CN114879349B - Optical image capturing lens assembly - Google Patents
Optical image capturing lens assembly Download PDFInfo
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- CN114879349B CN114879349B CN202210621702.6A CN202210621702A CN114879349B CN 114879349 B CN114879349 B CN 114879349B CN 202210621702 A CN202210621702 A CN 202210621702A CN 114879349 B CN114879349 B CN 114879349B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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Abstract
The invention provides an optical image capturing lens assembly, which sequentially comprises from an object side to an image side: a tablet assembly; a first lens element with negative refractive power having at least one of an object-side surface and an image-side surface thereof being aspheric; a second lens element with positive refractive power having at least one of an object-side surface and an image-side surface thereof being aspheric; the third lens element with positive refractive power has at least one of an object-side surface and an image-side surface being aspheric; the distance from the object on the object side surface of the flat component to the imaging plane on the optical axis is OTL, the distance from the image side surface of the flat component to the imaging plane on the optical axis is PTL, the distance from the first lens object side surface to the imaging plane on the optical axis is TTL, the imaging plane image height is HT, the object height at the position where the chief ray of the imaging plane image height corresponds to the image side surface of the flat component is P, and the following conditions are satisfied: 6.47< OTL/HT <10.8;7.45< p/HT <12.75;1.17< PTL/TTL <1.55.
Description
Technical Field
The present invention relates to an optical image capturing device, and more particularly to an optical image capturing lens assembly.
Background
In general, the under-screen optical fingerprint technology mainly uses single-point technology as main development focus from the early stage of development. As technology becomes more mature and more complex, fingerprint technology is developed towards large-area fingerprint recognition. The single-point optical fingerprint has two main design structures, one is a collimator structure and the other is a lens structure. The collimator structure has high cost due to the adoption of the semiconductor process, but has the advantage of thin thickness. The lens structure has cost advantage due to the adoption of the traditional packaging mode, but how to reduce the thickness is always one of the technical development directions.
Therefore, how to provide an optical imaging device capable of solving the above problems is an important issue for the industry to consider.
Disclosure of Invention
In view of the above, the present disclosure uses the concept of fisheye design, so that the lens design has distortion characteristics, effectively increases the fingerprint area and matches the distortion image processing technology, and greatly improves the fingerprint area by more than 50% on the premise that the thickness of the effective reduction fingerprint feature module is acceptable. The present disclosure provides an optical image capturing lens assembly, comprising, in order from an object side to an image side: a tablet assembly; a first lens element with negative refractive power having at least one of an object-side surface and an image-side surface thereof being aspheric; a second lens element with positive refractive power having at least one of an object-side surface and an image-side surface thereof being aspheric; the third lens element with positive refractive power has at least one of an object-side surface and an image-side surface being aspheric; the distance from the object on the object side surface of the flat component to the imaging surface on the optical axis is OTL, the distance from the image side surface of the flat component to the imaging surface on the optical axis is PTL, the distance from the first lens object side surface to the imaging surface on the optical axis is TTL, the imaging surface imaging height is HT, the chief ray of the imaging surface imaging height corresponds to the object height P on the image side surface of the flat component, and the following conditions are satisfied: 6.47< OTL/HT <10.8;7.45< p/HT <12.75;1.17< PTL/TTL <1.55.
According to one or more embodiments of the present disclosure, and satisfies the following conditions: 3.45< PTL <4.98.
According to one or more embodiments of the present disclosure, the overall focal length of the optical imaging lens assembly is EFL, and satisfies the following conditions: 1.52< HT/EFL <2.27.
According to one or more embodiments of the present disclosure, the focal length of the first lens is F1, and the following conditions are satisfied: -0.55< EFL/F1< -0.31.
According to one or more embodiments of the present disclosure, the focal length of the second lens is F2, and the following condition is satisfied: 0.02< EFL/F2<0.26.
According to one or more embodiments of the present disclosure, the focal length of the third lens is F3, and the following condition is satisfied: 0.47< EFL/F3<0.64.
According to one or more embodiments of the present disclosure, the radius of curvature of the object-side surface of the first lens element is R1, and satisfies the following condition: -1.79< f1/R1<0.06.
According to one or more embodiments of the present disclosure, the radius of curvature of the first lens image side surface is R2, and satisfies the following condition: -4.25< F1/R2< -1.43.
According to one or more embodiments of the present disclosure, the radius of curvature of the object-side surface of the second lens element is R3, and satisfies the following condition: 0.73< F2/R3<9.05.
According to one or more embodiments of the present disclosure, the radius of curvature of the second lens-side surface is R4, and satisfies the following condition: -0.96< f2/R4<7.48.
According to one or more embodiments of the present disclosure, the radius of curvature of the object-side surface of the third lens element is R5, and satisfies the following condition: 0.28< F3/R5<1.01.
According to one or more embodiments of the present disclosure, the radius of curvature of the third lens-side surface is R6, and satisfies the following condition: -1.36< F3/R6< -0.67.
According to one or more embodiments of the present disclosure, a chief ray of the image height of the imaging plane corresponds to an object height H at an object side surface of the flat panel device, and satisfies the following conditions: 9.84< H/HT <14.80.
According to one or more embodiments of the present disclosure, the focal length of the second lens is F2, and the focal length of the third lens is F3, and the following conditions are satisfied: 2.48< F2/F3<32.49.
Drawings
The foregoing and other objects, features, advantages and embodiments of the invention will be more readily apparent from the following description of the drawings in which:
FIG. 1 is a schematic diagram of an optical imaging lens assembly according to an embodiment of the invention.
Fig. 2 is a partial enlarged view of fig. 1.
Various features and elements are not drawn to scale in accordance with conventional practice in the drawings in a manner that best serves to illustrate the specific features and elements that are pertinent to the present invention. In addition, like components and parts are designated by the same or similar reference numerals among the different drawings.
Reference numerals: 1: optical image capturing lens assembly
5: flat plate assembly
5a: object side surface of the flat component 5
5b: image side surface of flat component 5
10: first lens
10a: the object side surface of the first lens 10
10b: the image side surface of the first lens 10
20: second lens
20a: the object side surface of the second lens 20
20b: the image side surface of the second lens 20
30: third lens
30a: object-side surface of the third lens 10
30b: the image side surface of the third lens 10
70: optical filter assembly
70a, 70b: surface of the body
80: imaging surface
90: optical axis
O: object to be photographed
P: the principal ray of the imaging plane image height HT corresponds to the object height at the image side surface 5b of the flat panel component 5
HT: imaging surface image height
OTL: distance of subject O on object side surface 5a of flat component 5 to imaging plane 80 on optical axis 90
PTL: distance between image side surface 5b of flat component 5 and imaging plane 80 on optical axis 90
TTL: the distance from the object side surface 10a of the first lens to the imaging surface 80 on the optical axis 90.
Detailed Description
For a further understanding and appreciation of the objects, shapes, structural device features, and efficacy of the invention, the embodiments will be described in detail below with reference to the drawings.
The following disclosure provides various embodiments or examples to implement various features of the provided objects. Specific examples of components and arrangements are described below for purposes of simplifying the disclosure and are not intended to be limiting; the size and shape of the components are not limited by the disclosed ranges or values, but may depend on the processing conditions or desired characteristics of the components. For example, the technical features of the present invention are described using cross-sectional views, which are schematic illustrations of idealized embodiments. Thus, variations in the shapes of the illustrations as a result of manufacturing processes and/or tolerances are to be expected and should not be construed as limiting.
Furthermore, spatially relative terms, such as "below," "under …," "below," "over …," and "above," and the like, may be used for ease of description of the relationship between elements or features depicted in the drawings; further, spatially relative terms may be intended to encompass different orientations of the component in use or operation in addition to the orientation depicted in the figures.
Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic diagram of an optical imaging lens assembly according to an embodiment of the invention. Fig. 2 is a partial enlarged view of fig. 1. As shown in fig. 1 and 2, the optical imaging lens assembly 1 sequentially includes, from an object side to an image side: a flat component 5, a first lens 10, a second lens 20 and a third lens 30. The flat component 5 may be a display (e.g. OLED, TFT-LCD) or a flat glass. The first lens element 10 with negative refractive power has an object-side surface 10a and/or an image-side surface 10 b. The second lens element 20 with positive refractive power has at least one of an object-side surface 20a and an image-side surface 20b of the second lens element 20 being aspheric. The third lens element 30 with positive refractive power has an object-side surface 30a and/or an image-side surface 30b of the third lens element 30.
As shown in fig. 1 and 2, the distance between the object O on the object side surface 5a of the flat component 5 and the imaging plane 80 on the optical axis 90 is OTL. The distance from the image side surface 5b of the flat component 5 to the imaging surface 80 on the optical axis 90 is PTL. The distance from the object side surface 10a of the first lens element to the image plane 80 on the optical axis 90 is TTL, the image plane image height is HT, the chief ray of the image plane image height HT corresponds to the object height P at the image side surface 5b of the flat component 5, and the following condition is satisfied: 6.47< OTL/HT <10.8;7.45< p/HT <12.75;1.17< PTL/TTL <1.55.
As shown in fig. 1 and 2, in one embodiment of the present invention, the optical imaging lens assembly 1 further includes an aperture stop, for example, located between the first lens element 10 and the second lens element 20. In addition, the optical image capturing lens assembly 1 further includes a filtering element 70, wherein the filtering element 70 is disposed between the third lens element 30 and the image plane 80, for example, an infrared filtering element (IR Filter), and both surfaces 70a and 70b are planar, and are made of glass for filtering light rays in a specific wavelength region.
Next, please refer to the optical imaging lens assembly 1 of each of the embodiments E1 to E12 shown in the following table 1. The parameters associated with table 1 are described herein as follows:
p represents the principal ray of the imaging plane image height HT corresponding to the object height at the image side surface 5b of the flat panel device 5.
HT denotes the imaging plane image height.
OTL denotes a distance on the optical axis 90 from the subject O at the object side surface 5a of the flat component 5 to the imaging plane 80.
PTL denotes a distance on the optical axis 90 from the image side surface 5b of the flat component 5 to the imaging plane 80.
TTL represents the distance between the object-side surface 10a of the first lens element and the image plane 80 on the optical axis 90.
EFL represents the overall focal length of the optical imaging lens group 1.
F1 denotes a focal length of the first lens 10.
F2 denotes the focal length of the second lens 20.
F3 denotes the focal length of the third lens 30.
R1 represents a radius of curvature of the object-side surface 10a of the first lens 10.
R2 represents a radius of curvature of the image side surface 10b of the first lens 10.
R3 represents a radius of curvature of the object-side surface 20a of the second lens 20.
R4 represents a radius of curvature of the image side surface 20b of the second lens 20.
R5 represents a radius of curvature of the object-side surface 30a of the third lens 30.
R6 represents a radius of curvature of the image side surface 30b of the third lens 30.
H represents the object height at the object side surface of the plate element corresponding to the principal ray of the image height of the image plane.
It should be noted that, in the first to twelfth embodiments (E1) to (E12) of the present invention, the respective appearance designs of the first lens element 10, the second lens element 20 and the third lens element 30 are different according to the functional requirements. In addition, the relevant design parameters are also different. The description is as follows:
as shown in table 1, in the first embodiment (E1) of the present invention, the optical imaging lens assembly 1 further comprises, in order from the object side to the image side, as described above with reference to fig. 1 and 2: a flat component 5, a first lens 10, a second lens 20 and a third lens 30. The flat component 5 may be a display (e.g. OLED, TFT-LCD) or a flat glass. The first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a slightly convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a planar object-side surface 30a and a convex image-side surface 30 b. The optical image capturing lens assembly 1 further comprises an aperture stop, for example, between the first lens element 10 and the second lens element 20. In addition, the optical image capturing lens assembly 1 further includes a filtering element 70, wherein the filtering element 70 is disposed between the third lens element 30 and the image plane 80, for example, an infrared filtering element (IR Filter), and both surfaces 70a and 70b are planar, and are made of glass for filtering light rays in a specific wavelength region.
In particular, as shown in table 1, in the first embodiment (E1) of the present invention, the relevant parameters are as follows: P/HT is 9.73; OTL/HT is 6.47; PTL is 4.00; PTL/TTL is 1.29; HT/EFL is 2.02; EFL/F1 is-0.43; EFL/F2 is 0.26; EFL/F3 is 0.64; F1/R1 is-0.84; F1/R2 is-3.14; F2/R3 is 1.50; F2/R4 is-0.45; F3/R5 is 0.44; F3/R6 is-1.22; H/HT is 11.18; F2/F3 is 2.48.
In addition, refer to the following tables 2 and 3 again.
Table 2 shows detailed structural data of the first embodiment, including surface form, radius of curvature, thickness, refractive index and abbe number, wherein the unit of radius of curvature, thickness is mm, and surfaces 0 to 12 represent surfaces from the object side to the image side in order. Table 3 shows the aspherical coefficients of each lens in the first embodiment, which is calculated according to the following aspherical curve equation:
wherein z is a position value referenced to the surface vertex at a position of height Y in the optical axis direction; CURV is the curvature of the lens surface near the optical axis and is the inverse of the radius of curvature (R) (curv=1/R), R is the radius of curvature of the lens surface near the optical axis, Y is the perpendicular distance of the lens surface from the optical axis, K is the conic constant, and A, B, C, D, E, F, G, H, I, J … … is the higher order aspheric coefficient. In addition, the definition of the data in the tables of the following embodiments is the same as that of the tables 2 and 3 of the first embodiment, and the description thereof is omitted herein.
Regarding the second embodiment (E2) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a slightly convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a slightly convex object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 4 and 5 are referred to together.
In the second embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
Regarding the third embodiment (E3) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a convex object-side surface 20a and a slightly convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a convex object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 6 and 7 are referred to together.
In a third embodiment, the curve equation for the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
Regarding the fourth embodiment (E4) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a slightly convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a convex object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 8 and 9 are referred to together.
In the fourth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
Regarding the fifth embodiment (E5) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a slightly convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a convex object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 10 and 11 are referred to together.
In the fifth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
Regarding the sixth embodiment (E6) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a slightly convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a convex object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 12 and 13 are referred to together.
In the sixth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
Regarding the seventh embodiment (E7) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a slightly convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a convex object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 14 and 15 are referred to together.
In the seventh embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
Regarding the eighth embodiment (E8) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a slightly convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a slightly concave object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 16 and 17 are referred to together.
In the eighth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
Regarding the ninth embodiment (E9) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a slightly concave object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 18 and 19 are referred to together.
In the ninth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
Regarding the tenth embodiment (E10) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a slightly convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a slightly convex object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 20 and 21 are referred to together.
In the tenth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
Regarding the eleventh embodiment (E11) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a slightly concave object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 22 and 23 are referred to together.
In the eleventh embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
Regarding the twelfth embodiment (E12) of the present invention, the difference from the first embodiment (E1) of the present invention is that: the first lens element 10 with negative refractive power has a slightly concave object-side surface 10a near the optical axis 90, and a concave image-side surface 10b near the optical axis 90. The second lens element 20 with positive refractive power has a convex object-side surface 20a and a convex image-side surface 20b near the optical axis 90. The third lens element 30 with positive refractive power has a planar object-side surface 30a and a convex image-side surface 30 b. In addition, referring to table 1, the relevant parameters are not described herein.
Further, the following tables 24 and 25 are referred to together.
In the twelfth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definition of the table parameters is the same as that of the first embodiment, and will not be repeated here.
In summary, the optical imaging lens assembly 1 according to the embodiment of the invention at least satisfies the following conditions as described above with reference to fig. 1 and 2: 6.47< OTL/HT <10.8;7.45< p/HT <12.75;1.17< PTL/TTL <1.55.
In other embodiments of the invention, the following conditions are met therein: 3.45< PTL <4.98.
In the optical imaging lens assembly 1 according to other embodiments of the present invention, the overall focal length of the optical imaging lens assembly is EFL, and the following conditions are satisfied: 1.52< HT/EFL <2.27.
In the optical imaging lens assembly 1 according to other embodiments of the present invention, the focal length of the first lens is F1, and the following conditions are satisfied: -0.55< EFL/F1< -0.31.
In the optical imaging lens assembly 1 according to other embodiments of the present invention, the focal length of the second lens is F2, and the following condition is satisfied: 0.02< EFL/F2<0.26.
In the optical imaging lens assembly 1 according to other embodiments of the present invention, the focal length of the third lens element is F3, and the following condition is satisfied: 0.47< EFL/F3<0.64.
In the optical imaging lens assembly 1 according to another embodiment of the present invention, the radius of curvature of the object-side surface of the first lens element is R1, and the following condition is satisfied: -1.79< f1/R1<0.06. In the optical imaging lens group 1 of the other embodiment of the present invention, wherein the radius of curvature of the first lens image side surface is R2, the following condition is satisfied: -4.25< F1/R2< -1.43.
In the optical imaging lens assembly 1 according to another embodiment of the present invention, the radius of curvature of the object-side surface of the second lens element is R3, and the following condition is satisfied: 0.73< F2/R3<9.05.
In the optical imaging lens group 1 of the other embodiment of the present invention, wherein the radius of curvature of the second lens-image-side surface is R4, the following condition is satisfied: -0.96< f2/R4<7.48.
In the optical imaging lens assembly 1 according to another embodiment of the present invention, the radius of curvature of the object-side surface of the third lens element is R5, and the following condition is satisfied: 0.28< F3/R5<1.01.
In the optical imaging lens group 1 of the other embodiment of the present invention, wherein the radius of curvature of the third lens-side surface is R6, the following condition is satisfied: -1.36< F3/R6< -0.67.
In the optical imaging lens assembly 1 according to another embodiment of the present invention, a principal ray of the image height of the imaging plane corresponds to an object height H at the object side surface of the flat component, and the following condition is satisfied: 9.84< H/HT <14.80.
In the optical imaging lens assembly 1 according to another embodiment of the present invention, the focal length of the second lens is F2, and the focal length of the third lens is F3, and the following conditions are satisfied: 2.48< F2/F3<32.49.
In summary, in the optical imaging lens assembly 1 of the present invention, the ratio of the fingerprint area to the sensor area is between 9.84 and 14.8. The optical imaging lens assembly 1 of each embodiment of the invention uses the fish-eye design concept, so that the lens design has distortion characteristics, the fingerprint area is effectively increased, the distortion image processing technology is matched, and the fingerprint area is greatly increased by more than 50% on the premise that the thickness of the fingerprint feature module is effectively reduced to be acceptable.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention.
Claims (14)
1. An optical image capturing lens assembly, comprising, in order from an object side to an image side:
a tablet assembly;
a first lens element with negative refractive power having at least one of an object-side surface and an image-side surface thereof being aspheric;
a second lens element with positive refractive power having at least one of an object-side surface and an image-side surface thereof being aspheric; and
a third lens element with positive refractive power having at least one of an object-side surface and an image-side surface thereof being aspheric;
the distance from the object on the object side surface of the flat component to the imaging plane on the optical axis is OTL, the distance from the image side surface of the flat component to the imaging plane on the optical axis is PTL, the distance from the first lens object side surface to the imaging plane on the optical axis is TTL, the imaging plane image height is HT, the object height at the position where the chief ray of the imaging plane image height corresponds to the image side surface of the flat component is P, and the following conditions are satisfied: 6.47< OTL/HT <10.8;7.45< p/HT <12.75;1.17< PTL/TTL <1.55;
wherein, the number of lenses in the optical imaging lens group is only three.
2. The optical imaging lens assembly of claim 1, wherein the following condition is satisfied: 3.45< PTL <4.98.
3. The optical imaging lens assembly of claim 1, wherein the overall focal length of the optical imaging lens assembly is EFL and satisfies the following condition: 1.52< HT/EFL <2.27.
4. The optical imaging lens assembly of claim 1, wherein the overall focal length of the optical imaging lens assembly is EFL and the focal length of the first lens is F1, and the following conditions are satisfied: -0.55< EFL/F1< -0.31.
5. The optical imaging lens assembly of claim 1, wherein the overall focal length of the optical imaging lens assembly is EFL and the focal length of the second lens is F2, and the following conditions are satisfied: 0.02< EFL/F2<0.26.
6. The optical imaging lens assembly of claim 1, wherein the overall focal length of the optical imaging lens assembly is EFL and the focal length of the third lens element is F3, and the following conditions are satisfied: 0.47< EFL/F3<0.64.
7. The optical imaging lens assembly of claim 1, wherein a focal length of said first lens element is F1 and a radius of curvature of an object-side surface of said first lens element is R1, and wherein: -1.79< f1/R1<0.06.
8. The optical imaging lens assembly as claimed in claim 1, wherein a focal length of the first lens is F1 and a radius of curvature of a mirror-image side surface of the first lens is R2, and the following condition is satisfied: -4.25< F1/R2< -1.43.
9. The optical imaging lens assembly of claim 1, wherein a focal length of said second lens element is F2 and a radius of curvature of an object-side surface of said second lens element is R3, and wherein: 0.73< F2/R3<9.05.
10. The optical imaging lens assembly as claimed in claim 1, wherein a focal length of the second lens is F2 and a radius of curvature of a mirror-image side surface of the second lens is R4, and the following condition is satisfied: -0.96< f2/R4<7.48.
11. The optical imaging lens assembly of claim 1, wherein a focal length of the third lens element is F3 and a radius of curvature of an object-side surface of the third lens element is R5, and wherein: 0.28< F3/R5<1.01.
12. The optical imaging lens assembly as claimed in claim 1, wherein a focal length of the third lens is F3 and a radius of curvature of a mirror-image side surface of the third lens is R6, and the following condition is satisfied: -1.36< F3/R6< -0.67.
13. The optical imaging lens assembly of claim 1, wherein a chief ray of an imaging plane image height corresponds to an object height H at an object side surface of the flat panel device, and the following condition is satisfied: 9.84< H/HT <14.80.
14. The optical imaging lens assembly of claim 1, wherein the second lens has a focal length F2 and the third lens has a focal length F3, and the following condition is satisfied: 2.48< F2/F3<32.49.
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| CN202210621702.6A CN114879349B (en) | 2022-06-02 | 2022-06-02 | Optical image capturing lens assembly |
| TW111121287A TWI814430B (en) | 2022-06-02 | 2022-06-08 | Optical imaging lens group |
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| CN202210621702.6A CN114879349B (en) | 2022-06-02 | 2022-06-02 | Optical image capturing lens assembly |
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| CN114879349A CN114879349A (en) | 2022-08-09 |
| CN114879349B true CN114879349B (en) | 2023-05-05 |
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| TW202349053A (en) | 2023-12-16 |
| TWI814430B (en) | 2023-09-01 |
| CN114879349A (en) | 2022-08-09 |
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