CN106842547A - Inside peep and use imaging lens optical system - Google Patents
Inside peep and use imaging lens optical system Download PDFInfo
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- CN106842547A CN106842547A CN201710101554.4A CN201710101554A CN106842547A CN 106842547 A CN106842547 A CN 106842547A CN 201710101554 A CN201710101554 A CN 201710101554A CN 106842547 A CN106842547 A CN 106842547A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2423—Optical details of the distal end
- G02B23/243—Objectives for endoscopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
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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
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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
- G02B13/0035—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 three lenses
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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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Abstract
Imaging lens optical system is used the invention discloses being peeped in one kind, include the first lens group, diaphragm and the second lens group successively to image side from object side, first lens group has positive light coke, first lens group is made up of the first lens and the second lens, second lens group is made up of the 3rd lens with positive light coke, first lens, the second lens and the 3rd lens are satisfied the following conditional expression by being made up of plastic material：f/H(L1r1)<4；H(L1r1)/IMH<0.5；Wherein, f is interior peeping with the focal length of imaging lens optical system, the height corresponding to face that the corresponding chief ray of maximum image height passes through the object side of the first lens group when H (L1r1) refers to normal observation, maximum image height when IMH is normal observation on corresponding chip photosurface.The present invention provide in peep and use imaging lens optical system, with path, visual field wide-angle be big, aberration correction is well and the characteristics of low cost.
Description
Technical field
The present invention relates to a kind of objective lens optical system, specifically, it is related to be peeped in one kind and uses imaging lens optical system.
Background technology
Endoscope is a kind of medical optical instrument, by internal by human body natural's cavity feeding in vitro, internal disease is entered
Row checks, can observe directly internal organs inner chamber lesion, determines its position, scope, and can be taken a picture, biopsy or brushing piece, greatly
The big accuracy rate of diagnosis that improve cancer, and some minimal invasive operations can be carried out.
In order to more mitigate the pain of patient, shorten the time of post-operative rehabilitation, mitigate the work of doctor, raising can
Depending on the diagnostic level changed and science dataization judge, then need further to reduce wosap tv system and improve it to be imaged
Shooting effect, thus research and using the bigger shooting visual field, more it is small it is apparent in peep shooting objective lens optical system as skill
Problem in art.
In order to realize miniaturization and good optical property, recorded in Chinese patent literature CN204101801U from object
In side is made up of the first lens with negative power, diaphragm, the second lens with positive light coke and the 3rd lens successively
Sight glass objective system.It passes through using weak optical power and main the first lens and the 3rd lens for playing aberration correction function clip tool
There is the burnt construction for being implemented as the second lens of picture of high light, constructed as three lens that can reach miniaturization, Neng Goushi
Now good imaging performance.But its first lens is aspherical using glass molding, and its manufacturing cost is very high, and relatively high
For the plastic lens of speed injection production, glass is molded aspherical production efficiency also than relatively low, is unfavorable for producing in enormous quantities.
The content of the invention
Imaging lens optical system is used it is an object of the invention to provide being peeped in one kind, it is big with path, visual field wide-angle
And the characteristics of low cost.
Peeping the technical scheme used with imaging lens optical system in disclosed by the invention is:
Peeped in a kind of and use imaging lens optical system, from object side to image side successively including the first lens group, diaphragm and the
Two lens groups, first lens group has positive light coke, and first lens group is made up of the first lens and the second lens, institute
State the second lens group to be made up of the 3rd lens with positive light coke, first lens, the second lens and the 3rd lens are
It is made up of plastic material, and is satisfied the following conditional expression：
f/H(L1r1)<4；
H(L1r1)/IMH<0.5；
Wherein, f is interior peeping with the focal length of imaging lens optical system, maximum image height pair when H (L1r1) refers to normal observation
The height corresponding to face that the chief ray answered passes through the object side of the first lens group, corresponding chip sense when IMH is normal observation
Maximum image height in smooth surface.
Preferably, first lens group is satisfied the following conditional expression：
0.4<f/f_G1<1.0；
Wherein, f_G1 is the focal length of above-mentioned first lens group.
Preferably, first lens group by the first lens with negative power and with positive light coke
Two lens are constituted, and are satisfied the following conditional expression：
-2.0<f/f1<-0.3；
1.0<f/f2<1.8；
Wherein, f1 is the focal length of the first lens, and f2 is the focal length of the second lens.
Preferably, the 3rd lens are satisfied the following conditional expression:
f/f3<0.4；
Wherein, f3 is the focal length of the 3rd lens.
Preferably, first lens and the second lens are also satisfied the following conditional expression：
|1/(f1*V1)+1/(f2*V2)+1/(f3*V3)|<0.02；
Wherein, V1 is the Abbe number of the first lens, and V2 is the Abbe number of the second lens, and V3 is the Abbe number of the 3rd lens.
Preferably, inside peep and also satisfied the following conditional expression with imaging lens optical system：
TTL/f<3.2；
BF/f>1.4；
Wherein, TTL is distance of the thing side of the first lens to chip on optical axis, and BF is that the image side surface of the 3rd lens is arrived
Distance of the chip on optical axis.
Preferably, first lens at least one side is aspherical, and second lens are at least simultaneously
It is aspherical.
Preferably, the 3rd Lens have the aspherical of at least one side.
Preferably, the image side surface of first lens and the thing side of the second lens are glued at one by glue
Rise.
Peeped in disclosed by the invention is with the beneficial effect of imaging lens optical system：By conditional f/H (L1r1)<4
Focal length to objective lens optical system is defined, and wide angle, conditional H (L1r1)/IMH is better achieved<0.5 by routine
Height H (L1r1) and routine during observation corresponding to the face of the object side that the corresponding chief ray of maximum image height passes through the first lens group
The ratio between maximum image height IMH during observation on corresponding chip photosurface is defined, and is realizing the premise of downsizing
Under, optimize curvature of the image, and difference outside axle is suppressed, and constitute the first of positive light coke by the first lens and the second lens
Lens group, the second lens group is made up of the 3rd lens with positive light coke so that the objective lens optical system that the present invention is provided,
The characteristics of with path, big visual field wide-angle and good aberration correction, because the first lens, the second lens and the 3rd lens are
Plastic material is made, low cost, beneficial to popularization.
Brief description of the drawings
Fig. 1 is that the structural representation with imaging lens optical system embodiment one is peeped in the present invention；
Fig. 2 is that the aberration curve schematic diagram with imaging lens optical system embodiment one is peeped in the present invention；
Fig. 3 is that the structural representation with imaging lens optical system embodiment two is peeped in the present invention；
Fig. 4 is that the aberration curve schematic diagram with imaging lens optical system embodiment two is peeped in the present invention.
Fig. 5 is that the structural representation with imaging lens optical system embodiment three is peeped in the present invention；
Fig. 6 is that the aberration curve schematic diagram with imaging lens optical system embodiment three is peeped in the present invention.
Specific embodiment
The present invention is further elaborated and illustrated with reference to specific embodiment and Figure of description:
Peeped in one kind and use imaging lens optical system, include that with negative power first is saturating successively from object side to image side
Microscope group, diaphragm, the second lens group with positive light coke, optical filter, plate glass and chip photosurface.The optical filter is main
It is that, for ending specific wavelength, the plate glass mainly protects the photosurface of chip.
The first lens that first lens group is concave surface with negative power by image side surface and with positive light coke
Second lens are constituted, and compared to single lens, are conducive to marginal aberration to correct, and second lens group is by with positive light coke the
Three lens are constituted.
By setting following conditionals (1) and (2), so as to be peeped in successfully realizing with the path of imaging lens optical system
And wide angle.
f/H(L1r1)<4； (1)
H(L1r1)/IMH<0.5； (2)
Conditional (1) is peeped with the focal length of imaging lens optical system, if interior peeping uses imaging lens optical system in defining
Focal length it is long, focal power is excessively weak, and focusing power is not enough, and wide angle is difficult to be realized.
Conditional (2) defines the interior optics effective aperture peeped with the first lens of imaging lens optical system.It is general public
Know, the size of imager chip largely determines the diameter of endoscope, small-bore in order to constantly realize, maximum image height is corresponding
The height H (L1r1) corresponding to face that chief ray passes through the object side of the first lens group determines the size of aperture of lens, also
That the physics bore with imaging lens optical system is peeped in determining, H (L1r1)/IMH is less than certain value, then be capable of achieving in peep use
The downsizing of imaging lens optical system.
Further, inside peep and satisfied the following conditional expression with imaging lens optical system：
0.4<f/f_G1<1.0； (3)
By the weak optical power of the lens group of reasonable disposition first, make its fully turn back off-axis ray while will not bring volume into
The curvature of field aberration of the outer outer visual field of increased aberration, particularly axle, if the focal power of the first lens group of configuration is too strong, then can increase
The burden of the second lens group aberration correction, causes interior peeping to use imaging lens optical system more complicated.
Further, it is preferable to interior peep saturating by with negative power first with the first lens group of imaging lens optical system
Mirror and the second lens with positive light coke are constituted, and the first lens and the second lens are satisfied the following conditional expression：
-2.0<f/f1<-0.3； (4)
1.0<f/f2<1.8； (5)
By the optical power profile of the lens group of reasonable disposition first, it is set preferably to compress big field rays simultaneously effectively poly-
Burnt light.If f/f1 exceedes the upper limit of the condition (4), the negative power of the first lens is excessively weak, it is impossible to the light of the outer visual field of axle
Line is effectively turned back；If f/f1 is less than the lower limit of the condition (4), the negative power of the first lens group is too strong, increases
The aberration correction difficulty of the outer visual field of axle.
If f/f2 exceedes the upper limit of the condition (5), the positive light coke of the second lens group is too strong, heavy system spherical aberration
Correction and the correction of the off-axis aberration particularly curvature of field；If f/f1 is less than the lower limit of the condition (5), the second power of lens
Cross weak, it is impossible to effectively focus on light, increase the structure length of system.
Conditional (4) limits the refractive index of the first lens.
Further, second lens group is made up of the 3rd lens, and the 3rd lens are satisfied the following conditional expression：
f/f3<0.4； (6)
The Main Function of the second lens group threeth lens of the configuration with positive weak optical power is aberration correction.If f/f3 exceeds
The upper limit of the condition (6), then focal power is too strong, is unfavorable for spherical aberration and off-axis aberration on correction axle.
Imaging lens optical system is used in order to obtain being peeped in high performance, is satisfied the following conditional expression：
|1/(f1*V1)+1/(f2*V2)+1/(f3*V3)|<0.02； (7)
Imaging lens optical system is used in order to be peeped in being miniaturized, in addition it is also necessary to satisfy the following conditional expression：
TTL/f<3.2； (8)
BF/f>1.4； (9)
In order to realize path, wide-angle and high-performance, it is aspherical, the second lens that first lens have at least 1 face
It is aspherical with least 1 face, it is aspherical, preferably described first lens, the second lens that the 3rd lens have at least 1 face
It is aspherical to be respectively provided with 2 faces with the 3rd lens.It is aspherical by setting, be conducive to optical aberration correcting.It should be noted that described
First lens, the second lens and the 3rd lens be set to it is aspherical in the case of, it is preferred to use plastic-injection lens, its production
Efficiency high and low cost.
It should be noted that being peeped in above-mentioned can realize path, wide-angle with imaging lens optical system and high definition is optical
Can technological thought as described above, however, specifically, can realize in system-wide lens maximum lens be external diameter 2.0mm with
Under, and interior the peeping of preferably below 1.0mm uses imaging lens optical system.
Important explanation is needed, in order to realize path, wide-angle and more than million high definition optical properties, in this embodiment party
In case, following aspherical formulas are used：
Wherein, Z represents the aspherical rise along optical axis direction, and y represents the aspherical distance along vertical optical axis direction, c tables
Show curvature of centre, be the inverse of radius, k represents circular cone coefficient or quadratic term constant, A4-A16 represent respectively 4 times -16 times it is non-
Asphere coefficient
It is above-mentioned meet be respectively described below：
f:Inside peep with the focal length of imaging lens optical system；f1:The focal length of the first lens；f2:The focal length of the second lens；
f3:The focal length of the 3rd lens；H(L1r1):The object that the corresponding chief ray of maximum image height passes through the first lens when referring to normal observation
Height corresponding to the face of side；IMH:Maximum image height during normal observation on corresponding chip photosurface；V1:First lens Ah
Shellfish number；V2:The Abbe number of the second lens；V3:The Abbe number of the 3rd lens；BF:The image side surface of the 3rd lens is to chip in optical axis
On distance；TTL:First lens thing side distance on optical axis to chip.
Embodiment one
Fig. 1 is refer to, peeped in one kind includes having negative light burnt from object side to image side successively with imaging lens optical system
The first lens group 10, diaphragm 30, the second lens group 20 with positive light coke, optical filter 40, plate glass 50 and the chip spent
Photosurface 60.The optical filter 40 is mainly used for ending specific wavelength, and the plate glass 50 mainly protects the photosensitive of chip
Face 60.
First lens group 10 is made up of the first lens 11 of negative power and the second lens 12 with positive light coke,
The thing side of first lens 11 and image side surface are concave surface, and the thing side of first lens 11 is sphere, described first
The image side surface of lens 11 is aspherical, and the thing side of second lens and image side surface are convex surface, and are aspherical, the light
Door screen 30 is arranged on the image side surface of the second lens 12, and the second lens group 20 is made up of the 3rd lens 21 of positive light coke, and described the
The thing side of three lens 21 is that, with the aspherical of curvature flex point, its image side surface is convex surface, and for aspherical.Use is peeped in the present embodiment
Imaging lens optical system realizes image height 1.05mm, and full filed angle is more than 100 degree, and bore is less than 1.2mm.Following table is the present embodiment
The data for using imaging lens optical system are inside peeped, the various aberration curve figures of the present embodiment refer to Fig. 2.
Asphericity coefficient
In above table, the 2nd face is the thing side of the first lens, and the 3rd face is the image side surface of the first lens, and the 4th face is the
The thing side of two lens, the 5th face is the image side surface of the second lens, and the 6th face is the thing side of the 3rd lens, and the 7th face is the 3rd saturating
The image side surface of mirror, the 8th face is the thing side of optical filter, and the 9th face is the image side surface of optical filter, and the 10th face is the thing side of plate glass
Face, the 11st face is the image side surface of plate glass.
Embodiment two
Fig. 3 is refer to, peeped in one kind includes having negative light burnt from object side to image side successively with imaging lens optical system
The first lens group 10, diaphragm 30, the second lens group 20 with positive light coke, optical filter 40, plate glass 50 and the chip spent
Photosurface 60.The optical filter 40 is mainly used for ending specific wavelength, and the plate glass 50 mainly protects the photosensitive of chip
Face 60.
First lens group 10 is made up of the first lens 11 of negative power and the second lens 12 with positive light coke,
The thing side of first lens 11 and image side surface are concave surface, and the thing side of first lens 11 and image side surface are aspheric
Face, the thing side of second lens and image side surface are convex surface, and for aspherical, the diaphragm 30 is arranged at the second lens 12
Image side surface on, the second lens group 20 is made up of the 3rd lens 21 of positive light coke, and the thing side of the 3rd lens 21 is band
Curvature flex point it is aspherical, its image side surface is convex surface, and for aspherical.Peeped in the present embodiment and realized with imaging lens optical system
Image height 1.02mm, full filed angle is more than 100 degree, and bore is less than 1.5mm.Following table is to peep to use imaging lens optical system in the present embodiment
The data of system, the various aberration curve figures of the present embodiment refer to Fig. 4.
Aspherical parameter
In above table, the 2nd face is the thing side of the first lens, and the 3rd face is the image side surface of the first lens, and the 4th face is the
The thing side of two lens, the 5th face is the image side surface of the second lens, and the 6th face is the thing side of the 3rd lens, and the 7th face is the 3rd saturating
The image side surface of mirror, the 8th face is the thing side of optical filter, and the 9th face is the image side surface of optical filter, and the 10th face is the thing side of plate glass
Face, the 11st face is the image side surface of plate glass.
Embodiment three
Fig. 5 is refer to, peeped in one kind includes having negative light burnt from object side to image side successively with imaging lens optical system
The first lens group 10, diaphragm 30, the second lens group 20 with positive light coke, optical filter 40, plate glass 50 and the chip spent
Photosurface 60.The optical filter 40 is mainly used for ending specific wavelength, and the plate glass 50 mainly protects the photosensitive of chip
Face 60.
Second lens 12 of first lens group 10 by the first lens 11 of negative power and with positive light coke are glued
Constitute, the thing side of first lens 11 is concave surface, image side surface is convex surface, and be it is aspherical, second lens
Thing side and image side surface are convex surface, and are aspherical, the thing side of the image side surface of first lens 11 and the second lens 12
It is glued together by glue, chromatic aberration correction effect is improved, the diaphragm 30 is arranged on the image side surface of the second lens 12, and second
Lens group 20 is made up of the 3rd lens 21 of positive light coke, the thing side of the 3rd lens 21 for concave surface and for aspherical, its
Image side surface is convex surface and for aspherical.Peeped in the present embodiment and realize image height 1.07mm, full filed angle with imaging lens optical system
More than 108 degree, bore is less than 1.5mm.Following table is that the data for using imaging lens optical system are peeped in the present embodiment, the present embodiment
Various aberration curve figures refer to Fig. 6.
Aspherical parameter
In above table, the 2nd face is the thing side of the first lens, and the 3rd face is the image side surface of the first lens, and the 4th face is the
The thing side of two lens, the 5th face is the image side surface of the second lens, and the 6th face is the thing side of the 3rd lens, and the 7th face is the 3rd saturating
The image side surface of mirror, the 8th face is the thing side of optical filter, and the 9th face is the image side surface of optical filter, and the 10th face is the thing side of plate glass
Face, the 11st face is the image side surface of plate glass.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of scope is protected, although being explained to the present invention with reference to preferred embodiment, one of ordinary skill in the art should
Work as understanding, technical scheme can be modified or equivalent, without deviating from the reality of technical solution of the present invention
Matter and scope.
Claims (9)
1. peeped in one kind and use imaging lens optical system, the first lens group, diaphragm and second are included successively to image side from object side
Lens group, it is characterised in that first lens group has positive light coke, first lens group is saturating by the first lens and second
Microscope group is made up of into, second lens group the 3rd lens with positive light coke, first lens, the second lens and the
Three lens are satisfied the following conditional expression by being made up of plastic material：
f/H(L1r1)<4；
H(L1r1)/IMH<0.5；
Wherein, f is the interior focal length peeped and use imaging lens optical system, and maximum image height is corresponding when H (L1r1) refers to normal observation
The height corresponding to face that chief ray passes through the object side of the first lens group, corresponding chip photosurface when IMH is normal observation
On maximum image height.
2. peeped in as claimed in claim 1 and use imaging lens optical system, it is characterised in that the first lens group satisfaction with
Lower conditional：
0.4<f/f_G1<1.0；
Wherein, f_G1 is the focal length of above-mentioned first lens group.
3. interior peeping as claimed in claim 2 uses imaging lens optical system, it is characterised in that first lens group is by having
First lens of negative power and the second lens with positive light coke are constituted, and are satisfied the following conditional expression：
-2.0<f/f1<-0.3；
1.0<f/f2<1.8；
Wherein, f1 is the focal length of the first lens, and f2 is the focal length of the second lens.
4. interior peeping as claimed in claim 3 uses imaging lens optical system, it is characterised in that the 3rd lens meet following
Conditional:
f/f3<0.4；
Wherein, f3 is the focal length of the 3rd lens.
5. as described in claim any one of 1-4 in peep and use imaging lens optical system, it is characterised in that first lens
Also satisfied the following conditional expression with the second lens：
|1/(f1*V1)+1/(f2*V2)+1/(f3*V3)|<0.02；
Wherein, V1 is the Abbe number of the first lens, and V2 is the Abbe number of the second lens, and V3 is the Abbe number of the 3rd lens.
6. interior peeping as claimed in claim 5 uses imaging lens optical system, it is characterised in that also satisfy the following conditional expression：
TTL/f<3.2；
BF/f>1.4；
Wherein, TTL is distance of the thing side of the first lens to chip on optical axis, and BF is the image side surface of the 3rd lens to chip
Distance on optical axis.
7. as described in claim any one of 1-4 in peep and use imaging lens optical system, it is characterised in that first lens
At least one side is aspherical, and second lens at least one side is aspherical.
8. interior peeping as claimed in claim 7 uses imaging lens optical system, it is characterised in that the 3rd Lens have
At least one side it is aspherical.
9. as described in claim any one of 1-4 in peep and use imaging lens optical system, it is characterised in that first lens
Image side surface and the second lens thing side by glue it is glued together.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710101554.4A CN106842547B (en) | 2017-02-24 | 2017-02-24 | Imaging objective optical system for endoscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710101554.4A CN106842547B (en) | 2017-02-24 | 2017-02-24 | Imaging objective optical system for endoscope |
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| CN106842547A true CN106842547A (en) | 2017-06-13 |
| CN106842547B CN106842547B (en) | 2023-04-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107874733A (en) * | 2017-12-04 | 2018-04-06 | 中山市众盈光学有限公司 | A kind of small-bore endoscope optical system |
| CN113490877A (en) * | 2020-07-31 | 2021-10-08 | 深圳市大疆创新科技有限公司 | Optical system, imaging device, and movable platform |
| CN114280762A (en) * | 2022-03-04 | 2022-04-05 | 精微致远医疗科技(武汉)有限公司 | Be applied to miniature camera lens of pancreaticobiliary duct's miniature probe |
| CN117130166A (en) * | 2023-10-26 | 2023-11-28 | 江西联昊光电有限公司 | Optical system and near-eye display device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107874733A (en) * | 2017-12-04 | 2018-04-06 | 中山市众盈光学有限公司 | A kind of small-bore endoscope optical system |
| CN107874733B (en) * | 2017-12-04 | 2024-03-22 | 中山市众盈光学有限公司 | Small-caliber endoscope optical system |
| CN113490877A (en) * | 2020-07-31 | 2021-10-08 | 深圳市大疆创新科技有限公司 | Optical system, imaging device, and movable platform |
| CN114280762A (en) * | 2022-03-04 | 2022-04-05 | 精微致远医疗科技(武汉)有限公司 | Be applied to miniature camera lens of pancreaticobiliary duct's miniature probe |
| CN114280762B (en) * | 2022-03-04 | 2022-05-27 | 精微致远医疗科技(武汉)有限公司 | Be applied to miniature camera lens of pancreaticobiliary duct's miniature probe |
| CN117130166A (en) * | 2023-10-26 | 2023-11-28 | 江西联昊光电有限公司 | Optical system and near-eye display device |
| CN117130166B (en) * | 2023-10-26 | 2024-03-15 | 江西联昊光电有限公司 | Optical system and near-eye display device |
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| Publication number | Publication date |
|---|---|
| CN106842547B (en) | 2023-04-28 |
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