CN105785556A - Thin-form right-angle breakover imaging lens set as well as splicing structure and focusing device thereof - Google Patents
Thin-form right-angle breakover imaging lens set as well as splicing structure and focusing device thereof Download PDFInfo
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- CN105785556A CN105785556A CN201610341386.1A CN201610341386A CN105785556A CN 105785556 A CN105785556 A CN 105785556A CN 201610341386 A CN201610341386 A CN 201610341386A CN 105785556 A CN105785556 A CN 105785556A
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/003—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having two lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Abstract
The invention discloses a thin-form right-angle breakover imaging lens set as well as a splicing structure and a focusing device thereof. Right-angle breakover is carried out on an optical path by adopting a prism; and the lens set, which is originally arranged in the Z-axis direction, is distributed to the Y-axis direction, so that the thickness in the Z-axis direction is greatly reduced, and furthermore, thinning of the image lens set is realized. The focusing device of the thin-form right-angle breakover imaging lens set adopts a structure including a front-lens lens seat and a prism lens seat which are arranged on the Z axis, and a prism lens seat and an imaging lens group lens seat which are arranged on the Y axis, so that the thinning of the thickness in the Z-axis direction is realized; and a straight-line groove is formed in the imaging lens group lens seat, so that focusing and alignment of the lens set and a square chip are realized. The two thin-form right-angle breakover imaging lens sets are spliced back to back and can be used for carrying out 360-degree panorama shot; and the thickness is thinned and can be smaller than 8mm, so that the thin-form right-angle breakover imaging lens set can be planted into light and thin electronic products including cell phones and the like.
Description
Technical field
The present invention relates to lens imaging technical field, specifically disclosed a kind of thin type right angle turns imaging lens group and split structure thereof and focussing mechanism.
Background technology
Lens are divided into convex lens and concavees lens.Convex lens is that central authorities are thicker, the lens that edge is relatively thin.Convex lens is divided into the forms such as biconvex, plano-convex and concavo-convex (or positive falcate), and convex lens has the effect assembling light therefore also known as collecting lens, and the effect such as thicker convex lens is then looked in the distance, convergence, this is relevant with the thickness of lens.Convex lens image-forming discipline is exactly: object is placed on outside focus, becomes the real image stood upside down at convex lens opposite side, real image have reduce, etc. big, amplify three kinds.Object distance is more little, and image distance is more big, and real image is more big.Object is placed within focus, becomes the virtual image of upright amplification in convex lens the same side.Object distance is more big, and image distance is more big, and the virtual image is more big.Concavees lens are also known as negative globe lens, and the central authorities of eyeglass are thin, and periphery is thick, concave, so being again concavees lens.Light is had disperse function by concavees lens.After concave spherical surface lens generation deviation is passed through in parallel rays, divergence of beam, become divergent rays, it is not likely to form reality focus, along the reverse extending line of disperse light, meeting at F point in the same side of throw light, formation is a virtual focus (concavees lens have two virtual focuses).Concavees lens imaging law: can be only generated the upright virtual image reduced.
Utilizing the application in the camera of lens imaging technology very general, wherein thin type is one of mainstream research direction.Particularly, along with the lightening trend of the electronic products such as mobile phone, the thin type implanting camera is also more common of demand.
Such as patent CN1908736A discloses a kind of imaging lens arrangements, will be perpendicular to the incident optical axis of gravity direction and is folded to the light path folding optical system of reflector of gravity direction including having and the image formed by this light path folding optical system is changed into the image-forming component of the signal of telecommunication.Some battery of lens or the driving device of lens are moved in the direction that this imaging lens arrangements also includes along being perpendicular to the optical axis being folded to gravity direction by this reflector.It, by adopting light path folding optical system to realize thin design, increases handshaking correction performance, and reduces power consumption.Patent CN102236154A discloses a kind of slimming imaging lens group, sequentially comprised to image side by thing side: one has the first lens of positive refracting power, its thing side surface is convex surface and surface, image side is convex surface, and the thing side surface of these the first lens is aspheric surface with at least one surface in surface, image side；And second lens of the negative refracting power of tool, its thing side surface is concave surface and surface, image side is concave surface, and the thing side surface of these the second lens is aspheric surface with at least one surface in surface, image side；Wherein, this slimming imaging lens group is separately provided with an aperture and a sense electronics optical device for object imaging, this aperture system is arranged between object and this second lens, and this sense electronics optical device is arranged at imaging surface place, and the lens having refracting power in this slimming imaging lens group are two panels.Patent CN101738712A discloses a kind of zoom lens and a kind of camera head, these zoom lens are to have the first battery of lens of negative refractive power by being arranged in order from object side to one-tenth image side, second battery of lens with positive refracting power and the 3rd battery of lens with positive refracting power and the zoom lens that formed, wherein, from wide-angle side to when taking the photograph far-end change multiplying power, first battery of lens moves, second battery of lens shifts to object side, 3rd battery of lens shifts to into image side, airspace between first battery of lens and the second battery of lens is reduced, airspace between second battery of lens and the 3rd battery of lens increases, it is capable of miniaturization, the enhancing of performance and the raising of volume production rate.
The thin type technology of above-mentioned patented technology achieves thin type to a certain extent, but still is that lens group is arranged on same major axes orientation.Simplifying, its lens group extends layout along Z-direction, causes the thickness of its Z-direction to be difficult to further compression.
Summary of the invention
It is an object of the invention to provide a kind of thin type right angle turns imaging lens group, it adopts prism that light path is carried out right angle turns, the battery of lens of former Z-direction is arranged into Y direction, thus significantly reducing the thickness of Z-direction, thus realizing the thin type of imaging lens group.
Further object is that the focussing mechanism that a kind of thin type right angle turns imaging lens group is provided, adopt frontal lens microscope base and the prism microscope base of Z axis layout, and the structure of the prism microscope base of Y-axis layout and imaging len group's microscope base, achieve the thin type of the thickness of Z-direction, by arranging straight-line groove on imaging len group's microscope base, it is achieved that the focusing para-position of battery of lens and square chip.
Another purpose of the present invention is in that to provide a kind of thin type right angle turns imaging lens group split structure, it is put together by the focussing mechanism of two above-mentioned thin type right angle turns imaging lens group, it can realize 360 ° of pan-shots, in the frivolous electronic products such as Z axis thickness is smaller than 8mm after significantly compressing, implantable mobile phone.
It is yet a further object of the present invention to provide the focussing mechanism of a kind of thin type right angle turns imaging lens group split structure, it is put together by the focussing mechanism of two above-mentioned thin type right angle turns imaging lens group, imaging len group's microscope base arranges straight-line groove, achieve the focusing para-position of battery of lens and square chip, can 360 ° of pan-shots, 8mm it is smaller than, in the frivolous electronic product such as implantable mobile phone after thickness thin type.
The present invention provides a kind of thin type right angle turns imaging lens group, including
Frontal lens, is close to thing side, generally convex-concave profile, and focal length is negative value；
Prism, is close to the concave surface of frontal lens, the main shaft shape angle at 45 ° of the principal section of prism and frontal lens；
Minus lens, is close to the exit facet of prism, generally concave-concave shape, and focal length is negative value, and the main shaft of the main shaft of minus lens and frontal lens forms right angle；And
Rear lens, is close to the rear of imaging surface, generally biconvex shape, and focal length is overlap with the main shaft of minus lens on the occasion of, the main shaft of rear lens and form right angle with the main shaft of frontal lens.
It is also preferred that the left the ratio of the radius of curvature R of the concave surface bore D of frontal lens and concave surface meets 1.5 < D/R < 2.
It is also preferred that the left the refractive index n of prism2With frontal lens n1Ratio meet 0.9≤n2/n1≤ 1.3, more preferably 1.1≤n2/n1≤1.2。
It is also preferred that the left at least one is aspheric surface in the both sides minute surface of rear lens.
It is also preferred that the left imaging surface position is provided with sensitive chip.
The present invention provides the focussing mechanism of a kind of above-mentioned thin type right angle turns imaging lens group, including
Frontal lens microscope base, is used for carrying frontal lens；
Prism microscope base, is used for carrying the main shaft shape angle at 45 ° of prism, prism microscope base and frontal lens；
Imaging len group's microscope base, inside carries minus lens, rear lens；And
Chip carrier, is used for carrying sensitive chip, can move along the major axes orientation of minus lens, rear lens；
Imaging len group's microscope base shell is provided with a plurality of straight-line groove, parallels with the main shaft of minus lens, rear lens in the straight-line extension direction of straight-line groove.
It is also preferred that the left a plurality of straight-line groove is arranged along the circumferential interval in minus lens, the main shaft cross section of rear lens.
It is also preferred that the left described straight-line groove is 3 to 12.
The present invention provides a kind of thin type right angle turns imaging lens group split structure, two above-mentioned thin type right angle turns imaging lens group be put together,
The first prism in first thin type right angle turns imaging lens group, symmetrical split opposing with the second prism in the second thin type right angle turns imaging lens group,
The main shaft of the first frontal lens in the first thin type right angle turns imaging lens group, coincides with the main shaft of the second frontal lens in the second thin type right angle turns imaging lens group, and
The central point of the first frontal lens, the central point of the second frontal lens and the central point of the first prism and the second prism split form straight line.
The present invention provides the focussing mechanism of a kind of thin type right angle turns imaging lens group split structure, the focussing mechanism of two above-mentioned thin type right angle turns imaging lens group be put together,
The first prism microscope base in the focussing mechanism of the first thin type right angle turns imaging lens group, symmetrical split opposing with the second prism microscope base in the focussing mechanism of the second thin type right angle turns imaging lens group,
The main shaft of the first frontal lens in the first thin type right angle turns imaging lens group, coincides with the main shaft of the second frontal lens in the second thin type right angle turns imaging lens group, and
The central point of the first frontal lens, the central point of the second frontal lens and the central point of the first prism and the second prism split form straight line.
Beneficial effects of the present invention has:
1, it adopts prism that light path is carried out right angle turns, and the battery of lens of former Z-direction is arranged into Y direction, thus significantly reducing the thickness of Z-direction, thus realizing the thin type of imaging lens group.
2, frontal lens microscope base and the prism microscope base of Z axis layout are adopted, and the structure of the prism microscope base of Y-axis layout and imaging len group's microscope base, achieve the thin type of the thickness of Z-direction, thickness is smaller than 8mm, by arranging straight-line groove on imaging len group's microscope base, it is achieved that the focusing para-position of battery of lens and square chip.
3, it is put together by two thin types right angle turns imaging lens group " back-to-back ", it is possible to 360 ° of pan-shots, after thickness thin type, is smaller than 8mm, in the frivolous electronic product such as implantable mobile phone.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of the thin type right angle turns imaging lens group of the embodiment of the present invention 1.
Fig. 2 is the focussing mechanism sectional structure schematic diagram of the thin type right angle turns imaging lens group of the embodiment of the present invention 1.
Fig. 3 is the focussing mechanism perspective view of the thin type right angle turns imaging lens group of the embodiment of the present invention 1.
Fig. 4 is the structural representation of the shape right angle turns imaging lens group split structure of the embodiment of the present invention 1.
Fig. 5 is the sectional structure schematic diagram of the shape right angle turns imaging lens group split structure of the embodiment of the present invention 1.
Fig. 6 is the sectional structure schematic diagram of the focussing mechanism of the shape right angle turns imaging lens group split structure of the embodiment of the present invention 1.
Fig. 7 is the frontal lens structural representation in the thin type right angle turns imaging lens group of the embodiment of the present invention 2.
Fig. 8 is the structural representation of the thin type right angle turns imaging lens group of the embodiment of the present invention 2.
In figure, 1-frontal lens, 2-prism, 3-minus lens, 4-rear lens, 5-sensitive chip, 6-frontal lens microscope base, 7-prism microscope base, 8-imaging len group's microscope base, 9-chip carrier, 10-straight-line groove.
Detailed description of the invention
The present invention can be well understood to further by the specific embodiment of invention now given below, but they are not limitation of the invention.The part that specific embodiment does not describe in detail is to adopt prior art, known technology means and industry standard to obtain.
Embodiment 1
Incorporated by reference to referring to accompanying drawing 1, thin type right angle turns imaging lens group provided by the invention, including
Frontal lens 1, is close to thing side, generally convex-concave profile, and focal length is negative value；
Prism 2, is close to the main shaft shape angle at 45 ° of the concave surface of frontal lens 1, the principal section of prism 2 and frontal lens 1；
Minus lens 3, is close to the exit facet of prism 2, generally concave-concave shape, and focal length is negative value, and the main shaft of the main shaft of minus lens 3 and frontal lens 1 forms right angle；And
Rear lens 4, is close to the rear of imaging surface, generally biconvex shape, and focal length is overlap with the main shaft of minus lens 3 on the occasion of, the main shaft of rear lens 4 and form right angle with the main shaft of frontal lens 1；
Be provided with sensitive chip 5 in imaging surface position, existing sensitive chip is generally square.
Accordingly, incorporated by reference to referring to accompanying drawing 2 and 3, the focussing mechanism of above-mentioned thin type right angle turns imaging lens group, including
Frontal lens microscope base 6, is used for carrying frontal lens 1；
Prism microscope base 7, is used for carrying prism 2, the main shaft shape angle at 45 ° of prism microscope base 7 and frontal lens 1；
Imaging len group's microscope base 8, inside carries minus lens 3, rear lens 4；And
Chip carrier 9, is used for carrying sensitive chip 5, can move along the major axes orientation of minus lens 3, rear lens 4；
Imaging len group's microscope base 8 shell is provided with a plurality of straight-line groove 10, parallels with the main shaft of minus lens 3, rear lens 4 in the straight-line extension direction of straight-line groove 10.
As the preferred version of the present embodiment, a plurality of straight-line groove 10 is arranged along the circumferential interval in minus lens 3, the main shaft cross section of rear lens 4, and bar number is traditionally arranged to be 3 to 12.
Incorporated by reference to referring to attached Figure 4 and 5, above-mentioned thin type right angle turns imaging lens group split structure, two above-mentioned thin type right angle turns imaging lens group it is put together,
The first prism in first thin type right angle turns imaging lens group, symmetrical split opposing with the second prism in the second thin type right angle turns imaging lens group,
The main shaft of the first frontal lens in the first thin type right angle turns imaging lens group, coincides with the main shaft of the second frontal lens in the second thin type right angle turns imaging lens group, and
The central point of the first frontal lens, the central point of the second frontal lens and the central point of the first prism and the second prism split form straight line.
Accordingly, incorporated by reference to referring to accompanying drawing 6, the focussing mechanism of above-mentioned thin type right angle turns imaging lens group split structure, the focussing mechanism of two above-mentioned thin type right angle turns imaging lens group it is put together,
The first prism microscope base in the focussing mechanism of the first thin type right angle turns imaging lens group, symmetrical split opposing with the second prism microscope base in the focussing mechanism of the second thin type right angle turns imaging lens group,
The main shaft of the first frontal lens in the first thin type right angle turns imaging lens group, coincides with the main shaft of the second frontal lens in the second thin type right angle turns imaging lens group, and
The central point of the first frontal lens, the central point of the second frontal lens and the central point of the first prism and the second prism split form straight line.
Embodiment 2
The present embodiment is essentially identical with the situation of embodiment 1, and other situations repeat no more, and the parameter range of choice of its each lens is as follows:
Incorporated by reference to referring to accompanying drawing 7, the concave surface bore D of frontal lens is satisfied 1.5 < D/R < 2 with the ratio of the radius of curvature R of concave surface.
Incorporated by reference to referring to accompanying drawing 8, the refractive index n of prism2With frontal lens n1Ratio meet 0.9≤n2/n1≤ 1.3, more preferably 1.1≤n2/n1≤1.2。
As the preferred version of the present embodiment, in the both sides minute surface of rear lens, at least one is aspheric surface.
The thin type right angle turns imaging lens group of the present invention and split structure thereof and focussing mechanism, have following feature:
1, it adopts prism that light path is carried out right angle turns, and the battery of lens of former Z-direction is arranged into Y direction, thus significantly reducing the thickness of Z-direction, thus realizing the thin type of imaging lens group.
2, frontal lens microscope base and the prism microscope base of Z axis layout are adopted, and the structure of the prism microscope base of Y-axis layout and imaging len group's microscope base, achieve the thin type of the thickness of Z-direction, thickness is smaller than 8mm, by arranging straight-line groove on imaging len group's microscope base, it is achieved that the focusing para-position of battery of lens and square chip.
3, it is put together by two thin types right angle turns imaging lens group " back-to-back ", it is possible to 360 ° of pan-shots, after thickness thin type, is smaller than 8mm, in the frivolous electronic product such as implantable mobile phone.
Above disclosed it is only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention, the equivalent variations therefore made according to the present patent application the scope of the claims with this, still belong to the scope that the present invention contains.
Claims (10)
1. a thin type right angle turns imaging lens group, it is characterised in that: include
Frontal lens, is close to thing side, generally convex-concave profile, and focal length is negative value；
Prism, is close to the concave surface of frontal lens, the main shaft shape angle at 45 ° of the principal section of prism and frontal lens；
Minus lens, is close to the exit facet of prism, generally concave-concave shape, and focal length is negative value, and the main shaft of the main shaft of minus lens and frontal lens forms right angle；And
Rear lens, is close to the rear of imaging surface, generally biconvex shape, and focal length is overlap with the main shaft of minus lens on the occasion of, the main shaft of rear lens and form right angle with the main shaft of frontal lens.
2. thin type right angle turns imaging lens group according to claim 1, it is characterised in that: the concave surface bore D of frontal lens is satisfied 1.5 < D/R < 2 with the ratio of the radius of curvature R of concave surface.
3. thin type right angle turns imaging lens group according to claim 1, it is characterised in that: the refractive index n of prism2With frontal lens n1Ratio meet 0.9≤n2/n1≤1.3。
4. thin type right angle turns imaging lens group according to claim 1, it is characterised in that: in the both sides minute surface of rear lens, at least one is aspheric surface.
5. thin type right angle turns imaging lens group according to claim 1, it is characterised in that: imaging surface position is provided with sensitive chip.
6. the focussing mechanism of a thin type right angle turns imaging lens group according to any one of claim 1 to 5, it is characterised in that: include
Frontal lens microscope base, is used for carrying frontal lens；
Prism microscope base, is used for carrying the main shaft shape angle at 45 ° of prism, prism microscope base and frontal lens；
Imaging len group's microscope base, inside carries minus lens, rear lens；And
Chip carrier, is used for carrying sensitive chip, can move along the major axes orientation of minus lens, rear lens；
Imaging len group's microscope base shell is provided with a plurality of straight-line groove, parallels with the main shaft of minus lens, rear lens in the straight-line extension direction of straight-line groove.
7. the focussing mechanism of thin type right angle turns imaging lens group according to claim 6, it is characterised in that: a plurality of straight-line groove is arranged along the circumferential interval in minus lens, the main shaft cross section of rear lens.
8. the focussing mechanism of thin type right angle turns imaging lens group according to claim 6, it is characterised in that: described straight-line groove is 3 to 12.
9. a thin type right angle turns imaging lens group split structure, the thin type right angle turns imaging lens group according to any one of two claim 1 to 5 is put together, it is characterised in that:
The first prism in first thin type right angle turns imaging lens group, symmetrical split opposing with the second prism in the second thin type right angle turns imaging lens group,
The main shaft of the first frontal lens in the first thin type right angle turns imaging lens group, coincides with the main shaft of the second frontal lens in the second thin type right angle turns imaging lens group,
And the central point of the central point of the central point of the first frontal lens, the second frontal lens and the first prism and the second prism split forms straight line.
10. a focussing mechanism for thin type right angle turns imaging lens group split structure, the focussing mechanism of the thin type right angle turns imaging lens group according to any one of two claim 6 to 8 is put together, it is characterised in that:
The first prism microscope base in the focussing mechanism of the first thin type right angle turns imaging lens group, symmetrical split opposing with the second prism microscope base in the focussing mechanism of the second thin type right angle turns imaging lens group,
The main shaft of the first frontal lens in the first thin type right angle turns imaging lens group, coincides with the main shaft of the second frontal lens in the second thin type right angle turns imaging lens group,
And the central point of the central point of the central point of the first frontal lens, the second frontal lens and the first prism and the second prism split forms straight line.
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| CN201610341386.1A CN105785556A (en) | 2016-05-20 | 2016-05-20 | Thin-form right-angle breakover imaging lens set as well as splicing structure and focusing device thereof |
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| CN201610341386.1A CN105785556A (en) | 2016-05-20 | 2016-05-20 | Thin-form right-angle breakover imaging lens set as well as splicing structure and focusing device thereof |
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| WO2019205653A1 (en) * | 2018-04-25 | 2019-10-31 | 华为技术有限公司 | Lens module and camera |
| CN111487750A (en) * | 2016-08-23 | 2020-08-04 | 大立光电股份有限公司 | Photographing optical lens assembly, image capturing device and electronic device |
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