CN103676095A - Five-piece imaging lens set - Google Patents

Abstract

The invention discloses a five-piece imaging lens group, comprising: a first lens with positive refractive power, wherein an object-side surface of the first lens is a convex surface, and at least one of the object-side surface and an image-side surface of the first lens is aspheric; a second lens with negative refractive power, wherein the surface of the image side of the second lens is a concave surface, and at least one of the object side surface and the surface of the image side of the second lens is an aspheric surface; a third lens with positive refractive power, at least one of the object-side surface and the image-side surface of the third lens being aspheric; a fourth lens with positive refractive power having a concave object-side surface and a convex image-side surface, wherein at least one of the object-side surface and the image-side surface of the fourth lens is aspheric; the fifth lens element with negative refractive power has a concave image-side surface, and at least one of the object-side surface and the image-side surface of the fifth lens element is aspheric, so that the fifth lens element is applicable to a high-pixel mobile phone camera, the total length of the lens is shortened, and the fifth lens element has a large picture angle, a large aperture, high pixels and high resolution.

Description

Five-piece imaging lens set

technical field

The invention relates to an optical lens, in particular to a five-piece imaging lens group.

Background technique

In recent years, with the rise of mobile phone cameras, the demand for miniaturized photographic lenses has increased day by day, and the photosensitive components of general photographic lenses are nothing more than photocoupled devices (CCD: Charge Coupled Device) or complementary metal oxide semiconductors (CMOS: Complementary Metal-Oxide Semiconductor) two, due to the advancement of semiconductor process technology, the pixel area of the photosensitive component is reduced, and the miniaturized photographic lens is gradually developing into the high-pixel field. Therefore, the requirements for image quality are also increasing.

Traditional miniaturized photographic lenses mounted on portable electronic products mostly use a four-piece lens structure. However, due to the rapid increase in the pixels of mobile phone cameras, the pixel area of the photosensitive component is gradually shrinking, and the system image quality is limited. In the case of ever-increasing requirements, ordinary four-piece lens groups will not be able to meet higher-level photographic lens modules, and due to the continuous development of electronic products towards thinner, lighter and higher performance.

Contents of the invention

The technical problem to be solved by the present invention is to provide a five-piece imaging lens group, which can be applied to high-pixel mobile phone cameras without making the total length of the lens too long, and at the same time has a large picture angle, a large aperture, high pixels, Five-element imaging lens group with high resolution and low lens height.

In order to solve the above-mentioned problems, the present invention provides a five-element imaging lens set, which includes in sequence from the object side to the image side: a first lens with positive refractive power, the object-side surface of which is convex, and the first lens At least one of the object-side surface and the image-side surface is an aspheric surface; a second lens with negative refractive power, the image-side surface of which is concave, and at least one of the object-side surface and the image-side surface of the second lens is aspherical; A third lens with positive refractive power, at least one of its object-side surface and image-side surface is aspheric; a fourth lens with positive refractive power, its object-side surface is concave, and the image-side surface is convex, and the fourth lens The object-side surface and the image-side surface of the lens are at least one aspheric surface; a fifth lens with negative refractive power, the image-side surface is concave, and at least one of the object-side surface and the image-side surface of the fifth lens is aspherical ; and a diaphragm, which can be arranged on the diaphragm in front of the object-side surface of the first lens (that is, between the object side and the first lens), or between the first lens and the second lens; The refractive index of the first lens is N1, the inverse dispersion rate of the first lens is V1, the refractive index of the second lens is N2, and the inverse dispersion rate of the second lens is V2, respectively satisfying the following relationship: N1<1.57 ; V1 > 40; N2 > 1.57; V2 < 40. When N1, V1, N2, and V2 respectively satisfy the aforementioned relational expressions, it is beneficial to correct the chromatic aberration of the five-piece imaging lens group. When the field angle is large, there will not be too much system aberration.

The five-piece imaging lens set further includes a diaphragm arranged between the first lens and the second lens.

The five-piece imaging lens set further includes a diaphragm arranged in front of the object-side surface of the first lens.

The focal length of the first lens is f1, and the focal length of the second lens is f2, both of which satisfy the following relationship: 0.3<|f1|/|f2|<0.9.

The focal length of the first lens is f1, the combined focal length of the second lens and the third lens is f23, and both satisfy the following relationship: 0.3<|f1|/|f23|<0.8.

The focal length of the second lens is f2, the composite focal length of the third lens and the fourth lens is f34, and both satisfy the following relationship: 0.7<|f2|/|f34|<2.7.

The focal length of the fourth lens is f4, and the focal length of the fifth lens is f5, both of which satisfy the following relationship: 0.7<|f4|/|f5|<1.7.

The combined focal length of the first lens and the second lens is f12, and the overall combined focal length of the five-piece imaging lens set is f, both of which satisfy the following relationship: 0.75<|f12|/f<1.25.

The combined focal length of the first lens, the second lens and the third lens is f123, the overall combined focal length of the five-piece imaging lens set is f, and the two satisfy the following relationship: 0.6<|f123|/f< 0.25.

In the five-piece imaging lens group, the image radius of the imaging surface is IH, and the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and both satisfy the following relationship: 0.55<|IH /TL|<0.95.

The overall composite focal length of the five-piece imaging lens group is f, and the distance on the optical axis from the object-side surface of the first lens to the imaging plane is TL, both of which satisfy the following relationship: 0.75<|f/TL|<1.5.

The five-piece imaging lens set described in the present invention is applied to a high-pixel mobile phone camera, shortens the total length of the lens, and simultaneously has a large picture angle, a large aperture, high pixels, and high resolution capabilities.

Description of drawings

FIG. 1A is an optical schematic diagram of a first embodiment of the present invention.

FIG. 1B is a diagram of a spherical surface, a distortion line diagram, and a field curvature diagram of the first embodiment of the present invention.

FIG. 1C is Table 1, which is the optical data of the first embodiment.

Fig. 1D is Table 2, which is the aspherical data of the first embodiment.

FIG. 2A is an optical schematic diagram of a second embodiment of the present invention.

FIG. 2B is a diagram of a spherical surface, a distortion line diagram, and a field curvature diagram of the second embodiment of the present invention.

FIG. 2C is Table 3, which is the optical data of the second embodiment.

FIG. 2D is Table 4, which is the aspherical data of the second embodiment.

FIG. 3A is an optical schematic diagram of a third embodiment of the present invention.

FIG. 3B is a spherical surface, a distortion line diagram, and a field curvature diagram of the third embodiment of the present invention.

FIG. 3C is Table 5, which is the optical data of the third embodiment.

FIG. 3D is Table 6, which is the aspherical data of the third embodiment.

FIG. 4A is an optical schematic diagram of a fourth embodiment of the present invention.

4B is a spherical surface, a distortion line diagram, and a field curvature diagram of the fourth embodiment of the present invention.

FIG. 4C is Table 7, which is the optical data of the fourth embodiment.

FIG. 4D is Table 8, which is the aspheric data of the fourth embodiment.

FIG. 5A is an optical schematic diagram of a fifth embodiment of the present invention.

FIG. 5B is a spherical surface, a distortion line diagram, and a field curvature diagram of the fifth embodiment of the present invention.

FIG. 5C is Table 9, which is the optical data of the fifth embodiment.

FIG. 5D is Table 10, which is the aspherical data of the fifth embodiment.

FIG. 6A is an optical schematic diagram of a sixth embodiment of the present invention.

FIG. 6B is a spherical surface, a distortion line diagram, and a field curvature diagram of the sixth embodiment of the present invention.

Fig. 6C is Table 11, which is the optical data of the sixth embodiment.

FIG. 6D is Table 12, which is the aspherical data of the sixth embodiment.

Fig. 7 is Table 13, which is the numerical data of the correlation relation of the present invention.

Explanation of reference signs

100, 200, 300, 400, 500, 600 are light bars

110, 210, 310, 410, 510, 610 are the first lenses

111, 211, 311, 411, 511, 611 are object side surfaces of the first lens

112, 212, 312, 412, 512, 612 are the image side surfaces of the first eyeglass

120, 220, 320, 420, 520, 620 are the second lens

121, 221, 321, 421, 521, 621 are object side surfaces of the second lens

122, 222, 322, 422, 522, 622 are the image side surfaces of the second eyeglass

130, 230, 330, 430, 530, 630 are the third lenses

131, 231, 331, 431, 531, 631 are object side surfaces of the third lens

132, 232, 332, 432, 532, 632 are the image side surfaces of the third eyeglass

140, 240, 340, 440, 540, 640 are the fourth lens

141, 241, 341, 441, 541, 641 are object side surfaces of the fourth lens

142, 242, 342, 442, 542, 642 are the image side surfaces of the fourth eyeglass

150, 250, 350, 450, 550, 650 are the fifth lens

151, 251, 351, 451, 551, 651 are object side surfaces of the fifth lens

152, 252, 352, 452, 552, 652 are the image side surfaces of the fifth lens

160, 260, 360, 460, 560, 660 are infrared filter (IR Filter)

170, 270, 370, 470, 570, 670 are imaging planes

180, 280, 380, 480, 580, 680 are optical axes

F is the overall composite focal length

Fno is the overall aperture value

2ω is the drawing angle

f1 is the focal length of the first lens

f2 is the focal length of the second lens

f4 is the focal length of the fourth lens

f5 is the focal length of the fifth lens

f12 is the composite focal length of the first lens and the second lens

f23 is the synthetic focal length of the second lens and the third lens

f34 is the synthetic focal length of the third lens and the fourth lens

f123 is the composite focal length of the first lens, the second lens and the third lens

TL is the distance from the object-side surface of the first lens to the imaging plane on the optical axis

IH is the image radius of the imaging surface

N1 is the refractive index of the first lens

V1 is the inverse dispersion ratio of the first lens

N2 is the refractive index of the second lens

V2 is the inverse dispersion ratio of the second lens

Detailed ways

first embodiment

A five-piece imaging lens set provided by the first embodiment of the present invention, please refer to Figures 1A and 1B, Figure 1A is a schematic configuration diagram of the five-piece imaging lens set according to the first embodiment of the present invention, and Figure 1B is a schematic diagram of the first embodiment of the present invention An embodiment of the aberration curve diagram, the first embodiment from the object side A to the image side B includes:

One light bar 100.

A first lens 110 with positive refractive power is made of plastic. The object side surface 111 of the first lens 110 is a convex surface, and the image side surface 112 is a convex surface. The surfaces 112 are all aspherical.

A second lens 120 with negative refractive power is made of plastic. The object side surface 121 of the second lens 120 is convex, and the image side surface 122 is concave. The surfaces 122 are all aspherical.

A third lens 130 with negative refractive power is made of plastic. The object side surface 131 of the third lens 130 is convex, and the image side surface 132 is concave. The surfaces 132 are all aspherical.

A fourth lens 140 with positive refractive power is made of plastic. The object side surface 141 of the fourth lens 140 is concave, and the image side surface 142 is convex. The surfaces 142 are all aspherical.

A fifth lens 150 with negative refractive power is made of plastic. The object side surface 151 of the fifth lens 150 is convex, and the image side surface 152 is concave. The object side surface 151 and the image side surface of the fifth lens 150 are 152 are all set as aspheric.

An infrared filter filter (IR-filter) 160, which is located between the image side surface 152 of the fifth lens 150 and an imaging surface 170, the material of the infrared filter filter 160 is glass and does not affect the The focal length of the five-element imaging lens set.

The equation of the above-mentioned aspheric curve is expressed as follows:

$\mathrm{<span\; class="notranslate">\; z</span>}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="2"\; label="ch"\; filenames="HDA00002078698100031.png,HDA00002078698100061.png"\; state="\{\{state\}\}">ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; [</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; c</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; h</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; ]</span>}^{\mathrm{<span\; class="notranslate">\; 0.5</span>}}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="4"\; label="Ah"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Ah</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 4</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="6"\; label="Bh"\; filenames="HDA00002078698100031.png,HDA00002078698100151.png"\; state="\{\{state\}\}">Bh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 6</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="8"\; label="Ch"\; filenames="HDA00002078698100151.png,HDA00002078698100191.png"\; state="\{\{state\}\}">Ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 8</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="10"\; label="Dh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Dh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 10</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Eh</span>}}^{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="14"\; label="Gh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Gh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 14</span>}}<span\; class="notranslate">\; +</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span>$

Among them, z is the position value at the position of height h along the optical axis 180, taking the surface vertex as a reference; k is the cone constant; c is the reciprocal of the radius of curvature; A, B, C, D, E, G, .. ... is the high-order aspheric coefficient.

In the first embodiment, the overall synthetic focal length of the five-piece imaging lens set is f, and its relationship is: f=3.65.

In the first embodiment, the overall aperture value (f-number) of the five-piece imaging lens set is Fno, and its relationship is: Fno=2.2.

In the first embodiment, the picture angle of the five-piece imaging lens set is 2ω, and its relationship is: 2ω=78°.

In the first embodiment, the focal length of the first lens 110 is f1, and the focal length of the second lens 120 is f2, and the relationship is: |f1|/|f2|=0.5230.

In the first embodiment, the focal length of the first lens 110 is f1, the combined focal length of the second lens 120 and the third lens 130 is f23, and the relationship is: |f1|/|f23|=0.5679.

In the first embodiment, the focal length of the second lens 120 is f2, and the composite focal length of the third lens 130 and the fourth lens 140 is f34, and the relationship is: |f2|/|f34|=2.2848.

In the first embodiment, the focal length of the fourth lens 140 is f4, the focal length of the fifth lens 150 is f5, and the relationship is: |f4|/|f5|=0.9692.

In the first embodiment, the combined focal length of the first lens 110 and the second lens 120 is f12, the overall combined focal length of the five-piece imaging lens set is f, and the relationship is: |f12|/f=1.0343.

In the first embodiment, the combined focal length of the first lens 110, the second lens 120 and the third lens 130 is f123, the overall combined focal length of the five-piece imaging lens set is f, and its relationship is: | f123 |/f=1.0609.

In the first embodiment, the image radius of the imaging surface 170 is IH, and the distance from the object-side surface 111 of the first lens 110 to the imaging surface 170 on the optical axis 180 is TL, and its relational expression is: |IH/TL|=0.8341 .

In the first embodiment, the overall synthetic focal length of the five-piece imaging lens group is f, the distance from the object-side surface 111 of the first lens 110 to the imaging surface 170 on the optical axis 180 is TL, and the relationship is: | f/TL|=1.2573.

In the first embodiment, the refractive index of the first lens 110 is N1, the inverse dispersion rate (also called Abbe number/Abbe number) of the first lens 110 is V1, the refractive index of the second lens 120 is N2, The inverse dispersion ratio of the second lens 120 is V2, and its relationship is: N1=1.544; V1=56.0; N2=1.634; V2=23.9.

The detailed structural data of the first embodiment is shown in Table 1 in Figure 1C, and its aspheric surface data is shown in Table 2 in Figure 1D, where the units of the radius of curvature, thickness and focal length are millimeters (mm), and the table Surfaces 2 and 3 contained in 1 and 2 are respectively object and image side surfaces 111 and 112 of the first lens 110, surfaces 4 and 5 are respectively object and image side surfaces 121 and 122 of the second lens 120, and surface 6 and 7 are object and image side surfaces 131 and 132 of the third lens 130 respectively, surfaces 8 and 9 are object and image side surfaces 141 and 142 of the fourth lens 140 respectively, and surfaces 10 and 11 are the fifth lens 140 respectively. The object and image side surfaces 151 , 152 of the lens 150 .

second embodiment

A five-piece imaging lens set provided by the second embodiment of the present invention, please refer to Figure 2A, 2B, the figure 2A is a schematic configuration diagram of the five-piece imaging lens set according to the second embodiment of the present invention, and Figure 2B is a schematic diagram of the present invention The aberration curve diagram of the second embodiment, the second embodiment includes from the object side A to the image side B:

A first lens 210 with positive refractive power is made of plastic. The object side surface 211 of the first lens 210 is convex, and the image side surface 212 is concave. The surfaces 212 are all aspherical.

One light bar 200.

A second lens 220 with negative refractive power is made of plastic. The object side surface 221 of the second lens 220 is convex, and the image side surface 222 is concave. The surfaces 222 are all aspherical.

A third lens 230 with negative refractive power is made of plastic. The object side surface 231 of the third lens 230 is convex, and the image side surface 232 is concave. The surfaces 232 are all aspherical.

A fourth lens 240 with positive refractive power is made of plastic. The object side surface 241 of the fourth lens 240 is concave, and the image side surface 242 is convex. The object side surface 241 of the fourth lens 240 is connected to the image side The surfaces 242 are all aspherical.

A fifth lens 250 with negative refractive power is made of plastic. The object side surface 251 of the fifth lens 250 is convex, and the image side surface 252 is concave. The object side surface 251 of the fifth lens 250 and the image side surface 252 are all set as aspheric.

An infrared filter filter 260 is located between the image side surface 252 of the fifth lens 250 and an imaging surface 270. The infrared filter filter 260 is made of glass and does not affect the five-piece imaging lens The focal length of the group.

The equation of the above-mentioned aspheric curve is expressed as follows:

$\mathrm{<span\; class="notranslate">\; z</span>}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="2"\; label="ch"\; filenames="HDA00002078698100031.png,HDA00002078698100061.png"\; state="\{\{state\}\}">ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; [</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; c</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; h</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; ]</span>}^{\mathrm{<span\; class="notranslate">\; 0.5</span>}}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="4"\; label="Ah"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Ah</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 4</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="6"\; label="Bh"\; filenames="HDA00002078698100031.png,HDA00002078698100151.png"\; state="\{\{state\}\}">Bh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 6</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="8"\; label="Ch"\; filenames="HDA00002078698100151.png,HDA00002078698100191.png"\; state="\{\{state\}\}">Ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 8</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="10"\; label="Dh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Dh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 10</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Eh</span>}}^{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="14"\; label="Gh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Gh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 14</span>}}<span\; class="notranslate">\; +</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span>$

Among them, z is the position value at the position of height h along the optical axis 280, taking the surface vertex as a reference; k is the cone constant; c is the reciprocal of the radius of curvature; A, B, C, D, E, G, .. ... is the high-order aspheric coefficient.

In the second embodiment, the overall composite focal length of the five-piece imaging lens set is f, and its relationship is: f=3.76.

In the second embodiment, the overall aperture value (f-number) of the five-piece imaging lens set is Fno, and its relationship is: Fno=2.2.

In the second embodiment, the picture angle of the five-piece imaging lens set is 2ω, and its relationship is: 2ω=78°.

In the second embodiment, the focal length of the first lens 210 is f1, and the focal length of the second lens 220 is f2, and the relationship is: |f1|/|f2|=0.4876.

In the second embodiment, the focal length of the first lens 210 is f1, the composite focal length of the second lens 220 and the third lens 230 is f23, and the relational expression is: |f1|/|f23|=0.5149.

In the second embodiment, the focal length of the second lens 220 is f2, and the composite focal length of the third lens 230 and the fourth lens 240 is f34, and the relationship is: |f2|/|f34|=2.3878.

In the second embodiment, the focal length of the fourth lens 240 is f4, the focal length of the fifth lens 250 is f5, and the relationship is: |f4|/|f5|=0.9240.

In the second embodiment, the combined focal length of the first lens 210 and the second lens 220 is f12, the overall combined focal length of the five-piece imaging lens set is f, and the relationship is: |f12|/f=0.9676.

In the second embodiment, the combined focal length of the first lens 210, the second lens 220, and the third lens 230 is f123, the overall combined focal length of the five-piece imaging lens set is f, and its relationship is: | f123 |/f=0.9808.

In the second embodiment, the image radius of the imaging surface 270 is IH, and the distance from the object-side surface 211 of the first lens 210 to the imaging surface 270 on the optical axis 280 is TL, and its relational expression is: |IH/TL|=0.8108 .

In the second embodiment, the overall synthetic focal length of the five-piece imaging lens group is f, and the distance from the object-side surface 211 of the first lens 210 to the imaging surface 270 on the optical axis 280 is TL, and its relationship is: | f/TL|=1.2373.

In the second embodiment, the refractive index of the first lens 210 is N1, the inverse dispersion rate of the first lens 210 is V1, the refractive index of the second lens 220 is N2, and the inverse dispersion rate of the second lens 220 is V2, its relational formula is: N1=1.544; V1=56; N2=1.632; V2=23.

The detailed structural data of the second embodiment is shown in Table 3 in Figure 2C, and its aspheric surface data is shown in Table 4 in Figure 2D, where the units of the radius of curvature, thickness and focal length are millimeters (mm), and the table Surfaces 1 and 2 contained in the third and fourth are respectively object and image side surfaces 211 and 212 of the first lens 210, surfaces 4 and 5 are respectively object and image side surfaces 221 and 222 of the second lens 220, and surfaces 6 and 7 are respectively the object and image side surfaces 231 and 232 of the third lens 230, surfaces 8 and 9 are respectively the object and image side surfaces 241 and 242 of the fourth lens 240, and surfaces 10 and 11 are respectively the fifth The object and image side surfaces 251, 252 of the lens 250.

third embodiment

A five-piece imaging lens set provided by the third embodiment of the present invention, please refer to Fig. 3A, 3B, the figure 3A is a schematic configuration diagram of the five-piece imaging lens set according to the third embodiment of the present invention, and Fig. 3B is a schematic diagram of the present invention The aberration curve diagram of the third embodiment, the third embodiment includes from the object side A to the image side B:

A first lens 310 with positive refractive power is made of plastic. The object side surface 311 of the first lens 310 is convex, and the image side surface 312 is convex. The object side surface 311 of the first lens 310 is connected to the image side The surfaces 312 are all aspherical.

One light bar 300.

A second lens 320 with negative refractive power is made of plastic. The object side surface 321 of the second lens 320 is concave, and the image side surface 322 is concave. The object side surface 321 of the second lens 320 and the image side The surfaces 322 are all aspherical.

A third lens 330 with positive refractive power is made of plastic. The object side surface 331 of the third lens 330 is concave, and the image side surface 332 is convex. The object side surface 331 of the third lens 330 and the image side The surfaces 332 are all aspherical.

A fourth lens 340 with positive refractive power is made of plastic. The object side surface 341 of the fourth lens 340 is concave, and the image side surface 342 is convex. The object side surface 341 of the fourth lens 340 is connected to the image side The surfaces 342 are all aspherical.

A fifth lens 350 with negative refractive power is made of plastic. The object side surface 351 of the fifth lens 350 is convex, and the image side surface 352 is concave. The object side surface 351 and the image side surface of the fifth lens 350 are 352 are all set as aspheric.

An infrared filter filter 360 is located between the image side surface 352 of the fifth lens 350 and an imaging surface 370. The material of the infrared filter filter 360 is glass and does not affect the five-piece imaging lens The focal length of the group.

The equation of the above-mentioned aspheric curve is expressed as follows:

$\mathrm{<span\; class="notranslate">\; z</span>}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="2"\; label="ch"\; filenames="HDA00002078698100031.png,HDA00002078698100061.png"\; state="\{\{state\}\}">ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; [</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; c</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; h</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; ]</span>}^{\mathrm{<span\; class="notranslate">\; 0.5</span>}}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="4"\; label="Ah"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Ah</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 4</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="6"\; label="Bh"\; filenames="HDA00002078698100031.png,HDA00002078698100151.png"\; state="\{\{state\}\}">Bh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 6</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="8"\; label="Ch"\; filenames="HDA00002078698100151.png,HDA00002078698100191.png"\; state="\{\{state\}\}">Ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 8</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="10"\; label="Dh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Dh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 10</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Eh</span>}}^{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="14"\; label="Gh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Gh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 14</span>}}<span\; class="notranslate">\; +</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span>$

Among them, z is the position value at the position of height h along the optical axis 380, taking the surface vertex as a reference; k is the cone constant; c is the reciprocal of the radius of curvature; A, B, C, D, E, G, .. ... is the high-order aspheric coefficient.

In the third embodiment, the overall composite focal length of the five-piece imaging lens set is f, and its relationship is: f=3.67.

In the third embodiment, the overall aperture value (f-number) of the five-piece imaging lens set is Fno, and its relationship is: Fno=2.2.

In the third embodiment, the picture angle of the five-piece imaging lens set is 2ω, and its relationship is: 2ω=78°.

In the third embodiment, the focal length of the first lens 310 is f1, the focal length of the second lens 320 is f2, and the relationship is: |f1|/|f2|=0.5951.

In the third embodiment, the focal length of the first lens 310 is f1, the combined focal length of the second lens 320 and the third lens 330 is f23, and the relational expression is: |f1|/|f23|=0.5628.

In the third embodiment, the focal length of the second lens 320 is f2, and the composite focal length of the third lens 330 and the fourth lens 340 is f34, and the relationship is: |f2|/|f34|=1.4379.

In the third embodiment, the focal length of the fourth lens 340 is f4, the focal length of the fifth lens 350 is f5, and the relationship is: |f4|/|f5|=0.9599.

In the third embodiment, the combined focal length of the first lens 310 and the second lens 320 is f12, the overall combined focal length of the five-piece imaging lens set is f, and the relationship is: |f12|/f=0.9758.

In the third embodiment, the combined focal length of the first lens 310, the second lens 320 and the third lens 330 is f123, the overall combined focal length of the five-piece imaging lens set is f, and its relationship is: | f123 |/f=0.9480.

In the third embodiment, the image radius of the imaging surface 370 is IH, and the distance from the object-side surface 311 of the first lens 310 to the imaging surface 370 on the optical axis 380 is TL, and its relational expression is: |IH/TL|=0.8307 .

In the third embodiment, the overall synthetic focal length of the five-piece imaging lens group is f, the distance from the object-side surface 311 of the first lens 310 to the imaging surface 370 on the optical axis 380 is TL, and the relationship is: | f/TL|=1.2611.

In the third embodiment, the refractive index of the first lens 310 is N1, the inverse dispersion rate of the first lens 310 is V1, the refractive index of the second lens 320 is N2, and the inverse dispersion rate of the second lens 320 is V2, its relational formula is: N1=1.535; V1=56; N2=1.632; V2=23.

The detailed structural data of the third embodiment is shown in Table 5 in Figure 3C, and its aspheric surface data is shown in Table 6 in Figure 3D, wherein the units of the radius of curvature, thickness and focal length are millimeters (mm), and Table 5 6. Surfaces 1 and 2 are respectively the object and image side surfaces 311 and 312 of the first lens 310, surfaces 4 and 5 are respectively the object and image side surfaces 321 and 322 of the second lens 320, and surface 6 , 7 are object and image side surfaces 331, 332 of the third lens 330 respectively, surfaces 8 and 9 are object and image side surfaces 341 and 342 of the fourth lens 340 respectively, and surfaces 10 and 11 are respectively the fifth lens Object of 350, image side surfaces 351,352.

Fourth embodiment

A five-piece imaging lens set provided by the fourth embodiment of the present invention, please refer to Fig. 4A, 4B, the figure 4A is a schematic configuration diagram of the five-piece imaging lens set according to the fourth embodiment of the present invention, and Fig. 4B is a schematic diagram of the present invention The aberration curve diagram of the fourth embodiment, the fourth embodiment includes from the object side A to the image side B:

A first lens 410 with positive refractive power is made of plastic. The object side surface 411 of the first lens 410 is convex, and the image side surface 412 is convex. The object side surface 411 of the first lens 410 is connected to the image side The surfaces 412 are all aspherical.

One light bar 400.

A second lens 420 with negative refractive power is made of plastic. The object side surface 421 of the second lens 420 is concave, and the image side surface 422 is concave. The surfaces 422 are all aspherical.

A third lens 430 with positive refractive power is made of plastic. The object side surface 431 of the third lens 430 is concave, and the image side surface 432 is convex. The object side surface 431 of the third lens 430 is connected to the image side The surfaces 432 are all aspherical.

A fourth lens 440 with positive refractive power is made of plastic. The object side surface 441 of the fourth lens 440 is concave, and the image side surface 442 is convex. The object side surface 441 of the fourth lens 440 is connected to the image side The surfaces 442 are all aspherical.

A fifth lens 450 with negative refractive power is made of plastic. The object side surface 451 of the fifth lens 450 is convex, and the image side surface 452 is concave. The object side surface 451 of the fifth lens 450 and the image side surface 452 are all set as aspheric.

An infrared filter filter 460 is located between the image side surface 452 of the fifth lens 450 and an imaging surface 470. The infrared filter filter 460 is made of glass and does not affect the five-piece imaging lens The focal length of the group.

The equation of the above-mentioned aspheric curve is expressed as follows:

$\mathrm{<span\; class="notranslate">\; z</span>}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="2"\; label="ch"\; filenames="HDA00002078698100031.png,HDA00002078698100061.png"\; state="\{\{state\}\}">ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; [</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; c</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; h</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; ]</span>}^{\mathrm{<span\; class="notranslate">\; 0.5</span>}}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="4"\; label="Ah"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Ah</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 4</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="6"\; label="Bh"\; filenames="HDA00002078698100031.png,HDA00002078698100151.png"\; state="\{\{state\}\}">Bh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 6</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="8"\; label="Ch"\; filenames="HDA00002078698100151.png,HDA00002078698100191.png"\; state="\{\{state\}\}">Ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 8</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="10"\; label="Dh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Dh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 10</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Eh</span>}}^{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="14"\; label="Gh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Gh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 14</span>}}<span\; class="notranslate">\; +</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span>$

Among them, z is the position value at the position of height h along the optical axis 480, taking the surface vertex as a reference; k is the cone constant; c is the reciprocal of the radius of curvature; A, B, C, D, E, G, .. ... is the high-order aspheric coefficient.

In the fourth embodiment, the overall composite focal length of the five-piece imaging lens set is f, and its relationship is: f=4.13.

In the fourth embodiment, the overall aperture value (f-number) of the five-piece imaging lens set is Fno, and its relationship is: Fno=2.2.

In the fourth embodiment, the picture angle of the five-piece imaging lens set is 2ω, and its relationship is: 2ω=72°.

In the fourth embodiment, the focal length of the first lens 410 is f1, the focal length of the second lens 420 is f2, and the relationship is: |f1|/|f2|=0.6969.

In the fourth embodiment, the focal length of the first lens 410 is f1, and the composite focal length of the second lens 420 and the third lens 430 is f23, and the relationship is: |f1|/|f23|=0.5256.

In the fourth embodiment, the focal length of the second lens 420 is f2, and the composite focal length of the third lens 430 and the fourth lens 440 is f34, and the relationship is: |f2|/|f34|=1.0029.

In the fourth embodiment, the focal length of the fourth lens 440 is f4, and the focal length of the fifth lens 450 is f5, and the relationship is: |f4|/|f5|=1.0272.

In the fourth embodiment, the combined focal length of the first lens 410 and the second lens 420 is f12, the overall combined focal length of the five-piece imaging lens set is f, and the relationship is: |f12|/f=0.9423.

In the fourth embodiment, the combined focal length of the first lens 410, the second lens 420, and the third lens 430 is f123, the overall combined focal length of the five-piece imaging lens set is f, and its relationship is: | f123 |/f=0.9006.

In the fourth embodiment, the image radius of the imaging surface 470 is IH, and the distance from the object-side surface 411 of the first lens 410 to the imaging surface 470 on the optical axis 480 is TL, and its relational expression is: |IH/TL|=0.7374 .

In the fourth embodiment, the overall synthetic focal length of the five-piece imaging lens group is f, the distance from the object-side surface 411 of the first lens 410 to the imaging surface 470 on the optical axis 480 is TL, and the relationship is: | f/TL|=1.1918.

In the fourth embodiment, the refractive index of the first lens 410 is N1, the inverse dispersion rate of the first lens 410 is V1, the refractive index of the second lens 420 is N2, and the inverse dispersion rate of the second lens 420 is V2, its relational formula is: N1=1.535; V1=56; N2=1.632; V2=23.

The detailed structural data of the fourth embodiment is shown in Table 7 in Figure 4C, and its aspheric surface data is shown in Table 8 in Figure 4D, wherein the units of the radius of curvature, thickness and focal length are millimeters (mm), and Table 7 The surfaces 1 and 2 contained in the eighth are respectively object and image side surfaces 411 and 412 of the first lens 410, surfaces 4 and 5 are respectively object and image side surfaces 421 and 422 of the second lens 420, and surface 6 , 7 are object and image side surfaces 431, 432 of the third lens 430 respectively, surfaces 8 and 9 are object and image side surfaces 441 and 442 of the fourth lens 440 respectively, and surfaces 10 and 11 are respectively the fifth lens 450 object, image side surfaces 451,452.

fifth embodiment

A five-piece imaging lens set provided by the fifth embodiment of the present invention, please refer to Figures 5A and 5B, the figure 5A is a schematic configuration diagram of the five-piece imaging lens set according to the fifth embodiment of the present invention, and Figure 5B is a schematic diagram of the present invention The aberration curve diagram of the fifth embodiment, the fifth embodiment includes from the object side A to the image side B:

A first lens 510 with positive refractive power is made of plastic. The object side surface 511 of the first lens 510 is a convex surface, and the image side surface 512 is a convex surface. The surfaces 512 are all aspherical.

One light bar 500.

A second lens 520 with negative refractive power is made of plastic. The object side surface 521 of the second lens 520 is concave, and the image side surface 522 is concave. The surfaces 522 are all aspherical.

A third lens 530 with positive refractive power is made of plastic. The object side surface 531 of the third lens 530 is a convex surface, and the image side surface 532 is a convex surface. The surfaces 532 are all aspherical.

A fourth lens 540 with positive refractive power is made of plastic. The object side surface 541 of the fourth lens 540 is concave, and the image side surface 542 is convex. The object side surface 541 of the fourth lens 540 is connected to the image side The surfaces 542 are all aspherical.

A fifth lens 550 with negative refractive power is made of plastic. The object side surface 551 of the fifth lens 550 is convex, and the image side surface 552 is concave. The object side surface 551 and the image side surface of the fifth lens 550 are 552 are all set as aspheric.

An infrared filter 560 is located between the image side surface 552 of the fifth lens 550 and an imaging surface 570. The material of the infrared filter 560 is glass and does not affect the five-piece imaging lens The focal length of the group.

The equation of the above-mentioned aspheric curve is expressed as follows:

$\mathrm{<span\; class="notranslate">\; z</span>}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="2"\; label="ch"\; filenames="HDA00002078698100031.png,HDA00002078698100061.png"\; state="\{\{state\}\}">ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; [</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; c</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; h</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; ]</span>}^{\mathrm{<span\; class="notranslate">\; 0.5</span>}}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="4"\; label="Ah"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Ah</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 4</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="6"\; label="Bh"\; filenames="HDA00002078698100031.png,HDA00002078698100151.png"\; state="\{\{state\}\}">Bh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 6</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="8"\; label="Ch"\; filenames="HDA00002078698100151.png,HDA00002078698100191.png"\; state="\{\{state\}\}">Ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 8</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="10"\; label="Dh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Dh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 10</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Eh</span>}}^{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="14"\; label="Gh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Gh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 14</span>}}<span\; class="notranslate">\; +</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span>$

Among them, z is the position value at the position of height h along the optical axis 580, taking the surface vertex as a reference; k is the cone constant; c is the reciprocal of the radius of curvature; A, B, C, D, E, G, .. ... is the high-order aspheric coefficient.

In the fifth embodiment, the overall synthetic focal length of the five-piece imaging lens set is f, and its relationship is: f=4.10.

In the fifth embodiment, the overall aperture value (f-number) of the five-piece imaging lens set is Fno, and its relationship is: Fno=2.2.

In the fifth embodiment, the picture angle of the five-piece imaging lens set is 2ω, and its relationship is: 2ω=71.5°.

In the fifth embodiment, the focal length of the first lens 510 is f1, the focal length of the second lens 520 is f2, and the relationship is: |f1|/|f2|=0.52295.

In the fifth embodiment, the focal length of the first lens 510 is f1, the composite focal length of the second lens 520 and the third lens 530 is f23, and the relationship is: |f1|/|f23|=0.58686.

In the fifth embodiment, the focal length of the second lens 520 is f2, and the composite focal length of the third lens 530 and the fourth lens 540 is f34, and the relationship is: |f2|/|f34|=1.27233.

In the fifth embodiment, the focal length of the fourth lens 540 is f4, and the focal length of the fifth lens 550 is f5, and the relationship is: |f4|/|f5|=1.54187.

In the fifth embodiment, the combined focal length of the first lens 510 and the second lens 520 is f12, the overall combined focal length of the five-piece imaging lens set is f, and the relationship is: |f12|/f=1.026441.

In the fifth embodiment, the combined focal length of the first lens 510, the second lens 520, and the third lens 530 is f123, the overall combined focal length of the five-piece imaging lens set is f, and its relationship is: | f123 |/f=0.824081.

In the fifth embodiment, the image radius of the imaging surface 570 is IH, and the distance from the object-side surface 511 of the first lens 510 to the imaging surface 570 on the optical axis 580 is TL, and its relational expression is: |IH/TL|=0.732 .

In the fifth embodiment, the overall synthetic focal length of the five-piece imaging lens group is f, the distance from the object-side surface 511 of the first lens 510 to the imaging surface 570 on the optical axis 580 is TL, and the relationship is: | f/TL|=1.125267.

In the fifth embodiment, the refractive index of the first lens 510 is N1, the inverse dispersion rate of the first lens 510 is V1, the refractive index of the second lens 520 is N2, and the inverse dispersion rate of the second lens 520 is V2, its relational formula is: N1=1.544; V1=56; N2=1.632; V2=23.

The detailed structural data of the fifth embodiment is shown in Table 9 in Figure 5C, and its aspheric surface data is shown in Table 10 in Figure 5D, wherein the units of the radius of curvature, thickness and focal length are millimeters (mm), and Table 9 The surfaces 1 and 2 in 10 are respectively the object and image side surfaces 511 and 512 of the first lens 510, the surfaces 4 and 5 are respectively the object and image side surfaces 521 and 522 of the second lens 520, and surface 6 , 7 are object and image side surfaces 531, 532 of the third lens 530 respectively, surfaces 8 and 9 are object and image side surfaces 541 and 542 of the fourth lens 540 respectively, and surfaces 10 and 11 are respectively the fifth lens 550 object, image side surfaces 551,552.

Sixth embodiment

A five-piece imaging lens set provided by the sixth embodiment of the present invention, please refer to Figures 6A and 6B. Figure 6A is a schematic configuration diagram of the five-piece imaging lens set according to the sixth embodiment of the present invention, and Figure 6B is a schematic diagram of the present invention The aberration graph of the sixth embodiment, the sixth embodiment includes from the object side A to the image side B:

One light bar 600.

A first lens 610 with positive refractive power is made of plastic. The object side surface 611 of the first lens 610 is convex, and the image side surface 612 is convex. The object side surface 611 of the first lens 610 is connected to the image side The surfaces 612 are all aspherical.

A second lens 620 with negative refractive power is made of plastic. The object side surface 621 of the second lens 620 is concave, and the image side surface 622 is concave. The object side surface 621 of the second lens 620 is connected to the image side The surfaces 622 are all aspherical.

A third lens 630 with negative refractive power is made of plastic. The object side surface 631 of the third lens 630 is concave, and the image side surface 632 is convex. The object side surface 631 of the third lens 630 and the image side The surfaces 632 are all aspherical.

A fourth lens 640 with positive refractive power is made of plastic. The object side surface 641 of the fourth lens 640 is concave, and the image side surface 642 is convex. The object side surface 641 of the fourth lens 640 is connected to the image side The surfaces 642 are all aspherical.

A fifth lens 650 with negative refractive power is made of plastic. The object side surface 651 of the fifth lens 650 is concave, and the image side surface 652 is concave. The object side surface 651 of the fifth lens 650 and the image side surface 652 are all set as aspheric.

An infrared filter filter 660 is located between the image side surface 652 of the fifth lens 650 and an imaging surface 670. The material of the infrared filter filter 660 is glass and does not affect the five-piece imaging lens The focal length of the group.

The equation of the above-mentioned aspheric curve is expressed as follows:

$\mathrm{<span\; class="notranslate">\; z</span>}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="2"\; label="ch"\; filenames="HDA00002078698100031.png,HDA00002078698100061.png"\; state="\{\{state\}\}">ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; [</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; c</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; h</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; ]</span>}^{\mathrm{<span\; class="notranslate">\; 0.5</span>}}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="4"\; label="Ah"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Ah</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 4</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="6"\; label="Bh"\; filenames="HDA00002078698100031.png,HDA00002078698100151.png"\; state="\{\{state\}\}">Bh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 6</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="8"\; label="Ch"\; filenames="HDA00002078698100151.png,HDA00002078698100191.png"\; state="\{\{state\}\}">Ch</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 8</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="10"\; label="Dh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Dh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 10</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Eh</span>}}^{\mathrm{<span\; class="notranslate">\; 12</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="14"\; label="Gh"\; filenames="HDA00002078698100031.png,HDA00002078698100071.png"\; state="\{\{state\}\}">Gh</figure-callout></span>}}^{\mathrm{<span\; class="notranslate">\; 14</span>}}<span\; class="notranslate">\; +</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span><span\; class="notranslate">\; .</span>$

Among them, z is the position value at the position of height h along the optical axis 680, taking the surface vertex as a reference; k is the cone constant; c is the reciprocal of the radius of curvature; A, B, C, D, E, G, .. ... is the high-order aspheric coefficient.

In the sixth embodiment, the overall composite focal length of the five-piece imaging lens set is f, and its relationship is: f=3.29.

In the sixth embodiment, the overall aperture value (f-number) of the five-piece imaging lens set is Fno, and its relationship is: Fno=2.4.

In the sixth embodiment, the angle of view of the five-piece imaging lens set is 2ω, and its relationship is: 2ω=72°.

In the sixth embodiment, the focal length of the first lens 610 is f1, the focal length of the second lens 120 is f2, and the relationship is: |f1|/|f2|=0.4409.

In the sixth embodiment, the focal length of the first lens 610 is f1, and the combined focal length of the second lens 620 and the third lens 630 is f23, and the relationship is: |f1|/|f23|=0.59426.

In the sixth embodiment, the focal length of the second lens 620 is f2, the combined focal length of the third lens 630 and the fourth lens 640 is f34, and the relationship is: |f2|/|f34|=2.38843.

In the sixth embodiment, the focal length of the fourth lens 640 is f4, and the focal length of the fifth lens 650 is f5, and the relationship is: |f4|/|f5|=1.12698.

In the sixth embodiment, the combined focal length of the first lens 610 and the second lens 620 is f12, the overall combined focal length of the five-piece imaging lens set is f, and the relationship is: |f12|/f=0.981891.

In the sixth embodiment, the combined focal length of the first lens 610, the second lens 620, and the third lens 630 is f123, the overall combined focal length of the five-piece imaging lens set is f, and its relationship is: | f123 |/f=1.174148.

In the sixth embodiment, the image radius of the imaging surface 670 is IH, the distance from the object-side surface 611 of the first lens 610 to the imaging surface 670 on the optical axis 680 is TL, and the relational formula is: |IH/TL|=0.6283 .

In the sixth embodiment, the overall synthetic focal length of the five-piece imaging lens group is f, the distance from the object-side surface 611 of the first lens 610 to the imaging surface 670 on the optical axis 680 is TL, and the relationship is: | f/TL|=0.844369.

In the sixth embodiment, the refractive index of the first lens 610 is N1, the inverse dispersion rate of the first lens 610 is V1, the refractive index of the second lens 620 is N2, and the inverse dispersion rate of the second lens 620 is V2, its relational formula is: N1=1.544; V1=56; N2=1.634; V2=23.9.

The detailed structural data of the sixth embodiment is shown in Table 11 in Figure 6C, and its aspheric surface data is shown in Table 12 in Figure 6D, where the units of the radius of curvature, thickness and focal length are millimeters (mm), and Surfaces 2 and 3 listed in Tables 11 and 12 are respectively the object and image side surfaces 611 and 612 of the first lens 610, and surfaces 4 and 5 are respectively the object and image side surfaces 621 and 612 of the second lens 620. 622, surfaces 6 and 7 are object and image side surfaces 631 and 632 of the third lens 630 respectively, surfaces 8 and 9 are object and image side surfaces 641 and 642 of the fourth lens 640 respectively, and surfaces 10 and 11 are respectively The object and image side surfaces 651 , 652 of the fifth lens 650 .

It is worth noting that Table 1 in Figure 1C, Table 2 in Figure 1D, Table 3 in Figure 2C, Table 4 in Figure 2D, Table 5 in Figure 3C, Table 6 in Figure 3D, and Table 4C Table 7, Table 8 in Figure 4D, Table 9 in Figure 5C, Table 10 in Figure 5D, Table 11 in Figure 6C, and Table 12 in Figure 6D are five-piece imaging lens groups of the present invention The table of different numerical changes of each embodiment, however, the numerical changes of each embodiment of the present invention are all experimental results, even if different numerical values are used, products with the same structure still belong to the protection category of the present invention. Table 13 in FIG. 7 is a table corresponding to each relational expression in each embodiment.

In the five-piece imaging lens set of the present invention, the material of each lens can be glass or plastic. If the material of each lens is glass, the degree of freedom in the configuration of the refractive power of the five-piece imaging lens set can be increased. If the material of each lens is Plastics can effectively reduce production costs.

In the five-piece imaging lens set of the present invention, if the lens surface is convex, it means that the lens surface is convex at the near optical axis; if the lens surface is concave, it means that the lens surface is concave at the near optical axis.

Claims (11)

1. five chip imaging lens set, is characterized in that: by thing side to sequentially comprising as side:

The first eyeglass of the positive refracting power of one tool, its thing side surface is convex surface, and the thing side surface of this first eyeglass is at least simultaneously aspheric surface with picture side surface;

The second eyeglass of the negative refracting power of one tool, it is concave surface as side surface, and the thing side surface of this second eyeglass is at least simultaneously aspheric surface with picture side surface;

The 3rd eyeglass of the positive refracting power of one tool, its thing side surface is at least simultaneously aspheric surface with picture side surface;

The 4th eyeglass of the positive refracting power of one tool, its thing side surface is concave surface, as side surface, is convex surface, and the thing side surface of the 4th eyeglass is at least simultaneously aspheric surface with picture side surface;

The 5th eyeglass of the negative refracting power of one tool, it is concave surface as side surface, and the thing side surface of the 5th eyeglass is at least simultaneously aspheric surface with picture side surface.

The refractive index of wherein said the first eyeglass is that the contrary dispersion rate of N1, this first eyeglass is that the refractive index of V1, this second eyeglass is that the contrary dispersion rate of N2, this second eyeglass is V2, meets respectively following relationship: N1 < 1.57; V1 > 40; N2 > 1.57; V2 < 40.

2. five chip imaging lens set as claimed in claim 1, is characterized in that: more comprise a light hurdle being arranged between this first eyeglass and this second eyeglass.

3. five chip imaging lens set as claimed in claim 1, is characterized in that: more comprise one and be arranged at this first eyeglass thing side surface light hurdle before.

4. five chip imaging lens set as claimed in claim 1, it is characterized in that: the focal length of described the first eyeglass is f1, the focal length of this second eyeglass is f2, and both meet following relationship: 0.3 < | f1|/| f2| < 0.9.

5. five chip imaging lens set as claimed in claim 1, it is characterized in that: the focal length of described the first eyeglass is f1, the synthetic focal length of this second eyeglass and the 3rd eyeglass is f23, and both meet following relationship: 0.3 < | f1|/| f23| < 0.8.

6. five chip imaging lens set as claimed in claim 1, it is characterized in that: the focal length of described the second eyeglass is f2, the synthetic focal length of the 3rd eyeglass and the 4th eyeglass is f34, and both meet following relationship: 0.7 < | f2|/| f34| < 2.7.

7. five chip imaging lens set as claimed in claim 1, it is characterized in that: the focal length of described the 4th eyeglass is f4, the focal length of the 5th eyeglass is f5, and both meet following relationship: 0.7 < | f4|/| f5| < 1.7.

8. five chip imaging lens set as claimed in claim 1, it is characterized in that: the synthetic focal length of described the first eyeglass, this second eyeglass is f12, the synthetic focal length of integral body of this five chips imaging lens set is f, and both meet following relationship: 0.75 < | f12|/f < 1.25.

9. five chip imaging lens set as claimed in claim 1, it is characterized in that: the synthetic focal length of described the first eyeglass, this second eyeglass and the 3rd eyeglass is f123, the synthetic focal length of integral body of this five chips imaging lens set is f, and both meet following relationship: 0.6 < | f123|/f < 0.25.

10. five chip imaging lens set as claimed in claim 1, it is characterized in that: imaging surface image radius is IH, to imaging surface, the distance on optical axis is TL to the thing side surface of this first eyeglass, and both meet following relationship: 0.55 < | IH/TL| < 0.95.

11. five chip imaging lens set as claimed in claim 1, it is characterized in that: the synthetic focal length of integral body of described five chip imaging lens set is f, to imaging surface, the distance on optical axis is TL to the thing side surface of this first eyeglass, and both meet following relationship: 0.75 < | f/TL| < 1.5.

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