CN207636835U - Optical system and optical device - Google Patents
Optical system and optical device Download PDFInfo
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- CN207636835U CN207636835U CN201721140222.9U CN201721140222U CN207636835U CN 207636835 U CN207636835 U CN 207636835U CN 201721140222 U CN201721140222 U CN 201721140222U CN 207636835 U CN207636835 U CN 207636835U
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Abstract
The utility model provides a kind of optical system, configures in order from the object side to image side：Pre-group lens group, aperture diaphragm and rear group's lens group；Group's lens group at least configures a piece of positive lens L closest to the object side in the rearrp, satisfy the following conditional expression：υrp＜ 25 and Δ θrp＞ 0.015, wherein F indicates the focal length of the optical system, FfIndicate the focal length of the pre-group lens group, FrThe focal length of group's lens group, υ after indicating describedrpWith Δ θrpIndicate that Abbe number and the partial dispersion ratio of the positive lens Lrp materials are poor respectively.The utility model additionally provides a kind of optical device.The optical system has the advantages that big field angle, long rear cut-off distance, imaging performance are outstanding.
Description
Technical field
The utility model belongs to optical technical field, and in particular to optical system and optical device.
Background technology
In recent years, for image pick up equipment (such as video camera) camera optical system and set for image projection
For the so-called wide of the image pickup and image projection ability in the projection optical system of (such as projecting apparatus), with big field range
Angle optical system is by widespread demand.In lens group of the object side configuration with negative power, in image side, configuration has positive light coke saturating
The optical system of microscope group, commonly known as reversed telescopic system (Retro-Focus system), since it is with focal length
It is short, it the features such as field angle is big, and rear cut-off distance is long, is well known as common wide-angle optics.
Due to close to the focal power of the pre-group lens group of object side being negative in aperture diaphragm, and in the rear group of aperture diaphragm image space
The focal power of lens group is just to cause the configuration of reversed telescopic system focal power in asymmetry, makes the picture of front and back group's lens group
Difference can not be offset, and cause all aberrations of system to become larger, the deterioration of imaging performance.Especially in reversed telescopic system, due to preceding
The negative direction distortion of group's lens group is overlapped mutually afterwards, causes barrel distortion, is influenced on image quality very big.Therefore, generally having
There is lens group of the configuration with positive light coke between the lens group of negative power and aperture diaphragm, by the distortion for introducing positive direction
To reduce distortion aberration.However in order to which the light for generating wide-angle is turned back, superfluous positive light coke is generally required, causes pre-group saturating
Microscope group has positive focal power, and the ratio chromatism, of a large amount of positive directions is introduced in optical system, especially because second order spectrum
Undercorrection causes g lines and F lines to generate positive direction offset to d lines, causes the low of system imaging performance.In order to reduce positive direction
Ratio chromatism, the glass material of low dispersion and high unusual part dispersion ratio, Neng Gou are introduced in the lens group of negative power
Reduce the ratio chromatism, between g lines and F lines while correcting the ratio chromatism, between C lines and F lines, meets the imaging of optical system
It is required that but since the refractive index of such glass material is too low, easily causing the undercorrection for all aberrations that spherical aberration is representative, making
At system performance degradation.
Utility model content
In the utility model, in order to eliminate above-mentioned problem of the prior art point, its purpose is to provide a kind of aberration and matches
Five aberration of Dare can be satisfactorily corrected, and the optical system with excellent imaging performance and the optics with the optical system are set
It is standby.
The utility model provides a kind of optical system, is configured in order pre-group lens group, aperture light from the object side to image side
Late and rear group's lens group, in the rear group's lens group at least configure a piece of positive lens Lr closest to the object sidep, meet following item
Part formula
υ rp ＜ 25 (1b), and
Δθrp＞ 0.015 (1c),
Wherein：F indicates the focal length of the optical system, FfIndicate the focal length of the pre-group lens group, FrGroup after indicating described
The focal length of lens group, υrpWith Δ θrpThe positive lens L is indicated respectivelyrpAbbe number and the partial dispersion ratio of glass material are poor.Glass
Material Abbe number υdWith partial dispersion ratio θgFDefinition be：
With
Wherein：ng,nF,nd,nCRespectively wavelength g lines (435.8nm), F lines (486.1nm), d lines (587.6nm), C lines
The refractive index of glass material when (656.3nm).The Abbe number of general glass material with partial dispersion ratio inversely, relationship
Formula is expressed as：
ΔgF=-1.61783 × 10-3 × υd+0.64146。
And when material is there are when anomalous dispersion characteristic, part aberration than value and glass figure between the normal line drawn
Difference be referred to as partial dispersion than poor Δ θgF, relational expression is expressed as：
ΔθgF=θgF+1.61783×10-3×υd-0.64146。
Conditional (1a) is saturating by the pre-group lens group of reasonable set aperture diaphragm object side and the rear group of aperture diaphragm image space
The image space principal point of optical system can easily be located at closest to the image side of image space lens, realize full light by the focal power of microscope group
The focal length of system is more shorter than the distance closest to image space lens to image planes, and system is made to meet to field angle and rear cut-off distance
It is required that.It, can be with image height since the focal power for the pre-group lens group for defining aperture diaphragm object side changes in a certain range
Increase so that g lines is deviated towards negative direction in image planes, reduce the ratio chromatism, between g lines and F lines.When less-than condition formula (1a)
When lower limit, the focal power of front and back group's lens group is too small, is unfavorable for the cripetura of optical system overall length.It is upper when greater than condition formula (1a)
In limited time, then the focal power of front and back group's lens group is excessive, is unfavorable for aberration correction, causes the imaging performance of whole system low.
But conditional (1a) also be easy to cause the increase of the chromatism of position between g lines and F lines, is unfavorable for center imaging
Can, therefore the positive lens L that conditional (1b) and (1c) pass through reasonable set aperture diaphragm image siderpAbbe number and partial dispersion ratio
The chromatism of position of optical system is satisfactorily corrected in difference.
When conditional (1b) and (1c) exceed setting range, the Abbe number of positive lens is excessive, and unusual part dispersion ratio is poor
It is too small, then to the undercorrection of chromatism of position, cause optical system center imaging performance low.
Preferably, it is at least configured closest to the image side in the pre-group lens group a piece of with positive lens Lfp, the lens
The refractive index and Abbe number of material use n respectivelyfpAnd vfpIt indicates, satisfies the following conditional expression：
1.65 ＜ nfp＜ 1.76 (2a), and
25 ＜ vfp＜ 35 (2b).
Conditional (2a) and (2b), will by the refractive index and Abbe number of reasonable set aperture diaphragm object side positive lens material
Chromatism of position and the ratio chromatism, control of optical system are in a certain range.If be more than the upper limit of formula (2a), just thoroughly
The focal power of mirror is excessive, and ratio chromatism, is moved to positive direction, causes the undercorrection of ratio chromatism, periphery imaging performance low.
If be more than the lower limit of formula (2a), the focal power of positive lens is too small, distorts and is moved to negative direction, causes distortion correction not
Foot, periphery imaging performance are low.If be more than the upper limit of formula (2b), the dispersion of positive lens material is too small, causes position color
The undercorrection of difference, center imaging performance are low.If be more than the lower limit of formula (2b), the dispersion of positive lens material is excessive,
Cause the correction of chromatism of position superfluous, center imaging performance is low.
Preferably, the pre-group lens group meets conditional below：
Conditional (3), being capable of short focus easy to implement and long rear cut-off distance by the focal power of reasonable set pre-group lens group
Requirement.If be more than the lower limit of formula (3), the focal power of pre-group lens group is too small, then optical path length increases, and is unfavorable for optics
The miniaturization of system.If be more than the upper limit of formula (3), the focal power of pre-group lens group is excessive, then generating aberration can not be rearward
Group's lens group correction, system imaging degraded performance.
Preferably, it in the optical system of the utility model, is configured in order from the object side to the image side：With negative light
First lens group of focal power, the second lens group with positive light coke and the third lens group with positive light coke, were focusing
The third lens group described in journey are moved along optical axis, and first lens group and second lens group are consolidated relative to image planes
It is fixed.
The optical texture while ensureing entrance pupil position, reduces focusing machine without mobile aperture diaphragm in focussing process
The load of tool structure is conducive to optical system and the miniaturization and lightweight with the optical system equipment.
Preferably, the third lens group at least configures a piece of positive lens, the positive lens material of the third lens group Ah
Shellfish number average value and partial dispersion use AVE (υ respectively than difference average valueL3P) and AVE (ΔsL3P) indicate, it satisfies the following conditional expression：
AVE(υL3P)>60 (4a), and
AVE(ΔθL3P)>0.015 (4b)。
The Abbe number and partial dispersion that conditional (4a) and (4b) pass through positive lens glass material in reasonable set focusing group
Than difference, the chromatism of position of optical system and ratio chromatism, are controlled in a certain range.If be more than the lower limit of formula (4a),
The dispersion of positive lens is excessive, and C lines and F lines are big relative to the variable quantity of d lines in focussing process, cause optical system imaging performance
Lowly.If be more than the lower limit of formula (4b), the partial dispersion of positive lens than too small, focusing by second order spectrum undercorrection
G lines change greatly in journey, cause system imaging degraded performance.
Preferably, first lens group continuously configures at least two panels negative lens from an object side, the negative lens material Ah
The average value of shellfish number and the summation of partial dispersion difference ratio use AVE (υ respectivelyL1N) and SUM (Δ θL1N) indicate, meet the following conditions
Formula：
40<AVE(UL1N)<60 (5a), and
SUM(ΔθL1N)<0.00 (5b)。
The Abbe number and partial dispersion that conditional (5a) and (5b) pass through negative lens material in the first lens group of reasonable set
Than difference, the chromatism of position of optical system and ratio chromatism, are controlled in a certain range.If be more than the upper limit of formula (5a),
Then the dispersion of negative lens is too small, then the undercorrection of ratio chromatism, system imaging degraded performance.If more than the lower limit of formula (5a)
When, then the dispersion of negative lens is excessive, then the correction of ratio chromatism, is superfluous, system imaging degraded performance.If more than formula (5b)
When the upper limit, than excessive, then the chromatism of position of g lines moves the partial dispersion of negative lens material to positive direction, causes center imaging
It can be low.
Preferably, the focal power of the third lens group satisfies the following conditional expression：
Wherein, F3Indicate the focal length of the third lens group.
Conditional (6), being capable of short focus easy to implement and long rear cut-off distance by the focal power of reasonable set the third lens group
Requirement.If be more than the lower limit of formula (6), the focal power of focusing lens group is excessive, is unfavorable for growing under the premise of bigbore
The realization of rear cut-off distance cannot be satisfied the use of optical device.If be more than the upper limit of formula (6), the focal power of focusing lens group
It is too small, it is unfavorable for the miniaturization of optical system.
Preferably, described in the height of the main axis outside the axis of the lens of incident first lens group side closest to the object and incidence
The height of the main axis outside the axis of the lens of second lens group side closest to the object uses H respectively1And H2It indicates, satisfies the following conditional expression：
Conditional (7) by chief ray incident image height to first lens group and chief ray be emitted image height carry out it is reasonable
Setting can ensure optical system in the requirement for meeting miniaturization and performance.If more than the upper limit of formula (7), chief ray goes out
Image height is too small, causes to distort excessive, imaging performance is low.If more than the lower limit of formula (7), chief ray is emitted image height mistake
Greatly, lens dimension is excessive, preponderance, is unfavorable for the miniaturization and lightweight of optical device.
The utility model additionally provides a kind of optical device, uses above-mentioned optical system.
Preferably, the optical device further includes that quickly return speculum, focusing glass, pentagon roof prism, eyepiece are saturating
Mirror and photosensitive surface.
Using technical solution provided by the utility model, compared with existing known technology, at least have following beneficial to effect
Fruit：Meet big field angle, other than the requirement of long rear cut-off distance, passes through the focal power and reasonable selection optics of reasonable set lens group
Glass material while barrel distortion, is corrected chromatism of position and ratio chromatism, possessed by correcting reverse telescopic system,
Reach high performance imaging performance.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the sectional view of optical system provided by the utility model.
Fig. 2 is the sectional view of the optical system of the utility model first embodiment.
Fig. 3 is all aberration curve figures of the optical system of the utility model first embodiment.
Fig. 4 is the sectional view of the optical system of the utility model second embodiment.
Fig. 5 is all aberration curve figures of the optical system of the utility model second embodiment.
Fig. 6 is the sectional view of the optical system of the utility model 3rd embodiment.
Fig. 7 is all aberration curve figures of the optical system of the utility model 3rd embodiment.
Fig. 8 shows a kind of structural schematic diagram of the primary clustering of optical device of the utility model.
Main element symbol description：
GfPre-group lens group；GrRear group's lens group；LfpPositive lens in pre-group lens group；LrpIn rear group's lens group
Positive lens；IMG- image surfaces；GL- parallel plates；SP- aperture diaphragms；G11- the first lens group；G12- the second lens group；G13-
The third lens group；G21- the first lens group；G22- the second lens group；G23The third lens group；G31- the first lens group；G32- the second
Lens group；G33The third lens group；1- optical systems；2- lens barrels；3- quickly returns to speculum；4- focusing glass；5- pentagons
Roof prism；6- eyepiece lens；7- photosensitive surfaces；10- photographic films；20- camera bodies.
Specific implementation mode
The optical system of the utility model is described in detail below based on attached drawing and with the optical device of the optical system.Thoroughly
In mirror data, refractive index and the value that focal length is d lines.Wherein, in optical lens related data, the unit of length is mm, will be omitted
Its unit is shown.
It should be noted that the symbol used in table and in being described below is as follows：
“Si" indicate surface number；“Ri" it is radius of curvature；“di" it is axis upper table between i-th of surface and i+1 surface
Identity distance from；“nd" it is refractive index；“νd" it is Abbe number；" Fno " is F numbers；" ω " is angle of half field-of view.About surface number, " ASP " table
Show that the surface is aspherical, and about radius of curvature, " ∞ " indicates that the surface is plane.
The lens used in Numerical examples include some lens for having aspherical lens surface.Wherein in the side of optical axis
It is indicated to the middle distance (i.e., rise amount Sag amount) apart from surface vertices by x；In the height on optical axis direction
(i.e., diameter is high) is indicated by " y "；Paraxial curvature (the i.e., inverse of radius of curvature) on the vertex of lens is indicated by " c "；Taper is normal
Number is indicated by " k "；And the four, the six, the 8th, the tenth grades of asphericity coefficients have " C respectively4”、“C6”、“C8" and " C10" indicate,
Aspherical shape is defined by following formula：
As shown in Figure 1, a kind of optical system, configures in order from the object side to image side：Pre-group lens group Gf, aperture diaphragm SP and
Group's lens group G afterwardsr；In rear group's lens group GrA piece of positive lens L is at least configured closest to the object siderp, satisfy the following conditional expression：
υrp＜ 25, and
Δθrp＞ 0.015, wherein：F indicates the focal length of the optical system, FfIndicate pre-group lens group GfFocal length, FrIt indicates
Group's lens group G afterwardsrFocal length, υrpWith Δ θrpPositive lens L is indicated respectivelyrpAbbe number and the partial dispersion ratio of material are poor.
Embodiment 1
As shown in Fig. 2, a kind of optical system, is configured in order pre-group lens group G from the object side to image sidef, aperture diaphragm SP
With rear group's lens group Gr, a piece of positive lens L is configured in the rear sides closest to the object group's lens group Grrp, in pre-group lens group GfIt is closest
Image side configures a piece of positive lens Lfp。G11For the first lens group with negative power；G12For the second lens with positive light coke
Group；G13For the third lens group with positive light coke.The third lens group G in focussing process13It is moved along optical axis, first thoroughly
Microscope group G11With the second lens group G12It is fixed relative to image planes.In the present embodiment the calculated value of correlated condition formula referring particularly to
Table 7.
Rear group's lens group G is arranged in by a kind of parallel plate GL of filter configurationrBetween image surface IMG.After cut
Away from being from GrImage side surface to the distance of image surface IMG, wherein parallel glass plates GL is transformed to air.
Hereinafter, showing the various numeric datas of the optical system about embodiment 1.
The master data of optical system：ω=114.4 ° optical system focal length f=14.42mm, Fno=2.81,2.
Table 1 lists the sphere data of the optical system of first embodiment
Table 2 lists the aspherical surface data of the optical system of first embodiment
Embodiment 2
As shown in figure 4, a kind of optical system, is configured in order pre-group lens group G from the object side to image sidef, aperture diaphragm SP
With rear group's lens group Gr, a piece of positive lens L is configured in the rear sides closest to the object group's lens group Grrp, in pre-group lens group GfIt is closest
Image side configures a piece of positive lens Lfp。G21For the first lens group with negative power；G22For the second lens with positive light coke
Group；G23For the third lens group with positive light coke.The third lens group G in focussing process23It is moved along optical axis, first thoroughly
Microscope group G21With the second lens group G22It is fixed relative to image planes.In the present embodiment the calculated value of correlated condition formula referring particularly to
Table 7.
Rear group's lens group G is arranged in by a kind of parallel plate GL of filter configurationrBetween image surface IMG.After cut
Away from being from GrImage side surface to the distance of image surface IMG, wherein parallel glass plates GL is transformed to air.
Hereinafter, showing the various numeric datas of the optical system about embodiment 2.
The master data of optical system：ω=114.3 ° optical system focal length f=14.42mm, Fno=2.79,2.
Table 3 lists the sphere data of the optical system of second embodiment
Table 4 lists the aspherical surface data of the optical system of second embodiment
Embodiment 3
As shown in fig. 6, a kind of optical system, is configured in order pre-group lens group G from the object side to image sidef, aperture diaphragm SP
With rear group's lens group Gr, a piece of positive lens L is configured in the rear sides closest to the object group's lens group Grrp, in pre-group lens group GfIt is closest
Image side configures a piece of positive lens Lfp。G31For the first lens group with negative power；G32For the second lens with positive light coke
Group；G33For the third lens group with positive light coke.The third lens group G in focussing process33It is moved along optical axis, first thoroughly
Microscope group G31With the second lens group G32It is fixed relative to image planes.In the present embodiment the calculated value of correlated condition formula referring particularly to
Table 7.
Rear group's lens group G is arranged in by a kind of parallel plate GL of filter configurationrBetween image surface IMG.After cut
Away from being from GrImage side surface to the distance of image surface IMG, wherein parallel glass plates GL is transformed to air.
Hereinafter, showing the various numeric datas of the optical system about embodiment 3.
The master data of optical system：ω=114.6 ° optical system focal length f=14.42mm, Fno=2.82,2.
Table 5 lists the sphere data of the optical system of 3rd embodiment
Table 6 lists the aspherical surface data of the optical system of 3rd embodiment
When Fig. 3, Fig. 5 and Fig. 7 are illustrated in focus for infinity (β=0.0), respectively according to first embodiment,
All aberration diagrams of the optical system of two embodiments and 3rd embodiment.In the schematic diagram of spherical aberration, solid line, dotted line and short stroke
Line is represented in d lines (wavelength 587.6nm), c lines (wavelength 656.3nm), the spherical aberration of g lines (wavelength 435.8nm)；In addition,
In the schematic diagram for illustrating astigmatism, solid line S indicates that the value in sagittal image surface, dotted line M indicate the value in meridianal image surface.It is related each
The above description of kind aberration curve figure is identical as other examples, and omits repeated explanation.The optical system in Fig. 3, Fig. 5 and Fig. 7
The spherical aberration of system is all in 0.4mm or so, and astigmatism is all in 0.4mm or so, and distortion is all 5% or so, and aberration is all on the left sides 0.1mm
The right side, imaging effect show outstanding.
Table 7 is the list of the conditional calculated value of each embodiment.
It should be noted that the design parameter in above table was merely an illustrative, the parameters of each lens be not limited to by
Value shown by above-mentioned each numerical example, may be used other values, can reach similar technique effect.
Next, each quilt that will be described with reference to figure 8 in the optical system wherein provided to embodiment 3 according to embodiment 1
Example applied to optical device (such as single lens reflex camera).Fig. 8 shows single lens reflex camera
The schematic diagram of primary clustering.Single lens reflex camera includes：Photographic film 10 and camera body 20.Photographic film 10 wraps
It includes：Optical system 1 and lens barrel 2.
Optical system 1 is kept by the lens barrel 2 as holding member.Camera body 20 includes：Mirror for taking photograph will be come from
The quick focusing for returning to speculum 3 and being arranged at the image forming position of photographic film 10 that first 10 light beam reflects upwards
Screen 4.In addition, camera body 20 further includes the pentagon roof prism 5 that the inverted image formed on focusing glass 4 is converted into erect image,
The eyepiece lens 6 of the erect image of amplification is formed, (photo-electric conversion element, such as ccd sensor or CMOS sense solid state image sensor
Device) or silver halide film formed photosensitive surface 7.During photograph, quickly returns to speculum 3 and withdrawn from light path, and by
Image is formed on photosensitive surface 7 by camera gun 10.It can also be applied according to the optical system of each exemplary embodiment
In projecting apparatus, TV cameras.
Although described above is the principles of the present invention and specific implementation mode, in the upper of the utility model
It states under introduction, those skilled in the art can carry out various improvement and deformations on the basis of the above embodiments, and these are improved
Or deformation fall it is within the protection scope of the present utility model.It will be understood by those skilled in the art that above-mentioned specific descriptions are
In order to explain the purpose of this utility model, it is not intended to limit the utility model.The scope of protection of the utility model is wanted by right
It asks and its equivalent limits.
Claims (10)
1. a kind of optical system, which is characterized in that configure in order from the object side to image side：Pre-group lens group, aperture diaphragm and rear group
Lens group；Group's lens group at least configures a piece of positive lens L closest to the object side in the rearrp, satisfy the following conditional expression：
υrp＜ 25, and
Δθrp＞ 0.015, wherein：F indicates the focal length of the optical system, FfIndicate the focal length of the pre-group lens group, FrIt indicates
The focal length of group's lens group, υ after describedrpWith Δ θrpThe positive lens L is indicated respectivelyrpAbbe number and the partial dispersion ratio of material are poor.
2. optical system according to claim 1, which is characterized in that the pre-group lens group closest to the image side extremely
A piece of positive lens L is configured lessfp, the positive lens LfpThe refractive index and Abbe number of material use n respectivelyfpAnd vfpIt indicates, meets following
Conditional：
1.65<nfp<1.76 and
25<vfp<35。
3. optical system according to claim 1, which is characterized in that the pre-group lens group satisfies the following conditional expression：
4. optical system according to claim 1, which is characterized in that configured in order from the object side to the image side：Tool
There are the first lens group of negative power, the second lens group with positive light coke and the third lens group with positive light coke,
The third lens group described in focussing process are moved along optical axis, and first lens group and second lens group are relative to image planes
It is fixed.
5. optical system according to claim 4, which is characterized in that the third lens group at least configures a piece of just saturating
Mirror, the Abbe number average value and partial dispersion of the positive lens material of the third lens group use AVE (υ respectively than difference average valueL3P) and
AVE(ΔθL3P) indicate, it satisfies the following conditional expression：
AVE(υL3P)>60, and
AVE(ΔθL3P)>0.015。
6. optical system according to claim 4, which is characterized in that first lens group continuously configure from an object side to
Few two panels negative lens, the average value of the Abbe number of the negative lens material and the summation of part aberration ratio use AVE (υ respectivelyL1N) and
SUM(ΔθL1N) indicate, it satisfies the following conditional expression：
40<AVE(υL1N)<60, and
SUM(ΔθL1N)<0.00。
7. optical system according to claim 4, which is characterized in that the third lens group satisfies the following conditional expression：
Wherein, F3Indicate the focal length of the third lens group.
8. optical system according to claim 4, which is characterized in that incident first lens group side closest to the object it is saturating
The height point of the main axis outside the axis of the lens of the height of the main axis outside the axis of mirror and incident second lens group side closest to the object
H is not used1And H2It indicates, satisfies the following conditional expression：
9. a kind of optical device, including according to claim 1-8 any one of them optical systems.
10. optical device according to claim 9, which is characterized in that the optical device further includes that quick return is reflected
Mirror, focusing glass, pentagon roof prism, eyepiece lens and photosensitive surface.
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| CN201721140222.9U CN207636835U (en) | 2017-09-07 | 2017-09-07 | Optical system and optical device |
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| CN201721140222.9U CN207636835U (en) | 2017-09-07 | 2017-09-07 | Optical system and optical device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390351A (en) * | 2017-09-07 | 2017-11-24 | 深圳市永诺摄影器材股份有限公司 | Optical system and optical device |
| CN110398825A (en) * | 2019-07-18 | 2019-11-01 | 深圳市永诺摄影器材股份有限公司 | A kind of optical imaging system and optical device |
| 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 |
-
2017
- 2017-09-07 CN CN201721140222.9U patent/CN207636835U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390351A (en) * | 2017-09-07 | 2017-11-24 | 深圳市永诺摄影器材股份有限公司 | Optical system and optical device |
| CN107390351B (en) * | 2017-09-07 | 2023-04-11 | 深圳市永诺摄影器材股份有限公司 | Optical system and optical apparatus |
| CN110398825A (en) * | 2019-07-18 | 2019-11-01 | 深圳市永诺摄影器材股份有限公司 | A kind of optical imaging system and optical device |
| 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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