CN209992742U - Optical imaging module - Google Patents
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- CN209992742U CN209992742U CN201821876301.0U CN201821876301U CN209992742U CN 209992742 U CN209992742 U CN 209992742U CN 201821876301 U CN201821876301 U CN 201821876301U CN 209992742 U CN209992742 U CN 209992742U
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Abstract
The utility model is suitable for an optical imaging field provides an optical imaging module. The optical imaging module comprises a circuit component and a lens component. The circuit assembly comprises a circuit substrate, an image sensing assembly, a signal transmission assembly and a multi-lens frame. The signal conduction assembly is electrically connected between the circuit substrate and the image sensing assembly. The multi-lens frame can be arranged on the circuit substrate and surrounds the image sensing component and the signal transmission component. The lens assembly comprises a lens base, a focusing lens group and a driving assembly. The lens base is arranged on the multi-lens frame. The driving components are electrically connected with the circuit substrate and drive the focusing lens group to move in the direction of the central normal of the sensing surface. The utility model provides an optical imaging module overlaps with the central normal that makes the optical axis of each focus lens group and sensing face, makes light through each focus lens group in the holding hole and throws to the sensing face behind the light channel, ensures the imaging quality.
Description
Technical Field
The utility model belongs to the optical imaging field especially relates to an optical imaging module with a plurality of lens groups of focusing to have integrative many camera lens frames that take shape.
Background
In particular, a multi-lens camcorder having a plurality of lenses is required to be overcome, and therefore, whether to align the optical axis with the photosensitive element during assembly or manufacturing will have a significant impact on the imaging quality.
In addition, if the camera device has a focusing function, such as moving a lens for focusing, the assembly of all parts and the quality of the package are more difficult to control because the components are more complicated.
Further, in order to meet the requirement of higher-order photography, the camcorder will have more lenses, such as more than four lenses, so that it is important and necessary to solve the problem of good image quality when a plurality of lenses, such as at least two lenses, even more than four lenses, are combined, and therefore, an optical imaging module is needed to solve the above-mentioned known problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, the utility model provides an optical imaging module to make the optical axis of each focusing lens group and the central normal line of sensing face overlap, make light through each focusing lens group in the holding hole and through projecting to the sensing face behind the light path, ensure the imaging quality.
The utility model discloses a following mode realizes:
an optical imaging module includes a circuit assembly and a lens assembly. The circuit assembly comprises a circuit substrate, a plurality of image sensing assemblies, a plurality of signal transmission assemblies and a multi-lens frame. The circuit substrate includes a plurality of circuit contacts. Each image sensing assembly comprises a first surface and a second surface, wherein the first surface is connected with the circuit substrate, and the second surface is provided with a sensing surface and a plurality of image contacts. The signal conduction components are electrically connected between the circuit contacts on the circuit substrate and the image contacts of the image sensing components. The multi-lens frame can be manufactured in an integrated forming mode, covers the circuit substrate, surrounds the image sensing assembly and the signal transmission assembly, and is provided with a plurality of optical channels corresponding to the positions of the sensing surfaces of the image sensing assemblies. The lens assembly comprises a plurality of lens bases, a plurality of focusing lens groups and a plurality of driving assemblies. The lens base can be made of opaque material and has a containing hole penetrating through two ends of the lens base to make the lens base hollow, and the lens base is arranged on the multi-lens frame to make the containing hole and the optical channel communicated. Each focusing lens group is provided with at least two lenses with refractive power, arranged on the lens base and positioned in the accommodating hole, the imaging surface of each focusing lens group is positioned on the sensing surface, and the optical axis of each focusing lens group is overlapped with the central normal of the sensing surface, so that light rays pass through each focusing lens group in the accommodating hole and are projected to the sensing surface after passing through the optical channel. The plurality of driving assemblies are electrically connected with the circuit substrate and drive each focusing lens group to move in the direction of the central normal of the sensing surface. The focusing lens group satisfies the following conditions:
1.0≦f/HEP≦10.0；
0deg<HAF≦150deg；
0mm<PhiD≦18mm；
0< PhiA/PhiD ≦ 0.99; and
0.9≦2(ARE/HEP)≦2.0。
wherein f is the focal length of the focusing lens group; HEP is the diameter of an entrance pupil of the focusing lens group; HAF is half of the maximum viewing angle of the focusing lens group; PhiD is the maximum value of the minimum side length on the plane of the outer periphery of the lens base and vertical to the optical axis of the focusing lens group; PhiA is the maximum effective diameter of the lens surface of the focusing lens group closest to the imaging surface; the ARE is a contour curve length obtained along the contour of a lens surface with a starting point at the intersection of the optical axis with any lens surface of any lens in the focusing lens group and an ending point at a position at a vertical height from the entrance pupil diameter of the optical axis 1/2.
Preferably, the lens base includes a lens barrel and a lens holder, the lens barrel has an upper through hole penetrating through two ends of the lens barrel, the lens holder has a lower through hole penetrating through two ends of the lens holder, the lens barrel is disposed in the lens holder and located in the lower through hole, the upper through hole and the lower through hole are communicated to form a containing hole, the lens holder is fixed on the multi-lens frame, the image sensing assembly is located in the lower through hole, the upper through hole of the lens barrel faces a sensing surface of the image sensing assembly, the focusing lens group is disposed in the lens barrel and located in the upper through hole, the driving assembly drives the lens barrel to move in a central normal direction of the sensing surface relative to the lens holder, and PhiD indicates a maximum value of a minimum side length on a plane perpendicular to an optical axis of the focusing lens group and on an outer periphery of.
Preferably, the optical imaging module of the present invention comprises at least one data transmission line electrically connected to the circuit substrate for transmitting a plurality of sensing signals generated by the plurality of image sensing elements.
Preferably, the plurality of image sensing elements sense a plurality of color images.
Preferably, at least one image sensor device senses black and white images and at least one image sensor device senses color images.
Preferably, the optical imaging module of the present invention comprises a plurality of infrared filters, and the infrared filters are disposed in the lens base and located in the accommodating holes and above the image sensing assembly.
Preferably, the optical imaging module of the present invention comprises a plurality of infrared filters disposed in the lens barrel or the lens holder and located above the image sensing assembly.
Preferably, the utility model discloses an optical imaging module contains a plurality of infrared ray filters, and the lens base contains the light filter support, and the light filter support has a light filter through-hole that runs through light filter support both ends, and infrared ray filter sets up in the light filter support and lies in the light filter through-hole, and the light filter support corresponds the position of a plurality of light passageways, sets up on many camera lens frames, and makes infrared ray filter be located image sensing subassembly top.
Preferably, the lens base includes a lens barrel and a lens holder. The lens barrel is provided with an upper through hole penetrating through two ends of the lens barrel, the lens support is provided with a lower through hole penetrating through two ends of the lens support, and the lens barrel is arranged in the lens support and positioned in the lower through hole. The lens support is fixed on the optical filter support, and the lower through hole is communicated with the upper through hole and the optical filter through hole to jointly form the accommodating hole, so that the image sensing assembly is positioned in the optical filter through hole, and the upper through hole of the lens cone is opposite to the sensing surface of the image sensing assembly. In addition, the focusing lens group is arranged in the lens cone and positioned in the upper through hole.
Preferably, the material of the multi-lens frame comprises any one of a metal, a conductive material, or an alloy, or a combination thereof.
Preferably, the material of the multi-lens frame is any one of thermoplastic resin, industrial plastic, insulating material, or a combination thereof.
Preferably, the multi-lens frame comprises a plurality of lens holders, each lens holder has a light channel and a central axis, and the distance between the central axes of the lens holders is 2mm to 200 mm.
Preferably, the drive assembly comprises a voice coil motor.
Preferably, the multi-lens frame has an outer surface, a first inner surface and a second inner surface. The outer surface extends from the edge of the circuit substrate and has an inclination angle alpha with the central normal of the sensing surface, wherein alpha is between 1 and 30 degrees. The first inner surface is an inner surface of the light channel, and the first inner surface and a central normal of the sensing surface have an inclination angle beta, wherein beta is between 1 and 45 degrees. The second inner surface extends from the top surface of the circuit substrate to the light channel direction and has an inclination angle gamma with the central normal of the sensing surface, wherein gamma ranges from 1 DEG to 3 deg.
Preferably, the plurality of focusing lens groups are a first lens group and a second lens group respectively, and the view angle FOV of the second lens group is larger than that of the first lens group.
Preferably, the plurality of focusing lens groups are a first lens group and a second lens group respectively, and the focal length of the first lens group is larger than that of the second lens group.
Preferably, the optical imaging module has at least three focusing lens groups, which are a first lens group, a second lens group and a third lens group, respectively, and the viewing angle FOV of the second lens group is larger than that of the first lens group, and the viewing angle FOV of the second lens group is larger than 46 °, and each of the plurality of image sensing assemblies receiving the light of the first lens group and the second lens group senses the plurality of color images.
Preferably, the optical imaging module has at least three focusing lens sets, which are a first lens set, a second lens set and a third lens set, respectively, and the focal length of the first lens set is greater than that of the second lens set, and each of the plurality of image sensing assemblies corresponding to the light received by the first lens set and the light received by the second lens set senses the plurality of color images.
Preferably, the optical imaging module satisfies the following condition:
0< (TH1+ TH2)/HOI ≦ 0.95; wherein TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel; the HOI is the maximum imaging height perpendicular to the optical axis on the imaging plane.
Preferably, the optical imaging module satisfies the following condition:
0mm < TH1+ TH2 ≦ 1.5 mm; wherein TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel.
Preferably, the optical imaging module satisfies the following condition:
0< (TH1+ TH2)/HOI ≦ 0.95; wherein TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel; the HOI is the maximum imaging height perpendicular to the optical axis on the imaging plane.
Preferably, the optical imaging module satisfies the following condition:
0.9 ≦ ARS/EHD ≦ 2.0. The ARS is a length of a profile curve obtained along a profile of any lens surface of a focusing lens group by taking an intersection point of the lens surface and an optical axis as a starting point and taking a maximum effective radius of the lens surface as an end point. The EHD is the maximum effective radius of any surface of any lens in the focusing lens group.
Preferably, the following conditions are satisfied:
PLTA ≦ 100 μm; PSTA ≦ 100 μm; NLTA ≦ 100 μm; and NSTA ≦ 100 μm. SLTA ≦ 100 μm; SSTA ≦ 100 μm. Firstly, defining HOI as the maximum imaging height vertical to an optical axis on an imaging surface; PLTA is the transverse aberration of the longest working wavelength of visible light of the forward meridian plane light fan of the optical imaging module passing through an entrance pupil edge and incident on the imaging plane at 0.7 HOI; PSTA is the transverse aberration of the shortest visible light operating wavelength of a forward meridian plane light fan of the optical imaging module, which passes through the edge of an entrance pupil and is incident on the imaging plane at the position of 0.7 HOI; NLTA is the transverse aberration of the longest working wavelength of the visible light of the negative meridian plane light fan of the optical imaging module passing through the edge of an entrance pupil and being incident on the imaging plane at the position of 0.7 HOI; NSTA is the transverse aberration of the shortest visible light operating wavelength of the negative meridian plane light fan of the optical imaging module passing through the edge of an entrance pupil and being incident on the imaging plane at the position of 0.7 HOI; SLTA is the transverse aberration of the longest working wavelength of visible light of the sagittal plane light fan of the optical imaging module passing through the edge of the entrance pupil and incident on the imaging plane at 0.7 HOI; SSTA is the lateral aberration at 0.7HOI on the imaging plane through an entrance pupil edge for the shortest operating wavelength of visible light of the sagittal plane light fan of the optical imaging module.
Preferably, the focusing lens assembly includes four lens elements with refractive power, and the first lens element, the second lens element, the third lens element and the fourth lens element are arranged in order from an object side to an image side, and the focusing lens assembly satisfies the following conditions: 0.1 ≦ InTL/HOS ≦ 0.95. HOS is the distance between the object side surface of the first lens and the imaging surface on the optical axis. The InTL is the distance from the object side surface of the first lens to the image side surface of the fourth lens on the optical axis.
Preferably, the focusing lens assembly includes five lens elements with refractive power, and the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element are arranged in order from an object side to an image side, and the focusing lens assembly satisfies the following conditions: 0.1 ≦ InTL/HOS ≦ 0.95. HOS is the distance between the object side surface of the first lens and the imaging surface on the optical axis; the InTL is the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis.
Preferably, the focusing lens assembly includes six lens elements with refractive power, and the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element are arranged in order from an object side to an image side, and the focusing lens assembly satisfies the following conditions: 0.1 ≦ InTL/HOS ≦ 0.95. HOS is the distance between the object side surface of the first lens and the imaging surface on the optical axis; the InTL is the distance from the object side surface of the first lens to the image side surface of the sixth lens on the optical axis.
Preferably, the focusing lens assembly includes seven lenses having refractive power, and the focusing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, and satisfies the following condition 0.1 ≦ intil/HOS ≦ 0.95. HOS is the distance between the object side surface of the first lens and the imaging surface on the optical axis. The InTL is the distance from the object side surface of the first lens to the image side surface of the seventh lens on the optical axis.
Preferably, the optical imaging module comprises an aperture, and the aperture satisfies the following formula: 0.2 ≦ InS/HOS ≦ 1.1; InS is the distance between the diaphragm and the imaging surface on the optical axis; HOS is the distance from the lens surface of the focusing lens group which is farthest away from the imaging surface to the imaging surface on the optical axis.
In view of the above, the present invention provides an optical imaging module, which is applied to an electronic portable device, an electronic wearable device, an electronic monitoring device, an electronic information device, an electronic communication device, a machine vision device, an electronic device for a vehicle, and one of the groups.
Based on the above-mentioned purpose, the utility model provides an optical imaging module contains:
a circuit assembly, comprising:
a circuit substrate including a plurality of circuit contacts;
the image sensing device comprises a plurality of image sensing components, a circuit substrate and a plurality of image sensing units, wherein each image sensing component comprises a first surface and a second surface, the first surface is connected with the circuit substrate, and the second surface is provided with a sensing surface and a plurality of image contacts;
a plurality of signal conducting components electrically connected between the plurality of circuit contacts on the circuit substrate and the plurality of image contacts of each image sensing component; and
a lens assembly, comprising:
the lens bases are made of light-tight materials and provided with accommodating holes penetrating through two ends of the lens bases so that the lens bases are hollow, and the lens bases are arranged on the circuit substrate; and
the focusing lens groups are provided with at least two lenses with refractive power, arranged on the lens base and positioned in the accommodating holes, the imaging surfaces of the focusing lens groups are positioned on the sensing surface, the optical axes of the focusing lens groups are overlapped with the central normal of the sensing surface, and light rays are projected to the sensing surface after passing through the focusing lens groups in the accommodating holes; and
the driving components are electrically connected with the circuit substrate and drive the focusing lens groups to move in the direction of the central normal of the sensing surface; and
a multi-lens outer frame to which the lens bases are respectively fixed so as to be integrated;
wherein the focusing lens group satisfies the following conditions:
1.0≦f/HEP≦10.0；
0deg<HAF≦150deg；
0mm<PhiD≦18mm；
0< PhiA/PhiD ≦ 0.99; and
0.9≦2(ARE/HEP)≦2.0
wherein f is the focal length of the focusing lens group; HEP is the diameter of an entrance pupil of the focusing lens group; HAF is half of the maximum viewing angle of the focusing lens group; PhiD is the maximum value of the minimum side length on a plane which is perpendicular to the optical axis of the focusing lens group and is arranged at the outer periphery of the lens base; PhiA is the maximum effective diameter of the lens surface of the focusing lens group closest to the imaging surface; the ARE is a contour curve length obtained along a contour of any one of the lens surfaces in the focusing lens group, starting at an intersection of the lens surface with the optical axis and ending at a position at a vertical height from the optical axis 1/2 entrance pupil diameter. In view of the above, the present invention provides a method for manufacturing an optical imaging module, comprising the following method steps:
a circuit assembly is provided and includes a circuit substrate, a plurality of image sensing assemblies and a plurality of signal conducting assemblies.
And electrically connecting the signal conduction components between the circuit contacts on the circuit substrate and the image contacts on the second surface of each image sensing component.
The multi-lens frame is integrally formed, and a plurality of light channels are formed at positions corresponding to the sensing surfaces on the second surface of each image sensing assembly.
The multi-lens frame is covered on the circuit assembly and surrounds the plurality of image sensing assemblies and the plurality of signal transmission assemblies of the circuit assembly.
A lens assembly is provided, and the lens assembly includes a lens base, a plurality of focusing lens groups and a plurality of driving assemblies.
The lens base is made of opaque material, and a containing hole is formed on the lens base, so that the containing hole penetrates through two ends of the lens base to make the lens base hollow.
The lens base is arranged on the multi-lens frame so that the accommodating hole is communicated with the optical channel.
At least two lenses with refractive power are arranged in each focusing lens group, and each focusing lens group meets the following conditions:
1.0≦f/HEP≦10.0；
0deg<HAF≦150deg；
0mm<PhiD≦18mm；
0< PhiA/PhiD ≦ 0.99; and
0≦2(ARE/HEP)≦2.0
in the above condition, f is the focal length of the focusing lens assembly; HEP is the diameter of an entrance pupil of the focusing lens group; HAF is half of the maximum viewing angle of the focusing lens group; PhiD is the maximum value of the minimum side length on the plane of the outer periphery of the lens base and vertical to the optical axis of the focusing lens group; PhiA is the maximum effective diameter of the lens surface of the focusing lens group closest to the imaging surface; the ARE is a contour curve length obtained along the contour of a lens surface with a starting point at the intersection of the optical axis with any lens surface of any lens in the focusing lens group and an ending point at a position at a vertical height from the entrance pupil diameter of the optical axis 1/2.
Each focusing lens group is arranged on the lens base and positioned in the containing hole.
Adjusting the imaging surface of each focusing lens group of the lens assembly to enable the imaging surface of each focusing lens group of the lens assembly to be positioned on the sensing surface of each image sensing assembly, and enabling the optical axis of each focusing lens group to be overlapped with the center normal of the sensing surface.
Each driving component is electrically connected with the circuit substrate and coupled with each focusing lens group so as to drive each focusing lens group to move in the direction of the central normal of the sensing surface. The embodiment of the present invention relates to the following terms and their code numbers of the lens parameters, which are used as the reference for the following description:
lens parameters related to length or height
The maximum imaging height on the imaging surface of the optical imaging module is represented by HOI; the height of the optical imaging module (i.e. the distance on the optical axis from the object side surface of the first lens to the imaging surface) is represented by HOS; the distance between the object side surface of the first lens and the image side surface of the last lens of the optical imaging module is represented by InTL; the distance between a fixed diaphragm (aperture) of the optical imaging module and an imaging surface is represented by InS; the distance between the first lens and the second lens of the optical imaging module is denoted (exemplified) by IN 12; the thickness of the first lens of the optical imaging module on the optical axis is indicated by TP1 (for example).
Material dependent lens parameters
The abbe number of the first lens of the optical imaging module is denoted (exemplified) by NA 1; the refractive law of the first lens is denoted by Nd1 (for example).
Viewing angle dependent lens parameters
The viewing angle is denoted AF; half of the viewing angle is denoted by HAF; the chief ray angle is denoted MRA.
Lens parameters related to entrance and exit pupils
The entrance pupil diameter of the optical imaging module is denoted by HEP; the maximum Effective radius of any surface of a single lens refers to the vertical height between the intersection point (Effective halo diameter; EHD) of the light rays incident on the lens surface at the maximum viewing angle of the system passing through the extreme edge of an entrance pupil and the optical axis. For example, the maximum effective radius of the object-side surface of the first lens is indicated by EHD11 and the maximum effective radius of the image-side surface of the first lens is indicated by EHD 12. The maximum effective radius of the object-side surface of the second lens is indicated by EHD21 and the maximum effective radius of the image-side surface of the second lens is indicated by EHD 22. The maximum effective radius of any surface of the remaining lenses in the optical imaging module is expressed and so on. The maximum effective diameter of the image side surface of the lens closest to the imaging surface in the optical imaging module is denoted by PhiA, and satisfies the conditional expression PhiA of 2 times EHD. The effective radius (IHD) of any surface of a single lens refers to the surface segment extending away from the optical axis from the cut-off point of the maximum effective radius of the same surface (if the surface is aspheric, the end point of the surface with aspheric coefficients). The maximum diameter of the image side surface of the lens closest to the imaging plane in the optical imaging module is denoted by PhiB, and satisfies the conditional expression PhiB of 2 times (maximum effective radius EHD + maximum ineffective radius IHD) of PhiA +2 times (maximum ineffective radius IHD).
The maximum effective diameter of the image side surface of the lens closest to the imaging surface (i.e., image space) in the optical imaging module is also referred to as the optical exit pupil, which is denoted by PhiA, PhiA3 if the optical exit pupil is located on the image side surface of the third lens, PhiA4 if the optical exit pupil is located on the image side surface of the fourth lens, PhiA5 if the optical exit pupil is located on the image side surface of the fifth lens, PhiA6 if the optical exit pupil is located on the image side surface of the sixth lens, and so on if the optical imaging module has lenses with different numbers of refractive power pieces, the optical exit pupil is expressed. The pupil-to-magnification ratio of the optical imaging module is represented by PMR, and satisfies the conditional expression PMR ═ PhiA/HEP.
Parameters relating to lens surface profile arc length and surface profile
The length of the maximum effective radius profile curve of any surface of a single lens refers to that the intersection point of the surface of the lens and the optical axis of the optical imaging module is a starting point, the curve arc length between the two points is the length of the maximum effective radius profile curve from the starting point along the surface profile of the lens to the end point of the maximum effective radius, and is expressed by ARS. For example, the profile curve length for the maximum effective radius of the object-side surface of the first lens is shown as ARS11 and the profile curve length for the maximum effective radius of the image-side surface of the first lens is shown as ARS 12. The profile curve length for the maximum effective radius of the object-side surface of the second lens is denoted as ARS21 and the profile curve length for the maximum effective radius of the image-side surface of the second lens is denoted as ARS 22. The length of the profile curve of the maximum effective radius of any surface of the remaining lenses in the optical imaging module is expressed in the same way.
The contour curve length of 1/2 entrance pupil diameter (HEP) of any surface of a single lens refers to the intersection point of the surface of the lens and the optical axis of the optical imaging module as a starting point, the curve arc length between the two points is the contour curve length of 1/2 entrance pupil diameter (HEP) from the starting point along the surface contour of the lens to the coordinate point of the vertical height of the surface from the optical axis 1/2 entrance pupil diameter, and is expressed by ARE. For example, the contour curve length for the 1/2 entrance pupil diameter (HEP) of the object-side surface of the first lens is denoted as ARE11, and the contour curve length for the 1/2 entrance pupil diameter (HEP) of the image-side surface of the first lens is denoted as ARE 12. The contour curve length for the 1/2 entrance pupil diameter (HEP) of the object-side surface of the second lens is denoted as ARE21, and the contour curve length for the 1/2 entrance pupil diameter (HEP) of the image-side surface of the second lens is denoted as ARE 22. The profile curve length representation of 1/2 entrance pupil diameter (HEP) for either surface of the remaining lenses in the optical imaging module, and so on.
Parameters related to lens profile depth
The distance between the intersection point of the object-side surface of the sixth lens element on the optical axis and the end point of the maximum effective radius of the object-side surface of the sixth lens element, which is horizontal to the optical axis, is represented by InRS61 (depth of maximum effective radius); the distance between the intersection point of the image-side surface of the sixth lens element on the optical axis and the end point of the maximum effective radius of the image-side surface of the sixth lens element, which is horizontal to the optical axis, is represented by InRS62 (depth of maximum effective radius). The depth (amount of depression) of the maximum effective radius of the object-side or image-side surface of the other lens is expressed in a manner comparable to that described above.
Parameters relating to lens surface shape
The critical point C refers to a point on the surface of the particular lens that is tangent to a tangent plane perpendicular to the optical axis, except for the intersection with the optical axis. For example, the perpendicular distance between the critical point C51 on the object-side surface of the fifth lens element and the optical axis is HVT51 (for example), the perpendicular distance between the critical point C52 on the image-side surface of the fifth lens element and the optical axis is HVT52 (for example), the perpendicular distance between the critical point C61 on the object-side surface of the sixth lens element and the optical axis is HVT61 (for example), and the perpendicular distance between the critical point C62 on the image-side surface of the sixth lens element and the optical axis is HVT62 (for example). The representation of the critical point on the object-side or image-side surface of the other lens and its perpendicular distance from the optical axis is comparable to the above.
The inflection point on the object-side surface of the seventh lens closest to the optical axis is IF711, the amount of this point depression is SGI711 (for example), SGI711 is the horizontal displacement distance parallel to the optical axis between the intersection point of the object-side surface of the seventh lens on the optical axis and the inflection point on the object-side surface of the seventh lens closest to the optical axis, and the vertical distance between this point of IF711 and the optical axis is HIF711 (for example). The inflection point on the image-side surface of the seventh lens closest to the optical axis is IF721, the amount of this point depression SGI721 (for example), SGI711 is the horizontal displacement distance parallel to the optical axis between the intersection point of the image-side surface of the seventh lens on the optical axis and the inflection point on the image-side surface of the seventh lens closest to the optical axis, and the vertical distance between this point of IF721 and the optical axis is 721 HIF (for example).
The second inflection point on the object-side surface of the seventh lens closer to the optical axis is IF712, the amount of this point depression SGI712 (illustrated), SGI712 is the horizontal displacement distance parallel to the optical axis between the intersection point of the object-side surface of the seventh lens on the optical axis and the second inflection point on the object-side surface of the seventh lens closer to the optical axis, and the vertical distance between this point of the IF712 and the optical axis is HIF712 (illustrated). An inflection point on the image-side surface of the seventh lens element second near the optical axis is IF722, a depression amount SGI722 (for example) of the point is a horizontal displacement distance parallel to the optical axis between the SGI722, that is, an intersection point of the image-side surface of the seventh lens element on the optical axis and the inflection point on the image-side surface of the seventh lens element second near the optical axis, and a vertical distance between the point of the IF722 and the optical axis is HIF722 (for example).
The third inflection point on the object-side surface of the seventh lens near the optical axis is IF713, the depression amount SGI713 (for example) of the third inflection point is SGI713, i.e., the horizontal displacement distance parallel to the optical axis between the intersection point of the object-side surface of the seventh lens on the optical axis and the third inflection point on the object-side surface of the seventh lens near the optical axis, and the vertical distance between the point of the IF713 and the optical axis is HIF713 (for example). The third inflection point on the image-side surface of the seventh lens element near the optical axis is IF723, the depression amount SGI723 (for example) is a horizontal displacement distance parallel to the optical axis between the SGI723, that is, the intersection point of the image-side surface of the seventh lens element on the optical axis and the third inflection point on the image-side surface of the seventh lens element near the optical axis, and the vertical distance between the point of the IF723 and the optical axis is HIF723 (for example).
The fourth inflection point on the object-side surface of the seventh lens near the optical axis is IF714, the depression amount SGI714 (for example) is the horizontal displacement distance parallel to the optical axis between SGI714, i.e., the intersection point of the object-side surface of the seventh lens on the optical axis, and the fourth inflection point on the object-side surface of the seventh lens near the optical axis, and the vertical distance between the point of IF714 and the optical axis is HIF714 (for example). A fourth inflection point on the image-side surface of the seventh lens element near the optical axis is IF724, the depression amount SGI724 (for example) is a horizontal displacement distance parallel to the optical axis between the SGI724, i.e., an intersection point of the image-side surface of the seventh lens element on the optical axis, and the fourth inflection point on the image-side surface of the seventh lens element near the optical axis, and a vertical distance between the point of the IF724 and the optical axis is HIF724 (for example).
The representation of the inflection points on the object-side surface or the image-side surface of the other lens and the vertical distance between the inflection points and the optical axis or the amount of the depression of the inflection points is compared with the representation in the foregoing.
Aberration-related variable
Optical Distortion (Optical Distortion) of the Optical imaging module is expressed in ODT; its TV distortion (TVDistortion) is expressed in TDT and can further define the degree of aberration shift described between 50% and 100% imaging field of view; the spherical aberration offset is expressed as DFS; the coma aberration offset is denoted by DFC.
The utility model provides an optical imaging module, the object side or the image side of its sixth lens are provided with one and turn over the curved point, and each visual field of effective adjustment is incident in the angle of sixth lens to revise to optics distortion and TV distortion. In addition, the surface of the sixth lens has good optical path adjusting capability so as to improve the imaging quality.
The profile curve length of any surface of a single lens in the maximum effective radius range affects the ability of the surface to correct aberrations and optical path differences between the light beams of each field, and the longer the profile curve length, the higher the aberration correction ability, but at the same time, the manufacturing difficulty is increased, so that the profile curve length of any surface of a single lens in the maximum effective radius range must be controlled, and particularly, the proportional relationship (ARS/TP) between the profile curve length (ARS) of the surface in the maximum effective radius range and the Thickness (TP) of the lens on the optical axis to which the surface belongs must be controlled. For example, the length of the profile curve of the maximum effective radius of the object-side surface of the first lens is represented by ARS11, the thickness of the first lens on the optical axis is TP1, the ratio of the two is ARS11/TP1, the length of the profile curve of the maximum effective radius of the image-side surface of the first lens is represented by ARS12, and the ratio of the length of the profile curve of the maximum effective radius of the image-side surface of the first lens to TP1 is ARS12/TP 1. The length of the profile curve of the maximum effective radius of the object-side surface of the second lens is represented by ARS21, the thickness of the second lens on the optical axis is TP2, the ratio of the two is ARS21/TP2, the length of the profile curve of the maximum effective radius of the image-side surface of the second lens is represented by ARS22, and the ratio of the length of the profile curve of the maximum effective radius of the image-side surface of the second lens to TP2 is ARS22/TP 2. The relationship between the length of the profile curve of the maximum effective radius of any surface of the rest of the lenses in the optical imaging module and the Thickness (TP) of the surface of the lens on the optical axis is represented by the way of analogy. Further, the optical imaging module satisfies the following conditions: 0.9 ≦ ARS/EHD ≦ 2.0.
The transverse aberration of the longest visible operating wavelength of the forward meridian plane light fan of the optical imaging module passing through the edge of the entrance pupil and incident on the imaging plane at 0.7HOI is denoted by PLTA; the lateral aberration of the optical imaging module at 0.7HOI of the shortest operating wavelength of visible light passing through the entrance pupil edge and incident on the imaging plane is denoted by PSTA. The longest working wavelength of visible light of a negative meridian plane light fan of the optical imaging module passes through the edge of the entrance pupil and is incident on the imaging plane with the transverse aberration at 0.7HOI, which is expressed by NLTA; the transverse aberration of the optical imaging module at 0.7HOI, which is incident on the imaging plane through the edge of the entrance pupil and has the shortest visible light operating wavelength of the negative meridian plane light fan, is represented by NSTA; the lateral aberration of the optical imaging module at 0.7HOI of the longest operating wavelength of visible light of the sagittal plane light fan passing through the edge of the entrance pupil and incident on the imaging plane is denoted by SLTA; the transverse aberration at 0.7HOI incident on the imaging plane at the shortest operating wavelength of visible light of the sagittal plane light fan of the optical imaging module passing through the entrance pupil edge is denoted SSTA. Further, the optical imaging module satisfies the following conditions: PLTA ≦ 100 μm; PSTA ≦ 100 μm; NLTA ≦ 100 μm; NSTA ≦ 100 μm; SLTA ≦ 100 μm; SSTA ≦ 100 μm; | TDT | is < 250%; 0.1 ≦ InTL/HOS ≦ 0.95; and 0.2 ≦ InS/HOS ≦ 1.1.
The modulation conversion contrast transfer rate of visible light at the optical axis of the imaging surface at a spatial frequency of 110cycles/mm is represented by MTFQ 0; the modulation conversion contrast transfer rate of visible light at a spatial frequency of 110cycles/mm at 0.3HOI on the imaging plane is denoted by MTFQ 3; the modulation transition contrast transfer ratio for visible light at a spatial frequency of 110cycles/mm at 0.7HOI on the imaging plane is denoted MTFQ 7. Further, the optical imaging module satisfies the following conditions: MTFQ0 ≧ 0.2; MTFQ3 ≧ 0.01; and MTFQ7 ≧ 0.01.
The profile length of any surface of the single lens in the 1/2 entrance pupil diameter (HEP) height range particularly affects the ability of the surface to correct aberrations in the shared region of each field of view and the optical path difference between the light rays in each field of view, and the longer the profile length, the greater the ability to correct aberrations, while also increasing manufacturing difficulties, so that the ratio (ARE/TP) between the profile length of any surface of the single lens in the 1/2 entrance pupil diameter (HEP) height range, particularly between the profile length (ARE) of the surface in the 1/2 entrance pupil diameter (HEP) height range and the Thickness (TP) of the lens on the optical axis to which the surface belongs, must be controlled. For example, the length of the profile curve of the 1/2 entrance pupil diameter (HEP) height of the object-side surface of the first lens is ARE11, the thickness of the first lens on the optical axis is TP1, the ratio of the two is ARE11/TP1, the length of the profile curve of the 1/2 entrance pupil diameter (HEP) height of the image-side surface of the first lens is ARE12, and the ratio of the length of the profile curve to the TP1 is ARE12/TP 1. The length of the profile curve of the 1/2 entrance pupil diameter (HEP) height of the object-side surface of the second lens is represented by ARE21, the thickness of the second lens on the optical axis is TP2, the ratio of the two is ARE21/TP2, the length of the profile curve of the 1/2 entrance pupil diameter (HEP) height of the image-side surface of the second lens is represented by ARE22, and the ratio of the length of the profile curve to TP2 is ARE22/TP 2. The relationship between the length of the profile curve of 1/2 entrance pupil diameter (HEP) height of any surface of the remaining lenses in the optical imaging module and the Thickness (TP) of the lens to which the surface belongs on the optical axis is expressed in a similar way.
Drawings
In order to clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic configuration diagram of an embodiment of the present invention;
fig. 2 is a schematic diagram of a multi-lens frame according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating lens parameters according to an embodiment of the present invention;
fig. 4 is a first schematic implementation of an embodiment of the invention;
fig. 5 is a second schematic implementation of an embodiment of the invention;
fig. 6 is a third schematic implementation of an embodiment of the invention;
fig. 7 is a fourth schematic implementation of an embodiment of the invention;
fig. 8 is a fifth embodiment of an embodiment of the invention;
fig. 9 is a sixth implementation schematic of an embodiment of the invention;
fig. 10 is a seventh implementation schematic of the embodiment of the invention;
fig. 11 is an eighth implementation schematic diagram of an embodiment of the invention;
fig. 12 is a schematic diagram of a ninth implementation of the embodiment of the invention;
fig. 13 is a schematic diagram of a tenth implementation of the embodiment of the present invention;
fig. 14 is an eleventh implementation schematic of an embodiment of the invention;
fig. 15 is a twelfth implementation schematic of an embodiment of the invention;
fig. 16 is a thirteenth implementation schematic of an embodiment of the invention;
fig. 17 is a fourteenth implementation schematic diagram of an embodiment of the invention;
fig. 18 is a fifteenth implementation schematic of an embodiment of the invention;
fig. 19 is a sixteenth implementation schematic of an embodiment of the invention;
fig. 20 is a schematic diagram of a first optical embodiment of an embodiment of the present invention;
fig. 21 is a graph showing the spherical aberration, astigmatism and optical distortion of the first optical embodiment of the present invention from left to right in sequence according to the embodiment of the present invention;
fig. 22 is a schematic diagram of a second optical embodiment of an embodiment of the present invention;
fig. 23 is a graph showing, in order from left to right, spherical aberration, astigmatism and optical distortion of a second optical embodiment of the present invention;
fig. 24 is a schematic diagram of a third optical embodiment of an embodiment of the present invention;
fig. 25 is a graph showing, in order from left to right, spherical aberration, astigmatism and optical distortion of a third optical embodiment of the present invention;
fig. 26 is a schematic diagram of a fourth optical embodiment of an embodiment of the present invention;
fig. 27 is a graph showing spherical aberration, astigmatism and optical distortion of a fourth optical embodiment of the present invention from left to right in sequence according to the embodiment of the present invention;
fig. 28 is a schematic diagram of a fifth optical embodiment of an embodiment of the present invention;
fig. 29 is a graph showing, in order from left to right, spherical aberration, astigmatism and optical distortion of a fifth optical embodiment of the present invention;
fig. 30 is a schematic diagram of a sixth optical embodiment of an embodiment of the present invention;
fig. 31 is a graph showing spherical aberration, astigmatism and optical distortion of a sixth optical embodiment of the present invention from left to right in sequence according to an embodiment of the present invention;
FIG. 32 is a schematic view of an optical imaging module according to an embodiment of the present invention being used in a mobile communication device;
fig. 33 is a schematic view of an optical imaging module according to an embodiment of the present invention being used in a mobile information device;
fig. 34 is a schematic diagram of an optical imaging module according to an embodiment of the present invention being used in a smart watch;
fig. 35 is a schematic diagram of an optical imaging module according to an embodiment of the present invention used in an intelligent headset;
fig. 36 is a schematic view of an optical imaging module according to an embodiment of the present invention used in a security monitoring device;
fig. 37 is a schematic view illustrating an optical imaging module according to an embodiment of the present invention being used in an imaging apparatus for a vehicle;
fig. 38 is a schematic view of an optical imaging module of an embodiment of the present invention in use with an unmanned aerial vehicle device;
fig. 39 is a schematic diagram of an optical imaging module according to an embodiment of the present invention being used in an extreme motion imaging apparatus;
fig. 40 is a schematic flow diagram of an embodiment of the invention;
fig. 41 is a seventeenth implementation schematic diagram of an embodiment of the present invention;
fig. 42 is a schematic diagram of an eighteenth implementation of an embodiment of the invention;
fig. 43 is a nineteenth implementation schematic diagram of the embodiment of the present invention.
The reference numbers illustrate:
| S101～S111 | method of producing a |
| 71 | |
| 72 | |
| 73 | Intelligent watch |
| 74 | Intelligent head-mounted device |
| 75 | |
| 76 | |
| 77 | Unmanned |
| 78 | Extreme motion imaging device |
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1 to 4, 7 and 9 to 12, the optical imaging module of the present invention includes a circuit assembly 100 and a lens assembly 200. The circuit assembly 100 includes a circuit substrate 120, a plurality of image sensors 140, a plurality of signal conductors 160, and a multi-lens frame 180; lens assembly 200 includes a plurality of lens bases 220, a plurality of focusing lens groups 240, and a plurality of driving assemblies 260.
The circuit substrate 120 includes a plurality of circuit contacts 122, and each image sensor 140 includes a first surface 142 and a second surface 144, where a maximum value of a minimum side length of the image sensor 140 on a plane perpendicular to the optical axis is LS. The first surface 142 is connected to the circuit substrate 120, and the second surface 144 has a sensing surface 1441 thereon. The signal conducting elements 160 are electrically connected between the circuit contacts 122 of the circuit substrate 120 and the image contacts 146 of the image sensing elements 140. In one embodiment, the signal transmission element 160 is made of gold wire, flexible circuit board, pogo pin, solder ball, bump or a combination thereof.
In addition, the multi-lens frame 180 may be integrally formed, for example, by molding, and is covered on the circuit substrate 120, and surrounds the image sensing elements 140 and the signal transmission elements 160, and has a plurality of light channels 182 corresponding to the sensing surfaces 1441 of the image sensing elements 140.
The lens bases 220 can be made of opaque material, and have a receiving hole 2201 penetrating through two ends of the lens base 220 to make the lens base 220 hollow, and the lens base 220 is disposed on the multi-lens frame 180 to make the receiving hole 2201 and the optical channel 182 communicate. In addition, in an embodiment, the reflectivity of the multi-lens frame 180 in the light wavelength range of 420-660nm is less than 5%, so that the influence of stray light caused by reflection or other factors on the image sensor 140 after the light enters the light channel 182 is avoided.
Further, in an embodiment, the material of the multi-lens frame 180 includes any one or a combination of metal, conductive material or alloy, thereby increasing heat dissipation efficiency or reducing static electricity, so as to make the operation of the image sensor 140 and the focusing lens assembly 240 efficient.
Further, in an embodiment, the multi-lens frame 180 is made of any one or a combination of thermoplastic resin, industrial plastic, and insulating material, so as to have the effects of easy processing, light weight, and efficient operation of the image sensor assembly 140 and the focusing lens assembly 240.
In addition, in an embodiment, as shown in fig. 2, the multi-lens frame 180 includes a plurality of lens holders 181, each lens holder 181 has a light channel 182 and a central axis, and the distance between the central axes of the lens holders 181 is between 2mm and 200mm, so that as shown in fig. 2 and 15, the distance between the lens holders 181 is adjusted in this range.
In addition, in an embodiment, as shown in fig. 13 and 14, the multi-lens frame 180 may be manufactured by molding, in which the mold is divided into a mold fixing side 503 and a mold moving side 502, and when the mold moving side 502 is covered on the mold fixing side 503, a material is poured into the mold through the injection gate 501 to form the multi-lens frame 180.
The multi-lens frame 180 has an outer surface 184, a first inner surface 186 and a second inner surface 188, the outer surface 184 extends from the edge of the circuit substrate 120 and has an inclination angle α with the central normal of the sensing surface 1441, and α ranges from 1 ° to 30 °. The first inner surface 186 is an inner surface of the optical channel 182, and the first inner surface 186 and the central normal of the sensing surface 1441 have an inclination angle β, β is between 1 ° and 45 °, and the second inner surface 188 extends from the top surface of the circuit substrate 120 to the optical channel 182 direction, and has an inclination angle γ, γ is between 1 ° and 3 °, and by setting the inclination angles α, β and γ, the occurrence of poor quality of the multi-lens frame 180, such as poor release characteristics or "flash", when the movable mold side 502 is separated from the fixed mold side 503 is reduced.
In addition, in another embodiment, the multi-lens frame 180 can be integrally formed in a 3D printing manner, and the tilt angles α, β and γ can be formed according to the requirement, for example, the tilt angles α, β and γ can improve the structural strength, reduce the generation of stray light, and the like.
Each focusing lens group 240 has at least two lenses 2401 with refractive power, and is disposed on the lens base 220 and located in the accommodating hole 2201, an imaging surface of each focusing lens group 240 is located on the sensing surface 1441, and an optical axis of each focusing lens group 240 overlaps with a central normal of the sensing surface 1441, so that light passes through each focusing lens group 240 in the accommodating hole 2201 and is projected to the sensing surface 1441 through the light channel 182, thereby ensuring imaging quality. In addition, the maximum diameter of the image side surface of the lens of the focusing lens group 240 closest to the imaging surface is denoted by PhiB, and the maximum effective diameter (also called as optical exit pupil) of the image side surface of the lens closest to the imaging surface (i.e. image space) in the focusing lens group 240 can be denoted by PhiA.
Each driving element 260 is electrically connected to the circuit substrate 120 and drives each focusing lens assembly 240 to move in the direction of the center normal of the sensing surface 1441, and in an embodiment, the driving element 260 includes a voice coil motor to drive each focusing lens assembly 240 to move in the direction of the center normal of the sensing surface 1441.
And each focusing lens group 240 satisfies the following conditions:
1.0≦f/HEP≦10.0；
0deg<HAF≦150deg；
0mm<PhiD≦18mm；
0< PhiA/PhiD ≦ 0.99; and
0≦2(ARE/HEP)≦2.0
f is the focal length of the focusing lens group 240; HEP is the entrance pupil diameter of focusing lens group 240; HAF is half of the maximum viewing angle of focusing lens group 240; PhiD is the maximum value of the minimum side length on the plane perpendicular to the optical axis of focusing lens group 240 and at the outer periphery of the lens base; PhiA is the maximum effective diameter of the lens surface of the focusing lens group 240 closest to the imaging plane; the ARE is a contour curve length obtained along the contour of a lens surface starting at the intersection of the optical axis with any lens surface of any lens of the focusing lens group 240 and ending at a position at a vertical height from the entrance pupil diameter of the optical axis 1/2.
In one embodiment, as shown in fig. 3 to 7, the lens base 220 includes a lens barrel 222 and a lens holder 224, the lens barrel 222 has an upper through hole 2221 penetrating both ends of the lens barrel 222, the lens holder 224 has a lower through hole 2241 penetrating both ends of the lens holder 224 and has a predetermined wall thickness TH1, and a maximum value of a minimum side length on a plane perpendicular to the optical axis of the outer periphery of the lens holder 224 is denoted by PhiD.
The lens barrel 222 is disposed in the lens holder 224 and located in the lower through hole 2241, and has a predetermined wall thickness TH2, and the maximum diameter of the outer periphery thereof on the plane perpendicular to the optical axis is PhiC, so that the upper through hole 2221 and the lower through hole 2241 are communicated to form the accommodating hole 2201, the lens holder 224 is fixed on the multi-lens frame 180, so that the image sensor 140 is located in the lower through hole 2241, and the upper through hole 2221 of the lens barrel 222 faces the sensing surface 1441 of the image sensor 140, the focusing lens group 240 is disposed in the lens barrel 222 and located in the upper through hole 2221, and the driving unit 260 drives the lens barrel 222 to move in the center normal direction of the sensing surface 1441 relative to the lens holder 224, and PhiD is the maximum value of the minimum side length of the outer periphery of the lens holder 224 on the plane perpendicular to the optical axis of the focusing lens group 240.
In one embodiment, the optical imaging module 10 includes at least one data transmission line 400 electrically connected to the circuit substrate 120 and transmitting a plurality of sensing signals generated by each of the plurality of image sensing elements 140.
As shown in fig. 9 and 11, a single data transmission line 400 may be used to transmit a plurality of sensing signals generated by a plurality of image sensing elements 140 of the optical imaging module 10 with dual lens, triple lens, array type or various multi-lens.
In another embodiment, as shown in fig. 10 and 12, a plurality of data transmission lines 400 may also be provided, for example, the data transmission lines 400 are separately arranged to transmit a plurality of sensing signals generated by a plurality of image sensing elements 140 of the optical imaging module 10 with a dual lens, a triple lens, a group type or various multi-lens.
In addition, in an embodiment, the plurality of image sensing elements 140 sense a plurality of color images, therefore, the optical imaging module 10 of the present invention has the functions of recording color images and color films, and in another embodiment, the at least one image sensing element 140 senses a plurality of black-and-white images, and the at least one image sensing element 140 senses a plurality of color images, therefore, the optical imaging module 10 of the present invention senses a plurality of black-and-white images and is matched with the image sensing element 140 for sensing a plurality of color images to obtain more image details, light sensitivity, etc. of the target object to be recorded, so that the image or film generated by the operation has higher quality.
In an embodiment, as shown in fig. 3 to 8 and 15 to 19, the optical imaging module 10 includes an infrared filter 300, and the infrared filter 300 is disposed in the lens base 220 and located in the containing hole 2201 and above the image sensing element 140 to filter infrared rays and avoid an influence of the infrared rays on a sensing surface 1441 of the image sensing element 140. In one embodiment, the infrared filter 300 is disposed in the lens barrel 222 or the lens holder 224 and above the image sensor 140, as shown in fig. 5.
In another embodiment, as shown in fig. 6, the lens base 220 includes a filter holder 226, the filter holder 226 has a filter through hole 2261 penetrating through two ends of the filter holder 226, and the infrared filter 300 is disposed in the filter holder 226 and located in the filter through hole 2261, and the filter holder 226 is disposed on the multi-lens frame 180 corresponding to the positions of the plurality of optical channels 182, so that the infrared filter 300 is located above the image sensing assembly 140 to filter the infrared, thereby avoiding the influence of the infrared on the sensing surface 1441 of the image sensing assembly 140.
Therefore, the lens base 220 includes the filter holder 226, and the lens barrel 222 has an upper through hole 2221 penetrating through both ends of the lens barrel 222, in the case where the lens holder 224 has a lower through hole 2241 penetrating both ends of the lens holder 224, the lens barrel 222 is disposed in the lens holder 224 and located in the lower through hole 2241, the lens holder 224 is fixed on the filter holder 226, and the lower through hole 2241 is communicated with the upper through hole 2221 and the filter through hole 2261 to form the accommodating hole 2201, so that the image sensor assembly 140 is located in the filter through hole 2261, and the upper through hole 2221 of the lens barrel 222 faces the sensing surface 1441 of the image sensing element 140, the focusing lens assembly 240 is disposed in the lens barrel 222 and located in the upper through hole 2221, such that the infrared filter 300 is located above the image sensor assembly 140, so as to filter the infrared rays entering from the focusing lens assembly 240 and avoid the influence of the infrared rays on the sensing surface 1441 of the image sensing assembly 140.
In an embodiment, the present invention is an optical imaging module 10 with two lenses, so the focusing lens groups 240 are the first lens group and the second lens group respectively, and the viewing angle FOV of the second lens group is greater than the first lens group 2411, and the viewing angle FOV of the second lens group is greater than 46 °, so the second lens group is a wide angle lens group.
The focusing lens assemblies 240 can be a first lens assembly and a second lens assembly respectively, and the focal length of the first lens assembly is greater than that of the second lens assembly, if a conventional 35mm photograph (viewing angle is 46 degrees) is taken as a reference, the focal length is 50mm, and when the focal length of the first lens assembly is greater than 50mm, the first lens assembly is a long-focus lens assembly. The utility model discloses the preferred person, can be to the long CMOS sensor (the visual angle is 70 degrees) of 4.6mm of diagonal as the benchmark, its focus is about 3.28mm, and the focus when first lens group is greater than 3.28mm, and first lens group is long focus lens group.
In one embodiment, the present invention can be a three-lens optical imaging module 10, and therefore the optical imaging module 10 can have at least three focusing lens sets 240, which can be a first lens set, a second lens set and a third lens set respectively. The focusing lens assemblies 240 are respectively a first lens assembly, a second lens assembly 2421 and a third lens assembly, the angle of view FOV of the second lens assembly can be larger than that of the first lens assembly, the angle of view FOV of the second lens assembly is larger than 46 °, and each of the image sensing assemblies 140 receiving the light of the first lens assembly 2411 and the second lens assembly 2421 senses a plurality of color images, while the image sensing assembly 140 corresponding to the third lens assembly can sense a plurality of color images or a plurality of black and white images according to the requirement.
In an embodiment, the present invention provides an optical imaging module 10 with three lenses, so that the optical imaging module 10 has at least three focusing lens sets 240, which are respectively a first lens set, a second lens set and a third lens set, the focusing lens sets 240 are respectively the first lens set, the second lens set and the third lens set, and the focal length of the first lens set can be larger than the second lens set, and the image sensing assemblies 140 corresponding to the light beams of the first lens set and the second lens set sense a plurality of color images, and the image sensing assembly 140 corresponding to the third lens set can sense a plurality of color images or a plurality of black and white images according to the requirement.
In one embodiment, the optical imaging module 10 further satisfies the following condition:
0< (TH1+ TH2)/HOI ≦ 0.95; TH1 is the maximum thickness of the lens holder 224; TH2 is the minimum thickness of the lens barrel 222; the HOI is the maximum imaging height perpendicular to the optical axis on the imaging plane.
In one embodiment, the optical imaging module 10 further satisfies the following condition:
0mm < TH1+ TH2 ≦ 1.5 mm; TH1 is the maximum thickness of the lens holder 224; TH2 is the minimum thickness of the lens barrel 222.
In one embodiment, the optical imaging module 10 further satisfies the following condition:
0.9 ≦ ARS/EHD ≦ 2.0. ARS is a length of a contour curve obtained along a contour of a surface of the lens 2401 with an intersection point of a surface of the lens 2401 of any lens 2401 of the focusing lens group 240 and an optical axis as a starting point and a maximum effective radius of a surface of the lens 2401 as an end point, and EHD is a maximum effective radius of any surface of the lens 2401 of the focusing lens group 240.
In one embodiment, the optical imaging module 10 further satisfies the following condition:
PLTA ≦ 100 μm; PSTA ≦ 100 μm; NLTA ≦ 100 μm and NSTA ≦ 100 μm; SLTA ≦ 100 μm; SSTA ≦ 100 μm. The HOI is the maximum imaging height perpendicular to the optical axis on the imaging plane, the PLTA is the transverse aberration of the longest working wavelength of the visible light of the positive meridian plane light fan of the optical imaging module 10 passing through an entrance pupil edge and being incident on the imaging plane at 0.7HOI, the PSTA is the transverse aberration of the shortest working wavelength of the visible light of the positive meridian plane light fan of the optical imaging module 10 passing through an entrance pupil edge and being incident on the imaging plane at 0.7HOI, and the NLTA is the transverse aberration of the longest working wavelength of the visible light of the negative meridian plane light fan of the optical imaging module 10 passing through an entrance pupil edge and being incident on the imaging plane at 0.7 HOI. NSTA is the lateral aberration at which the shortest operating wavelength of visible light of the negative meridian plane light fan of the optical imaging module 10 passes through the entrance pupil edge and is incident on the imaging plane at 0.7HOI, SLTA is the lateral aberration at which the longest operating wavelength of visible light of the sagittal plane light fan of the optical imaging module 10 passes through the entrance pupil edge and is incident on the imaging plane at 0.7HOI, and SSTA is the lateral aberration at which the shortest operating wavelength of visible light of the sagittal plane light fan of the optical imaging module 10 passes through an entrance pupil edge and is incident on the imaging plane at 0.7 HOI.
In addition to the above-described structural examples, an optical example of the focusing lens group 240 will be described below. The optical imaging module of the present invention can be designed using three working wavelengths, which are 486.1nm, 587.5nm, 656.2nm, respectively, wherein 587.5nm is the reference wavelength of the main extraction technical features. The optical imaging module can also be designed using five operating wavelengths, 470 nm, 510nm, 555nm, 610nm, 650nm, respectively, where 555nm is the primary reference wavelength for the primary extraction features.
The ratio PPR of the focal length f of the optical imaging module 10 to the focal length fp of each lens with positive refractive power, the ratio NPR of the focal length f of the optical imaging module 10 to the focal length fn of each lens with negative refractive power, the sum of the PPRs of all the lenses with positive refractive power is Σ PPR, the sum of the NPRs of all the lenses with negative refractive power is Σ NPR, and it is helpful to control the total refractive power and the total length of the optical imaging module 10 when the following conditions are satisfied: 0.5 ≦ Σ PPR/| Σ NPR ≦ 15, preferably, the following condition is satisfied: 1 ≦ Σ PPR/| Σ NPR | ≦ 3.0.
In addition, half of the diagonal length of the effective sensing area of the image sensing element 140 (i.e. the imaging height or the maximum image height of the optical imaging module 10) is HOI, and the distance from the object-side surface of the first lens element 2411 to the imaging surface on the optical axis is HOS, which satisfies the following conditions: HOS/HOI ≦ 50; and 0.5 ≦ HOS/f ≦ 150. Preferably, the following conditions are satisfied: 1 ≦ HOS/HOI ≦ 40; and 1 ≦ HOS/f ≦ 140. Thus, the design maintains the miniaturization of the optical imaging module 10, so as to be mounted on a light and thin portable electronic product.
In addition, in an embodiment, the optical imaging module 10 of the present invention is provided with at least one aperture according to the requirement to reduce stray light, which is helpful to improve the image quality.
The utility model discloses an among the optical imaging module 10, the diaphragm configuration is leading light ring or middle-arranged light ring, and wherein leading light ring meaning light ring sets up between shot object and first lens 2411, and middle-arranged light ring then shows that the light ring sets up between first lens 2411 and imaging surface. If the aperture is a front aperture, the exit pupil of the optical imaging module 10 and the imaging surface generate a longer distance to accommodate the multiple optical components, and the efficiency of the image sensing component for receiving the image can be increased; if the diaphragm is arranged in the middle, the wide-angle lens is beneficial to expanding the field angle of the system, so that the optical imaging module has the advantage of a wide-angle lens. The distance between the diaphragm and the imaging surface is InS, which satisfies the following condition: 0.2 ≦ InS/HOS ≦ 1.1. This design thereby achieves both the miniaturization of the optical imaging module 10 and the wide-angle characteristic.
The utility model discloses an among the optical imaging module 10, the distance between first lens 2411 object side to sixth lens 2461 image side is the InTL, and the thickness sum of all lens that have refractive power on the optical axis is sigma TP, and it satisfies the following condition: 0.1 ≦ Σ TP/InTL ≦ 0.9. Therefore, the design simultaneously considers the contrast of system imaging and the yield of lens manufacturing and provides proper back focus to accommodate other components.
The radius of curvature of the object-side surface of the first lens 2411 is R1, and the radius of curvature of the image-side surface of the first lens 2411 is R2, which satisfy the following conditions: 0.001 ≦ R1/R2 ≦ 25. Therefore, in this design, the first lens element 2411 has proper positive refractive power strength, so as to avoid the spherical aberration from increasing too fast. Preferably, the following conditions are satisfied: 0.01 ≦ R1/R2 ≦ 12.
The lens closest to the image plane, for example, the sixth lens 2461 has a radius of curvature of the object-side surface of R11 and the sixth lens 2461 has a radius of curvature of the image-side surface of R12, which satisfy the following conditions: -7< (R11-R12)/(R11+ R12) < 50. Thus, the design is advantageous for correcting astigmatism generated by the optical imaging module 10.
The first lens 2411 and the second lens 2421 are separated by an optical axis distance IN12, which satisfies the following condition: IN12/f ≦ 60 therefore, this design helps improve the chromatic aberration of the lens to improve its performance.
The distance between the optical axes of the fifth lens 2451 and the sixth lens 2461 is IN56, which satisfies the following condition: IN56/f ≦ 3.0, which helps to improve the chromatic aberration of the lens to improve its performance.
The thicknesses of the first lens 2411 and the second lens 2421 on the optical axis are TP1 and TP2, respectively, which satisfy the following conditions: 0.1 ≦ (TP1+ IN12)/TP2 ≦ 10. Thus, the design helps to control the sensitivity of optical imaging module fabrication and improve its performance.
The thicknesses of the fifth lens 2451 and the sixth lens 2461 on the optical axis are TP5 and TP6, respectively, and the distance between the two lenses on the optical axis is IN56, which satisfies the following conditions: 0.1 ≦ (TP6+ IN56)/TP5 ≦ 15 thus, this design helps control the sensitivity of optical imaging module fabrication and reduces the overall system height.
The optical axis thicknesses of the third lens element 2431, the fourth lens element 2441 and the fifth lens element 2451 are TP3, TP4 and TP5, respectively, the optical axis separation distance between the third lens element 2431 and the fourth lens element 2441 is IN34, the optical axis separation distance between the fourth lens element 2441 and the fifth lens element 2451 is IN45, the distance between the object side surface of the first lens element 2411 and the image side surface of the sixth lens element 2461 is invl, which satisfies the following conditions: 0.1 ≦ TP4/(IN34+ TP4+ IN45) < 1. Therefore, the design is helpful for slightly correcting aberration generated in the process of incident light advancing layer by layer and reducing the total height of the system.
The utility model discloses an among the optical imaging module 10, the critical point C61 of sixth lens 2461 object side is HVT61 with the vertical distance of optical axis, the critical point C62 of sixth lens 2461 image side is HVT62 with the vertical distance of optical axis, sixth lens object side is that the horizontal displacement distance of the nodical to critical point C61 position on the optical axis is SGC61 to the crossing point of optical axis to critical point C61 position, the horizontal displacement distance of the nodical to critical point C62 position on the optical axis of sixth lens image side is SGC62, satisfy the following condition: 0mm ≦ HVT61 ≦ 3 mm; 0mm < HVT62 ≦ 6 mm; 0 ≦ HVT61/HVT 62; 0mm ≦ SGC61 ≦ 0.5 mm; 0mm < | SGC62 | ≦ 2 mm; and 0< SGC62 |/(| SGC62 | + TP6) ≦ 0.9. Therefore, the design effectively corrects the aberration of the off-axis field of view.
The utility model discloses an optical imaging module 10 it satisfies following condition: 0.2 ≦ HVT62/HOI ≦ 0.9. Preferably, the following conditions are satisfied: 0.3 ≦ HVT62/HOI ≦ 0.8. Thus, the design facilitates aberration correction of the peripheral field of view of the optical imaging module.
The utility model discloses an optical imaging module 10 it satisfies following condition: 0 ≦ HVT62/HOS ≦ 0.5. Preferably, the following conditions are satisfied: 0.2 ≦ HVT62/HOS ≦ 0.45. Thus, this design facilitates aberration correction of the peripheral field of view of the optical imaging module 10.
The utility model discloses an among the optical imaging module 10, sixth lens 2461 object side in the optical axis intersect to the nearest optical axis of sixth lens 2461 object side between the point of inflection parallel with the optical axis horizontal displacement distance with SGI611 shows, sixth lens 2461 looks like the side in the optical axis intersect to sixth lens 2461 looks like between the point of inflection parallel with the optical axis horizontal displacement distance with SGI621 between the nearest optical axis of inflection point of side with the optical axis shows, it satisfies the following condition: 0< SGI611/(SGI611+ TP6) ≦ 0.9; 0< SGI621/(SGI621+ TP6) ≦ 0.9. Preferably, the following conditions are satisfied: 0.1 ≦ SGI611/(SGI611+ TP6) ≦ 0.6; 0.1 ≦ SGI621/(SGI621+ TP6) ≦ 0.6.
A horizontal displacement distance parallel to the optical axis between an intersection point of the object-side surface of the sixth lens element 2461 on the optical axis and an inflection point of the object-side surface of the sixth lens element 2461 second near the optical axis is denoted by SGI612, and a horizontal displacement distance parallel to the optical axis between an intersection point of the image-side surface of the sixth lens element 2461 on the optical axis and an inflection point of the image-side surface of the sixth lens element second near the optical axis is denoted by SGI622, which satisfies the following conditions: 0< SGI612/(SGI612+ TP6) ≦ 0.9; 0< SGI622/(SGI622+ TP6) ≦ 0.9. Preferably, the following conditions are satisfied: 0.1 ≦ SGI612/(SGI612+ TP6) ≦ 0.6; 0.1 ≦ SGI622/(SGI622+ TP6) ≦ 0.6.
The vertical distance between the inflection point of the nearest optical axis on the object-side surface of the sixth lens element 2461 and the optical axis is represented by HIF611, and the vertical distance between the inflection point of the nearest optical axis on the image-side surface of the sixth lens element 2461 and the optical axis is represented by HIF621, which satisfies the following conditions: 0.001mm ≦ HIF611 ≦ 5 mm; 0.001mm ≦ HIF621 ≦ 5 mm. Preferably, the following conditions are satisfied: 0.1mm ≦ HIF611 ≦ 3.5 mm; 1.5mm ≦ HIF621 ≦ 3.5 mm.
A vertical distance between an inflection point on the second object-side surface of the sixth lens element 2461 closer to the optical axis and the optical axis is denoted by HIF612, and a vertical distance between an intersection point on the optical axis of the image-side surface of the sixth lens element 2461 and the optical axis to the inflection point on the second image-side surface of the sixth lens element closer to the optical axis is denoted by HIF622, which satisfy the following conditions: 0.001mm ≦ HIF612 ≦ 5 mm; 0.001mm ≦ HIF622 ≦ 5 mm. Preferably, the following conditions are satisfied: 0.1mm ≦ HIF622 ≦ 3.5 mm; 0.1mm ≦ HIF612 ≦ 3.5 mm.
The vertical distance between the third near-optical-axis inflection point on the object-side surface of the sixth lens element 2461 and the optical axis is denoted by HIF613, and the vertical distance between the third near-optical-axis inflection point on the image-side surface of the sixth lens element 2461 and the optical axis is denoted by HIF623, which satisfies the following conditions: 0.001mm ≦ HIF613 ≦ 5 mm; 0.001mm ≦ HIF623 ≦ 5 mm. Preferably, the following conditions are satisfied: 0.1mm ≦ HIF623 ≦ 3.5 mm; 0.1mm ≦ HIF613 ≦ 3.5 mm.
A vertical distance between an inflection point on the fourth object-side surface of the sixth lens element 2461 near the optical axis and the optical axis is denoted by HIF614, and a vertical distance between an intersection point on the optical axis of the image-side surface of the sixth lens element 2461 and the inflection point on the fourth image-side surface of the sixth lens element 2461 near the optical axis and the optical axis is denoted by HIF624, which satisfy the following conditions: 0.001mm ≦ HIF614 ≦ 5 mm; 0.001mm ≦ HIF624 ≦ 5 mm. Preferably, the following conditions are satisfied: 0.1mm ≦ HIF624 ≦ 3.5 mm; 0.1mm ≦ HIF614 ≦ 3.5 mm.
In the optical imaging module of the present invention, (TH1+ TH2)/HOI satisfies the following conditions: 0< (TH1+ TH2)/HOI ≦ 0.95, preferably satisfying the following conditions: 0< (TH1+ TH2)/HOI ≦ 0.5; (TH1+ TH2)/HOS satisfies the following conditions: 0< (TH1+ TH2)/HOS ≦ 0.95, preferably satisfying the following conditions: 0< (TH1+ TH2)/HOS ≦ 0.5; the 2-fold ratio (TH1+ TH2)/PhiA satisfies the following conditions: 0<2 times (TH1+ TH2)/PhiA ≦ 0.95, preferably satisfying the following conditions: 0<2 times (TH1+ TH2)/PhiA ≦ 0.5.
The present invention provides an embodiment of an optical imaging module 10 that facilitates correction of chromatic aberration of the optical imaging module by staggering lenses having high and low dispersion coefficients.
The equation for the above aspheric surface is:
z＝ch2/[1+[1-(k+1)c2h2]0.5]+A4h4+A6h6+A8h8+A10h10+A12h12+A14h14+A16h16+A18h18+A20h20+… (1)
where z is a position value referenced to a surface vertex at a position of height h in the optical axis direction, k is a cone coefficient, c is an inverse of a curvature radius, and a4, a6, A8, a10, a12, a14, a16, a18, and a20 are high-order aspheric coefficients.
The utility model provides an among the optical imaging module 10, the material of lens is plastics or glass. When the lens is made of plastic, the production cost and the weight can be effectively reduced. In addition, when the lens is made of glass, the thermal effect can be controlled and the design space for the refractive power configuration of the optical imaging module can be increased. In addition, the object side surface and the image side surface of the first lens 2411 to the seventh lens 2471 in the optical imaging module are aspheric surfaces, so that more control variables are obtained, and besides the aberration is reduced, the number of the lenses used is reduced compared with the use of the traditional glass lens, and therefore, the total height of the optical imaging module can be effectively reduced.
Furthermore, in the optical imaging module 10 of the present invention, if the lens surface is a convex surface, the lens surface is a convex surface at the paraxial region in principle; if the lens surface is concave, it means in principle that the lens surface is concave at the paraxial region.
The utility model discloses an optical imaging module 10 is applied to the optical system who removes to focus according to the demand to have good aberration concurrently and revise and good imaging quality's characteristic, thereby enlarge the application aspect.
The optical imaging module of the present invention can further meet the demand that at least one of the first lens 2411, the second lens 2421, the third lens 2431, the fourth lens 2441, the fifth lens 2451, the sixth lens 2461 and the seventh lens 2471 is a light filtering assembly with a wavelength less than 500nm, and the optical imaging module can be manufactured by a material with a filtering short wavelength through at least one of the specific lens with a filtering function and a coating film on the surface of the specific lens.
The imaging surface of the optical imaging module 10 of the present invention is selected to be a plane or a curved surface according to the requirement. The imaging plane is a curved surface (e.g., a spherical surface with a radius of curvature), which helps to reduce the incident angle required for focusing light on the imaging plane, and helps to improve the relative illumination in addition to achieving the length (TTL) of the compact optical imaging module.
First optical embodiment
As shown in fig. 18, the focusing lens assembly 240 includes six lens elements 2401 with refractive power, in order from an object side to an image side, a first lens element 2411, a second lens element 2421, a third lens element 2431, a fourth lens element 2441, a fifth lens element 2451 and a sixth lens element 2461, and the focusing lens assembly 240 satisfies the following conditions: 0.1 ≦ InTL/HOS ≦ 0.95. HOS is the distance on the optical axis from the object side surface of the first lens element 2411 to the image plane. The instl is a distance on the optical axis from the object-side surface of the first lens element 2411 to the image-side surface of the sixth lens element 2461.
Referring to fig. 20 and 21, in which fig. 20 is a schematic diagram of a lens assembly of an optical imaging module according to a first optical embodiment of the present invention, and fig. 21 is a graph of spherical aberration, astigmatism and optical distortion of the optical imaging module according to the first optical embodiment in order from left to right. In fig. 20, the optical imaging module 10 includes, in order from an object side to an image side, a first lens element 2411, an aperture stop 250, a second lens element 2421, a third lens element 2431, a fourth lens element 2441, a fifth lens element 2451, a sixth lens element 2461, an infrared filter 300, an image plane 600, and an image sensor 140.
The first lens element 2411 with negative refractive power has a concave object-side surface 24112 and a concave image-side surface 24114, which are both aspheric, and has an object-side surface 24112 with two inflection points. The maximum effective radius of the object side 24112 of the first lens 2411 has a profile curve length of ARS11 and the maximum effective radius of the image side 24114 of the first lens 2411 has a profile curve length of ARS 12. The contour curve length of the 1/2 entrance pupil diameter (HEP) of the object side 2412 of the first lens 2411 is denoted as ARE11, and the contour curve length of the 1/2 entrance pupil diameter (HEP) of the image side 24114 of the first lens 2411 is denoted as ARE 12. The first lens 2411 has a thickness TP1 on the optical axis.
The horizontal displacement distance parallel to the optical axis between the intersection point of the object-side surface 24112 of the first lens element 2411 and the point of inflection of the nearest optical axis of the object-side surface 24112 of the first lens element 2411 is indicated as SGI111, and the horizontal displacement distance parallel to the optical axis between the intersection point of the image-side surface 24114 of the first lens element 2411 and the point of inflection of the nearest optical axis of the image-side surface 24114 of the first lens element 2411 is indicated as SGI121, which satisfies the following conditions: SGI111 ═ 0.0031 mm; | SGI111 |/(| SGI111 | + TP1) | -0.0016.
A horizontal displacement distance parallel to the optical axis between the intersection point of the object-side surface 24112 of the first lens element 2411 and the second inflection point near the optical axis of the object-side surface 24112 of the first lens element 2411 is indicated as SGI112, and a horizontal displacement distance parallel to the optical axis between the intersection point of the image-side surface 24114 of the first lens element 2411 and the second inflection point near the optical axis of the image-side surface 24114 of the first lens element 2411 is indicated as SGI122, which satisfies the following conditions: SGI 112-1.3178 mm; | SGI112 |/(| SGI112 | + TP1) | -0.4052.
The vertical distance between the inflection point of the object-side surface 24112 of the first lens element 2411 closest to the optical axis and the optical axis is denoted by HIF111, and the vertical distance between the inflection point of the image-side surface 24114 of the first lens element 2411 closest to the optical axis and the optical axis is denoted by HIF121, which satisfies the following conditions: HIF 111-0.5557 mm; HIF111/HOI is 0.1111.
The vertical distance between the second on-axis inflection point of the object-side surface 24112 of the first lens element 2411 and the optical axis is denoted by HIF112, and the vertical distance between the second on-axis inflection point of the image-side surface 24114 of the first lens element 2411 and the optical axis is denoted by HIF122, which satisfies the following conditions: HIF 112-5.3732 mm; HIF112/HOI 1.0746.
The second lens element 2421 with positive refractive power has a convex object-side surface 24212 and a convex image-side surface 24214, and is aspheric, and the object-side surface 24212 has a inflection point. The profile curve length for the maximum effective radius of the object side surface 24212 of the second lens 2421 is denoted as ARS21 and the profile curve length for the maximum effective radius of the image side surface 24214 of the second lens 2421 is denoted as ARS 22. The contour curve length for the 1/2 entrance pupil diameter (HEP) of the object side surface 24212 of the second lens 2421 is denoted as ARE21 and the contour curve length for the 1/2 entrance pupil diameter (HEP) of the image side surface 24214 of the second lens 2421 is denoted as ARE 22. The thickness of the second lens 2421 on the optical axis is TP 2.
The horizontal displacement distance parallel to the optical axis between the intersection point of the object-side surface 24212 of the second lens 2421 on the optical axis and the inflection point of the nearest optical axis of the object-side surface 24212 of the second lens 2421 is indicated by SGI211, and the horizontal displacement distance parallel to the optical axis between the intersection point of the image-side surface 24214 of the second lens 2421 on the optical axis and the inflection point of the nearest optical axis of the image-side surface 24214 of the second lens 2421 is indicated by SGI221, which satisfies the following conditions: SGI 211-0.1069 mm; -SGI 211 |/(| SGI211 | + TP2) ═ 0.0412; SGI221 ═ 0 mm; | SGI221 |/(| SGI221 | + TP2) | 0.
The vertical distance between the inflection point of the object-side surface 24212 of the second lens element 2421 closest to the optical axis and the optical axis is denoted by HIF211, and the vertical distance between the inflection point of the image-side surface 24214 of the second lens element 2421 closest to the optical axis and the optical axis is denoted by HIF221, which satisfies the following conditions: HIF 211-1.1264 mm; HIF211/HOI 0.2253; HIF221 ═ 0 mm; HIF221/HOI is 0.
The third lens element 2431 with negative refractive power has a concave object-side surface 24312 and a convex image-side surface 24314, and is aspheric, and the object-side surface 24312 and the image-side surface 24314 have inflection points. The maximum effective radius of the object side surface 24312 of the third lens 2431 is indicated by its contour curve length ARS31, and the maximum effective radius of the image side surface 24314 of the third lens 2431 is indicated by its contour curve length ARS 32. The contour curve length of the 1/2 entrance pupil diameter (HEP) of the object side surface 24312 of the third lens 2431 is indicated by ARE31, and the contour curve length of the 1/2 entrance pupil diameter (HEP) of the image side surface 24314 of the third lens 2431 is indicated by ARE 32. The third lens 2431 has a thickness TP3 on the optical axis.
The horizontal displacement distance parallel to the optical axis between the intersection point of the object-side surface 24312 of the third lens element 2431 on the optical axis and the inflection point of the nearest optical axis of the object-side surface 24312 of the third lens element 2431 is represented by SGI311, and the horizontal displacement distance parallel to the optical axis between the intersection point of the image-side surface 24314 of the third lens element 2431 on the optical axis and the inflection point of the nearest optical axis of the image-side surface 24314 of the third lens element 2431 is represented by SGI321, which satisfies the following conditions: SGI 311-0.3041 mm; -SGI 311 |/(| SGI311 | + TP3) — 0.4445; SGI 321-0.1172 mm; -SGI 321 |/(| SGI321 | + TP3) — 0.2357.
The vertical distance between the inflection point of the nearest optical axis of the object-side surface 24312 of the third lens 2431 and the optical axis is denoted by HIF311, and the vertical distance between the inflection point of the nearest optical axis of the image-side surface 24314 of the third lens 2431 and the optical axis from the intersection point of the image-side surface 24314 of the third lens 2431 to the nearest optical axis of the image-side surface 24314 of the third lens 2431 and the optical axis is denoted by HIF321, which satisfies the following conditions: HIF311 1.5907 mm; HIF311/HOI 0.3181; HIF 321-1.3380 mm; HIF 321/HOI 0.2676.
The fourth lens element 2441 with positive refractive power has a convex object-side surface 24412 and a concave image-side surface 24414, and is aspheric, and has an object-side surface 24412 having two inflection points and an image-side surface 24414 having an inflection point. The maximum effective radius of the object side 24412 of the fourth lens 2441 is indicated by ARS41 and the maximum effective radius of the image side 24414 of the fourth lens 2441 is indicated by ARS 42. The contour curve length of the 1/2 entrance pupil diameter (HEP) of the object side 24412 of the fourth lens 2441 is indicated by ARE41, and the contour curve length of the 1/2 entrance pupil diameter (HEP) of the image side 24414 of the fourth lens 2441 is indicated by ARE 42. The thickness of the fourth lens 2441 on the optical axis is TP 4.
The horizontal displacement distance parallel to the optical axis between the intersection point of the object-side surface 24412 of the fourth lens element 2441 on the optical axis to the inflection point of the nearest optical axis of the object-side surface 24412 of the fourth lens element 2441 is indicated at SGI411, and the horizontal displacement distance parallel to the optical axis between the intersection point of the image-side surface 24414 of the fourth lens element 2441 on the optical axis to the inflection point of the nearest optical axis of the image-side surface 24414 of the fourth lens element 2441 is indicated at SGI421, which satisfies the following conditions: SGI411 ═ 0.0070 mm; -SGI 411 |/(| SGI411 | + TP4) ═ 0.0056; SGI421 ═ 0.0006 mm; | SGI421 |/(| SGI421 | + TP4) | -0.0005.
The horizontal displacement distance parallel to the optical axis between the intersection of the object-side surface 24412 of the fourth lens element 2441 on the optical axis to the second inflection point proximate to the optical axis of the object-side surface 24412 of the fourth lens element 2441 is indicated at SGI412, and the horizontal displacement distance parallel to the optical axis between the intersection of the image-side surface 24414 of the fourth lens element 2441 on the optical axis to the second inflection point proximate to the optical axis of the image-side surface 24414 of the fourth lens element 2441 is indicated at SGI422, which satisfies the following conditions: SGI412 ═ -0.2078 mm; | SGI412 |/(| SGI412 | + TP4) | -0.1439.
The vertical distance between the inflection point of the object-side surface 24412 of the fourth lens element 2441 closest to the optical axis and the optical axis is denoted by HIF411, and the vertical distance between the inflection point of the image-side surface 24414 of the fourth lens element 2441 on the optical axis and the optical axis to the image-side surface 24414 of the fourth lens element 2441 closest to the optical axis is denoted by HIF421, which satisfies the following conditions: HIF411 mm 0.4706 mm; HIF411/HOI 0.0941; HIF421 of 0.1721 mm; HIF 421/HOI ═ 0.0344.
The vertical distance between the second on-axis inflection point of the object-side surface 24412 of the fourth lens element 2441 and the optical axis is denoted by HIF412, and the vertical distance between the second on-axis inflection point of the image-side surface 24414 of the fourth lens element 2441 and the optical axis is denoted by HIF422, wherein the following conditions are satisfied: HIF412 ═ 2.0421 mm; HIF412/HOI 0.4084.
The fifth lens element 2451 with positive refractive power has a convex object-side surface 2452 and a convex image-side surface 24514, and is aspheric, wherein the object-side surface 2452 has two inflection points and the image-side surface 24514 has one inflection point. The maximum effective radius profile length of the object side 2452 of the fifth lens 2451 is indicated by ARS51 and the maximum effective radius profile length of the image side 24514 of the fifth lens 2451 is indicated by ARS 52. The contour curve length for the 1/2 entrance pupil diameter (HEP) of object side 2452 of fifth lens 2451 is indicated by ARE51, and the contour curve length for the 1/2 entrance pupil diameter (HEP) of image side 24514 of fifth lens 2451 is indicated by ARE 52. The thickness of the fifth lens 2451 on the optical axis is TP 5.
The horizontal displacement distance parallel to the optical axis between the intersection of the object side 2456 of the fifth lens 2451 and the point of inflection of the nearest optical axis of the object side 2452 of the fifth lens 2451 is denoted by SGI511, and the horizontal displacement distance parallel to the optical axis between the intersection of the image side 2454 of the fifth lens 2451 and the point of inflection of the nearest optical axis of the image side 2454 of the fifth lens 2451 is denoted by SGI521, which satisfies the following conditions: SGI 511-0.00364 mm; -SGI 511 |/(| SGI511 | + TP5) ═ 0.00338; SGI521 ═ 0.63365 mm; | SGI521 |/(| SGI521 | + TP5) | -0.37154.
The horizontal displacement distance parallel to the optical axis between the intersection of the object side 2456 of fifth lens 2451 and the second point of inflection near the optical axis of the object side 2452 of fifth lens 2451 is denoted by SGI512, and the horizontal displacement distance parallel to the optical axis between the intersection of the image side 2454 of fifth lens 2451 and the second point of inflection near the optical axis of the image side 2454 of fifth lens 2451 is denoted by SGI522, satisfying the following conditions: SGI512 ═ 0.32032 mm; | SGI512 |/(| SGI512 | + TP5) | -0.23009.
The horizontal displacement distance parallel to the optical axis between the intersection of the object-side surface 2452 of the fifth lens 2451 and the third point of inflection near the optical axis of the object-side surface 2452 of the fifth lens 2451 is denoted by SGI513, and the horizontal displacement distance parallel to the optical axis between the intersection of the image-side surface 2454 of the fifth lens 2451 and the third point of inflection near the optical axis of the image-side surface 24514 of the fifth lens 2451 is denoted by SGI523, which satisfies the following conditions: SGI513 ═ 0 mm; -SGI 513 |/(| SGI513 | + TP5) ═ 0; SGI523 ═ 0 mm; -SGI 523 |/(| SGI523 | + TP5) ═ 0.
The horizontal displacement distance parallel to the optical axis between the intersection of the object-side surface 2452 of the fifth lens 2451 and the fourth point of inflection near the optical axis of the object-side surface 2452 of the fifth lens 2451 is denoted by SGI514, and the horizontal displacement distance parallel to the optical axis between the intersection of the image-side surface 24514 of the fifth lens 2451 and the fourth point of inflection near the optical axis of the image-side surface 24514 of the fifth lens 2451 is denoted by SGI524, which satisfies the following conditions: SGI514 ═ 0 mm; -SGI 514 |/(| SGI514 | + TP5) | 0; SGI524 ═ 0 mm; | SGI524 |/(| SGI524 | + TP5) | 0.
The vertical distance between the inflection point of the nearest optical axis of the object side 2456 of the fifth lens 2451 and the optical axis is denoted by HIF511, and the vertical distance between the inflection point of the nearest optical axis of the image side 24514 of the fifth lens 2451 and the optical axis is denoted by HIF521, which satisfy the following conditions: HIF 511-0.28212 mm; HIF511/HOI 0.05642; HIF521 ═ 2.13850 mm; HIF521/HOI 0.42770.
The vertical distance between the second inflection point of the object side 2452 of fifth lens 2451 near the optical axis and the optical axis is denoted by HIF512, and the vertical distance between the second inflection point of the image side 24514 of fifth lens 2451 near the optical axis and the optical axis is denoted by HIF522, satisfying the following conditions: HIF 512-2.51384 mm; HIF 512/HOI 0.50277.
The vertical distance between the third inflection point near the optic axis of object side 2456 of fifth lens 2451 and the optic axis is denoted by HIF513, and the vertical distance between the third inflection point near the optic axis of image side 24514 of fifth lens 2451 and the optic axis is denoted by HIF523, satisfying the following conditions: HIF513 ═ 0 mm; HIF513/HOI ═ 0; HIF523 ═ 0 mm; HIF523/HOI ═ 0.
The vertical distance between the fourth inflection point near the optic axis of object side 2456 of fifth lens 2451 and the optic axis is denoted by HIF514, and the vertical distance between the fourth inflection point near the optic axis of image side 24514 of fifth lens 2451 and the optic axis is denoted by HIF524, which satisfies the following conditions: HIF514 ═ 0 mm; HIF514/HOI ═ 0; HIF524 ═ 0 mm; HIF524/HOI ═ 0.
The sixth lens element 2461 with negative refractive power is made of plastic, and has a concave object-side surface 24612 and a concave image-side surface 24614, wherein the object-side surface 24612 has two inflection points and the image-side surface 24614 has one inflection point. This design effectively adjusts the angle at which each field of view is incident on the sixth lens 2461, thereby improving aberration. The maximum effective radius of the object side surface 24612 of the sixth lens 2461 is indicated by its contour curve length ARS61, and the maximum effective radius of the image side surface 24614 of the sixth lens 2461 is indicated by its contour curve length ARS 62. The contour curve length of the 1/2 entrance pupil diameter (HEP) of the object side surface 24612 of sixth lens 2461 is indicated by ARE61, and the contour curve length of the 1/2 entrance pupil diameter (HEP) of the image side surface 24614 of sixth lens 2461 is indicated by ARE 62. The thickness of the sixth lens 2461 on the optical axis is TP 6.
A horizontal displacement distance parallel to the optical axis between an intersection point of the object-side surface 24612 of the sixth lens element 2461 on the optical axis and an inflection point of the nearest optical axis of the object-side surface 24612 of the sixth lens element 2461 is represented by SGI611, and a horizontal displacement distance parallel to the optical axis between an intersection point of the image-side surface 24614 of the sixth lens element 2461 on the optical axis and an inflection point of the nearest optical axis of the image-side surface 24614 of the sixth lens element 2461 is represented by SGI621, which satisfies the following conditions: SGI611 ═ 0.38558 mm; -SGI 611 |/(| SGI611 | + TP6) — 0.27212; SGI 621-0.12386 mm; -SGI 621 |/(| SGI621 | + TP6) — 0.10722.
A horizontal displacement distance parallel to the optical axis between an intersection point of the object-side surface 24612 of the sixth lens element 2461 on the optical axis and an inflection point of the object-side surface 24612 of the sixth lens element 2461 second near the optical axis is represented by SGI612, and a horizontal displacement distance parallel to the optical axis between an intersection point of the image-side surface 24614 of the sixth lens element 2461 on the optical axis and an inflection point of the image-side surface 24614 second near the optical axis is represented by SGI621, which satisfies the following conditions: SGI612 ═ -0.47400 mm; -SGI 612 |/(| SGI612 | + TP6) — 0.31488; SGI622 ═ 0 mm; | SGI622 |/(| SGI622 | + TP6) | 0.
The vertical distance between the inflection point of the nearest optical axis of object-side surface 24612 of sixth lens element 2461 and the optical axis is denoted by HIF611, and the vertical distance between the inflection point of the nearest optical axis of image-side surface 24614 of sixth lens element 2461 and the optical axis is denoted by HIF621, which satisfies the following conditions: HIF611 ═ 2.24283 mm; HIF611/HOI 0.44857; HIF 621-1.07376 mm; HIF621/HOI 0.21475.
The vertical distance between the second inflection point near the optical axis of object-side surface 24612 of sixth lens element 2461 and the optical axis is denoted by HIF612, and the vertical distance between the second inflection point near the optical axis and the optical axis of image-side surface 24614 of sixth lens element 2461 is denoted by HIF622, which satisfy the following conditions: HIF612 ═ 2.48895 mm; HIF 612/HOI 0.49779.
The vertical distance between the third inflection point near the optical axis of object-side surface 24612 of sixth lens element 2461 and the optical axis is denoted by HIF613, and the vertical distance between the third inflection point near the optical axis and the optical axis of image-side surface 24614 of sixth lens element 2461 is denoted by HIF623, which satisfy the following conditions: HIF613 ═ 0 mm; HIF613/HOI ═ 0; HIF623 ═ 0 mm; HIF623/HOI is 0.
The vertical distance between the fourth inflection point near the optical axis of object-side surface 24612 of sixth lens element 2461 and the optical axis is denoted by HIF614, and the vertical distance between the fourth inflection point near the optical axis and the optical axis of image-side surface 24614 of sixth lens element 2461 is denoted by HIF624, which satisfy the following conditions: HIF614 ═ 0 mm; HIF614/HOI ═ 0; HIF624 ═ 0 mm; HIF624/HOI ═ 0.
The infrared filter 300 is made of glass, and is disposed between the sixth lens element 2461 and the image plane 600 without affecting the focal length of the optical imaging module.
In the optical imaging module of this embodiment, the focal length of the lens assembly is f, the diameter of the entrance pupil is HEP, half of the maximum viewing angle is HAF, and the numerical values thereof are as follows: f is 4.075 mm; f/HEP is 1.4; and HAF 50.001 degrees and tan (HAF) 1.1918.
In the lens assembly of this embodiment, the focal length of the first lens 2411 is f1, and the focal length of the sixth lens 2461 is f6, which satisfy the following conditions: f 1-7.828 mm; | f/f1 | -0.52060; f6 ═ 4.886; and | f1 | -f 6 |.
In the optical imaging module of the present embodiment, the focal lengths of the second lens 2421 to the fifth lens 2451 are f2, f3, f4 and f5, respectively, which satisfy the following conditions: f2 | + -f 3 | + f4 | + f5 | -95.50815 mm; | f1 | f6 | 12.71352mm and | f2 | + -f 3 | -f 4 | + | f5 | f1 | f6 |.
In the optical imaging module of this embodiment, the sum of the PPR of all the lenses with positive refractive power is Σ PPR ═ f/f2+ f/f4+ f/f5 ═ 1.63290, the sum of the NPR of all the lenses with negative refractive power is Σ NPR ═ f/f1 ++ |/f 3 ± + | f/f6 | -1.51305, and the sum of the PPR |/∑ NPR | -1.07921. The following conditions are also satisfied: | f/f2 | -0.69101; | f/f3 | -0.15834; | f/f4 | -0.06883; | f/f5 | -0.87305; | f/f6 | -0.83412.
In the optical imaging module of this embodiment, a distance between the object-side surface 24112 of the first lens element 2411 and the image-side surface 24614 of the sixth lens element 2461 is untl, a distance between the object-side surface 24112 of the first lens element 2411 and the image plane 600 is HOS, a distance between the stop 250 and the image plane 600 is InS, a half of a diagonal length of an effective sensing area of the image sensing element 140 is HOI, and a distance between the image-side surface 24614 of the sixth lens element and the image plane 600 is BFL, which satisfy the following conditions: instl + BFL ═ HOS; HOS 19.54120 mm; HOI 5.0 mm; HOS/HOI 3.90824; HOS/f 4.7952; 11.685mm for InS; InS/HOS 0.59794 and invl/HOS 0.9171.
In the optical imaging module of the present embodiment, the sum of the thicknesses of all the lenses with refractive power on the optical axis is Σ TP, which satisfies the following condition: Σ TP is 8.13899 mm; and Σ TP/intil 0.52477. Therefore, the design simultaneously considers the contrast of system imaging and the yield of lens manufacturing and provides proper back focus to accommodate other components.
In the optical imaging module of this embodiment, the curvature radius of the object-side surface 24112 of the first lens 2411 is R1, and the curvature radius of the image-side surface 24114 of the first lens 2411 is R2, which satisfy the following conditions: R1/R2 | -8.99987. Therefore, in this design, the first lens element 2411 has proper positive refractive power strength, so as to avoid the spherical aberration from increasing too fast.
In the optical imaging module of this embodiment, the curvature radius of the object-side surface 24612 of the sixth lens 2461 is R11, and the curvature radius of the image-side surface 24614 of the sixth lens 2461 is R12, which satisfies the following conditions: (R11-R12)/(R11+ R12) ═ 1.27780. Therefore, the design is beneficial to correcting astigmatism generated by the optical imaging module.
In the optical imaging module of this embodiment, the sum of the focal lengths of all the lenses with positive refractive power is Σ PP, which satisfies the following condition: f2+ f4+ f5 is 69.770 mm; and f5/(f2+ f4+ f5) ═ 0.067. Therefore, the design is helpful to properly distribute the positive refractive power of a single lens to other positive lenses so as to inhibit the generation of significant aberration in the incident light traveling process.
In the optical imaging module of the present embodiment, the sum of the focal lengths of all the lenses with negative refractive power is Σ NP, which satisfies the following condition: Σ NP ═ f1+ f3+ f6 ═ 38.451 mm; and f6/(f1+ f3+ f6) ═ 0.127. Therefore, the design helps to properly distribute the negative refractive power of the sixth lens element 2461 to the other negative lens elements, so as to suppress the occurrence of significant aberration during the incident light traveling process.
IN the optical imaging module of the present embodiment, the distance between the first lens 2411 and the second lens 2421 on the optical axis is IN12, which satisfies the following condition: IN 12-6.418 mm; IN12/f 1.57491. Therefore, the design is beneficial to improving the chromatic aberration of the lens so as to improve the performance of the lens.
IN the optical imaging module of the present embodiment, the distance between the fifth lens 2451 and the sixth lens 2461 on the optical axis is IN56, which satisfies the following condition: IN56 is 0.025 mm; IN56/f 0.00613. Therefore, the design is beneficial to improving the chromatic aberration of the lens so as to improve the performance of the lens.
In the optical imaging module of the present embodiment, the thicknesses of the first lens 2411 and the second lens 2421 on the optical axis are TP1 and TP2, respectively, which satisfy the following conditions: TP 1-1.934
mm; TP 2-2.486 mm; and (TP1+ IN12)/TP2 ═ 3.36005. Thus, the design helps to control the sensitivity of optical imaging module fabrication and improve its performance.
IN the optical imaging module of the present embodiment, the thicknesses of the fifth lens 2451 and the sixth lens 2461 on the optical axis are TP5 and TP6, respectively, and the distance between the two lenses on the optical axis is IN56, which satisfies the following conditions: TP5 ═ 1.072 mm; TP6 ═ 1.031 mm; and (TP6+ IN56)/TP5 ═ 0.98555. Thus, the design helps control the sensitivity of the optical imaging module fabrication and reduces the overall system height.
IN the optical imaging module of this embodiment, the distance between the third lens 2431 and the fourth lens 2441 on the optical axis is IN34, and the distance between the fourth lens 2441 and the fifth lens 2451 on the optical axis is IN45, which satisfies the following conditions: IN34 is 0.401 mm; IN45 is 0.025 mm; and TP4/(IN34+ TP4+ IN45) ═ 0.74376. Therefore, the design is beneficial to correcting aberration generated in the process of the incident light advancing slightly layer by layer and reducing the total height of the system.
In the optical imaging module of this embodiment, the horizontal displacement distance between the intersection point of the object-side surface 2452 of the fifth lens 2451 and the maximum effective radius position of the object-side surface 2452 of the fifth lens 2451 on the optical axis is InRS51, the horizontal displacement distance between the intersection point of the image-side surface 2454 of the fifth lens 2451 and the maximum effective radius position of the image-side surface 2454 of the fifth lens 2451 on the optical axis is InRS52, and the thickness of the fifth lens 2451 on the optical axis is TP5, which satisfies the following conditions: InRS 51-0.34789 mm; InRS 52-0.88185 mm; | InRS51 |/TP 5 | -0.32458 and | InRS52 |/TP 5 | -0.82276. Therefore, the design is beneficial to the manufacturing and molding of the lens and effectively maintains the miniaturization of the lens.
In the optical imaging module of this embodiment, a vertical distance between a critical point of the object side 2452 of the fifth lens 2451 and the optical axis is HVT51, and a vertical distance between a critical point of the image side 2454 of the fifth lens 2451 and the optical axis is HVT52, which satisfy the following conditions: HVT51 ═ 0.515349 mm; HVT 52-0 mm.
In the optical imaging module of this embodiment, a horizontal displacement distance between an intersection point of the object-side surface 24612 of the sixth lens element 2461 on the optical axis and the maximum effective radius position of the object-side surface 24612 of the sixth lens element 2461 on the optical axis is InRS61, a horizontal displacement distance between an intersection point of the image-side surface 24614 of the sixth lens element 2461 on the optical axis and the maximum effective radius position of the image-side surface 24614 of the sixth lens element 2461 on the optical axis is InRS62, and a thickness of the sixth lens element 2461 on the optical axis is TP6, which satisfy the following conditions: InRS 61-0.58390 mm; InRS62 ═ 0.41976 mm; | InRS61 |/TP 6 | -0.56616 and | InRS62 |/TP 6 | -0.40700. Therefore, the design is beneficial to the manufacturing and molding of the lens and effectively maintains the miniaturization of the lens.
In the optical imaging module of this embodiment, a perpendicular distance between a critical point of the object-side surface 24612 of the sixth lens element 2461 and the optical axis is HVT61, and a perpendicular distance between a critical point of the image-side surface 24614 of the sixth lens element 2461 and the optical axis is HVT62, which satisfies the following conditions: HVT61 ═ 0 mm; HVT 62-0 mm.
In the optical imaging module of the present embodiment, it satisfies the following conditions: HVT51/HOI 0.1031. Thus, the design facilitates aberration correction of the peripheral field of view of the optical imaging module.
In the optical imaging module of the present embodiment, it satisfies the following conditions: HVT51/HOS 0.02634. Thus, the design facilitates aberration correction of the peripheral field of view of the optical imaging module.
In the optical imaging module of this embodiment, the second lens element 2421, the third lens element 2431 and the sixth lens element 2461 have negative refractive power, the abbe number of the second lens element 2421 is NA2, the abbe number of the third lens element 2431 is NA3, and the abbe number of the sixth lens element 2461 is NA6, which satisfy the following conditions: NA6/NA2 ≦ 1. Therefore, the design is beneficial to correcting the chromatic aberration of the optical imaging module.
In the optical imaging module of this embodiment, the TV distortion of the optical imaging module during image formation is TDT, and the optical distortion during image formation is ODT, which satisfy the following conditions: TDT 2.124%; and the ODT is 5.076 percent.
In the optical imaging module of this embodiment, LS is 12mm, PhiA is 2 times EHD62 to 6.726mm (EHD62: maximum effective radius of the image side surface 24614 of the sixth lens 2461), PhiC +2 times TH2 to 7.026mm, PhiD +2 times phi c +2 times (TH1+ TH2) to 7.426mm, TH1 to 0.2mm, TH2 to 0.15mm, PhiA/PhiD to 0.9057, TH1+ TH2 to 0.35mm, (TH1+ TH2)/HOI to 0.035, (TH1+ 2)/HOS to 0.0179, 2 times (TH1+ TH2)/PhiA to 0.1041, (TH1+ TH2)/LS to 0.0292.
The following table one and table two are referred to cooperatively.
TABLE II aspheric coefficients of the first optical example
And obtaining the data values related to the following contour curve lengths according to the first table and the second table:
the first optical embodiment is a detailed structural data of the first optical embodiment, wherein the unit of the radius of curvature, the thickness, the distance, and the focal length is mm, and the surfaces 0-16 sequentially represent surfaces from the object side to the image side. Table II shows aspheric data of the first optical embodiment, where k represents the cone coefficients in the aspheric curve equation, and A1-A20 represents the aspheric coefficients of order 1-20 of each surface. In addition, the following tables of the optical embodiments correspond to the schematic diagrams and aberration graphs of the optical embodiments, and the definitions of the data in the tables are the same as those of the first and second tables of the first optical embodiment, which is not repeated herein. Furthermore, the mechanical component parameters of the following optical embodiments are defined as same as those of the first optical embodiment.
Second optical embodiment
As shown in fig. 19, the focusing lens assembly 240 includes seven lens elements 2401 with refractive power, in order from an object side to an image side, a first lens element 2411, a second lens element 2421, a third lens element 2431, a fourth lens element 2441, a fifth lens element 2451, a sixth lens element 2461 and a seventh lens element 2471, and the focusing lens assembly 240 satisfies the following condition: 0.1 ≦ InTL/HOS ≦ 0.95. HOS is the distance on the optical axis from the object-side surface of the first lens element 2411 to the image plane, and untl is the distance on the optical axis from the object-side surface of the first lens element 2411 to the image-side surface of the seventh lens element 2471.
Referring to fig. 22 and 23, fig. 22 is a schematic diagram of a lens assembly of an optical imaging module according to a second optical embodiment of the present invention, and fig. 23 is a graph illustrating spherical aberration, astigmatism and optical distortion of the optical imaging module according to the second optical embodiment in order from left to right. In fig. 22, the optical imaging module includes, in order from an object side to an image side, a first lens element 2411, a second lens element 2421, a third lens element 2431, an aperture stop 250, a fourth lens element 2441, a fifth lens element 2451, a sixth lens element 2461, a seventh lens element 2471, an ir-pass filter 300, an image plane 600 and an image sensor 140.
The first lens element 2411 with negative refractive power has a convex object-side surface 24112 and a concave image-side surface 24114.
The second lens element 2421 with negative refractive power has a concave object-side surface 24212 and a convex image-side surface 24214.
The third lens element 2431 with positive refractive power has a convex object-side surface 24312 and a convex image-side surface 24314.
The fourth lens element 2441 with positive refractive power has a convex object-side surface 24412 and a convex image-side surface 24414.
The fifth lens element 2451 with positive refractive power has a convex object-side surface 2452 and a convex image-side surface 24514.
The sixth lens element 2461 with negative refractive power has a concave object-side surface 24612 and a concave image-side surface 24614. Therefore, the angle of incidence of each field of view on the sixth lens 2461 is effectively adjusted to improve aberration.
The seventh lens element 2471 with positive refractive power has a convex object-side surface 24712 and a convex image-side surface 24714. Thereby, the back focal length is advantageously shortened to maintain miniaturization.
The infrared filter 300 is made of glass, and is disposed between the seventh lens element 2471 and the image plane 600 without affecting the focal length of the optical imaging module.
Please refer to the following table three and table four.
TABLE IV aspheric coefficients of the second optical example
In the second optical embodiment, the curve equation of the aspherical surface represents the form as in the first optical embodiment. In addition, the following parameters are defined in the same way as in the first optical embodiment, and are not repeated herein.
The following conditional data values are obtained according to table three and table four:
the following conditional data values are obtained according to table three and table four: and obtaining the data values related to the following contour curve lengths according to the first table and the second table:
the following conditional data values are obtained according to table three and table four:
third optical embodiment
As shown in fig. 18, the focusing lens assembly 240 includes six lens elements 2401 with refractive power, in order from an object side to an image side, a first lens element 2411, a second lens element 2421, a third lens element 2431, a fourth lens element 2441, a fifth lens element 2451 and a sixth lens element 2461, and the focusing lens assembly 240 satisfies the following conditions: 0.1 ≦ InTL/HOS ≦ 0.95. HOS is the distance on the optical axis from the object side surface of the first lens element 2411 to the image plane. The instl is a distance on the optical axis from the object-side surface of the first lens element 2411 to the image-side surface of the sixth lens element 2461.
Referring to fig. 24 and 25, in which fig. 24 is a schematic diagram of a lens assembly of an optical imaging module according to a third optical embodiment of the present invention, and fig. 25 is a graph of spherical aberration, astigmatism and optical distortion of the optical imaging module according to the third optical embodiment in order from left to right. In fig. 24, the optical imaging module 10 includes, in order from an object side to an image side, a first lens element 2411, a second lens element 2421, a third lens element 2431, an aperture stop 250, a fourth lens element 2441, a fifth lens element 2451, a sixth lens element 2461, an infrared filter 300, an image plane 600, and an image sensor 140.
The first lens element 2411 with negative refractive power has a convex object-side surface 24112 and a concave image-side surface 24114, and is made of glass and is spherical.
The second lens element 2421 with negative refractive power is made of glass, and has a concave object-side surface 24212 and a convex image-side surface 24214.
The third lens element 2431 with positive refractive power has a convex object-side surface 24312 and a convex image-side surface 24314, and is aspheric, and the image-side surface 24314 has a inflection point.
The fourth lens element 2441 with negative refractive power has a concave object-side surface 24412 and a concave image-side surface 24414, which are both aspheric, and the image-side surface 24414 has an inflection point.
The fifth lens element 2451 with positive refractive power has a convex object-side surface 2452 and a convex image-side surface 24514.
The sixth lens element 2461 with negative refractive power has a convex object-side surface 24612 and a concave image-side surface 24614, and is aspheric, and the object-side surface 24612 and the image-side surface 24614 have inflection points. Thus, the design is advantageous in shortening the back focal length to maintain miniaturization. In addition, the angle of incidence of the light rays in the off-axis field is effectively suppressed, and the aberration of the off-axis field is further corrected.
The infrared filter 300 is made of glass, and is disposed between the sixth lens element 2461 and the image plane 600 without affecting the focal length of the optical imaging module.
Please refer to table five and table six below.
TABLE VI aspheric coefficients of the third optical example
In the third optical embodiment, the curve equation of the aspherical surface represents the form as in the first optical embodiment. In addition, the following parameters are defined in the same way as in the first optical embodiment, and are not repeated herein.
And obtaining the following conditional value according to the fifth table and the sixth table:
and obtaining the following data values related to the length of the profile curve according to the fifth table and the sixth table:
and obtaining the following conditional value according to the fifth table and the sixth table:
fourth optical embodiment
In one embodiment, as shown in fig. 17, the focusing lens assembly 240 includes five lens elements 2401 with refractive power, in order from an object side to an image side, a first lens element 2411, a second lens element 2421, a third lens element 2431, a fourth lens element 2441 and a fifth lens element 2451, and the focusing lens assembly 240 satisfies the following conditions: 0.1 ≦ InTL/HOS ≦ 0.95. HOS is the distance on the optical axis from the object-side surface of the first lens element 2411 to the image-side surface of the fifth lens element 2451, and untl is the distance on the optical axis from the object-side surface of the first lens element 2411 to the image-side surface of the fifth lens element 2451.
Referring to fig. 26 and 27, in which fig. 26 is a schematic diagram of a lens assembly of an optical imaging module according to a fourth optical embodiment of the present invention, fig. 27 is a graph of spherical aberration, astigmatism and optical distortion of the optical imaging module according to the fourth optical embodiment in order from left to right. In fig. 26, the optical imaging module includes, in order from an object side to an image side, a first lens element 2411, a second lens element 2421, a third lens element 2431, an aperture stop 250, a fourth lens element 2441, a fifth lens element 2451, an ir-pass filter 300, an image plane 600 and an image sensor 140.
The first lens element 2411 with negative refractive power has a convex object-side surface 24112 and a concave image-side surface 24114, and is made of glass and is spherical.
The second lens element 2421 with negative refractive power is made of plastic material, and has a concave object-side surface 24212 and a concave image-side surface 24214, which are both aspheric, and the object-side surface 24212 has a inflection point.
The third lens element 2431 with positive refractive power has a convex object-side surface 24312 and a convex image-side surface 24314, and is aspheric, and the object-side surface 24312 has a inflection point.
The fourth lens element 2441 with positive refractive power has a convex object-side surface 24412 and a convex image-side surface 24414, and is aspheric, and the object-side surface 24412 has a inflection point.
The fifth lens element 2451 with negative refractive power is made of plastic, has a concave object-side surface 2452 and a concave image-side surface 24514, and is aspheric, and the object-side surface 2452 has two inflection points. Thus, the design is advantageous in shortening the back focal length to maintain miniaturization.
The infrared filter 300 is made of glass, and is disposed between the fifth lens 2451 and the imaging plane 600 without affecting the focal length of the optical imaging module.
Please refer to table seven and table eight below.
TABLE eighth and fourth optical examples aspheric coefficients
In a fourth optical embodiment, the curve equation for the aspheric surface represents the form as in the first optical embodiment. In addition, the following parameters are defined in the same way as in the first optical embodiment, and are not repeated herein.
The following conditional data values are obtained according to the seventh table and the eighth table:
and obtaining the data values related to the following contour curve lengths according to the seventh table and the eighth table:
the following conditional data values are obtained according to the seventh table and the eighth table:
fifth optical embodiment
In one embodiment, as shown in fig. 16, the focusing lens assembly 240 includes four lens elements 2401 with refractive power, in order from an object side to an image side, a first lens element 2411, a second lens element 2421, a third lens element 2431 and a fourth lens element 2441, and the focusing lens assembly 240 satisfies the following conditions: 0.1 ≦ InTL/HOS ≦ 0.95. HOS is the distance on the optical axis from the object-side surface of the first lens element 2411 to the image plane, and untl is the distance on the optical axis from the object-side surface of the first lens element 2411 to the image-side surface of the fourth lens element 2441.
Referring to fig. 28 and 29, in which fig. 28 is a schematic diagram of a lens assembly of an optical imaging module according to a fifth optical embodiment of the present invention, and fig. 29 is a graph sequentially showing a spherical aberration curve, an astigmatism curve and an optical distortion curve of the optical imaging module according to the fifth optical embodiment from left to right. In fig. 28, the optical imaging module includes, in order from an object side to an image side, an aperture stop 250, a first lens element 2411, a second lens element 2421, a third lens element 2431, a fourth lens element 2441, an ir-filter 300, an image plane 600 and an image sensor 140.
The first lens element 2411 with positive refractive power has a convex object-side surface 24112 and a convex image-side surface 24114, and is aspheric, and the object-side surface 24112 has a inflection point.
The second lens element 2421 with negative refractive power has a convex object-side surface 24212 and a concave image-side surface 24214, and is aspheric, wherein the object-side surface 24212 has two inflection points and the image-side surface 24214 has one inflection point.
The third lens element 2431 with positive refractive power has a concave object-side surface 24312 and a convex image-side surface 24314, and is aspheric, and has three inflection points on the object-side surface 24312 and one inflection point on the image-side surface 24314.
The fourth lens element 2441 with negative refractive power has a concave object-side surface 24412 and a concave image-side surface 24414, and is aspheric, and has an object-side surface 24412 having two inflection points and an image-side surface 24414 having an inflection point.
The infrared filter 300 is made of glass, and is disposed between the fourth lens element 2441 and the image plane 600 without affecting the focal length of the optical imaging module.
Please refer to table nine and table ten below.
TABLE Ten, aspheric coefficients of the fifth optical example
In a fifth optical embodiment, the curve equation for the aspheric surface represents the form as in the first optical embodiment. In addition, the following parameters are defined in the same way as in the first optical embodiment, and are not repeated herein.
The following conditional data values are obtained according to the ninth table and the tenth table:
the following conditional data values are obtained according to the ninth table and the tenth table:
and obtaining a value related to the length of the contour curve according to the nine and ten tables:
sixth optical embodiment
Referring to fig. 30 and 31, in which fig. 30 is a schematic diagram of a lens assembly of an optical imaging module according to a sixth optical embodiment of the present invention, fig. 31 is a graph of spherical aberration, astigmatism and optical distortion of the optical imaging module according to the sixth optical embodiment in order from left to right. In fig. 30, the optical imaging module includes, in order from an object side to an image side, a first lens element 2411, an aperture stop 250, a second lens element 2421, a third lens element 2431, an ir-pass filter 300, an image plane 600 and an image sensor 140.
The first lens element 2411 with positive refractive power has a convex object-side surface 24112 and a concave image-side surface 24114, and is made of plastic material and is aspheric.
The second lens element 2421 with negative refractive power has a concave object-side surface 24212 and a convex image-side surface 24214, and is aspheric, and the image-side surface 24214 has a inflection point.
The third lens element 2431 with positive refractive power has a convex object-side surface 24312 and a concave image-side surface 24314, and is aspheric, and has two inflection points on the object-side surface 24312 and one inflection point on the image-side surface 24314.
The infrared filter 300 is made of glass, and is disposed between the third lens element 2431 and the image plane 2431 without affecting the focal length of the optical imaging module.
Please refer to the following table eleven and table twelve.
Aspheric coefficients of the twelfth and sixth optical examples
In the sixth optical embodiment, the curve equation of the aspherical surface represents the form as in the first optical embodiment. In addition, the following parameters are defined in the same way as in the first optical embodiment, and are not repeated herein.
The following conditional data values are obtained according to the eleventh and twelfth tables:
the following conditional data values are obtained according to the eleventh and twelfth tables:
obtaining a value related to the length of the profile curve according to a table eleven and a table twelve:
in addition, the present invention provides an optical imaging module 10 including the above embodiments, and applied to one of the group consisting of an electronic portable device, an electronic wearable device, an electronic monitoring device, an electronic information device, an electronic communication device, a machine vision device, and an electronic device for a vehicle.
The utility model discloses an optical imaging module is one of electron portable equipment, electron wearing formula device, electronic monitoring device, electronic information device, electronic communication device, machine vision device and automobile-used electron device constitution group to reach through the battery of lens of different numbers of pieces according to the demand and reduce required mechanism space and improve the screen and look the region.
Referring to fig. 32, an optical imaging module 712 and an optical imaging module 714 (front lens) of the present invention are used in a mobile communication device 71(Smart Phone), FIG. 33 shows an optical imaging module 722 of the present invention used in a motion information device 72(Notebook), figure 34 shows an optical imaging module 732 of the present invention used in a Smart Watch 73(Smart Watch), figure 35 shows an optical imaging module 742 of the present invention used in an intelligent headset 74(Smart Hat), fig. 36 shows an optical imaging module 752 of the present invention used in a security monitoring device 75(IP Cam), fig. 37 shows an optical imaging module 762 of the present invention used in an imaging device 76 for a vehicle, figure 38 shows an optical imaging module 772 of the present invention used in drone aircraft 77, fig. 39 shows the optical imaging module 782 of the present invention used in the extreme motion imaging device 78.
In addition, the present invention provides a method for manufacturing an optical imaging module, as shown in fig. 40, comprising the following steps:
s101: a circuit assembly 100 is provided, and the circuit assembly 100 includes a circuit substrate 120, a plurality of image sensing elements 140, and a plurality of signal conducting elements 160.
S102: the plurality of signal conducting elements 160 are electrically connected between the plurality of circuit contacts 122 on the circuit substrate 120 and the plurality of image contacts 146 on the second surface 144 of each image sensing element 140.
S103: the multi-lens frame 180 is integrally formed, and a plurality of light channels 182 are formed at positions corresponding to the sensing surfaces 1441 on the second surface 144 of each image sensing element 140.
S104: the multi-lens frame 180 is disposed on the circuit assembly 100 and surrounds the plurality of image sensing elements 140 and the plurality of signal transmission elements 160 of the circuit assembly 100.
S105: lens assembly 200 is provided, and lens assembly 200 includes a lens base 220, a plurality of focusing lens groups 240, and a plurality of driving assemblies 260.
S106: the lens base 220 is made of opaque material, and an accommodating hole 2201 is formed on the lens base 220, such that the accommodating hole 2201 penetrates through two ends of the lens base 220 to make the lens base 220 hollow.
S107: the lens base 220 is disposed on the multi-lens frame 180 such that the accommodation hole 2201 communicates with the light passage 182.
S108: disposing at least two lenses 2401 having refractive power in each of the focusing lens groups 240, and allowing each of the focusing lens groups 240 to satisfy the following conditions:
1.0≦f/HEP≦10.0；
0deg<HAF≦150deg；
0mm<PhiD≦18mm；
0< PhiA/PhiD ≦ 0.99; and
0≦2(ARE/HEP)≦2.0。
in the above condition, f is the focal length of the focusing lens assembly 240; HEP is the entrance pupil diameter of the focusing lens group 240; HAF is half of the maximum viewing angle of focusing lens group 240; PhiD is the maximum value of the minimum side length on the plane of the outer periphery of the lens base 220 and perpendicular to the optical axis of the focusing lens group 240; PhiA is the maximum effective diameter of the surface of lens 2401 of focusing lens group 240 closest to the image plane; the ARE is a contour curve length obtained along the contour of the surface of the lens 2401 starting from the intersection of the optical axis with the surface of any lens 2401 of the focusing lens group 240 and ending at a position at a vertical height from the entrance pupil diameter of the optical axis 1/2.
S109: each focusing lens group 240 is disposed on the lens base 220 and located in the containing hole 2201.
S110: adjusting the imaging surface of each focusing lens group 240 of the lens assembly 200, so that the imaging surface of each focusing lens group 240 of the lens assembly 200 is located on the sensing surface 1441 of each image sensing assembly 140, and the optical axis of each focusing lens group 240 overlaps with the central normal of the sensing surface 1441.
S111: each driving element 260 is electrically connected to the circuit substrate 120 and coupled to each focusing lens assembly 240 to drive each focusing lens assembly 240 to move in the direction of the central normal of the sensing surface 1441.
Through the method of S101 to S111, the flatness of the multi-lens frame 180 is ensured by the integral forming property of the multi-lens frame, and through the aa (active alignment) process, in any one of S101 to S111, the relative positions of the components included in the circuit substrate 120, the image sensing device 140, the lens base 220, the plurality of focusing lens sets 240, the plurality of driving devices 260 and the optical imaging module 10 are adjusted, so that the light passes through each focusing lens set 240 in the accommodating hole 2201 and is projected to the sensing surface 1441 through the light channel 182, the imaging surface of each focusing lens set 240 is located on the sensing surface 1441, and the optical axis of each focusing lens set 240 overlaps with the central normal of the sensing surface 1441, so as to ensure the imaging quality.
Referring to fig. 2 to 8 and fig. 41 to 43, the present invention provides an optical imaging module 10, which includes a circuit assembly 100, a lens assembly 200 and a multi-lens outer frame 190. The circuit assembly 100 includes a circuit substrate 120, a plurality of image sensing elements 140, and a plurality of signal transmission elements 160; lens assembly 200 includes a plurality of lens bases 220, a plurality of focusing lens groups 240, and a plurality of driving assemblies 260.
The circuit substrate 120 includes a plurality of circuit contacts 122, each image sensor 140 includes a first surface 142 and a second surface 144, and a maximum value of a minimum side length of the image sensor 140 on a plane perpendicular to the optical axis is LS. The first surface 142 is connected to the circuit substrate 120, and the second surface 144 has a sensing surface 1441 thereon. The signal conducting elements 160 are electrically connected between the circuit contacts 122 of the circuit substrate 120 and the image contacts 146 of the image sensing elements 140.
The lens bases 220 can be made of opaque material, and have a containing hole 2201 penetrating through two ends of the lens base 220 to make the lens base 220 hollow, and the lens base 220 is disposed on the circuit substrate 120, and in one embodiment, the multi-lens frame 180 is disposed on the circuit substrate 120 first, and the lens base 220 is disposed on the multi-lens frame 180 and the circuit substrate 120.
Each focusing lens group 240 has at least two lenses 2401 with refractive power, and is disposed on the lens base 220 and located in the accommodating hole 2201, an imaging surface of each focusing lens group 240 is located on the sensing surface 1441, and an optical axis of each focusing lens group 240 overlaps with a central normal of the sensing surface 1441, so that light passes through each focusing lens group 240 in the accommodating hole 2201 and is projected to the sensing surface 1441, and imaging quality is ensured. In addition, the maximum diameter of the image side surface of the lens closest to the imaging surface in the lens group 240 is denoted by PhiB, and the maximum effective diameter (also referred to as optical exit pupil) of the image side surface of the lens closest to the imaging surface (i.e., image space) in the lens group 240 can be denoted by PhiA.
Each driving element 260 is electrically connected to the circuit substrate 120 and drives each focusing lens assembly 240 to move in the direction of the center normal of the sensing surface 1441, and in an embodiment, the driving element 260 includes a voice coil motor to drive each focusing lens assembly 240 to move in the direction of the center normal of the sensing surface 1441.
In addition, each lens base 220 is fixed in the multi-lens outer frame 190 so as to form the integrated optical imaging module 10, stabilize the structure of the integrated optical imaging module 10, and protect the circuit assembly 100 and the lens assembly 200 from impact, dust, and the like.
And each focusing lens group 240 satisfies the following conditions:
1.0≦f/HEP≦10.0；
0deg<HAF≦150deg；
0mm<PhiD≦18mm；
0< PhiA/PhiD ≦ 0.99; and
0≦2(ARE/HEP)≦2.0
f is the focal length of the focusing lens group; HEP is the diameter of an entrance pupil of the focusing lens group; HAF is half of the maximum viewing angle of the focusing lens group; PhiD is the maximum value of the minimum side length on the plane of the outer periphery of the lens base and vertical to the optical axis of the focusing lens group; PhiA is the maximum effective diameter of the lens surface of the focusing lens group closest to the imaging surface; the ARE is a contour curve length obtained along the contour of a lens surface with a starting point at the intersection of the optical axis with any lens surface of any lens in the focusing lens group and an ending point at a position at a vertical height from the entrance pupil diameter of the optical axis 1/2.
In addition, in the embodiments, the single lens groups included in the optical imaging module provided by the present disclosure are all independently packaged and exist, and the focusing lens groups are all independently packaged and exist, so as to implement respective functions and have good imaging quality.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (28)
1. An optical imaging module comprising a circuit assembly and a lens assembly,
a circuit assembly, comprising:
a circuit substrate including a plurality of circuit contacts;
the image sensing device comprises a plurality of image sensing components, a circuit substrate and a plurality of image sensing units, wherein each image sensing component comprises a first surface and a second surface, the first surface is connected with the circuit substrate, and the second surface is provided with a sensing surface and a plurality of image contacts;
a plurality of signal conducting components electrically connected between the plurality of circuit contacts on the circuit substrate and the plurality of image contacts of each image sensing component; and
a multi-lens frame which is manufactured in an integrated forming mode, covers the circuit substrate, surrounds the image sensing assembly and the signal transmission assemblies, and is provided with a plurality of optical channels corresponding to the sensing surfaces of the image sensing assemblies; and
a lens assembly, comprising:
the lens bases are made of light-tight materials and provided with accommodating holes penetrating through two ends of the lens bases so that the lens bases are hollow, and the lens bases are arranged on the multi-lens frame so that the accommodating holes are communicated with the optical channel; and
a plurality of focusing lens groups, each of which has at least two lenses with refractive power, is disposed on the lens base and is located in the accommodating hole, an imaging surface of each of the focusing lens groups is located on the sensing surface, and an optical axis of each of the focusing lens groups overlaps with a central normal of the sensing surface, so that light passes through each of the focusing lens groups in the accommodating hole, passes through the optical channel, and then is projected onto the sensing surface; and
the driving components are electrically connected with the circuit substrate and drive the focusing lens groups to move in the direction of the central normal of the sensing surface;
wherein the focusing lens group satisfies the following conditions:
1.0≦f/HEP≦10.0；
0deg<HAF≦150deg；
0mm<PhiD≦18mm；
0< PhiA/PhiD ≦ 0.99; and
0.9≦2(ARE/HEP)≦2.0
wherein f is the focal length of the focusing lens group; HEP is the diameter of an entrance pupil of the focusing lens group; HAF is half of the maximum viewing angle of the focusing lens group; PhiD is the maximum value of the minimum side length on a plane which is perpendicular to the optical axis of the focusing lens group and is arranged at the outer periphery of the lens base; PhiA is the maximum effective diameter of the lens surface of the focusing lens group closest to the imaging surface; the ARE is a contour curve length obtained along a contour of any one of the lens surfaces in the focusing lens group, starting at an intersection of the lens surface with the optical axis and ending at a position at a vertical height from the optical axis 1/2 entrance pupil diameter.
2. The optical imaging module of claim 1, wherein the lens base includes a lens barrel and a lens holder, the lens barrel has an upper through hole penetrating through two ends of the lens barrel, the lens holder has a lower through hole penetrating through two ends of the lens holder, the lens barrel is disposed in the lens holder and located in the lower through hole, the upper through hole and the lower through hole are communicated to form the accommodating hole, the lens holder is fixed on the multi-lens frame, the image sensing assembly is located in the lower through hole, the upper through hole of the lens barrel faces the sensing surface of the image sensing assembly, the focusing lens group is disposed in the lens barrel and located in the upper through hole, and the driving assembly drives the lens barrel to move in a central normal direction of the sensing surface relative to the lens holder, and PhiD refers to a maximum value of a minimum side length on a plane of an outer periphery of the lens holder and perpendicular to an optical axis of the focusing lens group.
3. The optical imaging module of claim 1, comprising at least one data transmission line electrically connected to the circuit substrate and transmitting the sensing signals generated by the image sensing elements.
4. The optical imaging module of claim 1, wherein the plurality of image sensing elements sense a plurality of color images.
5. The optical imaging module of claim 1 wherein at least one of said image sensing devices senses black and white images and at least one of said image sensing devices senses color images.
6. The optical imaging module of claim 1, comprising a plurality of infrared filters, wherein the infrared filters are disposed in the lens base and located in the receiving holes above the image sensor assembly.
7. The optical imaging module of claim 2, comprising a plurality of infrared filters, and each of the infrared filters is disposed in the lens barrel or the lens holder and above the image sensor assembly.
8. The optical imaging module of claim 1, comprising a plurality of infrared filters, and the lens base comprises a filter holder, wherein the filter holder has filter through holes penetrating through two ends of the filter holder, and the infrared filters are disposed in the filter holder and located in the filter through holes, and the filter holder is disposed on the multi-lens frame corresponding to the positions of the optical channels, such that the infrared filters are located above the image sensor assembly.
9. The optical imaging module of claim 8, wherein the lens base comprises a lens barrel and a lens holder; the lens barrel is provided with an upper through hole penetrating through two ends of the lens barrel, the lens support is provided with a lower through hole penetrating through two ends of the lens support, and the lens barrel is arranged in the lens support and positioned in the lower through hole; the lens bracket is fixed on the optical filter bracket, and the lower through hole is communicated with the upper through hole and the optical filter through hole to jointly form the accommodating hole, so that the image sensing assembly is positioned in the optical filter through hole, and the upper through hole of the lens cone is opposite to the sensing surface of the image sensing assembly; in addition, the focusing lens group is arranged in the lens barrel and is positioned in the upper through hole.
10. The optical imaging module according to claim 1, wherein the material of the multi-lens frame is any one of a thermoplastic resin and an industrial plastic.
11. The optical imaging module of claim 1, wherein the multi-lens frame comprises a plurality of lens holders, and each lens holder has the light channel and a central axis, and the central axis distance of each lens holder is between 2mm and 200 mm.
12. The optical imaging module of claim 1, wherein the drive assembly comprises a voice coil motor.
13. The optical imaging module of claim 1, wherein the multi-lens frame has an outer surface, a first inner surface, and a second inner surface; the outer surface extends from the edge of the circuit substrate and has an inclination angle alpha with the central normal of the sensing surface, and the angle alpha is between 1 and 30 degrees; the first inner surface is the inner surface of the light channel, and the first inner surface and the central normal of the sensing surface have an inclination angle beta which is between 1 and 45 degrees; the second inner surface extends from the top surface of the circuit substrate to the optical channel direction and has an inclination angle gamma with the central normal of the sensing surface, and gamma ranges from 1 degree to 3 degrees.
14. The optical imaging module of claim 1, wherein the plurality of focusing lens groups are a first lens group and a second lens group, respectively, and the angle of view FOV of the second lens group is larger than the first lens group.
15. The optical imaging module of claim 1, wherein the plurality of focusing lens groups are a first lens group and a second lens group, respectively, and the focal length of the first lens group is larger than that of the second lens group.
16. The optical imaging module of claim 1, wherein the optical imaging module has at least three focusing lens groups, namely a first lens group, a second lens group and a third lens group, and the FOV of the viewing angle of the second lens group is larger than that of the first lens group, and the FOV of the viewing angle of the second lens group is larger than 46 °, and a plurality of color images are sensed by each of the plurality of image sensing components receiving the light from the first lens group and the second lens group.
17. The optical imaging module of claim 1, wherein the optical imaging module has at least three focusing lens sets, namely a first lens set, a second lens set and a third lens set, and the focal length of the first lens set is larger than that of the second lens set, and each of the image sensing devices receiving light from the first lens set and the second lens set senses a plurality of color images.
18. The optical imaging module of claim 9, wherein the following condition is satisfied:
0< (TH1+ TH2)/HOI ≦ 0.95; wherein TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel; the HOI is the maximum imaging height perpendicular to the optical axis on the imaging plane.
19. The optical imaging module of claim 9, wherein the following condition is satisfied:
0mm < TH1+ TH2 ≦ 1.5 mm; wherein TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel.
20. The optical imaging module of claim 9, wherein the following condition is satisfied:
0< (TH1+ TH2)/HOI ≦ 0.95; wherein TH1 is the maximum thickness of the lens holder; TH2 is the minimum thickness of the lens barrel; the HOI is the maximum imaging height perpendicular to the optical axis on the imaging plane.
21. The optical imaging module of claim 1, wherein the following condition is satisfied:
wherein 0.9 ≦ ARS/EHD ≦ 2.0; the ARS is a contour curve length obtained along the contour of the lens surface by taking the intersection point of any lens surface of any lens in the focusing lens group and the optical axis as a starting point and the maximum effective radius of the lens surface as an end point; the EHD is the maximum effective radius of any surface of any lens in the focusing lens group.
22. The optical imaging module of claim 1, wherein the following condition is satisfied:
PLTA ≦ 100 μm; PSTA ≦ 100 μm; NLTA ≦ 100 μm; and
NSTA≦100μm；SLTA≦100μm；SSTA≦100μm；
wherein HOI is the maximum imaging height perpendicular to the optical axis on the imaging surface; PLTA is the lateral aberration of the longest operating wavelength of visible light of the forward meridian plane light fan of the optical imaging module passing through the edge of the entrance pupil and incident at 0.7HOI on the imaging plane; PSTA is the transverse aberration of the shortest visible light operating wavelength of a forward meridian plane light fan of the optical imaging module, which passes through the edge of the entrance pupil and is incident on the imaging plane at 0.7 HOI; NLTA is the transverse aberration of the longest working wavelength of the visible light of the negative meridian plane light fan of the optical imaging module passing through the edge of the entrance pupil and incident on the imaging plane at 0.7 HOI; NSTA is a transverse aberration of the optical imaging module, which is incident on the imaging plane at 0.7HOI, when the shortest visible light operating wavelength of the negative meridian plane light fan passes through the edge of the entrance pupil; SLTA is the transverse aberration of the longest working wavelength of visible light of a sagittal plane light fan of the optical imaging module passing through the edge of the entrance pupil and being incident on the imaging plane at 0.7 HOI; SSTA is the transverse aberration of the shortest visible operating wavelength of the sagittal plane light fan of the optical imaging module passing through the edge of the entrance pupil and incident on the imaging plane at 0.7 HOI.
23. The optical imaging module of claim 1, wherein the focusing lens assembly comprises four lens elements with refractive power, in order from an object side to an image side, a first lens element, a second lens element, a third lens element and a fourth lens element, and the focusing lens assembly satisfies the following conditions:
0.1≦InTL/HOS≦0.95；
wherein HOS is a distance on an optical axis from an object side surface of the first lens to the image plane; the InTL is the distance from the object side surface of the first lens to the image side surface of the fourth lens on the optical axis.
24. The optical imaging module of claim 1, wherein the focusing lens assembly comprises five lens elements with refractive power, in order from an object side to an image side, the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element, and the focusing lens assembly satisfies the following condition:
0.1≦InTL/HOS≦0.95；
wherein HOS is a distance on an optical axis from an object side surface of the first lens to the image plane; the InTL is the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis.
25. The optical imaging module of claim 1, wherein the focusing lens assembly comprises six lenses with refractive power, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element, and the focusing lens assembly satisfies the following condition:
0.1≦InTL/HOS≦0.95；
wherein HOS is a distance on an optical axis from an object side surface of the first lens to the image plane; the InTL is the distance from the object side surface of the first lens to the image side surface of the sixth lens on the optical axis.
26. The optical imaging module of claim 1, wherein the focusing lens assembly comprises seven lens elements with refractive power, in order from an object side to an image side, the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element, and the focusing lens assembly satisfies the following condition:
0.1≦InTL/HOS≦0.95；
wherein HOS is a distance on an optical axis from an object side surface of the first lens to the image plane; the InTL is the distance from the object side surface of the first lens to the image side surface of the seventh lens on the optical axis.
27. The optical imaging module of claim 1 comprising an aperture, and wherein the aperture satisfies the following formula: 0.2 ≦ InS/HOS ≦ 1.1; wherein InS is the distance between the diaphragm and the imaging surface on the optical axis; HOS is the distance from the lens surface of the focusing lens group which is farthest away from the imaging surface to the imaging surface on the optical axis.
28. An optical imaging module, comprising:
a circuit assembly, comprising:
a circuit substrate including a plurality of circuit contacts;
the image sensing device comprises a plurality of image sensing components, a circuit substrate and a plurality of image sensing units, wherein each image sensing component comprises a first surface and a second surface, the first surface is connected with the circuit substrate, and the second surface is provided with a sensing surface and a plurality of image contacts;
a plurality of signal conducting components electrically connected between the plurality of circuit contacts on the circuit substrate and the plurality of image contacts of each image sensing component;
a multi-lens frame which is manufactured in an integrated forming mode, covers the circuit substrate, surrounds the image sensing assembly and the signal transmission assemblies, and is provided with a plurality of optical channels corresponding to the sensing surfaces of the image sensing assemblies; and
a lens assembly, comprising:
the lens bases are made of light-tight materials and provided with accommodating holes penetrating through two ends of the lens bases so that the lens bases are hollow, and the lens bases are arranged on the circuit substrate so that the accommodating holes are communicated with the optical channel; and
the focusing lens groups are provided with at least two lenses with refractive power, arranged on the lens base and positioned in the accommodating holes, the imaging surfaces of the focusing lens groups are positioned on the sensing surface, the optical axes of the focusing lens groups are overlapped with the central normal of the sensing surface, and light rays are projected to the sensing surface after passing through the focusing lens groups in the accommodating holes; and
the driving components are electrically connected with the circuit substrate and drive the focusing lens groups to move in the direction of the central normal of the sensing surface; and
a multi-lens outer frame to which the lens bases are respectively fixed so as to be integrated;
wherein the focusing lens group satisfies the following conditions:
1.0≦f/HEP≦10.0；
0deg<HAF≦150deg；
0mm<PhiD≦18mm；
0< PhiA/PhiD ≦ 0.99; and
0.9≦2(ARE/HEP)≦2.0
wherein f is the focal length of the focusing lens group; HEP is the diameter of an entrance pupil of the focusing lens group; HAF is half of the maximum viewing angle of the focusing lens group; PhiD is the maximum value of the minimum side length on a plane which is perpendicular to the optical axis of the focusing lens group and is arranged at the outer periphery of the lens base; PhiA is the maximum effective diameter of the lens surface of the focusing lens group closest to the imaging surface; the ARE is a contour curve length obtained along a contour of any one of the lens surfaces in the focusing lens group, starting at an intersection of the lens surface with the optical axis and ending at a position at a vertical height from the optical axis 1/2 entrance pupil diameter.
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| CN110837166A (en) * | 2018-08-16 | 2020-02-25 | 先进光电科技股份有限公司 | Optical imaging module |
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