Additional teleconverter lens of mobile phone

Abstract

An additional teleconverter lens of a mobile phone comprises seven lenses. The first lens R1 is equal to 28.5 to 29.5, and the second lens R2 is equal to 95.5 to 96.5; the second lens R1 is equal to infinity, and R2 is equal to 42-43; the R1 of the third lens ranges from 19.5 to 20.5, and the R2 of the third lens ranges from 109.5 to 110.5; a fourth lens R1 is equal to 109.5 to 110.5, and R2 is equal to 15 to 16; a fifth lens R1 is equal to 15 to 16, and R2 is equal to 199.5 to 200.5; the sixth lens R1 is equal to 31.5 to 32.5, and the sixth lens R2 is equal to 10 to 11; and the seventh lens R1 is equal to 17 to 18, and R2 is equal to 64 to 65. The additional teleconverter lens of the mobile phone is high in definition when the mobile phone is matched with an external lens to shoot remote portraits.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lens, especially a kind of mobile phone additional telephoto lens. BACKGROUND

[0002] Users will usually install an external lens at mobile phone lens, to obtain better shooting effect. The existing external lens, when shooting distant portrait, the definition is not high. How to optimize the light path structure of lens, when using mobile phone to cooperate external lens to shoot distant portrait, improve definition, this is the technical problem to be solved. INVENTION CONTENTS

[0003] The utility model aims at overcoming the insufficient in prior art, provide a kind of mobile phone additional telephoto lens, when using mobile phone to cooperate external lens to shoot distant portrait, definition is high.

[0004] The utility model aims at overcoming the insufficient in prior art, provide a kind of mobile phone additional telephoto lens, when using mobile phone to cooperate external lens to shoot distant portrait, definition is high.

[0005] A kind of mobile phone additional telephoto lens, from object side to imaging surface sequentially includes: first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens;Third lens, fourth lens, fifth lens are glued to constitute the combined lens with negative optical power;

[0006] The optical center of each lens is located on the same straight line, the mirror surface curvature radius of each lens towards object side is represented by R1, the mirror surface curvature radius of each lens towards imaging surface is represented by R2;

[0007] R1=28.5-29.5mm, R2=95.5-96.5mm of first lens;R1=∞, R2=42-43mm of second lens;R1=19.5-20.5mm, R2=109.5-110.5mm of third lens;R1=109.5-110.5mm, R2=15-16mm of fourth lens;R1=15-16mm, R2=199.5-200.5mm of fifth lens;R1=31.5-32.5mm, R2=10-11mm of sixth lens;R1=17-18mm, R2=64-65mm of seventh lens;

[0008] The air gap of first lens and second lens is 1.9-2.3mm;The air gap of second lens and third lens is 0.1-0.3mm;The air gap of third lens and fourth lens is 0;The air gap of fourth lens and fifth lens is 0;The air gap of fifth lens and sixth lens is 0.1-0.3mm;The air gap of sixth lens and seventh lens is 2.1-2.6mm.

[0009] In one of the embodiments,

[0010] N value of the first lens is 1.63854, V d value is 55.45; d

[0011] N value of the second lens is 1.84666, V d value is 23.78; d

[0012] N value of the third lens is 1.60342, V d value is 38.01; d

[0013] N value of the fourth lens is 1.91082, V d value is 35.25; d

[0014] N value of the fifth lens is 1.72825, V d value is 28.32; d

[0015] N value of the sixth lens is 1.91082, V d value is 35.25; d

[0016] N value of the seventh lens is 1.62005, V d value is 36.35. d

[0017] In one of the embodiments,

[0018] The central thickness of the first lens is 9.5-10.5mm;

[0019] The central thickness of the second lens is 1.1-1.6mm;

[0020] The central thickness of the third lens is 10.5-11.5mm;

[0021] The central thickness of the fourth lens is 0.8-1.3mm;

[0022] The central thickness of the fifth lens is 5.5-6.5mm;

[0023] The central thickness of the sixth lens is 0.8-1.3mm;

[0024] The central thickness of the seventh lens is 2.2-2.8mm.

[0025] In one of the embodiments,

[0026] The diameter of the first lens is 40-47mm; ​​​​​​​

[0027] The diameter of the second lens is 35-47mm;

[0028] The diameter of the third lens is 29-34mm;

[0029] The diameter of the fourth lens is 28-34mm;

[0030] The diameter of the fifth lens is 18-24mm;

[0031] The diameter of the sixth lens is 16-26mm;

[0032] The diameter of the seventh lens is 10-18mm.

[0033] This utility model provides a mobile phone attachment teleconverter lens that delivers high clarity when using a mobile phone in conjunction with an external lens to take distant portrait photos. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic cross-sectional view of a mobile phone teleconverter lens according to an embodiment of the present invention.

[0036] Figure 2 for Figure 1 The optical path diagram of the mobile phone's attached teleconverter lens is shown below;

[0037] Figure 3 for Figure 1 The field curvature and distortion diagrams of the mobile phone's attached teleconverter lens are shown.

[0038] Figure 4 for Figure 1 The diagram shows a dot matrix of a mobile phone with an attached teleconverter lens.

[0039] Figure 5 for Figure 1 The diffraction MTF diagram of the mobile phone with attached teleconverter lens is shown.

[0040] Detailed Implementation

[0041] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present application to those skilled in the art.

[0042] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right" and similar terms are used for explanation only and are not intended to limit the present application to only such relative positions.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0044] Please refer to Figure 1 and Figure 2 The present application discloses a kind of mobile phone additional distance-increasing lens 10, from object side to imaging surface successively include: first lens G1, second lens G2, third lens G3, fourth lens G4, fifth lens G5, sixth lens G6, seventh lens G7, eighth lens G8.Wherein, third lens G3, fourth lens G4, fifth lens G5 glue constitutes the combination lens with negative optical power.

[0045] The optical center of each lens is located on the same line, the mirror surface curvature radius of each lens towards object side is represented by R1, the mirror surface curvature radius of each lens towards imaging surface is represented by R2;

[0046] Table one

[0047] Nd Vd R1 (mm) R2 (mm) Center thickness (mm) Diameter (mm) First lens G1 1.63854 55.45 28.5-29.5 95.5-96.5 9.5-10.5 40-47 Second lens G2 1.84666 23.78 ∞ 42-43 1.1-1.6 35-47 Third lens G3 1.60342 38.01 19.5-20.5 109.5-110.5 10.5-11.5 29-34 Fourth lens G4 1.91082 35.25 109.5-110.5 15-16 0.8-1.3 28-34 Fifth lens G5 1.72825 28.32 15-16 199.5-200.5 5.5-6.5 18-24 Sixth lens G6 1.91082 35.25 31.5-32.5 10-11 0.8-1.3 16-26 Seventh lens G7 1.62005 36.35 17-18 64-65 2.2-2.8 10-18

[0048] As shown in Table 1 above, R1 of the first lens is 28.5-29.5 mm, R2 is 95.5-96.5 mm; R1 of the second lens is ∞, R2 is 42-43 mm; R1 of the third lens is 19.5-20.5 mm, R2 is 109.5-110.5 mm; R1 of the fourth lens is 109.5-110.5 mm, R2 is 15-16 mm; R1 of the fifth lens is 15-16 mm, R2 is 199.5-200.5 mm; R1 of the sixth lens is 31.5-32.5 mm, R2 is 10-11 mm; R1 of the seventh lens is 17-18 mm, R2 is 64-65 mm.

[0049] Further, the air gap between the first lens and the second lens is 1.9-2.3 mm; the air gap between the second lens and the third lens is 0.1-0.3 mm; the air gap between the third lens and the fourth lens is 0; the air gap between the fourth lens and the fifth lens is 0; the air gap between the fifth lens and the sixth lens is 0.1-0.3 mm; the air gap between the sixth lens and the seventh lens is 2.1-2.6 mm.

[0050] As shown in Table 1 above, N d value of the material, N d value represents the Abbe number of the material, by determining N d value and N d value, to determine which type of material to use.

[0051] As shown in Table 1 above, N d value of the first lens is 1.63854, V d value is 55.45; N d value of the second lens is 1.84666, V d value is 23.78; N d value of the third lens is 1.60342, V d value is 38.01; N d value of the fourth lens is 1.91082, V d value is 35.25; N d value of the fifth lens is 1.72825, V d value is 28.32; N d value of the sixth lens is 1.91082, V d value is 35.25; N d value of the seventh lens is 1.62005, V d value is 36.35.

[0052] As shown in Table 1, the central thickness of the first lens is 9.5-10.5mm; the central thickness of the second lens is 1.1-1.6mm; the central thickness of the third lens is 10.5-11.5mm; the central thickness of the fourth lens is 0.8-1.3mm; the central thickness of the fifth lens is 5.5-6.5mm; the central thickness of the sixth lens is 0.8-1.3mm; and the central thickness of the seventh lens is 2.2-2.8mm.

[0053] In the utility model, the third lens G3, the fourth lens G4 and the fifth lens G5 are glued to form a combined lens with negative focal length. The mirror surface curvature radius (R1=19.5-20.5mm) of the third lens G3 towards the object side is greater than the mirror surface curvature radius (R2=199.5-200.5mm) of the fifth lens G5 towards the imaging surface, which helps to reduce the chromatic aberration of the lens and has a good effect of blurring the background when shooting a portrait at a long distance.

[0054] As shown in Table 1, the central thickness of the first lens is 9.5-10.5mm; the central thickness of the second lens is 1.1-1.6mm; the central thickness of the third lens is 10.5-11.5mm; the central thickness of the fourth lens is 0.8-1.3mm; the central thickness of the fifth lens is 5.5-6.5mm; the central thickness of the sixth lens is 0.8-1.3mm; and the central thickness of the seventh lens is 2.2-2.8mm. Figure 3 As shown in Table 1, the central thickness of the first lens is 9.5-10.5mm; the central thickness of the second lens is 1.1-1.6mm; the central thickness of the third lens is 10.5-11.5mm; the central thickness of the fourth lens is 0.8-1.3mm; the central thickness of the fifth lens is 5.5-6.5mm; the central thickness of the sixth lens is 0.8-1.3mm; and the central thickness of the seventh lens is 2.2-2.8mm.

[0055] As shown in Table 1, the central thickness of the first lens is 9.5-10.5mm; the central thickness of the second lens is 1.1-1.6mm; the central thickness of the third lens is 10.5-11.5mm; the central thickness of the fourth lens is 0.8-1.3mm; the central thickness of the fifth lens is 5.5-6.5mm; the central thickness of the sixth lens is 0.8-1.3mm; and the central thickness of the seventh lens is 2.2-2.8mm. Figure 4 As shown in Table 1, the central thickness of the first lens is 9.5-10.5mm; the central thickness of the second lens is 1.1-1.6mm; the central thickness of the third lens is 10.5-11.5mm; the central thickness of the fourth lens is 0.8-1.3mm; the central thickness of the fifth lens is 5.5-6.5mm; the central thickness of the sixth lens is 0.8-1.3mm; and the central thickness of the seventh lens is 2.2-2.8mm. Figure 5 As shown in Table 1, the central thickness of the first lens is 9.5-10.5mm; the central thickness of the second lens is 1.1-1.6mm; the central thickness of the third lens is 10.5-11.5mm; the central thickness of the fourth lens is 0.8-1.3mm; the central thickness of the fifth lens is 5.5-6.5mm; the central thickness of the sixth lens is 0.8-1.3mm; and the central thickness of the seventh lens is 2.2-2.8mm.

[0056] In the utility model, the third lens G3, the fourth lens G4 and the fifth lens G5 are glued to form a combined lens with negative focal length. The mirror surface curvature radius (R1=19.5-20.5mm) of the third lens G3 towards the object side is greater than the mirror surface curvature radius (R2=199.5-200.5mm) of the fifth lens G5 towards the imaging surface, which helps to reduce the chromatic aberration of the lens and has a good effect of blurring the background when shooting a portrait at a long distance.

[0057] The above-mentioned embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A mobile phone attachment zoom lens, characterized by, From the object side to the imaging surface successively include: first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens; third lens, fourth lens, fifth lens are glued to form a combined lens with negative refractive power; The optical centers of the respective lenses are located on the same straight line, the mirror surface curvature radius of each lens toward the object side is represented by R1, and the mirror surface curvature radius of each lens toward the imaging surface is represented by R2; R1 of the first lens = 28.5-29.5mm, R2 = 95.5-96.5mm; R1 of the second lens = ∞, R2 = 42-43mm; R1 of the third lens = 19.5-20.5mm, R2 = 109.5-110.5mm; R1 of the fourth lens = 109.5-110.5mm, R2 = 15-16mm; R1 of the fifth lens = 15-16mm, R2 = 199.5-200.5mm; R1 of the sixth lens = 31.5-32.5mm, R2 = 10-11mm; R1 of the seventh lens = 17-18mm, R2 = 64-65mm; The air gap between the first lens and the second lens is 1.9-2.3mm; the air gap between the second lens and the third lens is 0.1-0.3mm; the air gap between the third lens and the fourth lens is 0; the air gap between the fourth lens and the fifth lens is 0; the air gap between the fifth lens and the sixth lens is 0.1-0.3mm; the air gap between the sixth lens and the seventh lens is 2.1-2.6mm.

2. The mobile phone additional telephoto lens according to claim 1, wherein N of the first lens d value of 1.63854, V d value of 55.45; N of the second lens d value of 1.84666, V d value of 23.78; N of the third lens d value of 1.60342, V d value of 38.01; N of the fourth lens d 1.91082, V d 35.25; N of the fifth lens d has a value of 1.72825, V d has a value of 28.32; N of the sixth lens d has a value of 1.91082, V d has a value of 35.25; N of the seventh lens d has a value of 1.62005, V d has a value of 36.

35.

3. The mobile phone additional telephoto lens according to claim 1, wherein The center thickness of the first lens is 9.5-10.5mm; The center thickness of the second lens is 1.1-1.6mm; The center thickness of the third lens is 10.5-11.5mm; The center thickness of the fourth lens is 0.8-1.3mm; The center thickness of the fifth lens is 5.5-6.5mm; The center thickness of the sixth lens is 0.8-1.3mm; The center thickness of the seventh lens is 2.2-2.8mm.

4. The mobile phone additional telephoto lens according to claim 1, wherein The diameter of the first lens is 40-47mm; The diameter of the second lens is 35-47mm; The diameter of the third lens is 29-34mm; The diameter of the fourth lens is 28-34mm; The diameter of the fifth lens is 18-24mm; The diameter of the sixth lens is 16-26mm; The diameter of the seventh lens is 10-18mm.

Images