CN107367828A - A kind of large aperture 4K tight shots - Google Patents
A kind of large aperture 4K tight shots Download PDFInfo
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- CN107367828A CN107367828A CN201710833067.7A CN201710833067A CN107367828A CN 107367828 A CN107367828 A CN 107367828A CN 201710833067 A CN201710833067 A CN 201710833067A CN 107367828 A CN107367828 A CN 107367828A
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- 230000003287 optical effect Effects 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 8
- 229920003023 plastic Polymers 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 8
- 238000009738 saturating Methods 0.000 claims description 17
- 239000005357 flat glass Substances 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000004075 alteration Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 3
- 102220414581 c.33A>G Human genes 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
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- 102220228145 rs1064794513 Human genes 0.000 description 3
- 102220067365 rs143592561 Human genes 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 102220090095 rs1042713 Human genes 0.000 description 1
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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
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
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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
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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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
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- Optics & Photonics (AREA)
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Abstract
The present invention provides a kind of large aperture 4K tight shots, including the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens being arranged in order along optical axis from object space to image space, first lens, the 3rd lens, the 4th lens, the 5th lens and the 8th lens are glass lens, and second lens, the 6th lens and the 7th lens are plastic aspheric lens.The present invention uses 5 sheet glass spherical lenses and 8 optical textures of 3 plastic aspheric lens, visible ray and infrared light can be realized while reach 4K resolution ratio, F1.4 maximum rings, 1/1.8 " the maximum 160 degree angle of visual field of image planes and optics overall length are less than indexs such as 30mm.
Description
Technical field
The present invention relates to lens technology field, more particularly to a kind of large aperture 4K tight shots.
Background technology
Because article size is different in safety monitoring, far and near difference, and camera lens magnifying power difference are generally required picture
Amplify preferably to identify.But the full HD camera pixel of tradition only has 2 mega pixels, if desired by monitored picture amplification then
Can be because pixel be relatively low so that details is smudgy after picture amplification.Therefore safety-security area has gradually risen 4K ultra high-definitions in recent years
Concept, by very-high solution, 4K security monitoring video cameras even if by picture amplification can also keep higher resolution, be advantageous to more
Identify target well.Safety monitoring needs all-weather uninterruptedly to carry out simultaneously, and good picture can not only be presented on daytime micro-
It is also required to present clearly bright image under light and night environment.And brightness of image is determined by two factors, one is mirror
Head aperture size, one be imaging sensor photoperceptivity.With the photosensitive energy of imaging sensor for current scientific and technological level
Power depend on single pixel area, single pixel area it is bigger its by the more good often poor light condition figure below image brightness of light ability more
It is high.Therefore there is one kind 1/1.8 " big image planes 4K imaging sensors, be compared at present that common 1/2.5 " 4K images pass
It significantly increases single pixel area to sensor, possesses preferably by light ability.
But it can reach 1/1.8 on the market at present " 4K wide-angle tight shot is also seldom, and some extraordinary camera lenses perhaps can be with
Reaching 1/1.8, " still often price is too high or does not possess infrared confocal ability for 4K index.Therefore a large aperture is developed
1/1.8 " 4K wide-angle tight shot just seems necessary.For traditional glass spheric glass, it corrects aberration
It is limited in one's ability, while price is higher.If desired a 4K ultra high-definitions are designed, the wide-angle tight shot of large aperture then needs more
Eyeglass, undoubtedly the production cost of camera lens is greatly improved, be unfavorable for marketing.
The content of the invention
The present invention provides a kind of large aperture 4K tight shots, overcomes the technical problem of Shortcomings in the prior art.
In order to solve the above-mentioned technical problem, the technical solution used in the present invention is：
A kind of large aperture 4K tight shots, including the first lens, second saturating being arranged in order along optical axis from object space to image space
Mirror, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens, it is first lens, the 3rd saturating
Mirror, the 4th lens, the 5th lens and the 8th lens are glass lens, and second lens, the 6th lens and the 7th lens are modeling
Expect non-spherical lens.
Further, second lens, the 6th lens and the 7th lens meet following conditional with whole camera lens respectively：
2<∣f2/f∣<6；
0.8<∣f6/f∣<4；
0.8<∣f7/f∣<5；
0.4<∣f6/f7∣<4.5；
Wherein, f is the focal length of whole camera lens, and f2, f6 and f7 correspond to the second lens, the 6th lens and the 7th lens respectively
Focal length.
Further, the 4th lens and the 5th lens are glued forms balsaming lens, the balsaming lens with it is whole
Camera lens meets following conditional：
3.5<∣fe/f∣<80, wherein, fe is the focal length of balsaming lens.
Preferably, first lens are convex-concave negative-power lenses, and second lens are concavo-convex negative-power lenses,
3rd lens are convex flat positive power lens, and the 4th lens are biconvex positive power lens, and the 5th lens are
Concave-concave negative-power lenses, the 6th lens are biconvex positive power lens, and the 7th lens are concave-concave negative-power lenses, and the 8th is saturating
Mirror is biconvex positive power lens.
Preferably, first lens are convex-concave negative-power lenses, and second lens are concavo-convex negative-power lenses,
3rd lens are biconvex positive power lens, and the 4th lens are biconvex positive power lens, and the 5th lens are
Concave-concave negative-power lenses, the 6th lens are biconvex positive power lens, and the 7th lens are that concave-concave negative power is saturating
Mirror, the 8th lens are biconvex positive power lens.
Preferably, first lens are convex-concave negative-power lenses, and second lens are concavo-convex negative-power lenses,
3rd lens are biconvex positive power lens, and the 4th lens are biconvex positive power lens, and the 5th lens are
Concave-concave negative-power lenses, the 6th lens are biconvex positive power lens, and the 7th lens are that concave-concave negative power is saturating
Mirror, the 8th lens are convex-concave positive power lens.
The present invention provides a kind of large aperture 4K tight shots, including is arranged in order along optical axis from object space to image space first saturating
Mirror, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens, its feature exist
In：First lens, the 3rd lens, the 4th lens, the 5th lens and the 8th lens are glass lens, second lens,
6th lens and the 7th lens are plastic aspheric lens.
It is aspherical that there is higher correction aberration ability, it usually can reduce eyeglass number using the camera lens of aspherical lens
Amount, simplify lens construction.Plastic aspherical element eyeglass possesses the ability of good correction aberration, while price is relatively low.Using plastics
The mode that aspherical lens mix with glass lens come manufacture and design camera lens can obtain imaging image quality it is outstanding, price is relatively reasonable
Product.By the present invention in that combine to form 8 chip optical textures with 5 sheet glass spherical lenses and 3 plastic aspheric lens,
And the relative position of the suitable lens of reasonable selection and layout lens, visible ray and infrared light can be realized while reach 4K resolutions
Rate, F1.4 maximum ring, 1/1.8 " the maximum 160 degree angle of visual field of image planes and optics overall length less than indexs such as 30mm, and
Cost is relatively low, market prospects are extensive.
Brief description of the drawings
Fig. 1 is a kind of first embodiment structural representation of large aperture 4K tight shots of the present invention；
Fig. 2 is a kind of second embodiment structural representation of large aperture 4K tight shots of the present invention；
Fig. 3 is a kind of 3rd embodiment structural representation of large aperture 4K tight shots of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, embodiments of the present invention are specifically illustrated, accompanying drawing is only for reference and explanation uses, and does not form pair
The limitation of scope of patent protection of the present invention.
As shown in Figures 1 to 3, a kind of large aperture 4K tight shots, including be arranged in order along optical axis from object space to image space
One lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7 and the 8th lens
8, first lens 1, the 3rd lens 3, the 4th lens 4, the 5th lens 5 and the 8th lens 8 are glass lens, and described second is saturating
Mirror 2, the 6th lens 6 and the 7th lens 7 are plastic aspheric lens.
Further, second lens 2, the 6th lens 6 and the 7th lens 7 meet following condition with whole camera lens respectively
Formula：
2<∣f2/f∣<6；
0.8<∣f6/f∣<4；
0.8<∣f7/f∣<5；
0.4<∣f6/f7∣<4.5；
Wherein, f is the focal length of whole camera lens, and f2, f6 and f7 correspond to the second lens, the 6th lens and the 7th lens respectively
Focal length.
Further, the 4th lens 4 and the 5th lens 5 are glued forms balsaming lens, the balsaming lens with it is whole
Individual camera lens meets following conditional：3.5<∣fe/f∣<80, wherein, fe is the focal length of balsaming lens.
Embodiment one：Fig. 1 is refer to, first lens 1 are convex-concave negative-power lenses, and second lens 2 are recessed
Convex negative-power lenses, the 3rd lens 3 are convex flat positive power lens, and the 4th lens 4 are that biconvex positive light coke is saturating
Mirror, the 5th lens 5 are concave-concave negative-power lenses, and the 6th lens 6 are biconvex positive power lens, and the 7th lens 7 are double
Recessed negative-power lenses, the 8th lens 8 are biconvex positive power lens.
First lens are as shown in the table to the 8th lens parameters：
| F1=-13.5~-4.5 | N1=1.43~1.85 | R1=15~500 | R2=3.1~6.1 |
| F2=-31.5~-10.1 | N2=1.47~1.68 | R3=-8.9~-3.1 | R4=-50~-4.5 |
| F3=6.5~20.5 | N3=1.7~2.1 | R5=5~50 | R6=PL |
| F4=3.3~15.5 | N4=1.43~1.7 | R7=5.5~19.7 | R8=-9.2~-3 |
| F5=-13.5~-3.2 | N5=1.43~1.8 | R9=-9.2~-3 | R10=5~50 |
| F6=5.1~18.3 | N6=1.46~1.65 | R11=5.6~19.2 | R12=-4.5~-18.5 |
| F7=-25.3~-7.1 | N7=1.5~1.75 | R13=-25.3~-9.6 | R14=9.6~30.2 |
| F8=6.5~22.1 | N8=1.43~1.7 | R15=5.3~21.5 | R16=- ∞~-15 |
Wherein, f1 to f8 represents the first lens to the focal length of lens of the 8th lens respectively in order；N1 to n8 is in order
The first lens are represented respectively to the refractive index of the 8th lens；R1, R3, R5, R7, R9, R11, R13, R15 are represented respectively in order
Radius of curvature of first lens to the 8th lens towards object space side centre of surface, R2, R4, R6, R8, R10, R12, R14,
R16 represents radius of curvature of first lens to the 8th lens towards image space side centre of surface, the "-" side of representative respectively in order
To be negative.
Because the second lens, the 6th lens and the 7th lens are non-spherical lens, each lens mirror shape expires for its
Sufficient following equation：
Wherein, r represents radial coordinate, and unit is identical with length of lens unit, and c is the song corresponding to surface central radius
Rate, k are circular cone whose conic coefficient, α1To α8For high order aspheric surface coefficient.
Meet that the asphericity coefficient of above-mentioned aspherical equation formula is as shown in the table in embodiment one：
In the present embodiment, the optical physics parameter of the first lens to the 8th lens is as shown in the table：
| Face sequence number | Face type | R | D | nd | K values |
| S1 | Sphere | 33.13 | 0.55 | 1.63 | |
| S2 | Sphere | 4.502 | 4.05 | ||
| S3 | It is aspherical | -4.671 | 3 | 1.66 | -0.535 |
| S4 | It is aspherical | -8.911 | 0.1 | -1.293 | |
| S5 | Sphere | 10.645 | 1.7 | 1.95 | |
| S6 | Sphere | PL | 0 | ||
| Diaphragm | Plane | PL | 4.4 | ||
| S7 | Sphere | 8.014 | 3.6 | 1.43 | |
| S8 | Sphere | -5.211 | |||
| S9 | Sphere | -5.211 | 0.6 | 1.65 | |
| S10 | Sphere | 27.43 | 0.1 | ||
| S11 | It is aspherical | 11.121 | 1.75 | 1.55 | 0.335 |
| S12 | It is aspherical | -8.571 | 0.05 | -19.553 | |
| S13 | It is aspherical | -16.533 | 0.93 | 1.65 | -6.101 |
| S14 | It is aspherical | 21.55 | 0.1 | -30.572 | |
| S15 | Sphere | 8.573 | 1.97 | 1.6 | |
| S16 | Sphere | -220.23 |
Wherein, R is surface central radius size, and D is to correspond to optical surface to next optical surface in the distance on optical axis；
Nd corresponds to the refractive index of d light (wavelength 587nm)；S1 and S2 is the object side surface and image interface of the first lens 1, and S3 and S4 are
The object side surface and image interface of second lens 2, S5 and S6 are the object side surface and image interface of the 3rd lens 3, and diaphragm is light
Plane where late；S7 and S8 is the object side surface and image interface of the 4th lens 4；S9 and S10 is the object side surface of the 5th lens 5
And image interface；S11 and S12 is the object side surface and image interface of the 6th lens 6；S13 and S14 is the object space of the 7th lens 7
Surface and image interface；S15 and S16 is the object side surface and image interface of the 8th lens 8.
Embodiment two：Fig. 2 is refer to, compared with embodiment one, the number amount and type of lens are essentially identical, but specifically
Lens parameter and layout are different.
First lens 1 are convex-concave negative-power lenses, and second lens 2 are concavo-convex negative-power lenses, described
3rd lens 3 are biconvex positive power lens, and the 4th lens 4 are biconvex positive power lens, and the 5th lens 5 are double
Recessed negative-power lenses, the 6th lens 6 are biconvex positive power lens, and the 7th lens 7 are that concave-concave negative power is saturating
Mirror, the 8th lens 8 are biconvex positive power lens.
First lens are as shown in the table to the 8th index of refraction in lens, focal length and radius of curvature parameter：
| F1=-11.5~-4.5 | N1=1.43~1.85 | R1=15~200 | R2=3.1~8.9 |
| F2=-21.5~-10.1 | N2=1.47~1.68 | R3=-8.9~-3.1 | R4=-40~-4.5 |
| F3=6.5~13.5 | N3=1.7~2.1 | R5=5~50 | R6=-400~-10 |
| F4=6.5~15.5 | N4=1.43~1.7 | R7=5.5~35 | R8=-9.2~-3 |
| F5=-10~-3 | N5=1.43~1.8 | R9=-9.2~-3 | R10=5~80 |
| F6=5.1~12.3 | N6=1.46~1.65 | R11=5.6~19.2 | R12=-18.5~-4.5 |
| F7=-20.3~-7.5 | N7=1.5~1.75 | R13=-70~-9.6 | R14=5~35 |
| F8=10~21 | N8=1.43~1.7 | R15=5.3~16.5 | R16=- ∞~-10 |
Meet that the asphericity coefficient of above-mentioned aspherical equation formula is as shown in the table in embodiment two：
| S3 | S4 | S11 | S12 | S13 | S14 | |
| α1 | 0 | 0 | 0 | 0 | 0 | 0 |
| α2 | 3.11E-03 | 6.75E-04 | 1.48E-03 | -2.98E-03 | -7.04E-03 | -3.16E-03 |
| α3 | 5.47E-05 | 1.59E-05 | -5.38E-05 | 3.37E-04 | 7.78E-04 | 4.13E-04 |
| α4 | -1.94E-06 | -2.09E-06 | 5.80E-06 | -4.83E-06 | -2.05E-05 | -2.37E-05 |
| α5 | 5.07E-07 | 4.22E-07 | -5.20E-08 | -7.63E-08 | -7.09E-07 | -5.32E-07 |
| α6 | -3.96E-08 | -1.19E-08 | -2.87E-09 | 6.32E-08 | 1.44E-07 | 6.53E-08 |
| α7 | 1.34E-09 | 2.56E-10 | 9.17E-10 | -2.09E-09 | -6.20E-09 | -1.98E-09 |
| α8 | 0 | 0 | 0 | 0 | 0 | 0 |
In the present embodiment, the optical physics parameter of the first lens to the 8th lens is as shown in the table：
Embodiment three：Fig. 3 is refer to, compared with embodiment one, the number amount and type of lens are essentially identical, but specifically
Lens parameter and layout are different.
First lens 1 are convex-concave negative-power lenses, and second lens 2 are concavo-convex negative-power lenses, described
3rd lens 3 are biconvex positive power lens, and the 4th lens 4 are biconvex positive power lens, and the 5th lens 5 are double
Recessed negative-power lenses, the 6th lens 6 are biconvex positive power lens, and the 7th lens 7 are that concave-concave negative power is saturating
Mirror, the 8th lens 8 are convex-concave positive power lens.
First lens are as shown in the table to the 8th lens parameters：
| F1=-11.5~-4.5 | N1=1.43~1.85 | R1=50~∞ | R2=3.1~9 |
| F2=-21.5~-12 | N2=1.47~1.68 | R3=-8.9~-3.1 | R4=-40~-4.5 |
| F3=6.5~15 | N3=1.7~2.1 | R5=5~50 | R6=-40~-10 |
| F4=6.5~15.5 | N4=1.43~1.7 | R7=5.5~19.7 | R8=-9.2~-3 |
| F5=-10~-3 | N5=1.43~1.8 | R9=-9.2~-3 | R10=3.5~35 |
| F6=6~12 | N6=1.46~1.65 | R11=5.6~19.2 | R12=-18.5~-4.5 |
| F7=-25~-7.5 | N7=1.5~1.75 | R13=-30~-5.6 | R14=7~255 |
| F8=10~30 | N8=1.43~1.7 | R15=5.3~16.5 | R16=15~500 |
Meet that the asphericity coefficient of above-mentioned aspherical equation formula is as shown in the table in embodiment three：
In the present embodiment, the optical physics parameter of the first lens to the 8th lens is as shown in the table：
| Face sequence number | Face type | R | D | nd | K values |
| S1 | Sphere | 322 | 0.58 | 1.69 | |
| S2 | Sphere | 6.76 | 3 | ||
| S3 | It is aspherical | -5.28 | 1.65 | 1.66 | -0.47 |
| S4 | It is aspherical | -10.43 | 0.07 | -10.02 | |
| S5 | Sphere | 23 | 2.65 | 1.9 | |
| S6 | Sphere | -14.65 | 0.01 | ||
| Diaphragm | Plane | PL | 0.08 | ||
| S7 | Sphere | 8.87 | 5 | 1.43 | |
| S8 | Sphere | -7.03 | |||
| S9 | Sphere | -7.03 | 0.6 | 1.65 | |
| S10 | Sphere | 7.03 | 3.23 | ||
| S11 | It is aspherical | 6.74 | 2.67 | 1.55 | 1.58 |
| S12 | It is aspherical | -11.5 | 0.6 | 1.13 | |
| S13 | It is aspherical | -7.52 | 0.65 | 1.65 | -18.2 |
| S14 | It is aspherical | 168.7 | 0.8 | 106.88 | |
| S15 | Sphere | 8.13 | 1.745 | 1.55 | |
| S16 | Sphere | 39.48 |
The lens of three above embodiment have identical fastening means as follows：First lens are directly tight with the second lens
Lean on, the second lens and the 3rd lens spacer ring close-fitting, the 3rd lens and the 4th lens are by spacer ring close-fitting, the 4th lens and the 5th saturating
Mirror forms balsaming lens by gluing, and the 5th lens and the 6th lens pass through spacer ring close-fitting, the 6th lens and the 7th lens
It is directly abutted against, the 7th lens and the 8th lens are abutted by spacer ring.
Above disclosed is only presently preferred embodiments of the present invention, it is impossible to the rights protection model of the present invention is limited with this
Enclose, therefore the equivalent variations made according to scope of the present invention patent, still belong to the scope that the present invention is covered.
Claims (6)
1. a kind of large aperture 4K tight shots, including be arranged in order along optical axis from object space to image space the first lens, the second lens,
3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens, it is characterised in that：Described first is saturating
Mirror, the 3rd lens, the 4th lens, the 5th lens and the 8th lens are glass lens, second lens, the 6th lens and the 7th
Lens are plastic aspheric lens.
A kind of 2. large aperture 4K tight shots according to claim 1, it is characterised in that：It is second lens, the 6th saturating
Mirror and the 7th lens meet following conditional with whole camera lens respectively：
2<∣f2/f∣<6；
0.8<∣f6/f∣<4；
0.8<∣f7/f∣<5；
0.4<∣f6/f7∣<4.5；
Wherein, f is the focal length of whole camera lens, and f2, f6 and f7 correspond to Jiao of the second lens, the 6th lens and the 7th lens respectively
Away from.
A kind of 3. large aperture 4K tight shots according to claim 2, it is characterised in that：4th lens and the 5th saturating
Mirror is glued to form balsaming lens, and the balsaming lens meets following conditional with whole camera lens：
3.5<∣fe/f∣<80, wherein, fe is the focal length of balsaming lens.
A kind of 4. large aperture 4K tight shots according to any one of claims 1 to 3, it is characterised in that：Described first is saturating
Mirror is convex-concave negative-power lenses, and second lens are concavo-convex negative-power lenses, and the 3rd lens are the positive light focuss of convex flat
Lens are spent, the 4th lens are biconvex positive power lens, and the 5th lens are concave-concave negative-power lenses, the 6th lens
It is biconvex positive power lens, the 7th lens are concave-concave negative-power lenses, and the 8th lens are biconvex positive power lens.
A kind of 5. large aperture 4K tight shots according to any one of claims 1 to 3, it is characterised in that：Described first is saturating
Mirror is convex-concave negative-power lenses, and second lens are concavo-convex negative-power lenses, and the 3rd lens are the positive light focuss of biconvex
Lens are spent, the 4th lens are biconvex positive power lens, and the 5th lens are concave-concave negative-power lenses, the described 6th
Lens are biconvex positive power lens, and the 7th lens are concave-concave negative-power lenses, and the 8th lens are the positive light of biconvex
Power lenses.
A kind of 6. large aperture 4K tight shots according to any one of claims 1 to 3, it is characterised in that：Described first is saturating
Mirror is convex-concave negative-power lenses, and second lens are concavo-convex negative-power lenses, and the 3rd lens are the positive light focuss of biconvex
Lens are spent, the 4th lens are biconvex positive power lens, and the 5th lens are concave-concave negative-power lenses, the described 6th
Lens are biconvex positive power lens, and the 7th lens are concave-concave negative-power lenses, and the 8th lens are the positive light of convex-concave
Power lenses.
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| CN201710833067.7A CN107367828A (en) | 2017-09-15 | 2017-09-15 | A kind of large aperture 4K tight shots |
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| CN201710833067.7A Pending CN107367828A (en) | 2017-09-15 | 2017-09-15 | A kind of large aperture 4K tight shots |
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| CN109507785A (en) * | 2018-12-26 | 2019-03-22 | 东莞市宇瞳光学科技股份有限公司 | A kind of infrared confocal camera lens |
| CN109541780A (en) * | 2018-11-16 | 2019-03-29 | 江西联创电子有限公司 | Optical lens and imaging device |
| CN110488470A (en) * | 2018-05-14 | 2019-11-22 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| WO2020143420A1 (en) * | 2019-01-07 | 2020-07-16 | 广东弘景光电科技股份有限公司 | High-resolution, wide angle, day and night confocal optical system and camera module used by same |
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