CN107907974A - A kind of double-view field camera lens - Google Patents
A kind of double-view field camera lens Download PDFInfo
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- CN107907974A CN107907974A CN201711401768.XA CN201711401768A CN107907974A CN 107907974 A CN107907974 A CN 107907974A CN 201711401768 A CN201711401768 A CN 201711401768A CN 107907974 A CN107907974 A CN 107907974A
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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
- G02B13/0065—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element having a beam-folding prism or mirror
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
Abstract
The invention discloses a kind of double-view field camera lens, including：Light path steering assembly, first the second lens group of lens group and visual field changeover module；The equivalent focal length of first lens group and the second lens group is unequal；Light path steering assembly is used to receive the incident light of the first visual field and reflects the incident light of the first visual field to the first lens group；Visual field changeover module is used to be inserted into light path when the first visual field and the second visual field switch, and the converging light to the visual field after the switching of reception is reflected.The lens group visual field different to two kinds not waited using two equivalent focal lengths is imaged, and without shared lens, the focal length of each lens group can be with independent design, and image quality need not compromise；When visual field switches using insertion visual field changeover module reflex, therefore only need to consider the depth of parallelism of its optical axis, it is not necessary to consider concentricity, reduce the adjustment difficulty of camera lens.
Description
Technical field
The present invention relates to technical field of imaging, espespecially a kind of double-view field camera lens.
Background technology
Upgrading with field of video monitoring is continued to optimize, thermal imaging is in fields such as night vision, fire prevention, monitoring temperatures
Unique advantage is increasingly recognized, and imaging lens are also constantly updating form as the critical elements in thermal imaging system, with
Meet more and more diversified use demand.Wherein, double-view field camera lens can meet that large scene is searched for, and quickly be put (in 1 second)
The demand of big suspicious object, takes precautions against on border and field of forest fire prevention is well received by the public always.
As shown in Figure 1, be it is current used in double-view field camera lens structure diagram, from wide-angular field's (short focus) to length
It is in a manner of increasing a switching microscope group, so as to can change after the switching microscope group is increased whole during burnt visual field conversion
The focal power of optical system, realizes the change from a focal length to another focal length.This double-view field camera lens are compact-sized, switching
Rapidly, utilization rate is very high at this stage.However, the double-view field camera lens of said structure just need to consider two Jiao at the beginning of design
The focal power distribution of each microscope group away under, this can make scheme complicate, increase processing and manufacturing cost；Also, consider two mirrors
Head compatibility, one of camera lens will necessarily compromise in the image quality of some focal length, and image quality is bad.In addition regarded in change
It is stringent, it is necessary to take into account multiple ginsengs such as the depth of parallelism, microscope group interval, microscope group concentricity at the same time to adding the status requirement of eyeglass during field
Number, therefore, camera lens adjustment difficulty is big.
The content of the invention
The embodiment of the present invention provides a kind of double-view field camera lens, to reduce camera lens adjustment difficulty, improves image quality.
The embodiment of the present invention provides a kind of double-view field camera lens, including：Light path steering assembly, the first lens group, the second lens
Group and visual field changeover module；Wherein,
First lens group, for carrying out being converged to picture to the incident light of the first visual field；
Second lens group, for carrying out being converged to picture to the incident light of the second visual field；
The equivalent focal length of first lens group and second lens group is unequal；
The light path steering assembly, for receiving the incident light of the first visual field and by the incident light of first visual field to institute
State the reflection of the first lens group；
The visual field changeover module is located at first lens group and deviates from the side of the light path steering assembly, and is located at institute
State the image space side of the second lens group；The visual field changeover module, for right in first visual field and second visual field
The converging light of visual field after one of switching is reflected；
The optical system being imaged to first visual field and the optical system being imaged to second visual field
Image space focal plane overlap.
In a kind of possible implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, the image space
Focal plane and the primary optical axis of first lens group are parallel to each other；
The visual field changeover module, for being inserted into when second visual field is switched to first visual field in light path,
The converging light that first lens group is emitted is reflexed into the image space focal plane.
In a kind of possible implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, the image space
Focal plane and the primary optical axis of second lens group are parallel to each other；
The visual field changeover module, for being inserted into when first visual field is switched to second visual field in light path,
The converging light that second lens group is emitted is reflexed into the image space focal plane.
In a kind of possible implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, described first
Lens group includes：The first lens set gradually along the light incident direction of first visual field, the second lens and the 3rd lens；
First lens and the 3rd power of lens is just, second power of lens are negative.
In a kind of possible implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, described first
Lens are non-spherical lens.
In a kind of possible implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, described second
Lens group includes：The 4th lens set gradually along the light incident direction of second visual field, the 5th lens and the 6th lens；
4th lens and the 6th power of lens is just, the 5th power of lens are negative.
In a kind of possible implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, the described 4th
Lens are non-spherical lens.
In a kind of possible implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, the light path
Steering assembly is one kind or combination in plane mirror, curved reflector or prism.
In a kind of possible implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, the visual field
Changeover module is one kind or combination in plane mirror, curved reflector or prism.
In a kind of possible implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, described first
Lens material in lens group and second lens group is germanium system glass, silicon systems glass or chalcogenide glass.
The present invention has the beneficial effect that：
Double-view field camera lens provided in an embodiment of the present invention, including：Light path steering assembly, the first lens group, the second lens group
And visual field changeover module；Wherein, the first lens group, for carrying out being converged to picture to the incident light of the first visual field；Second lens
Group, for carrying out being converged to picture to the incident light of the second visual field；The equivalent focal length of first lens group and the second lens group is unequal；
Light path steering assembly, for receiving the incident light of the first visual field and reflecting the incident light of the first visual field to the first lens group；Depending on
Field changeover module is located at the side that the first lens group deviates from light path steering assembly, and positioned at the image space side of the second lens group；Depending on
Field changeover module, reflects for the converging light to the visual field after one of switching in the first visual field and the second visual field；
The optical system and the image space focal plane for the optical system being imaged to the second visual field being imaged to the first visual field are mutual
Overlap.It is imaged using the two unequal lens group of equivalent focal length visual fields different to two kinds, the lens not shared, because
This two lens groups are independent of each other, and the focal length of each lens corresponding to two visual fields be able to need not be compromised with independent design, image quality,
The image quality of two visual fields is more preferable；When carrying out visual field switching using insertion visual field changeover module reflex, therefore
Only need to consider the depth of parallelism of its optical axis, it is not necessary to consider concentricity, reduce the adjustment difficulty of camera lens.
Brief description of the drawings
Fig. 1 is the structure diagram of double-view field camera lens of the prior art；
Fig. 2 is one of structure diagram of double-view field camera lens provided in an embodiment of the present invention；
Fig. 3 a are one of fractionation index path of double-view field camera lens in Fig. 2；
Fig. 3 b are the two of the fractionation index path of the double-view field camera lens in Fig. 2；
Fig. 4 is the second structural representation of double-view field camera lens provided in an embodiment of the present invention；
Fig. 5 is the third structural representation of double-view field camera lens provided in an embodiment of the present invention；
Fig. 6 is the four of the structure diagram of double-view field camera lens provided in an embodiment of the present invention；
Fig. 7 is the structure diagram of more visual field camera lenses provided in an embodiment of the present invention.
Embodiment
For problems of the prior art, the embodiment of the present invention provides a kind of double-view field camera lens, to reduce camera lens
Adjustment difficulty, improves image quality.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with attached drawing and implementation
The present invention will be further described for example.However, example embodiment can be implemented in a variety of forms, and it is not understood as limited to
Embodiment set forth herein；On the contrary, these embodiments are provided so that the present invention more comprehensively and completely, and by example embodiment party
The design of formula is comprehensively communicated to those skilled in the art.
It should be noted that detail is elaborated in the following description in order to fully understand the present invention.But this hair
Bright to be implemented with a variety of different from other manner described here, those skilled in the art can be without prejudice in the present invention
Similar popularization is done in the case of culvert.Therefore the limitation of the invention from following public embodiment.
Below in conjunction with the accompanying drawings, to double-view field camera lens provided in an embodiment of the present invention.Wherein, in attached drawing the thickness of each component and
Shape does not reflect the actual proportions of display device, and purpose is schematically illustrate present invention.
Double-view field camera lens provided in an embodiment of the present invention, as shown in Fig. 2, including：Light path steering assembly 21, the first lens group
22nd, 23 and second lens group 24 of visual field changeover module.
In the specific implementation, the first lens group 21, for carrying out being converged to picture to the incident light of the first visual field View1；
Second lens group 24, for carrying out being converged to picture to the incident light of the second visual field View2.
Wherein, the equivalent focal length of the first lens group 21 and the second lens group 24 is unequal.
Further, light path steering assembly 21, for receiving the incident light of the first visual field View1 and by the first visual field
The incident light of View1 is reflected to the first lens group 22；
Visual field changeover module 23 is located at the first lens group 22 and deviates from the side of light path steering assembly 21, and is located at the second lens
The image space side of group 24；Visual field changeover module 23, in the first visual field View1 and the second visual field View2 to one of which
Converging light after visual field switching is reflected.
In embodiments of the present invention, the first visual field View1 is imaged optical system (by taking structure shown in Fig. 2 as an example,
The optical system being imaged to the first visual field is light path steering assembly 21, the first lens group 22 and visual field changeover module 23) with
And the image space focal plane FP for the optical system (the second lens group 24) being imaged to the second visual field View2 overlaps.
In practical applications, the equivalent focal length of the first above-mentioned lens group 22 and the second lens group 24 is unequal, Ke Yifen
Imaging lens not as two different visual fields, roll over light path by light path steering assembly 21 and visual field changeover module 23
Turn, when carrying out visual field switching using insertion visual field changeover module reflex, therefore only need to consider putting down for its optical axis
Row degree, it is not necessary to consider concentricity, reduce the adjustment difficulty of camera lens.By the insertion or removal that control visual field changeover module 23
The equivalent focal length of camera lens can be made choice, so as to fulfill switching visual field that is quick, stablizing.And the first lens group 22 and
Second lens group 24 separately as a visual field imaging lens, two all between the lens that do not share, therefore two lens groups
Be independent of each other, the focal length of each lens corresponding to two visual fields be able to need not be compromised with independent design, image quality, two visual fields into
As better quality.
It should be noted that the above-mentioned optical system being imaged to the first visual field is to be set gradually along key light direction of principal axis
Light path steering assembly 21, the first lens group 22 and visual field changeover module 23；The optical system being imaged to the second visual field is
Second lens group 24.The image space focal plane of the two optical systems overlaps, and refers to the convergence light of lens group by regarding
Image space after the changeover module of field is identical, due to the addition of visual field changeover module so that the biography of the light by lens group
Direction is broadcast to change.And the image space focal plane of two optical systems is arranged on to identical position, Image Acquisition can be facilitated
The image of two visual fields can be adopted in the setting of device, i.e., the position that image collecting device is arranged on to image space focal plane
Collection.
In the specific implementation, can be with according to the size of the equivalent focal length of above-mentioned the first lens group and the second lens group
Imaging lens group of the larger lens group of equivalent focal length as focal length visual field is selected, the less lens group of another equivalent focal length is then
Can be as the imaging lens group of wide-angular field's (short focus visual field).By taking the structure shown in Fig. 2 as an example, the first above-mentioned visual field View1
Can be focal length visual field, the second visual field View2 can be wide-angular field.So, above-mentioned visual field changeover module 23 is cut in wide-angular field
It is inserted into when changing to focal length visual field in light path so that the incident ray in focal length visual field is cut by light path steering assembly 21 and visual field
The reflex for changing component 23 is imaged in image space focal plane FP.
Specifically, index path as shown in Figure 3a and Figure 3b shows, the light path for the first visual field View1 imagings is former as shown in Figure 3a
Reason figure, the light of the first visual field View1 (focal length visual field) incides on light path steering assembly 21 first, by light path steering assembly 21
The incident light of first visual field View1 is reflexed into the first lens group 22, light is carried out by the first lens group 22 to be converged to picture, then
Visual field changeover module 23 is incided, is reflexed to light on image space focal plane FP by visual field changeover module 23.It is as shown in Figure 3b
The light path principle figure of second visual field View2 imagings, the light of the second visual field View2 (wide-angular field) are directly over the second lens group
24 are imaged, and finally adopt coke installation collection imaging by the image being arranged on image space focal plane FP.Two in structure shown in Fig. 2
A lens group with timesharing can be imaged two visual fields, and when the first visual field is imaged, the light of the second visual field cannot
Reach image space focal plane by visual field changeover module；And when the second visual field is imaged, the light of the first visual field cannot arrive
Up to image space focal plane.And above-mentioned first lens group and the second lens group do not have common lens, therefore need not be that
This imaging has been compromised.And in the focal length selection of two lens groups, it can be freely combined, and can be directed to single
The focal length of lens group carries out most rational optimization, reduces design difficulty.
In a kind of enforceable mode, as shown in Fig. 2, image space focal plane FP and the primary optical axis of the first lens group 22 are mutual
It is parallel；Then visual field changeover module 23, will for being inserted into when the second visual field View2 is switched to the first visual field View1 in light path
The converging light of first lens group 22 outgoing reflexes to image space focal plane FP.
In another enforceable mode, as shown in figure 4, focal plane FP and the primary optical axis of the second lens group 24 are mutually flat
OK；Then visual field changeover module 23, for being inserted into when the first visual field View1 is switched to the second visual field View2 in light path, by
The converging light of two lens groups 24 outgoing reflexes to image space focal plane FP.
In practical applications, the position of image space focal plane FP can be correspondingly set according to the position where image collecting device
Put, so as to place visual field changeover module using any of the above-described set-up mode.Visual field changeover module 23 both can be used for reflecting
First lens group, 22 emergent light, can be used for the emergent light of the second lens group 24 of reflection, does not limit herein.
In the specific implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, as shown in Figure 2 and Figure 4, first
Lens group 22 includes：The first the lens l1, the second lens l2 set gradually along the light incident direction of the first visual field View1 and
Three lens l3；Wherein, the focal power of the first lens l1 and the 3rd lens l3 is just, the focal power of the second lens l2 is negative.
In practical applications, the first above-mentioned lens l1, the second lens l2 and the 3rd lens l3 are according to such as Fig. 2 and Fig. 4
Shown structure setting can be equivalent to a convergent lens, for being imaged to the first visual field View1, set multiple lens combinations
Form can eliminate aberration, improve image quality.
Further, the first lens l1 in the first lens group 22 can be non-spherical lens.For example, the first lens l1 can be adopted
With symmetric aspheres lens, and other lens (the second lens l2 and the 3rd lens l3) use spherical lens.This is symmetrical non-
Spherical lens can improve astigmatism, coma and distortion, so as to further improve image quality.
In the specific implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, as shown in Figure 2 and Figure 4, second
Lens group 24 includes：The 4th lens l4 set gradually along the light incident direction of the second visual field View2, the 5th lens l5 and
Six lens l6；Wherein, the focal power of the 4th lens l4 and the 6th lens l6 is just, the focal power of the 5th lens l5 is negative.
Similarly, above-mentioned the 4th lens l4, the 5th lens l5 and the 6th lens l6 are according to as shown in Figure 2 and Figure 4
Structure setting can be equivalent to a convergent lens, for being imaged to the second visual field View2, set the form of multiple lens combinations
Aberration can be eliminated, improves image quality.
Further, the 4th lens l4 in the second lens group 24 can be non-spherical lens.For example, the 4th lens l4 can be adopted
With symmetric aspheres lens, and other lens (the 5th lens l5 and the 3rd lens l6) use spherical lens.This is symmetrical non-
Spherical lens can improve astigmatism, coma and distortion, so as to further improve image quality.
In the specific implementation, in above-mentioned double-view field camera lens provided in an embodiment of the present invention, light path steering assembly 21 can be
One kind or combination in plane mirror, curved reflector or prism.
Similarly, visual field changeover module 24 can be one kind or the combination in plane mirror, curved reflector or prism.
Wherein, curved reflector can be spherical reflector or free-form surface mirror；Prism can be right-angle prism etc..Using
Be conducive to simplify the adjustment to projection lens light path during monolithic plane mirror, it is only anti-with monolithic plane in embodiments of the present invention
Penetrate mirror to be illustrated as light path steering assembly 21 and visual field changeover module 24, can use in practical applications above-mentioned each
Speculum, prism or its combination of kind form carry out turning back for light path, do not limit herein.When use plane mirror is as light
When road steering assembly 21 and visual field changeover module 23, one end of plane mirror can connect fixation, and the other end can be according to need
To be rotated along fixing end, so that plane mirror is inserted into light path when imaging needs, and need not in imaging
When by being withdrawn from light path.
In above-mentioned double-view field camera lens provided in an embodiment of the present invention, in the first lens group 22 and the second lens group 24
Lens material can be germanium system glass, silicon systems glass or chalcogenide glass.No thermalization principle is mainly that use is insensitive to temperature change
Material makes lens so that lens deformation in the case of different operating temperatures is small, especially in long-wave band (such as infrared waves
Section) in the case of deflection is less, it can be applied to thermal imaging.In above-mentioned double-view field camera lens provided in an embodiment of the present invention, it can adopt
Eyeglass is made with chalcogenide glass, germanium system glass or silicon systems glass, and the eyeglass can set optional position in systems, according to
Optical plan difference selects.For example, shadow of the deformation of smallest size of lens for overall imaging system in imaging systems
Sound is larger, then can be made smallest size of lens of above-mentioned material.According to it is actually detected can be at -40~80 DEG C
In operating temperature range, focal plane relative displacement is less than 0.01mm, realizes no thermalization thermal imaging.Double vision in compared with the prior art
Two lens groups are used alone for two visual fields in field lens head, above-mentioned double-view field camera lens provided in an embodiment of the present invention, therefore only
Need to carry out no thermalized design respectively for single lens group, so as to reduce design difficulty, while improve into image quality
Amount.
As a kind of simple lens construction, as shown in figure 5, only with plane mirror as above-mentioned light path steering group
Part 21 and visual field changeover module 23, and only with monolithic convergent lens as the first above-mentioned lens group 22 and the second lens group
24.Principle is simple when being imaged using single element lens, easy to adjust, in the case of the focal length of two panels lens is unequal
Realize the requirement of double-view field imaging.But in application scenes, change the ginseng such as making material and curvature of single element lens
When number is to be not enough to make it have the aberration of the focal length of bigger and smaller, still need to make double vision field lens in the form of lens group
Head.In practical applications, it should form of lens is flexibly set according to being actually needed, is not limited herein.
In addition, in order to make the lens group being imaged to focal length visual field that there is the equivalent focal length of bigger, as shown in fig. 6, can
To increase by the 3rd lens group 25 in the front of light path steering assembly 21, the 3rd lens group 25 can be telescopic system etc..Due to
The front increase lens group of light path steering assembly 21, therefore to the essence of light path steering assembly (plane mirror as shown in Figure 6)
Degree requires higher, then in practical applications, it is also necessary to consider, the parameter for adjusting matched component of adaptability,
Do not limit herein.
Based on same inventive concept, the embodiment of the present invention also provides a kind of more visual field camera lenses, its structure is as shown in fig. 7, still
Illustrated using plane mirror as light path steering assembly and visual field changeover module, wherein, the simple lens in Fig. 7 is
The equivalent form of lens of microscope group, only replaces corresponding lens group with the first lens, the second lens, the 3rd lens for convenience of description
Into and explanation.
Lens construction shown in Fig. 7 can be imaged the visual field of three different focals.Carried out in the first visual field View1
During imaging, the plane mirror 21 ' of the second visual field can be rotated to withdraw from light path so that the first lens 22 are to the first visual field
The incident light of View1 is imaged, and imaging is reflexed to image space focal plane FP by plane mirror 23, by image collecting device
It is acquired；When the second visual field View2 is imaged, the plane mirror 21 of the first visual field can be rotated so that the first visual field
Light cannot incide plane mirror 23, and light is only assembled by imaging of second lens 22 ' to the second visual field View2 and is entered
Plane mirror 23 is mapped to, then imaging is reflexed into image space focal plane FP by plane mirror 23；When the 3rd visual field View3 is carried out
During imaging, can rotate plane mirror 23 be such that it withdraws from light path, so that the incident light of the 3rd visual field View3 is by the
The imaging of three lens 24 directly reaches image space focal plane FP.
The embodiment of the present invention only illustrates present inventive concept by taking more visual field camera lenses of three visual fields as an example, and structure according to the present invention
Think to set more light paths to realize that more visual field camera lenses of more visual field conversions fall within protection scope of the present invention.
Double-view field camera lens provided in an embodiment of the present invention, including：Light path steering assembly, the first lens group, the second lens group
And visual field changeover module；Wherein, the first lens group, for carrying out being converged to picture to the incident light of the first visual field；Second lens
Group, for carrying out being converged to picture to the incident light of the second visual field；The equivalent focal length of first lens group and the second lens group is unequal；
Light path steering assembly, for receiving the incident light of the first visual field and reflecting the incident light of the first visual field to the first lens group；Depending on
Field changeover module is located at the side that the first lens group deviates from light path steering assembly, and positioned at the image space side of the second lens group；Depending on
Field changeover module, reflects for the converging light to the visual field after one of switching in the first visual field and the second visual field；
The optical system and the image space focal plane for the optical system being imaged to the second visual field being imaged to the first visual field are mutual
Overlap.It is imaged using the two unequal lens group of equivalent focal length visual fields different to two kinds, the lens not shared, because
This two lens groups are independent of each other, and the focal length of each lens corresponding to two visual fields be able to need not be compromised with independent design, image quality,
The image quality of two visual fields is more preferable；When carrying out visual field switching using insertion visual field changeover module reflex, therefore
Only need to consider the depth of parallelism of its optical axis, it is not necessary to consider concentricity, reduce the adjustment difficulty of camera lens.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (10)
- A kind of 1. double-view field camera lens, it is characterised in that including：Light path steering assembly, the first lens group, the second lens group and regard Field changeover module；Wherein,First lens group, for carrying out being converged to picture to the incident light of the first visual field；Second lens group, for carrying out being converged to picture to the incident light of the second visual field；The equivalent focal length of first lens group and second lens group is unequal；The light path steering assembly, for receiving the incident light of the first visual field and by the incident light of first visual field to described the One lens group reflects；The visual field changeover module is located at the side that first lens group deviates from the light path steering assembly, and positioned at described the The image space side of two lens groups；The visual field changeover module, in first visual field and second visual field to wherein The converging light of visual field after one switching is reflected；The optical system and the picture for the optical system being imaged to second visual field being imaged to first visual field Square focal plane overlaps.
- 2. double-view field camera lens as claimed in claim 1, it is characterised in that the image space focal plane and first lens group Primary optical axis is parallel to each other；The visual field changeover module, for being inserted into when second visual field is switched to first visual field in light path, by institute The converging light for stating the outgoing of the first lens group reflexes to the image space focal plane.
- 3. double-view field camera lens as claimed in claim 1, it is characterised in that the image space focal plane and second lens group Primary optical axis is parallel to each other；The visual field changeover module, for being inserted into when first visual field is switched to second visual field in light path, by institute The converging light for stating the outgoing of the second lens group reflexes to the image space focal plane.
- 4. double-view field camera lens as claimed in claim 1, it is characterised in that first lens group includes：Regarded along described first The first lens that the light incident direction of field is set gradually, the second lens and the 3rd lens；First lens and the 3rd power of lens is just, second power of lens are negative.
- 5. double-view field camera lens as claimed in claim 4, it is characterised in that first lens are non-spherical lens.
- 6. double-view field camera lens as claimed in claim 1, it is characterised in that second lens group includes：Regarded along described second The 4th lens that the light incident direction of field is set gradually, the 5th lens and the 6th lens；4th lens and the 6th power of lens is just, the 5th power of lens are negative.
- 7. double-view field camera lens as claimed in claim 6, it is characterised in that the 4th lens are non-spherical lens.
- 8. such as claim 1-7 any one of them double-view field camera lens, it is characterised in that the light path steering assembly is anti-for plane Penetrate one kind in mirror, curved reflector or prism or combination.
- 9. such as claim 1-7 any one of them double-view field camera lens, it is characterised in that the visual field changeover module is anti-for plane Penetrate one kind in mirror, curved reflector or prism or combination.
- 10. such as claim 1-7 any one of them double-view field camera lens, it is characterised in that first lens group and described Lens material in second lens group is germanium system glass, silicon systems glass or chalcogenide glass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711401768.XA CN107907974A (en) | 2017-12-22 | 2017-12-22 | A kind of double-view field camera lens |
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| CN201711401768.XA CN107907974A (en) | 2017-12-22 | 2017-12-22 | A kind of double-view field camera lens |
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| CN110944108A (en) * | 2019-12-31 | 2020-03-31 | 华勤通讯技术有限公司 | Auxiliary shooting module and camera device with same |
| CN111751914A (en) * | 2020-06-27 | 2020-10-09 | 同济大学 | Common-caliber infrared free-form surface prism optical system with double wave bands and double view fields |
| CN111751915A (en) * | 2020-06-27 | 2020-10-09 | 同济大学 | Compact infrared viewfinder optical system based on free-form surface prism |
| CN112596228A (en) * | 2020-12-28 | 2021-04-02 | 北京光探科技有限公司 | Novel coaxial double-view-field telescope system |
| CN113412443A (en) * | 2018-12-11 | 2021-09-17 | 新加坡国立大学 | Assembly and method for switching visual angle direction of camera |
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