CN114545596B - F50mm high-definition low-distortion semi-group moving industrial lens structure - Google Patents
F50mm high-definition low-distortion semi-group moving industrial lens structure Download PDFInfo
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- CN114545596B CN114545596B CN202210132710.4A CN202210132710A CN114545596B CN 114545596 B CN114545596 B CN 114545596B CN 202210132710 A CN202210132710 A CN 202210132710A CN 114545596 B CN114545596 B CN 114545596B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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Abstract
The invention relates to an f50mm high-definition low-distortion semi-group moving industrial lens structure, which is characterized in that: the optical system of camera lens includes that along light incidence direction from front to back has set gradually preceding lens group, diaphragm D, back lens group and fixed lens group, preceding lens group comprises the first veneer group of negative meniscus lens A1 and negative meniscus lens A2 close-fitting, the second veneer group of positive focal power's convex flat lens A3 and plano concave lens A4 close-fitting, back lens group comprises biconcave lens B1 and biconvex lens B2 close-fitting third veneer group, biconvex lens B3, fixed lens group comprises negative meniscus lens C1 and biconvex lens C2. The design uses a half group moving mode to realize near-distance high-resolution focusing of 250mm, thereby reaching 2000 ten thousand pixels, and the MTF value of the lens is more than 0.3 and is in the first-class high-resolution imaging requirement of the industrial lens due to the good correction of the aberration of the lens by the aid of the computer-aided optical design.
Description
Technical field:
the invention relates to an f50mm high-definition low-distortion semi-group moving industrial lens structure.
The background technology is as follows:
in the existing machine vision field, the current industrial lens has a short requirement on object distance, can detect smaller products, but is limited on larger-size products, and the current various product manufacturing has different requirements on lens focal length and the like, so that the industrial lens is realized by utilizing a machine vision technology, is subjected to industrial detection with higher precision, is subjected to industrial manufacturing, and can provide more effective competitiveness for future industrial development.
The invention comprises the following steps:
the invention aims to provide a f50mm high-definition low-distortion semi-group moving industrial lens structure which can realize large target surface imaging and high resolution low distortion.
The technical scheme of the invention is as follows: an f50mm high definition low distortion half group removes industry lens structure, its characterized in that: the optical system of camera lens includes that along light incidence direction from front to back has set gradually preceding lens group, diaphragm D, back lens group and fixed lens group, preceding lens group comprises the first veneer group of negative meniscus lens A1 and negative meniscus lens A2 close-fitting, the second veneer group of positive focal power's convex flat lens A3 and plano concave lens A4 close-fitting, back lens group comprises biconcave lens B1 and biconvex lens B2 close-fitting third veneer group, biconvex lens B3, fixed lens group comprises negative meniscus lens C1 and biconvex lens C2.
Further, the air space between the first bonding group of the negative meniscus lens A1 and the negative meniscus lens A2 of the front group a and the second bonding group of the positive focal power and the positive plano lens A3 and the negative meniscus lens A4 is 0.1mm, the air space between the front group a and the diaphragm D is 4.77, the air space between the diaphragm D and the rear group B is 6mm, the air space between the third bonding group of the biconcave lens B1 and the biconvex lens B2 of the rear group B and the biconvex lens B3 is 0.1mm, the air space between the rear group B and the fixed group C is 1.25mm, and the air space between the negative meniscus lens C1 and the biconvex lens C2 of the fixed group C is 4.52mm.
Further, parameters of each lens described above:
further, the technical indexes realized by the lens optical system are as follows:
(1) focal length: f' =50mm;
(2) close-up: m.o.d=250 mm;
(3) distortion: less than or equal to 0.2 percent;
(4) relative pore size: d/f' =1/2.8;
(5) angle of view: 2ω=20°;
(6) resolution ratio: better than 2000 ten thousand pixels;
(7) total length of light path: sigma is less than or equal to 42.2 plus or minus 0.1mm;
(8) the applicable spectral line range: 450 nm-650 nm;
(9) type of lens interface: C-Mount.
Further, the mechanical structure of the lens comprises a main lens barrel, a front lens barrel with a front cavity for installing a front lens group is arranged in the main lens barrel, a rear lens barrel for installing a rear lens group is arranged at the rear part of an inner hole of the front lens barrel, the rear lens barrel stretches into the rear cavity of the front lens barrel and is fixedly connected with the front lens barrel, a diaphragm D is arranged in the front lens barrel and between the rear cavity of the front lens barrel and the rear lens barrel, a fine focusing mechanism which is matched with the front lens barrel and used for focusing is arranged on the main lens barrel, and a diaphragm adjusting mechanism is also arranged on the main lens barrel.
Further, the fine focusing mechanism comprises a focusing rotating wheel sleeved between the front part of the front group lens cone and the front part of the main lens cone, an inner ring of the focusing rotating wheel is connected with an outer ring of the front group lens cone, an outer ring of the focusing rotating wheel is connected with the main lens cone, a focusing ring positioned on the front side of the main lens cone is sleeved on the front part of the focusing rotating wheel, the focusing ring is fixedly connected with the focusing rotating wheel, a limiting chute is arranged at the rear part of the main lens cone, and a front group lens cone guide pin which is in sliding fit with the limiting chute is arranged at the rear part of the front group lens cone.
Further, an annular concave part for installing a focusing ring is formed between the front end part of the front lens barrel and the main lens barrel in a matched mode, the focusing ring is fixedly connected with the focusing rotating wheel through a cone end set screw, and a locking nail for locking the front lens barrel is radially screwed on the periphery of the main lens barrel.
Further, the diaphragm adjusting mechanism comprises a diaphragm adjusting ring sleeved on the main lens barrel, a diaphragm guide pin is radially connected to the diaphragm adjusting ring, the diaphragm guide pin penetrates through the main lens barrel and the front lens barrel to be connected with the diaphragm D, and movable grooves for avoiding the diaphragm guide pin are formed in the front lens barrel and the rear lens barrel; the diaphragm adjusting ring is also radially and spirally connected with a locking nail for locking the diaphragm adjusting ring, the rear part of the main lens barrel is also sleeved with a connecting seat, and the rear end of the connecting seat is fixedly connected with the main lens barrel through a locking screw arranged in the axial direction; the rear mirror seat of fixed group lens is installed to the connecting seat, the rear mirror seat stretches into inside the connecting seat and with connecting seat screw thread fixed connection.
Further, the front portion of the mounting chamber of the front lens barrel is in threaded connection with a front pressing ring which is in contact with the peripheral portion of the front side of the negative meniscus lens A1, a first spacer ring is arranged between the negative meniscus lens A2 and the convex flat lens A3 with positive focal power in the front lens barrel, the first spacer ring is supported against the flat concave lens A4, and an annular groove for the peripheral portion of the rear lens barrel is arranged in the rear chamber of the front lens barrel.
Further, an annular convex part for abutting against the front peripheral part of the biconcave lens B1 is arranged in the rear cavity of the rear lens barrel, a second space ring is arranged between the biconvex lens B2 and the biconvex lens B3 in the rear lens barrel, the second space ring is supported against the biconcave lens B1, and a rear group pressing ring abutting against the rear peripheral part of the biconvex lens B3 is also in threaded connection with the rear end of the rear lens barrel; the rear cavity of the rear mirror seat is provided with an annular convex part which is used for being abutted against the periphery of the front side of the negative meniscus lens C1, a third space ring is arranged between the negative meniscus lens C1 and the biconvex lens C2 in the rear mirror seat, and the rear end of the rear mirror seat is in threaded connection with a rear pressing ring which is abutted against the periphery of the rear side of the biconvex lens C2.
The optical path structure is shown in fig. 3: the lens comprises 9 lenses, a front group A, a rear group B and a fixed group C are respectively arranged along the incidence direction of light rays from left to right, a diaphragm D is arranged between A, B, and the front group A along the light rays from left to right consists of 2 negative meniscus lenses, 1 convex flat lens with positive focal power and 1 flat concave lens; the rear group B consists of 1 biconcave lens and 2 biconvex lenses; the fixed group C consists of 1 piece of negative meniscus lens and 1 piece of biconvex lens; the optical path movement is designed by using a half group of lens movement, so that the resolution of the lens is up to 2000 ten thousand, and the distortion is less than 0.07%.
The structural design is shown in fig. 4: the design reduces the overall appearance size, the structure adopts a multi-head screw tooth structure, the limit block on the main lens barrel and the limit groove on the focusing ring control the travel, the fit tolerance between the fit components is strictly controlled, the integrated design is beneficial to improving the stability of the lens, improving the core competitiveness of the lens, comparing with the existing lens, better providing the resolution ratio superior to 2000 ten thousand pixels, and guaranteeing the high-definition imaging during shooting.
Description of the drawings:
FIG. 1 is a graph of lens MTF according to an embodiment of the present invention;
FIG. 2 is a graph showing a lens distortion variation according to an embodiment of the present invention;
FIG. 3 is a diagram of a lens optics system according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of an overall structure of a lens barrel according to an embodiment of the present invention;
FIGS. 5, 6 and 7 are views of 3D shots of the embodiment of the invention;
the reference numerals in the figures illustrate: 1-front group lens cone 2-focusing ring 3-focusing ring cone end set screw 4-focusing rotating wheel 5-front group lens cone end set screw 6-main lens cone 7-front group lens cone countersunk head screw 8-diaphragm adjusting ring 9-connecting seat 10-rear lens seat 11-rear press ring 12-biconvex lens C2 13-negative meniscus lens C1 14-biconvex lens B3 15-biconvex lens B2 16-third spacer ring 17-rear group lens cone press ring 18-second spacer ring 19-countersunk head screw 20-biconcave lens B1 21-front group lens cone guide pin 22-locking pin 23-diaphragm guide pin 24-rear group lens cone 25-locking pin 26-front group lens cone end set screw 27-diaphragm D28-flat concave lens A4 29-first spacer ring 30-positive focal power convex flat lens A3-front press ring 32-negative meniscus lens A2-negative meniscus lens A1.
The specific embodiment is as follows:
as shown in fig. 3, an f50mm high-definition low-distortion semi-group moving industrial lens structure comprises an optical system arranged in the lens structure, wherein the optical system comprises a front lens group, a diaphragm D, a rear lens group and a fixed group which are sequentially arranged from front to back along the incidence direction of light rays, the front lens group consists of a first bonding group formed by closely connecting a negative meniscus lens A1 and a negative meniscus lens A2, a second bonding group formed by closely connecting a convex flat lens A3 with positive focal power and a flat concave lens A4, the rear lens group consists of a third bonding group formed by closely connecting a biconcave lens B1 and a biconvex lens B2, and the fixed lens group consists of a negative meniscus lens C1 and a biconvex lens C2.
In this embodiment, the air interval between the first bonding group where the front group a negative meniscus lens A1 and the negative meniscus lens A2 are closely contacted and the second bonding group where the convex flat lens A3 and the concave lens A4 with positive power are closely contacted is 0.1mm.
The air space between the front group a and the diaphragm D is 4.77mm.
The air space between the diaphragm D and the rear group B is 6mm.
The air interval between the third bonding group where the rear group B biconcave lens B1 and the biconvex lens B2 are closely adhered and the biconvex lens B3 is 0.1mm.
The air gap between the rear group B and the fixed group C was 1.25mm.
The air space between the fixed group C negative meniscus lens C1 and the biconvex lens C2 is 4.52mm.
Further, parameters of each lens described above:
the technical indexes of the lens optical system are as follows:
(1) focal length: f' =50mm
(2) Close-up: m.o.d=250 mm
(3) Distortion: less than or equal to 0.2 percent
(4) Relative pore size: d/f' =1/2.8
(5) Angle of view: 2ω=20°
(6) Resolution ratio: better than 2000 ten thousand pixels
(7) Total length of light path: sigma is less than or equal to 42.2 plus or minus 0.1mm
(8) The applicable spectral line range: 450 nm-650 nm
(9) Type of lens interface: C-Mount
The invention has the advantages that:
the design of the lens uses a half group moving mode to realize near-distance high-resolution focusing of 250mm, thereby reaching 2000 ten thousand pixels, and the MTF value of the lens is more than 0.3 (shown in figure 1) and is in the first-class high-resolution imaging requirement of an industrial lens due to the good correction of the aberration of the lens by the aid of a computer-aided optical design.
The clear imaging is realized on a closer object distance, and the distortion is less than or equal to 0.2 percent (as shown in figure 2), thereby meeting the requirement of small distortion of the industrial lens.
In structural design (as shown in fig. 4), the outline dimension of the lens is designed to be phi 39 multiplied by 46.5, the focusing of the lens adopts a mechanism of a multi-head screw tooth structure and a main lens barrel limiting block, the rear end of the lens adopts a diaphragm adjusting mechanism to more conveniently control the opening and closing of the diaphragms, and in order to ensure the air distance between lenses in the whole structural design, a space ring and a pressing ring are used for ensuring, so that the performances of the lens in various aspects such as image quality, distortion and the like are better ensured.
In this embodiment, the front group lens barrel a is designed to hold the front group 4 lenses: 28 (A4), 30 (A3), 32 (A2), 33 (A1), a first spacer ring 29 and a front pressing ring 31, wherein the front group of lens barrels are integrally designed to drive the rear group of lens barrels to move in a half group, so that the coaxiality of the whole light path is ensured; the first spacer ring 29 is designed to ensure the air interval between the first bonding group of the negative meniscus lens A1 and the negative meniscus lens A2 and the second bonding group of the positive focal power convex flat lens A3 and the positive focal power concave lens A4, and the front pressing ring 31 is designed to ensure the stability of assembling 4 lenses, and the middle part of the front lens barrel is beveled to better eliminate the influence of stray light on lens imaging.
In this embodiment, the rear lens assembly 24 is mainly used for placing the rear group of 3 lenses: 14 (B3 sheet), 15 (B2 sheet), 20 (B1 sheet), a second spacer 18 and a rear group barrel clamp 17. The second spacer 18 is provided to ensure the air space between the biconcave lens B1 and the biconvex lens B2, and the air space between the biconcave lens B3 and the third glue group is provided with the EF spacer 16, and the rear group lens barrel pressing ring 17 is matched with the rear group lens barrel 24, so that the assembly of the lens is better ensured, and the loosening of the vibration process is prevented.
In this embodiment, in order to make focusing more convenient and simple, the fine focusing mechanism includes a focusing runner 4 sleeved between the front part of the front group lens barrel and the front part of the main lens barrel, and the focusing runner 4 adopts left-handed multi-head thread to realize focusing function. The inner ring of the focusing rotating wheel 4 is connected with the front group lens barrel 1, and the outer ring of the focusing rotating wheel is connected with the main lens barrel 6, so that the main lens barrel 6 and the front group lens barrel 1 are respectively matched with the positive teeth and the negative teeth of the focusing rotating wheel 4. The front part of the focusing rotary wheel 4 is sleeved with a focusing ring 2 positioned at the front side of the main lens barrel 6, the focusing ring 2 is fixedly connected with the focusing rotary wheel 4, the rear part of the main lens barrel 6 is provided with a limiting chute, the rear part of the rear group lens barrel is provided with 2 rear group lens barrel guide nails 21 which are in sliding fit with the limiting chute, and a rear group lens barrel 24 is locked in the limiting groove of the main lens barrel 6 to control the rear group lens barrel to axially move. When the focusing ring 2 is rotated, the focusing rotating wheel 4 is driven to move together in the same direction, and the main lens barrel 6 and the rear lens barrel 24 which are matched with the positive teeth and the negative teeth of the focusing rotating wheel 4 respectively move in opposite directions.
In this embodiment, in order to enable the front group barrel 1 and the rear group barrel 24 to be interlocked, the front group barrel 1 and the rear group barrel 24 are assembled by screw threads and then locked and fixed by 2 countersunk screws 7.
In this embodiment, in order to control the focusing angle, a groove is designed on the focusing ring 2 to cooperate with a stopper on the main lens barrel 6.
In this embodiment, an annular recess for mounting the focusing ring 2 is formed between the front end of the front lens barrel 1 and the main lens barrel 6, the focusing ring 2 is fixedly connected with the focusing rotating wheel 4 through 3 cone end set screws 3, and a locking nail 25 for locking the rear lens barrel 24 is radially screwed on the front part of the main lens barrel 6.
In this embodiment, in order to implement the aperture adjusting function, the aperture adjusting mechanism includes an aperture adjusting ring 8 sleeved on the main barrel, the aperture adjusting ring is radially connected with an aperture guide pin 23, the aperture guide pin passes through the main barrel 6 and the front barrel 1 to be connected with the aperture D, and movable slots of the aperture D are provided on the front barrel and the rear barrel, so that the front barrel cannot interfere with the aperture D in the sliding process. The main lens barrel 6 is provided with a groove with a certain angle to control the size of the aperture.
In this embodiment, the diaphragm D is set as a manual diaphragm, and a symmetrical locking is adopted, so that the whole diaphragm D, the rear chamber of the front group lens barrel 1 and the rear group lens barrel are integrated with the front group lens barrel, and the rotation angle is controlled by virtue of the limit groove of the main lens barrel 6, so that the opening and closing sizes of diaphragms in different environments are satisfied.
In this embodiment, in order to realize locking of the diaphragm adjusting ring, the diaphragm adjusting ring is further radially screwed with a locking nail 22 for locking the diaphragm adjusting ring, and a section of groove is formed in the rear portion of the main lens barrel 6 for locking the locking nail 22 inside, so that control of the lens diaphragm is better performed. In order to realize the connection between the lens and the camera, the rear part of the main lens barrel is also sleeved with a connecting seat 9, and the rear end of the connecting seat is fixedly connected with the main lens barrel through three countersunk head screws 19 arranged in the axial direction to limit the movement of the main lens barrel 6.
In this embodiment, in order to realize the movement of the half group, the connecting seat 9 is designed to fix with the main lens barrel 6 through 3 countersunk screws 19, so that the movement of the main lens barrel 6 is also limited, the rear lens seat 10 is connected with the connecting seat 9 through threads, so that the lens 12 and the lens 13 are fixed, the limiting groove of the main lens barrel and the focusing mechanism of the focusing rotating wheel are utilized, the left-handed multi-head thread matching transmission is adopted, the multi-head threads drive the front lens barrel and the rear lens barrel to move together, and the movement of the front lens barrel A and the rear lens barrel B is controlled, so that the half-group light path change is realized in the focusing process to achieve the definition of image quality.
In this embodiment, in order to eliminate the influence of stray light on imaging, the front end of the front group barrel 1 is designed to be processed like a step, and the middle end is designed to be processed with a bevel angle. The main purpose of the rear lens holder 10 is to eliminate stray light, and avoid interaction between the lens and a mechanical part with high reflection coefficient, so as to eliminate the influence of the stray light on the lens, and the rear lens holder is better applied to an industrial environment.
Finally, it should be noted that: the above embodiments are only for the technical solution of the present invention and not for limiting it; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (8)
1. An f50mm high definition low distortion half group removes industry lens structure, its characterized in that: the optical system of the lens comprises a front group A, a diaphragm D, a rear group B and a fixed lens group which are sequentially arranged from front to back along the incidence direction of light rays, wherein the front group A consists of a first bonding group formed by closely connecting a negative meniscus lens A1 and a negative meniscus lens A2, a second bonding group formed by closely connecting a convex flat lens A3 and a concave lens A4 with positive focal power, the rear group B consists of a third bonding group formed by closely connecting a biconcave lens B1 and a biconvex lens B2, and a biconvex lens B3, and the fixed lens group consists of a negative meniscus lens C1 and a biconvex lens C2;
the air interval between the first bonding group of the negative meniscus lens A1 and the negative meniscus lens A2 of the front group A and the second bonding group of the positive focal power and the convex flat lens A3 and the flat concave lens A4 of the positive focal power is 0.1mm, the air interval between the front group A and the diaphragm D is 4.77, the air interval between the diaphragm D and the rear group B is 6mm, the air interval between the third bonding group of the biconcave lens B1 and the biconvex lens B2 of the rear group B and the biconvex lens B3 is 0.1mm, the air interval between the rear group B and the fixed group C is 1.25mm, and the air interval between the negative meniscus lens C1 of the fixed group C and the biconvex lens C2 is 4.52mm;
the optical parameters of each lens are shown in the following table:
2. the f50mm high definition low distortion half group shift industrial lens structure of claim 1, wherein:
the technical indexes realized by the lens optical system are as follows:
(1) focal length: f' =50mm;
(2) close-up: m.o.d=250 mm;
(3) distortion: less than or equal to 0.2 percent;
(4) relative pore size: d/f' =1/2.8;
(5) angle of view: 2ω=20°;
(6) resolution ratio: better than 2000 ten thousand pixels;
(7) total length of light path: sigma is less than or equal to 42.2 plus or minus 0.1mm;
(8) the applicable spectral line range: 450 nm-650 nm;
(9) type of lens interface: C-Mount.
3. The f50mm high definition low distortion half group shift industrial lens structure of claim 2, wherein: the mechanical structure of the lens comprises a main lens barrel, a front chamber is arranged in the main lens barrel and used for installing a front lens barrel of a front group A, a rear lens barrel used for installing a rear group B is arranged at the rear part of an inner hole of the front lens barrel, the rear lens barrel stretches into the rear chamber of the front lens barrel and is fixedly connected with the front lens barrel, a diaphragm D is arranged in the front lens barrel and between the rear chamber of the front lens barrel and the rear lens barrel, a fine focusing mechanism which is matched with the front lens barrel and used for focusing is arranged on the main lens barrel, and a diaphragm adjusting mechanism is also arranged on the main lens barrel.
4. A f50mm high definition low distortion semi-group shift industrial lens structure according to claim 3, wherein: the fine focusing mechanism comprises a focusing rotating wheel sleeved between the front part of the front group lens cone and the front part of the main lens cone, the inner ring of the focusing rotating wheel is connected with the outer ring of the front group lens cone, the outer ring of the focusing rotating wheel is connected with the main lens cone, the front part of the focusing rotating wheel is sleeved with a focusing ring positioned on the front side of the main lens cone, the focusing ring is fixedly connected with the focusing rotating wheel, the rear part of the main lens cone is provided with a limiting chute, and the rear part of the front group lens cone is provided with a front group lens cone guide pin which is in sliding fit with the limiting chute.
5. The f50mm high-definition low-distortion half group moving industrial lens structure according to claim 4, wherein: the front end part of the front lens barrel and the main lens barrel are matched to form an annular concave part for installing a focusing ring, the focusing ring is fixedly connected with a focusing rotating wheel through a cone end set screw, and a locking nail for locking the front lens barrel is radially screwed on the periphery of the main lens barrel.
6. The f50mm high-definition low-distortion half group moving industrial lens structure according to claim 5, wherein: the diaphragm adjusting mechanism comprises a diaphragm adjusting ring sleeved on the main lens barrel, a diaphragm guide pin is radially connected to the diaphragm adjusting ring, the diaphragm guide pin penetrates through the main lens barrel and the front lens barrel to be connected with a diaphragm D, and movable grooves for avoiding the diaphragm guide pin are formed in the front lens barrel and the rear lens barrel; the diaphragm adjusting ring is also radially and spirally connected with a locking nail for locking the diaphragm adjusting ring, the rear part of the main lens barrel is also sleeved with a connecting seat, and the rear end of the connecting seat is fixedly connected with the main lens barrel through a locking screw arranged in the axial direction; the rear mirror seat of fixed group lens is installed to the connecting seat, the rear mirror seat stretches into inside the connecting seat and with connecting seat screw thread fixed connection.
7. The f50mm high definition low distortion half group shift industrial lens structure as claimed in claim 3, 4, 5 or 6, wherein: the front part of the mounting cavity of the front group lens barrel is in screw connection with a front pressing ring which is used for being abutted against the periphery of the front side of the negative meniscus lens A1, a first spacing ring is arranged between the negative meniscus lens A2 and the convex flat lens A3 with positive focal power in the front group lens barrel, the first spacing ring is supported against the flat concave lens A4, and the rear cavity of the front group lens barrel is provided with an annular groove which is used for being abutted against the periphery of the rear group lens barrel.
8. The f50mm high definition low distortion half group shift industrial lens structure as claimed in claim 3, 4, 5 or 6, wherein: the rear cavity of the rear lens barrel is provided with an annular convex part which is used for being abutted against the periphery of the front side of the biconvex lens B1, a second space ring is arranged between the biconvex lens B2 and the biconvex lens B3 in the rear lens barrel, the second space ring is supported against the biconcave lens B1, and the rear end of the rear lens barrel is also in threaded connection with a rear group pressing ring which is abutted against the periphery of the rear side of the biconvex lens B3; the rear cavity of the rear mirror seat is provided with an annular convex part which is used for being abutted against the periphery of the front side of the negative meniscus lens C1, a third space ring is arranged between the negative meniscus lens C1 and the biconvex lens C2 in the rear mirror seat, and the rear end of the rear mirror seat is in threaded connection with a rear pressing ring which is abutted against the periphery of the rear side of the biconvex lens C2.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283662A (en) * | 2018-11-14 | 2019-01-29 | 福建福光股份有限公司 | A kind of low industrial camera lens that distorts of F1.4 large aperture 12mm focal length high definition |
| CN110488458A (en) * | 2019-08-06 | 2019-11-22 | 福建福光天瞳光学有限公司 | The industrial camera lens of the low distortion high definition of one kind and its working method |
| CN211454085U (en) * | 2019-10-29 | 2020-09-08 | 福建福光天瞳光学有限公司 | 1.1 inch large target surface 16mm focal length high-definition low-distortion industrial lens |
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| CN109270660B (en) * | 2018-11-19 | 2023-08-11 | 福建福光股份有限公司 | 1.1 inch large target surface 50mm focal length high-definition low-distortion industrial lens and focusing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283662A (en) * | 2018-11-14 | 2019-01-29 | 福建福光股份有限公司 | A kind of low industrial camera lens that distorts of F1.4 large aperture 12mm focal length high definition |
| CN110488458A (en) * | 2019-08-06 | 2019-11-22 | 福建福光天瞳光学有限公司 | The industrial camera lens of the low distortion high definition of one kind and its working method |
| CN211454085U (en) * | 2019-10-29 | 2020-09-08 | 福建福光天瞳光学有限公司 | 1.1 inch large target surface 16mm focal length high-definition low-distortion industrial lens |
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