CN212846097U - Large-light-transmission large-image-surface manual focusing lens - Google Patents
Large-light-transmission large-image-surface manual focusing lens Download PDFInfo
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- CN212846097U CN212846097U CN202021911125.7U CN202021911125U CN212846097U CN 212846097 U CN212846097 U CN 212846097U CN 202021911125 U CN202021911125 U CN 202021911125U CN 212846097 U CN212846097 U CN 212846097U
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Abstract
The utility model discloses a big image plane manual focusing lens of light that leads to greatly, it includes main section of thick bamboo, the picture frame, the lens group, clamping ring and diaphragm, the picture frame is installed in main section of thick bamboo, lens group and diaphragm are installed in the picture frame, the tip of picture frame is located to the clamping ring, a set of lens for pushing down, still include focusing mechanism and diaphragm adjustment mechanism, the picture frame includes preceding picture frame and back picture frame, preceding picture frame holding is in the front end of main section of thick bamboo, the transmission is connected between focusing mechanism and the preceding picture frame, a back picture frame holding is done the axial back-and-forth movement for making the relative main section of thick bamboo of preceding picture frame, back picture frame holding is in the rear end of main section of thick bamboo, the lens group includes preceding lens group and back lens group, preceding lens group installs in preceding picture frame, back lens group installs. The utility model discloses reduce the equipment degree of difficulty of lens, and then improved the production yield of lens equipment, simultaneously for the camera lens can accurate formation of image, solves the inconvenient problem that leads to the camera lens definition not high of focusing that exists of current ITS camera lens.
Description
Technical Field
The utility model relates to a camera lens technical field, concretely relates to big image planes manual focus camera lens of big light transmission.
Background
In an intelligent traffic system, the performance of an imaging lens is very important, the reliability of the whole system is influenced, and an ITS lens is widely applied due to the main characteristics of high pixels, large aperture, large target surface, super-night vision and the like. The existing ITS lens adopts a fixed lens group (the lens group comprises a plurality of lenses) or a built-in focusing structure, and for the ITS lens with the structure, the assembly difficulty of the lens is higher, the production yield of lens assembly is lower, and the problem of low definition of the lens caused by inconvenient focusing exists.
In addition, the current focusing lens applied to the intelligent transportation system is generally small in image surface and light passing, light entering brightness is low in a low-light environment, a shot image is dark, and shooting requirements of the intelligent transportation system in the low-light environment cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a big image planes manual focus camera lens of passing through light, it not only can improve the production yield of lens equipment, can solve the inconvenient problem that leads to the camera lens definition not high of focusing moreover.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a large-light-transmission large-image-surface manual focusing lens comprises a main cylinder, a lens frame, a lens group, a pressing ring and a diaphragm, wherein the lens frame is arranged in the main cylinder, the lens group and the diaphragm are arranged in the lens frame, lenses of the lens group are mutually separated and supported inside the lens frame, the pressing ring is arranged at the end part of the lens frame and used for pressing the lens group, the large-light-transmission large-image-surface manual focusing lens further comprises a focusing mechanism and a diaphragm adjusting mechanism which are respectively arranged on the main cylinder, the lens frame comprises a front lens frame and a rear lens frame, the front lens frame is accommodated at the front end of the main cylinder, the focusing mechanism is in transmission connection with the front lens frame and used for enabling the front lens frame to axially move back and forth relative to the main cylinder to realize focusing, the rear lens frame is accommodated at the rear end of the main cylinder, the lens group comprises a front lens group and a rear lens group, the front, the back lens group is installed in the back mirror frame, the diaphragm is located between the front lens group and the back lens group, and the diaphragm adjusting mechanism is used for adjusting the size of the diaphragm light through hole.
Preferably, focus mechanism includes preceding facing, preceding adjustable ring and preceding binding nail, preceding facing includes external interface circle and internal interface circle, external interface circle and main section of thick bamboo looks spiro union, internal interface circle and preceding picture frame looks spiro union, preceding adjustable ring cover is located the front end of a main section of thick bamboo, and with preceding facing looks rigid coupling, preceding binding nail spiro union in on the main section of thick bamboo, be used for the restriction preceding facing rotates.
Preferably, diaphragm adjustment mechanism includes postadjustment ring, diaphragm drive nail and back fastening nail, postadjustment ring rotationally overlaps and locates the rear end of a main section of thick bamboo, a main section of thick bamboo in be equipped with the diaphragm on the position that the diaphragm corresponds and adjust the mouth, the diaphragm drive nail spiro union in on the postadjustment ring, and its one end passes behind the diaphragm regulation mouth with the diaphragm is connected, the back fastening nail spiro union in on the main section of thick bamboo for the restriction postadjustment ring rotates.
Preferably, the lens group includes first to tenth lens elements disposed in order along an optical axis from an object side to an image side, and each of the first to tenth lens elements includes an object side surface facing the object side and allowing the imaging light to pass therethrough and an image side surface facing the image side and allowing the imaging light to pass therethrough;
the first lens element with positive refractive index has a convex object-side surface and a convex image-side surface;
the second lens element with positive refractive index has a convex object-side surface and a convex image-side surface;
the third lens element with negative refractive index has a concave object-side surface and a concave image-side surface;
the fourth lens element with positive refractive index has a planar object-side surface and a convex image-side surface;
the fifth lens element with negative refractive index has a concave object-side surface and a concave image-side surface;
the sixth lens element with positive refractive index has a convex object-side surface and a convex image-side surface;
the seventh lens element with negative refractive index has a concave object-side surface and a convex image-side surface;
the eighth lens element with positive refractive index has a convex object-side surface and a concave image-side surface;
the ninth lens element with positive refractive index has a convex object-side surface and a convex image-side surface;
the tenth lens element with negative refractive index has a concave object-side surface and a convex image-side surface;
the image side surface of the second lens is mutually cemented with the object side surface of the third lens, the image side surface of the fourth lens is mutually cemented with the object side surface of the fifth lens, the image side surface of the sixth lens is mutually cemented with the object side surface of the seventh lens, the image side surface of the eighth lens is mutually cemented with the object side surface of the ninth lens, and the diaphragm is arranged between the seventh lens and the eighth lens.
Preferably, the front lens group includes first to seventh lenses, the first, second and third lenses, the fourth and fifth lenses, the sixth and seventh lenses are separated from each other by a spacer ring in sequence and are supported in the front frame, the pressing ring includes a front pressing ring, and the first lens is fixed to the front end of the front frame by the front pressing ring.
Preferably, the rear lens group includes eighth to tenth lenses, the rear frame is disposed at the rear end of the front frame, the eighth and ninth lenses are supported between the rear end of the front frame and the front end of the rear frame, the pressing ring further includes a rear pressing ring, and the tenth lens is fixed at the rear end of the rear frame through the rear pressing ring.
Preferably, the glasses frame further comprises a connecting seat, the connecting seat comprises a mounting part and a guide ring, the mounting part is fixedly arranged at the rear end of the main cylinder, the mounting part extends towards one side to form the guide ring, and the tail part of the rear glasses frame is accommodated on the guide ring.
After the technical scheme is adopted, compared with the background art, the utility model, have following advantage:
1. the utility model discloses in preceding picture frame and back picture frame holding respectively both ends around the main section of thick bamboo, constitute a camera lens wholly with the main section of thick bamboo, the lens group is installed respectively in preceding picture frame and back picture frame, the equipment degree of difficulty of lens has been reduced, and then the production yield of lens equipment has been improved, and simultaneously, make the relative main section of thick bamboo of picture frame make the axial back-and-forth movement in order to realize the focus through focusing mechanism, adjust the size of diaphragm clear opening through diaphragm adjustment mechanism, make the camera lens can accurate formation of image, solve the inconvenient problem that leads to the camera lens definition not high of focusing that exists of current ITS camera lens.
2. The utility model discloses a ten lens to through the range design to the refractive index of each lens and face type, make the camera lens have that image planes are big, logical light is big, can obtain more light inlet quantity, the picture is brighter, ensures the result of use of camera lens under the low environment of shining.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a lens assembly;
fig. 3 is a light path diagram of the present invention.
Description of reference numerals:
a main cylinder 100;
a front frame 210 and a rear frame 220;
a first lens 311, a second lens 312, a third lens 313, a fourth lens 314, a fifth lens 315, a sixth lens 316, a seventh lens 317, an eighth lens 321, a ninth lens 322, and a tenth lens 323;
a front clamping ring 410, a rear clamping ring 420;
an aperture 500;
a mounting portion 610, a guide ring 620;
the front tooth socket 710, the front adjusting ring 720 and the front fastening nail 730;
rear adjusting ring 810, diaphragm driving nail 820 and rear fastening nail 830.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or position relationship shown in the drawings, and are only for convenience of description and simplification of the present invention, but do not indicate or imply that the device or element of the present invention must have a specific orientation, and thus, should not be construed as limiting the present invention.
Examples
Referring to fig. 1, the utility model discloses a big image plane manual focus camera lens of big light-passing, including a main section of thick bamboo 100, picture frame, lens group, clamping ring and diaphragm 500, the picture frame is installed in a main section of thick bamboo 100, and lens group and diaphragm 500 are installed in the picture frame, and inside the picture frame, separate mutually between each lens of lens group and hold and lean on, the tip of picture frame is located to the clamping ring for push down the lens group, still including setting up connecting seat, focus mechanism and the diaphragm adjustment mechanism on a main section of thick bamboo 100 respectively.
The frame includes preceding frame 210 and back frame 220, preceding frame 210 holds in the front end of a main section of thick bamboo 100, the transmission is connected between focus mechanism and the preceding frame 210, be used for making preceding frame 210 do the axial back-and-forth movement in order to realize the focus relative a main section of thick bamboo 100, back frame 220 holds in the rear end of a main section of thick bamboo 100, in this embodiment, the connecting seat includes installation department 610 and guide ring 620, installation department 610 sets firmly in the rear end of a main section of thick bamboo 100, installation department 610 extends to one side and forms guide ring 620, the afterbody holding of back frame 220 is on guide ring 620. The lens group includes a front lens group installed in the front frame 210 and a rear lens group installed in the rear frame 220.
The focusing mechanism comprises a front tooth socket 710, a front adjusting ring 720 and a front fastening nail 730, the front tooth socket 710 comprises an outer interface ring and an inner interface ring, the outer interface ring is in threaded connection with the main cylinder 100, the inner interface ring is in threaded connection with the front lens frame 210, the front adjusting ring 720 is sleeved at the front end of the main cylinder 100 and is fixedly connected with the front tooth socket 710, and the front fastening nail 730 is in threaded connection with the main cylinder 100 and is used for limiting the rotation of the front tooth socket 710. When needing to focus, adjust ring 720 before loosening preceding pin 730 post-rotation, preceding adjust ring 720 rotates and drives preceding facing 710 to make the screw thread of preceding picture frame 210 with preceding facing 710 looks spiro union degree of depth change soon, and then realize the optical focusing of camera lens, after the camera lens focus is accomplished, preceding pin 730 screws.
The diaphragm 500 is arranged between the front lens group and the rear lens group, and the diaphragm adjusting mechanism is used for adjusting the size of the light through hole of the diaphragm 500. The diaphragm adjusting mechanism includes a rear adjusting ring 810, a diaphragm driving nail 820 and a rear fastening nail 830, the rear adjusting ring 810 is rotatably sleeved at the rear end of the main barrel 100, the main barrel 100 is provided with a diaphragm adjusting opening (not shown in the figure) at a position corresponding to the diaphragm 500, the diaphragm driving nail 820 is screwed on the rear adjusting ring 810, one end of the diaphragm driving nail passes through the diaphragm adjusting opening and then is connected with the diaphragm 500, and the rear fastening nail 830 is screwed on the main barrel 100 and used for limiting the rotation of the rear adjusting ring 810. After the rear fastening nail 830 is loosened, the size of the light passing hole of the diaphragm 500 can be changed by rotating the rear adjusting ring 810 to make the diaphragm driving nail 820 drive the diaphragm 500, in this embodiment, the diaphragm 500 is an iris diaphragm, which can be a conventional diaphragm on the market at present, and therefore the specific structure thereof is not described in detail.
In the present specification, the term "a lens element having a positive refractive index (or a negative refractive index)" means that the paraxial refractive index of the lens element calculated by the gauss theory is positive (or negative). The term "object-side (or image-side) of a lens" is defined as the specific range of imaging light rays passing through the lens surface. The determination of the surface shape of the lens can be performed by the judgment method of a person skilled in the art, i.e., by the sign of the curvature radius (abbreviated as R value). The R value may be commonly used in optical design software, such as Zemax or CodeV. The R value is also commonly found in lens data sheets (lens sheets) of optical design software. When the R value is positive, the object side is judged to be a convex surface; and when the R value is negative, judging that the object side surface is a concave surface. On the contrary, regarding the image side surface, when the R value is positive, the image side surface is judged to be a concave surface; when the R value is negative, the image side surface is judged to be convex.
With reference to fig. 1 to 3, the lens assembly includes first to tenth lens elements 311 to 323 disposed along an optical axis from an object side to an image side in sequence, each of the first to tenth lens elements 311 to 323 includes an object side surface facing the object side and passing the imaging light and an image side surface facing the image side and passing the imaging light;
the first lens element 311 with positive refractive index has a convex object-side surface and a convex image-side surface;
the second lens element 312 with positive refractive index has a convex object-side surface and a convex image-side surface;
the third lens element 313 with negative refractive index has a concave object-side surface and a concave image-side surface;
the fourth lens element 314 with positive refractive index has a planar object-side surface and a convex image-side surface;
the fifth lens element 315 with negative refractive index has a concave object-side surface and a concave image-side surface;
the sixth lens element 316 with positive refractive index has a convex object-side surface and a convex image-side surface;
the seventh lens element 317 with negative refractive index has a concave object-side surface and a convex image-side surface;
the eighth lens element 321 with positive refractive index has a convex object-side surface and a concave image-side surface;
the ninth lens element 322 with positive refractive power has a convex object-side surface and a convex image-side surface;
the tenth lens element 323 with negative refractive index has a concave object-side surface and a convex image-side surface;
the image-side surface of the second lens element 312 is cemented with the object-side surface of the third lens element 313, the image-side surface of the fourth lens element 314 is cemented with the object-side surface of the fifth lens element 315, the image-side surface of the sixth lens element 316 is cemented with the object-side surface of the seventh lens element 317, the image-side surface of the eighth lens element 321 is cemented with the object-side surface of the ninth lens element 322, and the diaphragm 500 is disposed between the seventh lens element 317 and the eighth lens element 321.
The front lens group comprises a first lens 311 to a seventh lens 317, the first lens 311, the second lens 312, the third lens 313, the fourth lens 314, the fifth lens 315, the sixth lens 316 and the seventh lens 317 are supported in the front frame 210 in a mutually spaced manner through spacers, the pressing ring comprises a front pressing ring 410, and the first lens 311 is fixed at the front end of the front frame 210 through the front pressing ring 410.
The rear lens group includes eighth lens 321 to tenth lens 323, the rear frame 220 is disposed at the rear end of the front frame 210, the eighth lens 321 and the ninth lens 322 are supported between the rear end of the front frame 210 and the front end of the rear frame 220, the pressing ring further includes a rear pressing ring 420, and the tenth lens 323 is fixed at the rear end of the rear frame 220 through the rear pressing ring 420.
The combination of the first lens 311 to the seventh lens 317 of the front lens group guides as much light reflected by the object plane as possible through the diaphragm 500, thereby realizing large light transmission. After the light reaches the rear lens group, the eighth lens element 321 and the ninth lens element 322 are cemented together to form a positive focal length, which focuses the light passing through the front lens group to correct various aberrations.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a big image plane manual focusing lens of big light-passing, includes main section of thick bamboo, picture frame, lens group, clamping ring and diaphragm, the picture frame install in the main section of thick bamboo, lens group and diaphragm install in the picture frame inside the picture frame, separate mutually between each lens of lens group and hold and lean on, the clamping ring is located the tip of picture frame is used for pushing down the lens group, its characterized in that: the lens group comprises a front lens group and a rear lens group, the front lens group is installed in the front lens frame, the rear lens group is installed in the rear lens frame, the diaphragm is located between the front lens group and the rear lens group, and the diaphragm adjusting mechanism is used for adjusting the size of the diaphragm light-passing hole.
2. The large-light-transmission large-image-plane manual focusing lens of claim 1, wherein: the focusing mechanism comprises a front tooth socket, a front adjusting ring and a front fastening nail, the front tooth socket comprises an outer opening ring and an inner opening ring, the outer opening ring is in threaded connection with a main cylinder, the inner opening ring is in threaded connection with a front mirror frame, the front adjusting ring is sleeved at the front end of the main cylinder and is fixedly connected with the front tooth socket, and the front fastening nail is in threaded connection with the main cylinder and is used for limiting the rotation of the front tooth socket.
3. The large-light-transmission large-image-plane manual focusing lens of claim 1, wherein: the diaphragm adjustment mechanism includes the postero-adjustment ring, the diaphragm drives nail and back fastening nail, the postero-adjustment ring rotationally overlaps and locates the rear end of a main section of thick bamboo, a main section of thick bamboo in be equipped with the diaphragm on the position that the diaphragm corresponds and adjust the mouth, the diaphragm drive the screw spiro union in on the postero-adjustment ring, and its one end passes behind the diaphragm regulation mouth with the diaphragm is connected, the back fastening screw spiro union in on the main section of thick bamboo, be used for the restriction the rotation of postero-adjustment ring.
4. The large-pass large-image-plane manual focusing lens of any one of claims 1 to 3, wherein: the lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the first lens, the second lens and the third lens are sequentially arranged from the object side to the image side along an optical axis;
the first lens element with positive refractive index has a convex object-side surface and a convex image-side surface;
the second lens element with positive refractive index has a convex object-side surface and a convex image-side surface;
the third lens element with negative refractive index has a concave object-side surface and a concave image-side surface;
the fourth lens element with positive refractive index has a planar object-side surface and a convex image-side surface;
the fifth lens element with negative refractive index has a concave object-side surface and a concave image-side surface;
the sixth lens element with positive refractive index has a convex object-side surface and a convex image-side surface;
the seventh lens element with negative refractive index has a concave object-side surface and a convex image-side surface;
the eighth lens element with positive refractive index has a convex object-side surface and a concave image-side surface;
the ninth lens element with positive refractive index has a convex object-side surface and a convex image-side surface;
the tenth lens element with negative refractive index has a concave object-side surface and a convex image-side surface;
the image side surface of the second lens is mutually cemented with the object side surface of the third lens, the image side surface of the fourth lens is mutually cemented with the object side surface of the fifth lens, the image side surface of the sixth lens is mutually cemented with the object side surface of the seventh lens, the image side surface of the eighth lens is mutually cemented with the object side surface of the ninth lens, and the diaphragm is arranged between the seventh lens and the eighth lens.
5. The large-light-transmission large-image-plane manual focusing lens of claim 4, wherein: the front lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are separated from each other through a space ring in sequence and lean against the front lens frame, the pressing ring comprises a front pressing ring, and the first lens is fixed at the front end of the front lens frame through the front pressing ring.
6. The large-light-transmission large-image-plane manual focusing lens of claim 5, wherein: the back lens group includes eighth lens to tenth lens, the back picture frame is located the rear end of preceding picture frame, eighth lens and ninth lens hold lean on in the rear end of preceding picture frame with between the front end of back picture frame, the clamping ring still includes back clamping ring, tenth lens passes through back clamping ring is fixed in the rear end of back picture frame.
7. The large-light-transmission large-image-plane manual focusing lens of claim 6, wherein: the connecting seat comprises an installation part and a guide ring, the installation part is fixedly arranged at the rear end of the main cylinder, the installation part extends towards one side to form the guide ring, and the tail part of the rear mirror frame is accommodated on the guide ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021911125.7U CN212846097U (en) | 2020-09-04 | 2020-09-04 | Large-light-transmission large-image-surface manual focusing lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021911125.7U CN212846097U (en) | 2020-09-04 | 2020-09-04 | Large-light-transmission large-image-surface manual focusing lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212846097U true CN212846097U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021911125.7U Active CN212846097U (en) | 2020-09-04 | 2020-09-04 | Large-light-transmission large-image-surface manual focusing lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212846097U (en) |
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- 2020-09-04 CN CN202021911125.7U patent/CN212846097U/en active Active
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