtain high-definition pictures; in addition, the back focal length BFL is kept unchanged during focusing, the zooming function from 5 meters to infinity is realized only by moving the four L4 objectives in the objective lens barrel left and right along the optical axis S, the external size of the product is fixed, the adaptability is stronger, and the lens can be used in wider occasions.
2. Other advantages of the present invention are described in detail in the examples section of this specification.
Drawings
Fig. 1 is an optical schematic diagram of the present invention;
fig. 2 is a perspective view of the present invention;
fig. 3 is a structural sectional view of the present invention in a state before focusing;
fig. 4 is a structural sectional view of the focused state of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
The first embodiment is as follows:
as shown in fig. 1 to 4, the present embodiment provides a 4K high-definition inner-focusing objective lens, including an objective lens barrel 1, a first objective lens L1, a second objective lens L2, a third objective lens L3, a fourth objective lens L4, a fifth objective lens L5, and a sixth objective lens L6, wherein the first objective lens L1 and the second objective lens L2 are glued together to form a cemented lens group L10, the third objective lens L3, the fourth objective lens L4, the fifth objective lens L5, and the sixth objective lens L6 are sequentially arranged along an optical axis S from an object side to an image plane at intervals and are installed in the objective lens barrel 1, a back focal length BFL between the sixth objective lens L6 and the image plane is not changed, and a zoom function from 5 meters to infinity is realized by left-right movement of the fourth objective lens L4 in the objective lens barrel 1 along the optical axis S.
The utility model adopts 6 pieces of lenses such as the first objective lens L1, the second objective lens L2, the third objective lens L3, the fourth objective lens L4, the fifth objective lens L5, the sixth objective lens L6 and the like, so as to improve the imaging quality and obtain 4K high-definition imaging quality, and the gun aiming system can obtain high-definition pictures; in addition, the back focal length BFL is kept unchanged during focusing, the zooming function is realized only by the left-right movement of the objective lens four L4 in the objective lens barrel along the optical axis S, the adaptability is stronger, and the focusing lens can be used in wider occasions.
The first objective lens L1 is a positive lens, the second objective lens L2 is a negative lens, the third objective lens L3 is a positive lens, the fourth objective lens L4 is a negative lens, the fifth objective lens L5 is a positive lens, and the sixth objective lens L6 is a negative lens.
The four L4 of the objective lens is arranged in a lens barrel seat 2, the lens barrel seat 2 is sleeved in a barrel cavity 11 of an objective lens barrel 1 and can move left and right along the inner wall surface of the barrel cavity 11, a sliding groove 12 is formed in the side wall of the middle part of the objective lens barrel 1, the outer surface of the lens barrel seat 2 is in threaded connection with the bottom of a screw 3, the middle section of the screw 3 is embedded in the sliding groove 12, the top of the screw 3 is embedded in a through hole 41 formed in a focusing barrel 4, the focusing barrel 4 is sleeved outside the middle part of the objective lens barrel 1, an adjusting barrel 5 is arranged on one side of the focusing barrel 4, the adjusting barrel 5 is also sleeved outside the objective lens barrel 1, one end of the adjusting barrel 5 is in threaded connection with one end of the focusing barrel 4, the adjusting barrel 5 is rotated to drive the focusing barrel 4 to move back and forth along the surface of the objective lens barrel 1, the focusing barrel 4 pulls the screw 3 to slide left in the sliding groove 12 of the objective lens barrel 1, and the left and right movement of the lens barrel seat 2 and the objective lens four L4 along an optical axis S is realized. The left and right sides of the slide groove 12 limit the movement of the screw 3. Simple structure and convenient adjustment. Fig. 3 shows that the objective lens focusing is in an infinite state, the screw 3 is located at the left side position inside the sliding groove 12 of the objective lens barrel 1, the adjusting barrel 5 is rotated to drive the focusing barrel 4 to move along the surface of the objective lens barrel 1, fig. 4 shows that the objective lens focusing is in a 5m state, and the screw 3 is located at the right side inside the sliding groove 12 of the objective lens barrel 1.
The outer surface of the objective lens barrel 1 is also provided with mounting threads 13, which is convenient for the objective lens barrel 1 to be mounted with other external parts.
The focal length of the objective lens is in the range of 45mm-55 mm.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (5)
1. The utility model provides a focus objective lens in 4K high definition which characterized in that: the zoom lens comprises an objective lens barrel (1), a first objective lens L1, a second objective lens L2, a third objective lens L3, a fourth objective lens L4, a fifth objective lens L5 and a sixth objective lens L6, wherein the first objective lens L1 and the second objective lens L2 are glued together to form a glued lens group L10, the third objective lens L3, the fourth objective lens L4, the fifth objective lens L5 and the sixth objective lens L6 are sequentially arranged along an optical axis S from an object side to an imaging surface at intervals and are installed in the objective lens barrel (1), a back focal length BFL between the sixth objective lens L6 and the imaging surface is unchanged, and the zoom function from 5 meters to infinity is achieved through the fact that the fourth objective lens L4 in the objective lens barrel (1) moves left and right along the optical axis S.
2. The 4K high-definition internal focusing objective lens according to claim 1, characterized in that: objective lens one L1 is a positive lens, objective lens two L2 is a negative lens, objective lens three L3 is a positive lens, objective lens four L4 is a negative lens, objective lens five L5 is a positive lens, and objective lens six L6 is a negative lens.
3. A 4K high definition inner focus objective lens according to claim 1 or 2, characterized in that: the four L4 of the objective lens are arranged in a lens barrel seat (2), the lens barrel seat (2) is sleeved in a barrel cavity (11) of an objective lens barrel (1) and can move left and right along the inner wall surface of the barrel cavity (11), a sliding groove (12) is formed in the side wall of the middle part of the objective lens barrel (1), the outer surface of the lens barrel seat (2) is in threaded connection with the bottom of a screw (3), the middle section of the screw (3) is embedded in the sliding groove (12), the top of the screw (3) is embedded in a through hole (41) formed in a focusing barrel (4), the focusing barrel (4) is sleeved outside the middle part of the objective lens barrel (1), an adjusting barrel (5) is arranged on one side of the focusing barrel (4), the adjusting barrel (5) is also sleeved outside the objective lens barrel (1), one end of the adjusting barrel (5) is in threaded connection with one end of the focusing barrel (4), the focusing barrel (4) is driven to move back and forth along the surface of the objective lens barrel (1) by rotating the adjusting barrel (5), the screw (3) is pulled to move left and right along the sliding groove (12) of the objective lens barrel (2), and the optical axis of the objective lens barrel (4) are achieved.
4. The 4K high definition inner focusing objective lens according to claim 3, characterized in that: the outer surface of the objective lens barrel (1) is also provided with mounting threads (13).
5. The 4K high-definition internal-focusing objective lens according to claim 1 or 2, characterized in that: the focal length of the objective lens is in the range of 45mm-55 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223333887.5U CN218886275U (en) | 2022-12-12 | 2022-12-12 | 4K high-definition internal focusing objective lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223333887.5U CN218886275U (en) | 2022-12-12 | 2022-12-12 | 4K high-definition internal focusing objective lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218886275U true CN218886275U (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223333887.5U Active CN218886275U (en) | 2022-12-12 | 2022-12-12 | 4K high-definition internal focusing objective lens |
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| Country | Link |
|---|---|
| CN (1) | CN218886275U (en) |
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2022
- 2022-12-12 CN CN202223333887.5U patent/CN218886275U/en active Active
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