CN110515189A - Off-axis refraction-reflection type camera and electronic device - Google Patents
Off-axis refraction-reflection type camera and electronic device Download PDFInfo
- Publication number
- CN110515189A CN110515189A CN201910925962.0A CN201910925962A CN110515189A CN 110515189 A CN110515189 A CN 110515189A CN 201910925962 A CN201910925962 A CN 201910925962A CN 110515189 A CN110515189 A CN 110515189A
- Authority
- CN
- China
- Prior art keywords
- lens
- reflecting mirror
- reflection type
- type camera
- optical path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G02B13/007—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 the beam folding prism having at least one curved surface
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
- G02B17/0804—Catadioptric systems using two curved mirrors
- G02B17/0816—Catadioptric systems using two curved mirrors off-axis or unobscured systems in which not all of the mirrors share a common axis of rotational symmetry, e.g. at least one of the mirrors is warped, tilted or decentered with respect to the other elements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
This application discloses a kind of off-axis refraction-reflection type camera and electronic devices.Off-axis refraction-reflection type camera includes the first reflecting mirror, the second reflecting mirror, lens module and imaging detector.Incident ray is incident to the first reflecting mirror along the first optical path and is reflected by the first reflecting mirror, the second reflecting mirror being incident to along the second optical path and reflected by the second reflecting mirror by the incident ray after the reflection of the first reflecting mirror, lens module is incident to along third optical path by the incident ray after the reflection of the second reflecting mirror.Lens module is for will converge to imaging detector along the incident ray of third optical path incidence.Imaging detector is used to the light of convergence being converted to electric signal to be imaged.Wherein, the first optical path, the second optical path and third optical path are not overlapped.The off-axis refraction-reflection type camera and electronic device of the application embodiment reflect incident ray by the first reflecting mirror and the second reflecting mirror, realize the folding to optical path, the overall length of off-axis refraction-reflection type camera becomes smaller, and it is lightening to be advantageously implemented electronic device.
Description
Technical field
This application involves optical image technology field, in particular to a kind of off-axis refraction-reflection type camera and electronic device.
Background technique
With the development of technology, people require mobile phone pickup quality higher and higher, and on the basis of pickup quality
It is lightening easy to carry to pursue mobile phone.Since the total length of camera lens is directly proportional to lens focus, when lens focus increases
When, camera lens total length will necessarily be made to increase, and camera lens total length increases meeting so that the fuselage of whole mobile phone thickens, and is unfavorable for hand
Machine is lightening.
Summary of the invention
The application embodiment provides a kind of off-axis refraction-reflection type camera and electronic device.
The application embodiment provides a kind of off-axis refraction-reflection type camera, and the off-axis refraction-reflection type camera includes first anti-
Mirror, the second reflecting mirror, lens module and imaging detector are penetrated, incident ray is incident to first reflecting mirror simultaneously along the first optical path
It is reflected by first reflecting mirror, is incident to described second along the second optical path by the incident ray after first reflecting mirror reflection
Reflecting mirror is simultaneously reflected by second reflecting mirror, is incident to by the incident ray after second reflecting mirror reflection along third optical path
The lens module, the lens module is for will converge to the imaging detection along the incident ray of the third optical path incidence
Device, the imaging detector are used to the light of convergence being converted to electric signal to be imaged；Wherein, first optical path, described
Two optical paths and the third optical path are not overlapped.
In some embodiments, first optical path, second optical path and the third optical path combine to form Z-type light
Road.
In some embodiments, second reflecting mirror is located at the object side of first reflecting mirror.
In some embodiments, first reflecting mirror includes opposite the first object side and the first image side surface, described
Second reflecting mirror includes opposite the second object side and the second image side surface, first object side and the second image side surface phase
Right, first object side is for reflecting incident ray, and second image side surface is for reflecting by the first object offside reflection
Incident ray afterwards.
In some embodiments, first object side is any one in paraboloid, spherical surface, ellipsoid or hyperboloid
Kind；And/or second image side surface is any one in paraboloid, spherical surface, ellipsoid or hyperboloid.
In some embodiments, first object side is concave surface, and second image side surface is convex surface.
In some embodiments, first reflecting mirror and second reflecting mirror are for changing the off-axis refraction-reflection type
The focal length of camera.
In some embodiments, the off-axis refraction-reflection type camera meets conditional: K=f1/f2, D=| f1-f2 |,
Wherein, K is that the focal length of the off-axis refraction-reflection type camera changes multiple, and f1 is the focal length of first reflecting mirror, and f2 is described
The focal length of second reflecting mirror, D is between the first reflecting mirror prototype and two relatively paraboloidal centers of the second reflecting mirror prototype
Linear distance, wherein the first reflecting mirror prototype has complete paraboloidal before being first reflecting mirror cutting
Reflecting mirror, the second reflecting mirror prototype have complete paraboloidal reflecting mirror before being second reflecting mirror cutting.
In some embodiments, the lens module is saturating including the first lens, the second lens, third from object side to image side
Mirror and the 4th lens, the object side of first lens are convex surface, and the image side surface of first lens is convex surface；Described second thoroughly
The object side of mirror is concave surface, and the image side surface of second lens is concave surface；The object side of the third lens is concave surface, described the
The image side surface of three lens is convex surface；The object side of 4th lens is convex surface, and the image side surface of the 4th lens is concave surface.
The application embodiment also provides a kind of electronic device, and the electronic device includes shell and any of the above-described embodiment party
The off-axis refraction-reflection type camera of formula, the off-axis refraction-reflection type camera is in conjunction with the shell.
The off-axis refraction-reflection type camera and electronic device of the application embodiment pass through the first reflecting mirror and the second reflecting mirror
Incident ray is reflected, realizes the folding to optical path, the overall length of off-axis refraction-reflection type camera becomes smaller, and is advantageously implemented electronic device
It is lightening.In addition, the first optical path, the second optical path and third optical path are not overlapped, so that off-axis refraction-reflection type camera avoids in generation
The heart blocks phenomenon, leads to the problem of the imaging is not clear, improves image quality.
The additional aspect and advantage of the application embodiment will be set forth in part in the description, partially will be from following
Become obvious in description, or is recognized by the practice of the application.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the application can be from combining in description of the following accompanying drawings to embodiment
It will be apparent and be readily appreciated that, in which:
Fig. 1 is the schematic perspective view of a state of the electronic device of the application certain embodiments；
Fig. 2 is the schematic perspective view of another state of the electronic device of the application certain embodiments；
Fig. 3 is the structural schematic diagram of the off-axis refraction-reflection type camera of the application certain embodiments；
Fig. 4 is the optical planar circuit schematic diagram of the off-axis refraction-reflection type camera of the application certain embodiments；
Fig. 5 is the stereo optical path schematic diagram of the off-axis refraction-reflection type camera of the application certain embodiments；
Fig. 6 is the optical planar circuit schematic diagram of close coupled type camera；
Fig. 7 is that first reflecting mirror and the second reflecting mirror are flat when not cutting in off-axis refraction-reflection type camera shown in Fig. 4
Face light path schematic diagram；
Fig. 8 is the structural schematic diagram of the lens module of the application certain embodiments.
Specific embodiment
Presently filed embodiment is described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein identical
Or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining presently filed embodiment, and should not be understood as to this Shen
The limitation of embodiment please.
Also referring to Fig. 1 and Fig. 2, the electronic device 1000 of the application embodiment includes shell 200 and off-axis catadioptric
Formula camera 100.Electronic device 1000 can be mobile phone, tablet computer, laptop, game machine, smartwatch, intelligent hand
Ring, head show equipment, unmanned plane, digital camera (Digital Still Camera, DSC), digital video camera-recorder (Digital
Video Camcorder, DVC), the supervision equipments such as drive recorder and other have the electronics such as camera or Video Camera and set
It is standby.The application embodiment is illustrated so that electronic device 1000 is mobile phone as an example, it will be understood that electronic device 1000 it is specific
Form is not limited to mobile phone.
Shell 200 can be used as the installation carrier of the function element of electronic device 1000.Shell 200 can be function element
The protection such as dust-proof, shatter-resistant, waterproof is provided, function element can be display screen 202, processing chip 208, receiver etc..In this Shen
Please be in embodiment, shell 200 includes main body 204 and movable support 206, and movable support 206 under the drive of the drive can be with
It is moved relative to main body 204, such as movable support 206 can be slided relative to main body 204, to slide into main body 204 (such as Fig. 1 institute
Show) or from main body 204 skid off (as shown in Figure 2).Partial function element (such as display screen 202) may be mounted in main body 204,
Another part function element (such as off-axis refraction-reflection type camera 100, receiver) may be mounted on movable support 206, movably
The movement of bracket 206 can drive another part function element to retract in main body 204 or stretch out from main body 204.Certainly, Fig. 1 and
It is only a kind of concrete form citing to shell 200 shown in Fig. 2, should not be understood as the limitation to the shell 200 of the application.
Off-axis refraction-reflection type camera 100 is mounted on shell 200.Specifically, be mounted on can for off-axis refraction-reflection type camera 100
On dynamic bracket 206.User can trigger movable support 206 from main body 204 when needing using off-axis refraction-reflection type camera 100
In skid off to drive off-axis refraction-reflection type camera 100 to stretch out from main body 204；It is not needing using off-axis refraction-reflection type camera
When 100, movable support 206 can be triggered and slide into main body 204 to drive off-axis refraction-reflection type camera 100 to retract in main body 204.In
In other embodiments, light hole can be offered on shell 200, off-axis refraction-reflection type camera 100 is immovably arranged in
It is in shell 200 and corresponding with light hole, to acquire image information；Alternatively, display screen 202 can offer light hole, it is off-axis to roll over
The lower section of display screen 202 and corresponding with light hole is arranged in trans- camera 100, to acquire image information.
Referring to Fig. 3, off-axis refraction-reflection type camera 100 includes the first reflecting mirror 10, the second reflecting mirror 20, lens module 30
With imaging detector 40.
Incorporated by reference to Fig. 4, incident ray along the first optical path 111 be incident to the first reflecting mirror 10 and by the first reflecting mirror 10 it is anti-
It penetrates, be incident to the second reflecting mirror 20 along the second optical path 112 and reflected by second by the incident ray after the reflection of the first reflecting mirror 10
Mirror 20 reflects, and is incident to lens module 30 along third optical path 113 by the incident ray after the reflection of the second reflecting mirror 20.Lens module
30 for will converge to imaging detector 40 along the incident incident ray of third optical path 113.Imaging detector 40 will be for that will converge
Light be converted to electric signal to be imaged.Wherein, incorporated by reference to Fig. 5, using arbitrary point in scheming as origin O, to be parallel to camera lens mould
The direction of the optical axis of group 30 is X-axis, and with two axis of vertical X axis be Y and Z axis establishes coordinate system, and the first reflecting mirror 10 is flat in YZ
Projection in face has dislocation with projection of second reflecting mirror 20 in YZ plane, and lens module 30 and imaging detector 40 are flat in YZ
Projection in face also has dislocation with projection of first reflecting mirror 10 in YZ plane.First optical path 111, the second optical path 112 and
Three optical paths 113 are not overlapped.First optical path 111, the second optical path 112 and third optical path 113 may be combined to form Z-type optical path.It that is to say,
Central symmetry axis 4, central symmetry axis 5 and central symmetry axis 6 mentioned hereafter is crossed to form Z-shaped after the projection in X/Y plane
Shape.
First reflecting mirror 10 and the second reflecting mirror 20 constitute the reflective portion of off-axis refraction-reflection type camera 100, wherein first
The diameter of reflecting mirror 10 can be greater than the diameter of the second reflecting mirror 20, keep extraneous incident ray more complete by the first reflecting mirror 10
Reflect to face.Lens module 30 and imaging detector 40 constitute the refracted portion of off-axis refraction-reflection type camera 100.Off-axis refraction-reflection type
Camera 100 realizes the folding to optical path by reflective portion, and can zoom in or out the coke of off-axis refraction-reflection type camera 100
Away to realize that off-axis 100 total length of refraction-reflection type camera shortens, when being not provided with the first reflecting mirror and the second reflecting mirror relatively
Off-axis refraction-reflection type camera, off-axis refraction-reflection type camera 100 when being provided with the first reflecting mirror 10 and the second reflecting mirror 20
Focal length is zoomed in or out in multiple, so that off-axis refraction-reflection type camera 100 minimizes, it is easy for installation, and can satisfy more
Photographed scene demand.
Fig. 4 and Fig. 5 are please referred to, incident ray is successively incident to the first reflecting mirror 10, the second reflecting mirror 20 and lens module
30 and it is respectively formed the first optical path 111, the second optical path 112 and third optical path 113.Specifically, it is anti-to be incident to first for incident ray
It penetrates mirror 10 and constitutes the first optical path 111, the light reflected from the first reflecting mirror 10 is incident to the second reflecting mirror 20 and forms the second optical path
112, the light reflected from the second reflecting mirror 20 is incident to lens module 30 and forms third optical path 113.Three optical paths be not overlapped and
Z-type layout is constituted, off-axis refraction-reflection type camera 100 is enabled effectively to avoid light caused by coaxial manner (as shown in Figure 6)
Central obscuration phenomenon.Specifically, referring to Fig. 6, central obscuration phenomenon is incident ray when being incident to the first reflecting mirror 10,
The middle section light of incident ray is blocked by the second reflecting mirror 20, and the two side portions light of only incident ray can reach at this time
First reflecting mirror 10, and it is incident on the light central part missing of the first reflecting mirror 10, as central obscuration phenomenon.Wherein, altogether
It is anti-through first that axis refers to that incident ray is incident to the central symmetry axis 1 of the first optical path of the first reflecting mirror 10 formation, incident ray
Mirror 10 is penetrated to reflex to the central symmetry axis 2 for the second optical path that the second reflecting mirror 20 is formed and inject after the reflection of the second reflecting mirror 20
Lens module 30 formed third optical path central symmetry axis 3, three central symmetry axis be overlapped, i.e., central symmetry axis 1, in
Heart symmetry axis 2 and central symmetry axis 3 are to be overlapped.And the application embodiment is by by the first reflecting mirror 10, the second reflecting mirror
20 are set as off-axis mode (as shown in Figure 4 and Figure 5), referring to Fig. 4, referring to that incident ray is incident to the first reflecting mirror off axis
The central symmetry axis 4 of 10 the first optical paths 111 formed, incident ray reflex to the second reflecting mirror 20 through the first reflecting mirror 10 and are formed
The second optical path 112 central symmetry axis 5 and through the second reflecting mirror 20 reflection after inject lens module 30 formed third optical path
113 central symmetry axis 6, three central symmetry axis are not overlapped, i.e. central symmetry axis 4, central symmetry axis 5 and central symmetry
Axis 6 is not overlapped.First optical path 111, the second optical path 112 and third optical path 113 are not overlapped, and the first reflecting mirror 10 and second is anti-
It penetrates mirror 20 (not shift to install as previously described) in the same plane, it is possible to prevente effectively from light caused by coaxial manner
Central obscuration phenomenon, the good imaging quality of off-axis refraction-reflection type camera 100.
First reflecting mirror 10 and the second reflecting mirror 20 are used to zoom in or out the focal length (phase of off-axis refraction-reflection type camera 100
It to camera when being not provided with the first reflecting mirror and the second reflecting mirror, is all suitable in full).Specifically, off-axis refraction-reflection type camera shooting
First 100 meet conditional: K=f1/f2, D=| f1-f2 |.Wherein, K is that the focal length of lens module 30 changes multiple, f1 first
The focal length of reflecting mirror 10, f2 are the focal length of the second reflecting mirror 20, and D is the first reflecting mirror prototype 10a and the second reflecting mirror prototype 20a
Two relatively paraboloidal centers between linear distance (as shown in Figure 7) specifically please refer to Fig. 4 and Fig. 7, Fig. 7 is indicated
Be in off-axis refraction-reflection type camera 100 shown in Fig. 4 first reflecting mirror 10 cutting before the first reflecting mirror prototype 10a and second
Reflecting mirror 20 cut before the second reflecting mirror prototype 20a, the first reflecting mirror prototype 10a and the second reflecting mirror prototype 20a for
Two complete paraboloidal reflecting mirrors, i.e. the first reflecting mirror 10 in Fig. 4 are to be cut by the first reflecting mirror prototype 10a in Fig. 7
The reflecting mirror with part off axis paraboloid mirror for cutting out, the second reflecting mirror 20 in Fig. 4 are former by the second reflecting mirror in Fig. 7
The reflecting mirror with part off axis paraboloid mirror that type 20a is cut into, D are to have complete two paraboloidal reflecting mirrors
Center (the O in Fig. 7 of opposite paraboloid (paraboloid 20b and paraboloid 10b)1And O2) project to linear distance in XZ plane.
The focal length f1 of first reflecting mirror 10 is related with the radius of curvature R 1 of the first reflecting mirror 10, and f1 is directly proportional to R1, it may be assumed that when R1 is bigger
When, f1 is bigger；When R1 is smaller, f1 is smaller.For example, f1=0.5*R1, if R1=1mm, f1=0.5mm；If R1=2mm,
Then f1=1mm；If R1=0.1mm, f1=0.05mm.Correspondingly, the focal length f2 of the second reflecting mirror 20 and the second reflecting mirror 20
Radius of curvature R 2 it is related, f2 is directly proportional to R2, it may be assumed that when R2 is bigger, f2 is bigger；When R2 is smaller, f2 is smaller.For example, f2
=0.8*R2, if R2=1mm, f2=0.8mm；If R2=2mm, f2=1.6mm；If R2=0.2mm, f2=
0.16mm.Since the focal length of lens module 30 changes multiple K=f1/f2, and the first reflecting mirror prototype 10a and the second reflecting mirror are former
Linear distance D=between the opposite paraboloid center of two of type 20a | f1-f2 |, wherein f1 can be 0.1,0.12,0.3 etc.
Numerical value, f2 can be the numerical value such as 0.1,0.22,0.3.Then work as f1=1mm, when f2=0.8mm, K=f1/f2=1.25, D=|
F1-f2 |=0.2mm ought meet K=1.25mm, when D=0.2mm, the focal length of off-axis refraction-reflection type camera 100 is exaggerated
1.25 again；Work as f1=0.4mm, when f2=0.8mm, K=f1/f2=0.5, D=| f1-f2 |=0.4mm ought meet K=
When 0.5, D=0.4mm, the focal length of off-axis refraction-reflection type camera 100 reduces 0.5 times.To sum up, by adjusting the first reflecting mirror
10, the focal length of the second reflecting mirror 20 and above-mentioned linear distance can effectively zoom in or out the focal length of off-axis refraction-reflection type camera 100.
Please referring to Fig. 4 and Fig. 5, the first reflecting mirror 10 includes opposite the first object side 11 and the first image side surface 12, and first
Object side 11 is concave surface.First object side 11 is used to reflect the incident ray for being incident to the first reflecting mirror 10 from the external world.First object
Side 11 can be any one in paraboloid, spherical surface, ellipsoid or hyperboloid.In the application embodiment, the first object side
When face 11 is paraboloid, spherical surface, ellipsoid or hyperboloid, it can effectively optimize the imaging aberration of off-axis refraction-reflection type camera 100, mention
High imaging quality.It further,, can be further since paraboloid is quadratic surface when the first object side 11 is paraboloid
The imaging aberration for optimizing off-axis refraction-reflection type camera 100 corrects aberration of off-axis refraction-reflection type camera 100 itself, greatly mentions
High imaging quality.
Second reflecting mirror 20 includes opposite the second object side 21 and the second image side surface 22, and the second image side surface 22 is convex surface.
Second image side surface 22 is for reflecting the incident ray for being reflexed to the second image side surface 22 by the first object side 11.Second image side surface 22 is
Any one in paraboloid, spherical surface, ellipsoid or hyperboloid.First object side 11 and the second image side surface 22 are opposite.In this Shen
When second image side surface 22 is paraboloid, spherical surface, ellipsoid or hyperboloid, it can please effectively optimize off-axis refraction-reflection type in embodiment
The imaging aberration of camera 100 improves image quality.Further, when the second image side surface 22 is paraboloid, due to paraboloid
For quadratic surface, the imaging aberration of off-axis refraction-reflection type camera 100 can be advanced optimized, corrects off-axis refraction-reflection type camera
100 aberration itself, greatlys improve image quality.First object side 11 is oppositely arranged with the second image side surface 22, be conducive into
It penetrates light and forms reflected light path between the first object side 11 and the second image side surface 22, fold incident ray, realize off-axis catadioptric
The miniaturization of formula camera 100.
First reflecting mirror 10 and the second reflecting mirror 20 can be used silicon carbide or suitable for the high specific stiffnesses in space, swollen close to zero
The alternative materials swollen, thermal distoftion is small are conducive to off-axis refraction-reflection type and take the photograph such as super-low expansion (ULE) glass chamber, ZERODO material
As first 100 light-weight design.
Second reflecting mirror 20 is located at the object side of the first reflecting mirror 10, so that incident ray is successively incident to the first reflecting mirror
10, the second reflecting mirror 20 and lens module 30 can effectively reduce the total length of off-axis refraction-reflection type camera 100.
Referring to Fig. 8, lens module 30 is imaged for converging in incident ray on imaging detector 40.Lens module 30
It successively include the first lens 31, the second lens 32, the third lens 33 and the 4th lens 34 from object side to image side.When lens module 30
When for being imaged, the incident ray reflected from the second reflecting mirror 20 enters lens module 30 from object side direction, and sequentially passes through the
One lens 31, the second lens 32, the third lens 33 and the 4th lens 34, finally converge on imaging detector 40 and are imaged.
The focal length of lens module 30 can be fixed, and lens module 30 is also possible to zoom.When lens module 30 into
When row zoom, imaging detector 40 is fixed, in the first lens 31, the second lens 32, the third lens 33 and the 4th lens 34
At least one movement so that the first lens 31, the second lens 32, the third lens 33 and the 4th lens 34 are any between the two
The variation of at least one of relative position carry out zoom, the first reflecting mirror 10 and the second reflecting mirror 20 make off-axis catadioptric in addition
Formula camera 100 is in multiple zoom.For example, it is assumed that the initial focal length f of lens module 30 is 1mm, if being not provided with the first reflecting mirror
With the second reflecting mirror, then the initial focal length of camera is just 1mm, since the application is provided with the first reflecting mirror 10 and the second reflection
Mirror 20, the first reflecting mirror 10 and the second reflecting mirror 20 amplify the focal length of off-axis refraction-reflection type camera 100, and amplification factor is 1.5,
The initial focal length of off-axis refraction-reflection type camera 100 is 1.5mm at this time.As the first lens 31, the second lens 32,33 and of the third lens
At least one of 4th lens 34 are mobile so that the focal length f of lens module 30 becomes 2mm, if being not provided with the first reflecting mirror and the
Two-mirror, then the initial focal length of camera is just 2mm, since the application is provided with the first reflecting mirror 10 and the second reflecting mirror
20, the first reflecting mirror 10 and the second reflecting mirror 20 amplify the focal length of off-axis refraction-reflection type camera 100, and amplification factor is still 1.5,
Then the focal length of off-axis refraction-reflection type camera 100 becomes 3mm at this time.In the application embodiment, the focal length of lens module 30 is only needed
It finely tunes, the focal length amplification that can be achieved with off-axis refraction-reflection type camera 100 is obvious, reaches off-axis refraction-reflection type camera 100
Long, the total length of focal length effect, be conducive to the miniaturization of off-axis refraction-reflection type camera 100.
When lens module 30 carries out zoom, in the first lens 31, the second lens 32, the third lens 33 and the 4th lens 34
At least one movement, the mobile situation of at least one lens group herein include: 1. the first lens 31 it is mobile, the second lens
32, the third lens 33 and the 4th lens 34 do not move.2. the second lens 32 are mobile, the first lens 31, the third lens 33 and the 4th
Lens 34 do not move.3. the third lens 33 are mobile, the first lens 31, the second lens 32 and the 4th lens 34 are not moved.4. first
Lens 31 and the second lens 32 move, and the third lens 33 and the 4th lens 34 do not move.5. the second lens 32 and the third lens
33 move, and the first lens 31 and the 4th lens 34 do not move.6. the first lens 31 and the third lens 33 move, the second lens
32 and the 4th lens 34 do not move.7. the first lens 31, the second lens 32 and the third lens 33 move, the 4th lens 34 are not moved
It is dynamic.8. the first lens 31, the second lens 32 and the 4th lens 34 move, the third lens 33 are not moved.9. the first lens 31,
Three lens 33 and the 4th lens 34 move, and the second lens 32 do not move.10. the second lens 32, the third lens 33 and the 4th lens
34 move, and the first lens 31 do not move.First lens 31, the second lens 32, the third lens 33 and the 4th lens 34 move
It is dynamic.Relative position variation between first lens 31, the second lens 32, the third lens 33 and the 4th lens 34, herein lens
Relative position variation includes the variation such as distance, displacement and direction of lens.
The application embodiment can be by lens module 30 in short focus state and length by carrying out zoom to lens module 30
It is switched between coke-like state.In one embodiment, when lens module 30 carries out the switching of short focus state and focal length state,
First lens 31 are fixed, and the second lens 32, the third lens 33 and the 4th lens 34 are mobile, so that the second lens 32, the
The change in location of three lens 33 and the 4th lens 34 relative to the first lens 31.Wherein, the second lens 32, the third lens 33 and
The moving distance of four lens 34 can be different, such as 32 moving distance of the second lens is 3.89mm, 33 moving distance of the third lens
For 3.69mm, 34 moving distance of the 4th lens is 3.49mm, at this point, the moving distance of the second lens 32 is greater than the third lens 33
Moving distance, and the moving distance of the third lens 33 is greater than the moving distance of the 4th lens 34.The second lens 32 at this time, third
Lens 33 and the 4th lens 34 can move simultaneously or asynchronously movement.Specifically, when the second lens 32, the third lens 33 and
When four movements simultaneously of lens 34, the movement speed of the second lens 32, the third lens 33 and the 4th lens 34 can be different, can be
The movement speed of second lens 32 faster than the third lens 33 and the movement speed of the 4th lens 34 so that the second lens 32,
When three lens 33 and the 4th movement simultaneously of lens 34 and movement speed difference, so that the second lens 32, the third lens 33 and the 4th
Traveling time is consistent in the unequal situation of the moving distance of lens 34, convenient for control.When the second lens 32,33 and of the third lens
When mobile when 4th lens 34 are different, the mobile sequencing of the second lens 32, the third lens 33 and the 4th lens 34 is different, can
First to move the second lens 32, then the third lens group 33 is moved, finally move the 4th lens 34, so that the second lens 32, the
Three lens 33 are identical with movement speed in the unequal situation of moving distance of the 4th lens 34, are also convenient for controlling.
More specifically, when lens module 30 is switched to focal length state by short focus state, the second lens 32, the third lens 33
It is moved along optical axis direction by image side to object side with the 4th lens 34；When zoom lens 100 is switched to short focus shape by focal length state
When state, the second lens 32, the third lens 33 and the 4th lens 34 are moved along optical axis direction by object side to image side.
First lens 31, the second lens 32, the third lens 33 and the 4th lens 34 material can be plastics or glass.Its
In, the refractive index of glass is bigger than plastics, and since the refractive index of material is higher, the ability for reflecting incident light is stronger.Cause
This, refractive index is higher, and lens can be set thinner.Therefore, when the first lens 31, the second lens 32, the third lens 33 and
When the material of four lens 34 is glass, lens are thinner, are conducive to the miniaturization of off-axis refraction-reflection type camera 100.In addition, lens by
Glass material is made, moreover it is possible to effectively solve the problems, such as that lens generate temperature drift phenomenon when variation of ambient temperature.And when the first lens 31,
When the material of second lens 32, the third lens 33 and the 4th lens 34 is plastics, cost is relatively low, is convenient for volume production.
The object side of first lens 31 is convex surface, and the image side surface of the first lens 31 is convex surface；The object side of second lens 32
For concave surface, the image side surface of the second lens 32 is concave surface；The object side of the third lens 33 is concave surface, and the image side surface of the third lens 33 is
Convex surface；The object side of 4th lens 34 is convex surface, and the image side surface of the 4th lens 34 is concave surface.At this point, the first lens 31 have just
Refracting power, the second lens 32 have negative refracting power.
When the face type and refracting power of the first lens 31, the second lens 32, the third lens 33 and the 4th lens 34 meet it is above-mentioned
When condition, off-axis refraction-reflection type camera 100 is compact-sized, each lens-shape size is easy to process, and focal length variable range it is big, at
It is suitable for scale of mass production as high-quality.
In addition, the first lens 31 of lens module 30, the second lens 32, the third lens 33 and the 4th lens 34 can also replace
It is changed to the first lens group, the second lens group, the third lens group and the 4th lens group.Wherein, the first lens group includes one or more
A lens, the second lens group also include one or more lens, and the third lens group also includes one or more lens, the 4th lens
Group is also comprising one or more lens.Similarly, by adjusting the positional relationship of one or more lens groups, such as change lens group it
Between distance, thus it is possible to vary the focal length of lens module 30, to change off-axis 100 focal length of refraction-reflection type camera.
Off-axis refraction-reflection type camera 100 may also include the infrared absorption filter being arranged between the 4th lens 34 and imaging detector 40
Mating plate 50, infrared fileter 50 is for the infrared light in filtering environmental.
Imaging detector 40 can for Charge Coupled Image sensing component (Charge Coupled Device, CCD) or
Complementary metal oxide semiconductor (CMOS) image sensing component (Complementary Metal-Oxide Semiconductor,
CMOS).Converge to imaging detector 40 light first pass through processing after be changed into electric signal, then pass through analog-digital converter chip
(Analog-to-digital converter chip, ADC) converts the electrical signal to digital signal, and digital signal is by processing
Afterwards for being imaged.
In the description of this specification, reference term " certain embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " means in conjunction with the embodiment
Or example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the application.
In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, description
Particular features, structures, materials, or characteristics can be in any one or more embodiments or example with suitable side
Formula combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one described feature.In the description of the present application, the meaning of " plurality " is at least two, such as two,
Three, unless otherwise specifically defined.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant, and scope of the present application is defined by the claims and their equivalents.
Claims (10)
1. a kind of off-axis refraction-reflection type camera, which is characterized in that the off-axis refraction-reflection type camera includes the first reflecting mirror, second
Reflecting mirror, lens module and imaging detector, incident ray along the first optical path are incident to first reflecting mirror and by described
The reflection of one reflecting mirror is incident to second reflecting mirror simultaneously along the second optical path by the incident ray after first reflecting mirror reflection
It is reflected by second reflecting mirror, the camera lens is incident to along third optical path by the incident ray after second reflecting mirror reflection
Mould group, the lens module are described for will converge to the imaging detector along the incident ray of the third optical path incidence
Imaging detector is used to the light of convergence being converted to electric signal to be imaged；
Wherein, first optical path, second optical path and the third optical path are not overlapped.
2. off-axis refraction-reflection type camera according to claim 1, which is characterized in that first optical path, second light
Road and the third optical path combine to form Z-type optical path.
3. off-axis refraction-reflection type camera according to claim 1, which is characterized in that second reflecting mirror is located at described the
The object side of one reflecting mirror.
4. off-axis refraction-reflection type camera according to claim 1, which is characterized in that first reflecting mirror includes opposite
First object side and the first image side surface, second reflecting mirror include opposite the second object side and the second image side surface, and described
One object side is opposite with second image side surface, and first object side is used for reflecting incident ray, second image side surface
In reflection by the incident ray after the first object offside reflection.
5. off-axis refraction-reflection type camera according to claim 4, which is characterized in that first object side be paraboloid,
Any one in spherical surface, ellipsoid or hyperboloid；And/or
Second image side surface is any one in paraboloid, spherical surface, ellipsoid or hyperboloid.
6. off-axis refraction-reflection type camera according to claim 4, which is characterized in that first object side is concave surface, institute
Stating the second image side surface is convex surface.
7. off-axis refraction-reflection type camera according to claim 1, which is characterized in that first reflecting mirror and described second
Reflecting mirror for changing the off-axis refraction-reflection type camera focal length.
8. off-axis refraction-reflection type camera according to claim 7, which is characterized in that the off-axis refraction-reflection type camera meets
Conditional:
K=f1/f2；
D=| f1-f2 |；
Wherein, K is that the focal length of the off-axis refraction-reflection type camera changes multiple, and f1 is the focal length of first reflecting mirror, and f2 is
The focal length of second reflecting mirror, D are two relatively paraboloidal centers of the first reflecting mirror prototype and the second reflecting mirror prototype
Between linear distance, wherein the first reflecting mirror prototype be first reflecting mirror cutting before have complete parabolic
The reflecting mirror in face, the second reflecting mirror prototype have complete paraboloidal reflection before being second reflecting mirror cutting
Mirror.
9. off-axis refraction-reflection type camera according to claim 1, which is characterized in that the lens module is from object side to image side
Including the first lens, the second lens, the third lens and the 4th lens, the object sides of first lens is convex surface, described first
The image side surface of lens is convex surface；The object side of second lens is concave surface, and the image side surface of second lens is concave surface；It is described
The object side of the third lens is concave surface, and the image side surface of the third lens is convex surface；The object side of 4th lens is convex surface,
The image side surface of 4th lens is concave surface.
10. a kind of electronic device characterized by comprising
Shell；With
Off-axis refraction-reflection type camera described in claim 1 to 9 any one, the off-axis refraction-reflection type camera and the shell
In conjunction with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910925962.0A CN110515189A (en) | 2019-09-27 | 2019-09-27 | Off-axis refraction-reflection type camera and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910925962.0A CN110515189A (en) | 2019-09-27 | 2019-09-27 | Off-axis refraction-reflection type camera and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110515189A true CN110515189A (en) | 2019-11-29 |
Family
ID=68633878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910925962.0A Pending CN110515189A (en) | 2019-09-27 | 2019-09-27 | Off-axis refraction-reflection type camera and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110515189A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111522135A (en) * | 2020-03-20 | 2020-08-11 | 北京国泰蓝盾科技有限公司 | Large-aperture catadioptric lens suitable for triangulation |
| WO2021171030A1 (en) * | 2020-02-26 | 2021-09-02 | Cambridge Mechatronics Limited | A camera assembly |
| CN114047618A (en) * | 2021-11-04 | 2022-02-15 | 苏州大学 | Off-axis afocal optical system of large-caliber spherical primary mirror |
| CN114114595A (en) * | 2020-08-31 | 2022-03-01 | 华为技术有限公司 | Lens module, camera module and terminal |
| JPWO2022138054A1 (en) * | 2020-12-21 | 2022-06-30 | ||
| TWI776386B (en) * | 2020-11-02 | 2022-09-01 | 南韓商三星電機股份有限公司 | Optical imaging system |
| US11796893B2 (en) | 2019-05-05 | 2023-10-24 | Huawei Technologies Co., Ltd. | Compact camera module and terminal device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101473261A (en) * | 2006-06-15 | 2009-07-01 | 奥林巴斯株式会社 | Optical system |
| CN110100197A (en) * | 2017-11-29 | 2019-08-06 | 奥普图工程股份有限公司 | Telecentric lens |
-
2019
- 2019-09-27 CN CN201910925962.0A patent/CN110515189A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101473261A (en) * | 2006-06-15 | 2009-07-01 | 奥林巴斯株式会社 | Optical system |
| CN110100197A (en) * | 2017-11-29 | 2019-08-06 | 奥普图工程股份有限公司 | Telecentric lens |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11796893B2 (en) | 2019-05-05 | 2023-10-24 | Huawei Technologies Co., Ltd. | Compact camera module and terminal device |
| WO2021171030A1 (en) * | 2020-02-26 | 2021-09-02 | Cambridge Mechatronics Limited | A camera assembly |
| GB2592579A (en) * | 2020-02-26 | 2021-09-08 | Cambridge Mechatronics Ltd | A camera assembly |
| GB2607837A (en) * | 2020-02-26 | 2022-12-14 | Cambridge Mechatronics Ltd | A camera assembly |
| CN111522135A (en) * | 2020-03-20 | 2020-08-11 | 北京国泰蓝盾科技有限公司 | Large-aperture catadioptric lens suitable for triangulation |
| CN114114595B (en) * | 2020-08-31 | 2024-04-16 | 华为技术有限公司 | Lens module, camera module and terminal |
| CN114114595A (en) * | 2020-08-31 | 2022-03-01 | 华为技术有限公司 | Lens module, camera module and terminal |
| TWI776386B (en) * | 2020-11-02 | 2022-09-01 | 南韓商三星電機股份有限公司 | Optical imaging system |
| TWI811049B (en) * | 2020-11-02 | 2023-08-01 | 南韓商三星電機股份有限公司 | Optical imaging system |
| US11921269B2 (en) | 2020-11-02 | 2024-03-05 | Samsung Electro-Mechanics Co., Ltd. | Optical imaging device |
| WO2022138054A1 (en) * | 2020-12-21 | 2022-06-30 | 富士フイルム株式会社 | Variable-magnification optical system and imaging device |
| JP7317252B2 (en) | 2020-12-21 | 2023-07-28 | 富士フイルム株式会社 | Magnification optical system and imaging device |
| JPWO2022138054A1 (en) * | 2020-12-21 | 2022-06-30 | ||
| CN114047618B (en) * | 2021-11-04 | 2022-07-19 | 苏州大学 | Off-axis afocal optical system of large-caliber spherical primary mirror |
| WO2023077712A1 (en) * | 2021-11-04 | 2023-05-11 | 苏州大学 | Off-axis afocal optical system with large-aperture spherical primary mirror |
| US11906718B2 (en) | 2021-11-04 | 2024-02-20 | Soochow University | Wide-aperture spherical primary mirror off-axis afocal optical system |
| CN114047618A (en) * | 2021-11-04 | 2022-02-15 | 苏州大学 | Off-axis afocal optical system of large-caliber spherical primary mirror |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110515189A (en) | Off-axis refraction-reflection type camera and electronic device | |
| CN110888216B (en) | Optical lens, lens module and terminal | |
| US11442257B2 (en) | Camera module and electronic device | |
| KR101278239B1 (en) | Dual lens optical system and Dual lens camera comprising the same | |
| US20040240052A1 (en) | Multiple-focal imaging device, and a mobile device having the multiple-focal-length imaging device | |
| CN110646932B (en) | Reflective camera and electronic device | |
| US11456326B2 (en) | Plenoptic camera for mobile devices | |
| US7933071B2 (en) | Dual lens optical system and digital camera module including the same | |
| CN209593574U (en) | A kind of periscopic zoom lens, imaging modules and electronic device | |
| CN110261997A (en) | Camera lens, camera module and electronic equipment | |
| CN214409431U (en) | Light turning element for camera module, camera module and electronic device | |
| KR20230012633A (en) | Optical lenses, camera modules and electronics | |
| WO2024046056A1 (en) | Camera module and electronic device | |
| US8662762B2 (en) | Compact lens optical system and digital camera module including the same | |
| JP2004085725A (en) | Imaging lens, light converging optical element, and imaging device | |
| US20240103345A1 (en) | Image capturing unit, camera module and electronic device | |
| WO2021185005A1 (en) | Hybrid zoom lens and electronic apparatus | |
| JP2005020718A (en) | Multifocal imaging device and mobile device | |
| CN115480437A (en) | Camera module and electronic equipment | |
| US20230324656A1 (en) | Imaging lens module and electronic device | |
| CN115248497A (en) | Optical lens, camera module and electronic equipment | |
| KR101720188B1 (en) | Compact Lens Optical System and Digital Camera Module Comprising the Same | |
| CN220383160U (en) | Camera module and terminal equipment | |
| CN219392360U (en) | Imaging lens, camera module and electronic device | |
| US12000997B2 (en) | Zoom lens and imaging apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191129 |
|
| RJ01 | Rejection of invention patent application after publication |