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TWI777091B - Wide-angle lens assembly - Google Patents

Wide-angle lens assembly Download PDF

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Publication number
TWI777091B
TWI777091B TW108132769A TW108132769A TWI777091B TW I777091 B TWI777091 B TW I777091B TW 108132769 A TW108132769 A TW 108132769A TW 108132769 A TW108132769 A TW 108132769A TW I777091 B TWI777091 B TW I777091B
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Taiwan
Prior art keywords
lens
wide
angle
image side
surface facing
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TW108132769A
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Chinese (zh)
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TW202111377A (en
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許榮順
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大陸商信泰光學（深圳）有限公司
亞洲光學股份有限公司
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Priority to TW108132769A priority Critical patent/TWI777091B/en
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Abstract

A wide-angle lens assembly includes a front lens group and a rear lens group. The front lens group includes a first lens and a second lens. The first lens is a meniscus lens with negative refractive power. The second lens is with negative refractive power and includes a concave surface facing an image side. The rear lens group includes a third lens, a fourth lens, and a fifth lens. The third lens is with positive refractive power. The fourth lens is with positive refractive power. The fifth lens is with negative refractive power and includes a concave surface facing an object side. The first lens, the second lens, the third lens, the fourth lens, and the fifth lens are arranged in order from the object side to the image side along an optical axis. The wide-angle lens assembly satisfies the following condition: - 4.2
Figure 108132769-A0101-11-0002-100
(fH+f1)/f
Figure 108132769-A0101-11-0002-101
-3; wherein f1 is an effective focal length of the first lens, fH is an effective focal length of a lens which is closest to the image side, and f is an effective focal length of the wide-angle lens assembly.

Description

廣角鏡頭(二十二) Wide-angle lens (22)

本發明係有關於一種廣角鏡頭。 The present invention relates to a wide-angle lens.

現今的廣角鏡頭之發展趨勢，除了不斷朝向小型化、大光圈發展外，隨著不同的應用需求，還需具備重量輕及高解析度的特性，習知的廣角鏡頭已經無法滿足現今的需求，需要有另一種新架構的廣角鏡頭，才能同時滿足小型化、大光圈、重量輕及高解析度的需求。 The development trend of today's wide-angle lens, in addition to the continuous development of miniaturization and large aperture, with different application requirements, it also needs to have the characteristics of light weight and high resolution. The conventional wide-angle lens can no longer meet the current needs. Another wide-angle lens with a new architecture can meet the needs of miniaturization, large aperture, light weight and high resolution at the same time.

有鑑於此，本發明之主要目的在於提供一種廣角鏡頭，其鏡頭總長度較短、光圈值較小、重量較輕、解析度較高，但是仍具有良好的光學性能。 In view of this, the main purpose of the present invention is to provide a wide-angle lens, which has a shorter overall lens length, smaller aperture value, lighter weight, and higher resolution, but still has good optical performance.

本發明之廣角鏡頭包括一前透鏡群及一後透鏡群。前透鏡群包括一第一透鏡及一第二透鏡，第一透鏡為彎月型透鏡具有負屈光力，第二透鏡具有負屈光力且包括一凹面朝向一像側。後透鏡群包括一第三透鏡、一第四透鏡及一第五透鏡，第三透鏡具有正屈光力，第四透鏡具有正屈光力，第五透鏡具有負屈光力且包括一凹面朝向一物側。第一透鏡、第二透鏡、第三透鏡、第四透鏡及第五透鏡沿著一光軸從物側至像側依序排列。廣角鏡頭滿足以下條件：-4.2

Figure 108132769-A0101-12-0001-63
(fH+f1)/f
Figure 108132769-A0101-12-0001-64
-3；其中，f1為第一透鏡之 一有效焦距，fH為一最靠近像側的透鏡之一有效焦距，f為廣角鏡頭之一有效焦距。 The wide-angle lens of the present invention includes a front lens group and a rear lens group. The front lens group includes a first lens and a second lens. The first lens is a meniscus lens with negative refractive power, and the second lens has negative refractive power and includes a concave surface facing an image side. The rear lens group includes a third lens, a fourth lens and a fifth lens. The third lens has positive refractive power, the fourth lens has positive refractive power, and the fifth lens has negative refractive power and includes a concave surface facing an object side. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged along an optical axis from the object side to the image side. The wide-angle lens meets the following conditions: -4.2
Figure 108132769-A0101-12-0001-63
(f H +f 1 )/f
Figure 108132769-A0101-12-0001-64
-3; wherein, f 1 is an effective focal length of one of the first lenses, f H is an effective focal length of a lens closest to the image side, and f is an effective focal length of a wide-angle lens.

本發明之另一廣角鏡頭包括一前透鏡群及一後透鏡群。前透鏡群包括一第一透鏡及一第二透鏡，第一透鏡為彎月型透鏡具有負屈光力，第二透鏡具有負屈光力且包括一凹面朝向一像側。後透鏡群包括一第三透鏡、一第四透鏡及一第五透鏡，第三透鏡具有正屈光力，第四透鏡具有正屈光力，第五透鏡具有負屈光力且包括一凹面朝向一物側。第一透鏡、第二透鏡、第三透鏡、第四透鏡及第五透鏡沿著一光軸從物側至像側依序排列。廣角鏡頭滿足以下條件：-11.2mm

Figure 108132769-A0101-12-0002-65
f+f1
Figure 108132769-A0101-12-0002-66
-5.3mm；其中，f1為第一透鏡之一有效焦距，f為廣角鏡頭之一有效焦距。 Another wide-angle lens of the present invention includes a front lens group and a rear lens group. The front lens group includes a first lens and a second lens. The first lens is a meniscus lens with negative refractive power, and the second lens has negative refractive power and includes a concave surface facing an image side. The rear lens group includes a third lens, a fourth lens and a fifth lens. The third lens has positive refractive power, the fourth lens has positive refractive power, and the fifth lens has negative refractive power and includes a concave surface facing an object side. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged along an optical axis from the object side to the image side. The wide-angle lens meets the following conditions: -11.2mm
Figure 108132769-A0101-12-0002-65
f+f 1
Figure 108132769-A0101-12-0002-66
-5.3mm; wherein, f 1 is the effective focal length of one of the first lenses, and f is the effective focal length of one of the wide-angle lenses.

其中前透鏡群可更包括一第六透鏡，設置於第一透鏡與第二透鏡之間。 The front lens group may further include a sixth lens disposed between the first lens and the second lens.

其中廣角鏡頭滿足以下條件：-13mm

Figure 108132769-A0101-12-0002-67
ff-f
Figure 108132769-A0101-12-0002-68
-8mm；其中，ff為前透鏡群之一有效焦距，f為廣角鏡頭之一有效焦距。 Among them, the wide-angle lens meets the following conditions: -13mm
Figure 108132769-A0101-12-0002-67
f f -f
Figure 108132769-A0101-12-0002-68
-8mm; among them, f f is the effective focal length of one of the front lens groups, and f is the effective focal length of one of the wide-angle lenses.

其中廣角鏡頭滿足以下條件：70

Figure 108132769-A0101-12-0002-69
VdG+VdH
Figure 108132769-A0101-12-0002-70
110；其中，VdH為一最靠近像側的透鏡之一阿貝係數，VdG為一第二靠近像側的透鏡之一阿貝係數。 Among them, the wide-angle lens meets the following conditions: 70
Figure 108132769-A0101-12-0002-69
Vd G +Vd H
Figure 108132769-A0101-12-0002-70
110; wherein, Vd H is an Abbe coefficient of a lens closest to the image side, and Vd G is an Abbe coefficient of a second lens close to the image side.

其中廣角鏡頭滿足以下條件：13.6mm

Figure 108132769-A0101-12-0002-71
fK-f1
Figure 108132769-A0101-12-0002-72
25.2mm；其中，f1為第一透鏡之一有效焦距，fK為一第三靠近像側的透鏡之一有效焦距。 Among them, the wide-angle lens meets the following conditions: 13.6mm
Figure 108132769-A0101-12-0002-71
f K -f 1
Figure 108132769-A0101-12-0002-72
25.2mm; wherein, f 1 is an effective focal length of the first lens, and f K is an effective focal length of a third lens close to the image side.

其中廣角鏡頭滿足以下條件：3.1

Figure 108132769-A0101-12-0002-73
TTL/TG
Figure 108132769-A0101-12-0002-74
6.4；其中，TTL為第一透鏡之一物側面至一成像面於光軸上之一間距，TG為第二靠近像側的透鏡於光軸上之一厚度。 Among them, the wide-angle lens meets the following conditions: 3.1
Figure 108132769-A0101-12-0002-73
TTL/ TG
Figure 108132769-A0101-12-0002-74
6.4; wherein, TTL is the distance between the object side of the first lens and an imaging surface on the optical axis, and TG is the thickness of the second lens close to the image side on the optical axis.

本發明之廣角鏡頭可更包括一光圈，設置於前透鏡群與後透鏡群之間。 The wide-angle lens of the present invention may further include a diaphragm disposed between the front lens group and the rear lens group.

其中第一透鏡包括一凸面朝向物側及一凹面朝向像側，第三透鏡包括一凸面朝向物側及另一凸面朝向像側，第四透鏡包括一凸面朝向物側及另一凸面朝向像側。 The first lens includes a convex surface facing the object side and a concave surface facing the image side, the third lens includes a convex surface facing the object side and another convex surface facing the image side, and the fourth lens includes a convex surface facing the object side and another convex surface facing the image side .

為使本發明之上述目的、特徵、和優點能更明顯易懂，下文特舉較佳實施例並配合所附圖式做詳細說明。 In order to make the above objects, features, and advantages of the present invention more clearly understood, preferred embodiments are hereinafter described in detail with the accompanying drawings.

1、2、3、4、5:廣角鏡頭 1, 2, 3, 4, 5: Wide angle lens

L11、L21、L31、L41、L51:第一透鏡 L11, L21, L31, L41, L51: First lens

L12、L22、L32、L42、L52:第二透鏡 L12, L22, L32, L42, L52: Second lens

L13、L23、L33、L43、L53:第三透鏡 L13, L23, L33, L43, L53: Third lens

L14、L24、L34、L44、L54:第四透鏡 L14, L24, L34, L44, L54: Fourth lens

L15、L25、L35、L45、L55:第五透鏡 L15, L25, L35, L45, L55: Fifth lens

L16、L26、L36、L46:第六透鏡 L16, L26, L36, L46: Sixth lens

ST1、ST2、ST3、ST4、ST5:光圈 ST1, ST2, ST3, ST4, ST5: Aperture

OA1、OA2、OA3、OA4、OA5:光軸 OA1, OA2, OA3, OA4, OA5: Optical axis

OF1、OF2、OF3、OF4、OF5:濾光片 OF1, OF2, OF3, OF4, OF5: Filters

IMA1、IMA2、IMA3、IMA4、IMA5:成像面 IMA1, IMA2, IMA3, IMA4, IMA5: Imaging plane

S11、S21、S31、S41、S51:第一透鏡物側面 S11, S21, S31, S41, S51: the object side of the first lens

S12、S22、S32、S42、S52:第一透鏡像側面 S12, S22, S32, S42, S52: the image side of the first lens

S15、S25、S35、S45、S53:第二透鏡物側面 S15, S25, S35, S45, S53: Object side of the second lens

S16、S26、S36、S46、S54:第二透鏡像側面 S16, S26, S36, S46, S54: second lens image side

S17、S27、S37、S47、S55:光圈面 S17, S27, S37, S47, S55: Aperture surface

S18、S28、S38、S48、S56:第三透鏡物側面 S18, S28, S38, S48, S56: Object side of the third lens

S19、S29、S39、S49、S57:第三透鏡像側面 S19, S29, S39, S49, S57: third lens image side

S110、S210、S310、S410、S58:第四透鏡物側面 S110, S210, S310, S410, S58: the object side of the fourth lens

S111、S211、S311、S411、S59:第四透鏡像側面 S111, S211, S311, S411, S59: image side of the fourth lens

S112、S212、S312、S412、S510:第五透鏡物側面 S112, S212, S312, S412, S510: the object side of the fifth lens

S113、S213、S313、S413、S511:第五透鏡像側面 S113, S213, S313, S413, S511: image side of the fifth lens

S13、S23、S33、S43:第六透鏡物側面 S13, S23, S33, S43: object side of sixth lens

S14、S24、S34、S44:第六透鏡像側面 S14, S24, S34, S44: the image side of the sixth lens

S114、S214、S314、S414、S512:濾光片物側面 S114, S214, S314, S414, S512: side of filter object

S115、S215、S315、S415、S513:濾光片像側面 S115, S215, S315, S415, S513: Filter image side

第1圖係依據本發明之廣角鏡頭之第一實施例的透鏡配置與光路示意圖。 FIG. 1 is a schematic diagram of the lens configuration and optical path of the first embodiment of the wide-angle lens according to the present invention.

第2A圖係依據本發明之廣角鏡頭之第一實施例的縱向像差(Longitudinal Aberration)圖。 FIG. 2A is a longitudinal aberration (Longitudinal Aberration) diagram of the first embodiment of the wide-angle lens according to the present invention.

第2B圖係依據本發明之廣角鏡頭之第一實施例的場曲(Field Curvature)圖。 FIG. 2B is a field curvature diagram of the first embodiment of the wide-angle lens according to the present invention.

第2C圖係依據本發明之廣角鏡頭之第一實施例的畸變(Distortion)圖。 FIG. 2C is a distortion diagram of the first embodiment of the wide-angle lens according to the present invention.

第3圖係依據本發明之廣角鏡頭之第二實施例的透鏡配置與光路示意圖。 FIG. 3 is a schematic diagram of the lens configuration and optical path of the second embodiment of the wide-angle lens according to the present invention.

第4A圖係依據本發明之廣角鏡頭之第二實施例的縱向像差圖。 FIG. 4A is a longitudinal aberration diagram of the second embodiment of the wide-angle lens according to the present invention.

第4B圖係依據本發明之廣角鏡頭之第二實施例的場曲圖。 FIG. 4B is a field curvature diagram of the second embodiment of the wide-angle lens according to the present invention.

第4C圖係依據本發明之廣角鏡頭之第二實施例的畸變圖。 FIG. 4C is a distortion diagram of the second embodiment of the wide-angle lens according to the present invention.

第5圖係依據本發明之廣角鏡頭之第三實施例的透鏡配置與光路示意 圖。 FIG. 5 is a schematic diagram of the lens configuration and optical path of the third embodiment of the wide-angle lens according to the present invention. picture.

第6A圖係依據本發明之廣角鏡頭之第三實施例的縱向像差圖。 FIG. 6A is a longitudinal aberration diagram of the third embodiment of the wide-angle lens according to the present invention.

第6B圖係依據本發明之廣角鏡頭之第三實施例的場曲圖。 FIG. 6B is a field curvature diagram of the third embodiment of the wide-angle lens according to the present invention.

第6C圖係依據本發明之廣角鏡頭之第三實施例的畸變圖。 FIG. 6C is a distortion diagram of the third embodiment of the wide-angle lens according to the present invention.

第7圖係依據本發明之廣角鏡頭之第四實施例的透鏡配置與光路示意圖。 FIG. 7 is a schematic diagram of the lens configuration and optical path of the fourth embodiment of the wide-angle lens according to the present invention.

第8A圖係依據本發明之廣角鏡頭之第四實施例的縱向像差圖。 FIG. 8A is a longitudinal aberration diagram of the fourth embodiment of the wide-angle lens according to the present invention.

第8B圖係依據本發明之廣角鏡頭之第四實施例的場曲圖。 FIG. 8B is a field curvature diagram of the fourth embodiment of the wide-angle lens according to the present invention.

第8C圖係依據本發明之廣角鏡頭之第四實施例的畸變圖。 FIG. 8C is a distortion diagram of the fourth embodiment of the wide-angle lens according to the present invention.

第9圖係依據本發明之廣角鏡頭之第五實施例的透鏡配置與光路示意圖。 FIG. 9 is a schematic diagram of a lens configuration and an optical path of a fifth embodiment of the wide-angle lens according to the present invention.

第10A圖係依據本發明之廣角鏡頭之第五實施例的縱向像差圖。 FIG. 10A is a longitudinal aberration diagram of the fifth embodiment of the wide-angle lens according to the present invention.

第10B圖係依據本發明之廣角鏡頭之第五實施例的場曲圖。 FIG. 10B is a field curvature diagram of the fifth embodiment of the wide-angle lens according to the present invention.

第10C圖係依據本發明之廣角鏡頭之第五實施例的畸變圖。 FIG. 10C is a distortion diagram of the fifth embodiment of the wide-angle lens according to the present invention.

本發明提供一種廣角鏡頭，包括：一前透鏡群；及一後透鏡群；前透鏡群包括一第一透鏡及一第二透鏡，此第一透鏡為彎月型透鏡具有負屈光力，此第二透鏡具有負屈光力且包括一凹面朝向一像側；後透鏡群包括一第三透鏡、一第四透鏡及一第五透鏡，此第三透鏡具有正屈光力，此第四透鏡具有正屈光力，此第五透鏡具有負屈光力且包括一凹面朝向一物側；其中第一透鏡、第二透鏡、第三透鏡、第四透鏡及第五透鏡沿著一光軸從物側至像側依序排列；其中廣角鏡頭滿足以下條件： -4.2

Figure 108132769-A0101-12-0005-75
(fH+f1)/f
Figure 108132769-A0101-12-0005-76
-3；其中，f1為第一透鏡之一有效焦距，fH為一最靠近像側的透鏡之一有效焦距，f為廣角鏡頭之一有效焦距。 The invention provides a wide-angle lens, comprising: a front lens group; and a rear lens group; the front lens group includes a first lens and a second lens, the first lens is a meniscus lens with negative refractive power, and the second lens It has negative refractive power and includes a concave surface facing an image side; the rear lens group includes a third lens, a fourth lens and a fifth lens, the third lens has positive refractive power, the fourth lens has positive refractive power, and the fifth lens has positive refractive power. The lens has negative refractive power and includes a concave surface facing an object side; wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged along an optical axis from the object side to the image side; wherein the wide-angle lens The following conditions are met: -4.2
Figure 108132769-A0101-12-0005-75
(f H +f 1 )/f
Figure 108132769-A0101-12-0005-76
-3; wherein, f 1 is an effective focal length of one of the first lenses, f H is an effective focal length of a lens closest to the image side, and f is an effective focal length of a wide-angle lens.

本發明提供另一種廣角鏡頭，包括：一前透鏡群；及一後透鏡群；前透鏡群包括一第一透鏡及一第二透鏡，此第一透鏡為彎月型透鏡具有負屈光力，此第二透鏡具有負屈光力且包括一凹面朝向一像側；後透鏡群包括一第三透鏡、一第四透鏡及一第五透鏡，此第三透鏡具有正屈光力，此第四透鏡具有正屈光力，此第五透鏡具有負屈光力且包括一凹面朝向一物側；其中第一透鏡、第二透鏡、第三透鏡、第四透鏡及第五透鏡沿著一光軸從物側至像側依序排列；其中廣角鏡頭滿足以下條件：-11.2mm

Figure 108132769-A0101-12-0005-77
f+f1
Figure 108132769-A0101-12-0005-78
-5.3mm；其中，f1為第一透鏡之一有效焦距，f為廣角鏡頭之一有效焦距。 The present invention provides another wide-angle lens, comprising: a front lens group; and a rear lens group; the front lens group includes a first lens and a second lens, the first lens is a meniscus lens with negative refractive power, and the second lens The lens has negative refractive power and includes a concave surface facing an image side; the rear lens group includes a third lens, a fourth lens and a fifth lens, the third lens has positive refractive power, the fourth lens has positive refractive power, and the fourth lens has positive refractive power. Five lenses have negative refractive power and include a concave surface facing an object side; wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged along an optical axis from the object side to the image side; wherein The wide-angle lens meets the following conditions: -11.2mm
Figure 108132769-A0101-12-0005-77
f+f 1
Figure 108132769-A0101-12-0005-78
-5.3mm; wherein, f 1 is the effective focal length of one of the first lenses, and f is the effective focal length of one of the wide-angle lenses.

請參閱底下表一、表二、表四、表五、表七、表八、表十、表十一、表十三及表十四，其中表一、表四、表七、表十及表十三分別為依據本發明之廣角鏡頭之第一實施例至第五實施例的各透鏡之相關參數表，表二、表五、表八、表十一及表十四分別為表一、表四、表七、表十及表十三中非球面透鏡之非球面表面之相關參數表。 Please refer to Table 1, Table 2, Table 4, Table 5, Table 7, Table 8, Table 10, Table 11, Table 13 and Table 14 below, among which Table 1, Table 4, Table 7, Table 10 and Table 14 Thirteen are the relevant parameter tables of the lenses according to the first embodiment to the fifth embodiment of the wide-angle lens according to the present invention, and Table 2, Table 5, Table 8, Table 11 and Table 14 are respectively Table 1 and Table 4. , Table 7, Table 10 and Table 13 for the relevant parameters of the aspheric surface of the aspheric lens.

第1、3、5、7、9圖分別為本發明之廣角鏡頭之第一、二、三、四、五實施例的透鏡配置與光路示意圖，其中第一透鏡L11、L21、L31、L41、L51為彎月型透具有負屈光力，由塑膠材質製成，其物側面S11、S21、S31、S41、S51為凸面，像側面S12、S22、S32、S42、S52為凹面，物側面S11、S21、S31、S41、S51與像側面S12、S22、S32、S42、S52皆為非球面表面。 Figures 1, 3, 5, 7, and 9 are schematic diagrams of the lens configuration and optical path of the first, second, third, fourth, and fifth embodiments of the wide-angle lens of the present invention, wherein the first lenses L11, L21, L31, L41, L51 It is a meniscus lens with negative refractive power. It is made of plastic material. The object sides S11, S21, S31, S41, and S51 are convex, while the sides S12, S22, S32, S42, and S52 are concave. The object sides S11, S21, S31, S41, S51 and the image side surfaces S12, S22, S32, S42, and S52 are all aspherical surfaces.

第二透鏡L12、L22、L32、L42、L52具有負屈光力，由塑膠材質製成，其像側面S16、S26、S36、S46、S54為凹面，像側面S16、S26、S36、S46、S54皆為非球面表面。 The second lenses L12, L22, L32, L42, L52 have negative refractive power and are made of plastic material. aspheric surface.

第三透鏡L13、L23、L33、L43、L53為雙凸透鏡具有正屈光力，由塑膠材質製成，其物側面S18、S28、S38、S48、S56為凸面，像側面S19、S29、S39、S49、S57為凸面，物側面S18、S28、S38、S48、S56與像側面S19、S29、S39、S49、S57皆為非球面表面。 The third lenses L13, L23, L33, L43, L53 are biconvex lenses with positive refractive power, made of plastic material, and the object sides S18, S28, S38, S48, S56 are convex, and the image sides S19, S29, S39, S49, S57 is a convex surface, and the object side surfaces S18, S28, S38, S48, S56 and the image side surfaces S19, S29, S39, S49, and S57 are all aspheric surfaces.

第四透鏡L14、L24、L34、L44、L54為雙凸透鏡具有正屈光力，由塑膠材質製成，其物側面S110、S210、S310、S410、S58為凸面，像側面S111、S211、S311、S411、S59為凸面。 The fourth lenses L14, L24, L34, L44, L54 are biconvex lenses with positive refractive power, made of plastic material, and the object sides S110, S210, S310, S410, S58 are convex, and the image sides S111, S211, S311, S411, S59 is a convex surface.

第五透鏡L15、L25、L35、L45、L55具有負屈光力，由塑膠材質製成，其物側面S112、S212、S312、S412、S510為凹面，物側面S112、S212、S312、S412、S510與像側面S113、S213、S313、S413、S511皆為非球面表面。 The fifth lens L15, L25, L35, L45, L55 has negative refractive power and is made of plastic material. The object sides S112, S212, S312, S412, and S510 are concave. The side surfaces S113, S213, S313, S413, and S511 are all aspherical surfaces.

第六透鏡L16、L26、L36、L46具有正屈光力，由塑膠材質製成，其物側面S13、S23、S33、S43為非球面表面。 The sixth lenses L16 , L26 , L36 and L46 have positive refractive power and are made of plastic material, and the object side surfaces S13 , S23 , S33 and S43 are aspherical surfaces.

另外，廣角鏡頭1、2、3、4、5至少滿足底下其中一條件：

Figure 108132769-A0101-12-0006-1
In addition, wide-angle lenses 1, 2, 3, 4, and 5 meet at least one of the following conditions:
Figure 108132769-A0101-12-0006-1

Figure 108132769-A0101-12-0006-2
Figure 108132769-A0101-12-0006-2

Figure 108132769-A0101-12-0006-3
Figure 108132769-A0101-12-0006-3

Figure 108132769-A0101-12-0006-4
Figure 108132769-A0101-12-0006-4

Figure 108132769-A0101-12-0006-5
Figure 108132769-A0101-12-0006-5

Figure 108132769-A0101-12-0007-6
Figure 108132769-A0101-12-0007-6

其中，f1為第一實施例至第五實施例中，第一透鏡L11、L21、L31、L41、L51之一有效焦距，fH為第一實施例至第五實施例中，最靠近像側的透鏡L15、L25、L35、L45、L55之一有效焦距，ff為第一實施例至第五實施例中，前透鏡群LG1F、LG2F、LG3F、LG4F、LG5F之一有效焦距，fK為第一實施例至第五實施例中，第三靠近像側的透鏡L13、L23、L33、L43、L53之一有效焦距，f為第一實施例至第五實施例中，廣角鏡頭1、2、3、4、5之一有效焦距，VdH為第一實施例至第五實施例中，最靠近像側的透鏡L15、L25、L35、L45、L55之一阿貝係數，VdG為第一實施例至第五實施例中，第二靠近像側的透鏡L14、L24、L34、L44、L54之一阿貝係數，TTL為第一實施例至第五實施例中，第一透鏡L11、L21、L31、L41、L51之物側面S11、S21、S31、S41、S51分別至一成像面IMA1、IMA2、IMA3、IMA4、IMA5於光軸OA1、OA2、OA3、OA4、OA5上之一間距，TG為第一實施例至第五實施例中，第二靠近像側的透鏡L15、L25、L35、L45、L55於光軸OA1、OA2、OA3、OA4、OA5上之一厚度。使得廣角鏡頭1、2、3、4、5能有效的縮短鏡頭總長度、有效的縮小光圈值、有效的減輕鏡頭重量、有效的提升解析度、有效的修正像差、有效的修正色差。 Among them, f 1 is one of the effective focal lengths of the first lenses L11, L21, L31, L41 and L51 in the first to fifth embodiments, and f H is the closest to the image in the first to fifth embodiments One of the effective focal lengths of the side lenses L15, L25, L35, L45 and L55, f f is one of the front lens groups LG1 F , LG2 F , LG3 F , LG4 F , and LG5 F in the first to fifth embodiments Effective focal length, f K is one of the effective focal lengths of the third lenses L13, L23, L33, L43, and L53 close to the image side in the first to fifth embodiments, and f is the first to fifth embodiments , one of the effective focal lengths of the wide-angle lenses 1, 2, 3, 4, and 5, and Vd H is one of the Abbe coefficients of the lenses L15, L25, L35, L45, and L55 closest to the image side in the first to fifth embodiments. , Vd G is one of the Abbe coefficients of the second lens L14, L24, L34, L44, L54 near the image side in the first to fifth embodiments, TTL is the first to fifth embodiments, The side surfaces S11, S21, S31, S41, and S51 of the first lenses L11, L21, L31, L41, and L51 are respectively to an imaging plane IMA1, IMA2, IMA3, IMA4, and IMA5 on the optical axes OA1, OA2, OA3, OA4, OA5 The distance above, T G is one of the first to fifth embodiments, the second lens L15, L25, L35, L45, L55 close to the image side on the optical axis OA1, OA2, OA3, OA4, OA5 thickness. The wide-angle lens 1, 2, 3, 4, and 5 can effectively shorten the total length of the lens, effectively reduce the aperture value, effectively reduce the weight of the lens, effectively improve the resolution, effectively correct the aberration, and effectively correct the chromatic aberration.

現詳細說明本發明之廣角鏡頭之第一實施例。請參閱第1圖，廣角鏡頭1沿著一光軸OA1從一物側至一像側依序包括一前透鏡群LG1F、一光圈ST1、一後透鏡群LG1R及一濾光片OF1，前透鏡群LG1F包括一第一透鏡L11、一第六透鏡L16及一第二透鏡L12，後透鏡群LG1R包括一第三透鏡L13、一第四透鏡L14及一第五透鏡L15。成像時，來自物側之 光線最後成像於一成像面IMA1上。根據【實施方式】第一至九段落，其中：第二透鏡L12為雙凹透鏡，其物側面S15為凹面，物側面S15為非球面表面；第四透鏡L14其物側面S110與像側面S111皆為球面表面；第五透鏡L15為彎月型透鏡，其像側面S113為凸面；第六透鏡L16為彎月型透鏡，其物側面S13為凹面，像側面S14為凸面，像側面S14為非球面表面；濾光片OF1其物側面S114與像側面S115皆為平面；利用上述透鏡、光圈ST1及至少滿足條件(1)至條件(6)其中一條件之設計，使得廣角鏡頭1能有效的縮短鏡頭總長度、有效的縮小光圈值、有效的減輕鏡頭重量、有效的提升解析度、有效的修正像差、有效的修正色差。 The first embodiment of the wide-angle lens of the present invention will now be described in detail. Please refer to FIG. 1, the wide-angle lens 1 includes a front lens group LG1 F , an aperture ST1, a rear lens group LG1 R , and a filter OF1 in sequence along an optical axis OA1 from an object side to an image side. The lens group LG1 F includes a first lens L11 , a sixth lens L16 and a second lens L12 , and the rear lens group LG1 R includes a third lens L13 , a fourth lens L14 and a fifth lens L15 . During imaging, the light from the object side is finally imaged on an imaging plane IMA1. According to paragraphs 1 to 9 of [Embodiment], wherein: the second lens L12 is a biconcave lens, its object side S15 is a concave surface, and its object side S15 is an aspherical surface; the fourth lens L14 has both the object side S110 and the image side S111 Spherical surface; the fifth lens L15 is a meniscus lens, and its image side S113 is a convex surface; the sixth lens L16 is a meniscus lens, its object side S13 is a concave surface, the image side S14 is a convex surface, and the image side S14 is an aspheric surface Filter OF1, its object side S114 and image side S115 are all planes; Utilize above-mentioned lens, aperture ST1 and at least meet the design of one of the conditions of condition (1) to condition (6), so that wide-angle lens 1 can effectively shorten the total length of the lens It can effectively reduce the aperture value, effectively reduce the weight of the lens, effectively improve the resolution, effectively correct the aberration, and effectively correct the chromatic aberration.

表一為第1圖中廣角鏡頭1之各透鏡之相關參數表。 Table 1 is a table of relevant parameters of each lens of the wide-angle lens 1 in Fig. 1 .

Figure 108132769-A0101-12-0008-7
Figure 108132769-A0101-12-0008-7
Figure 108132769-A0101-12-0009-8
Figure 108132769-A0101-12-0009-8

表一中非球面透鏡之非球面表面凹陷度z由下列公式所得到：z=ch2/{1+[1-(k+1)c2h2]1/2}+Ah4+Bh6+Ch8 The aspheric surface concavity z of the aspheric lens in Table 1 is obtained by the following formula: z=ch 2 /{1+[1-(k+1)c 2 h 2 ] 1/2 }+Ah 4 +Bh 6 +Ch 8

其中：c：曲率；h：透鏡表面任一點至光軸之垂直距離；k：圓錐係數；A~C：非球面係數。 Among them: c: curvature; h: vertical distance from any point on the lens surface to the optical axis; k: conic coefficient; A~C: aspheric coefficient.

表二為表一中非球面透鏡之非球面表面之相關參數表，其中k為圓錐係數(Conic Constant)、A~C為非球面係數。 Table 2 is a table of relevant parameters of the aspheric surface of the aspheric lens in Table 1, where k is the Conic Constant, and A~C are the aspheric coefficients.

Figure 108132769-A0101-12-0009-9
Figure 108132769-A0101-12-0009-9

表三為第一實施例之廣角鏡頭1之相關參數值及其對應條件(1)至條件(6)之計算值，由表三可知，第一實施例之廣角鏡頭1皆能滿足條件(1)至條件(6)之要求。 Table 3 shows the relevant parameter values of the wide-angle lens 1 of the first embodiment and the calculated values of the corresponding conditions (1) to (6). It can be seen from Table 3 that the wide-angle lens 1 of the first embodiment can meet the conditions (1) to the requirements of condition (6).

Figure 108132769-A0101-12-0010-10
Figure 108132769-A0101-12-0010-10

另外，第一實施例之廣角鏡頭1的光學性能也可達到要求，由第2A圖可看出，第一實施例之廣角鏡頭1其縱向像差介於-0.004mm至0.011mm之間。由第2B圖可看出，第一實施例之廣角鏡頭1其場曲介於-0.015mm至0.005mm之間。由第2C圖可看出，第一實施例之廣角鏡頭1其畸變介於-7%至0%之間。 In addition, the optical performance of the wide-angle lens 1 of the first embodiment can also meet the requirements. It can be seen from FIG. 2A that the longitudinal aberration of the wide-angle lens 1 of the first embodiment is between -0.004mm and 0.011mm. It can be seen from FIG. 2B that the field curvature of the wide-angle lens 1 of the first embodiment is between -0.015mm and 0.005mm. It can be seen from FIG. 2C that the distortion of the wide-angle lens 1 of the first embodiment is between -7% and 0%.

顯見第一實施例之廣角鏡頭1之縱向像差、場曲、畸變都能被有效修正，從而得到較佳的光學性能。 It is obvious that the longitudinal aberration, field curvature and distortion of the wide-angle lens 1 of the first embodiment can be effectively corrected, thereby obtaining better optical performance.

請參閱第3圖，第3圖係依據本發明之廣角鏡頭之第二實施例的透鏡配置與光路示意圖。廣角鏡頭2沿著一光軸OA2從一物側至一像側依序包括一前透鏡群LG2F、一光圈ST2、一後透鏡群LG2R及一濾光片OF2，前透鏡群LG2F包括一第一透鏡L21、一第六透鏡L26及一第二透鏡L22，後透鏡群LG2R包括一第三透鏡L23、一第四透鏡L24及一第五透鏡L25。成像時，來自物側之光線最後成像於一成像面IMA2上。根據【實施方式】第一至九段落，其中：第二透鏡L22為雙凹透鏡，其物側面S25為凹面，物側面S25為非球面表面； 第四透鏡L24，其物側面S210與像側面S211皆為球面表面；第五透鏡L25為雙凹透鏡，其像側面S213為凹面；第六透鏡L26為雙凸透鏡，其物側面S23為凸面，像側面S24為凸面，像側面S24為非球面表面；濾光片OF2其物側面S214與像側面S215皆為平面；利用上述透鏡、光圈ST2及至少滿足條件(1)至條件(6)其中一條件之設計，使得廣角鏡頭2能有效的縮短鏡頭總長度、有效的縮小光圈值、有效的減輕鏡頭重量、有效的提升解析度、有效的修正像差、有效的修正色差。 Please refer to FIG. 3 . FIG. 3 is a schematic diagram of the lens configuration and optical path of the second embodiment of the wide-angle lens according to the present invention. The wide-angle lens 2 includes a front lens group LG2 F , an aperture ST2, a rear lens group LG2 R , and a filter OF2 in sequence from an object side to an image side along an optical axis OA2, and the front lens group LG2 F includes a The first lens L21, a sixth lens L26 and a second lens L22, the rear lens group LG2 R includes a third lens L23, a fourth lens L24 and a fifth lens L25. During imaging, the light from the object side is finally imaged on an imaging plane IMA2. According to the first to ninth paragraphs of [Embodiment], wherein: the second lens L22 is a biconcave lens, the object side S25 is a concave surface, and the object side S25 is an aspheric surface; the fourth lens L24, the object side S210 and the image side S211 are both be a spherical surface; the fifth lens L25 is a double concave lens, and its image side S213 is a concave surface; the sixth lens L26 is a biconvex lens, and its object side S23 is a convex surface, and the image side S24 is a convex surface, and the image side S24 is an aspheric surface; The object side S214 and the image side S215 of the film OF2 are both planes; using the above-mentioned lens, aperture ST2 and a design that satisfies at least one of the conditions (1) to (6), the wide-angle lens 2 can effectively shorten the total length of the lens, effectively It can effectively reduce the aperture value, effectively reduce the weight of the lens, effectively improve the resolution, effectively correct the aberration, and effectively correct the chromatic aberration.

表四為第3圖中廣角鏡頭2之各透鏡之相關參數表。 Table 4 is a table of relevant parameters of each lens of the wide-angle lens 2 in Figure 3.

Figure 108132769-A0101-12-0011-11
Figure 108132769-A0101-12-0011-11
Figure 108132769-A0101-12-0012-12
Figure 108132769-A0101-12-0012-12

表四中非球面透鏡之非球面表面凹陷度z之定義，與第一實施例中表一之非球面透鏡之非球面表面凹陷度z之定義相同，在此皆不加以贅述。 The definition of the aspherical surface concavity z of the aspherical lens in Table 4 is the same as the definition of the aspherical surface concavity z of the aspherical lens in Table 1 in the first embodiment, and will not be repeated here.

表五為表四中非球面透鏡之非球面表面之相關參數表，其中k為圓錐係數(Conic Constant)、A~C為非球面係數。 Table 5 is a table of relevant parameters of the aspheric surface of the aspheric lens in Table 4, where k is the Conic Constant, and A~C are the aspheric coefficients.

Figure 108132769-A0101-12-0012-13
Figure 108132769-A0101-12-0012-13

表六為第二實施例之廣角鏡頭2之相關參數值及其對應條件(1)至條件(6)之計算值，由表六可知，第二實施例之廣角鏡頭2皆能滿足條件(1)至條件(6)之要求。 Table 6 shows the relevant parameter values of the wide-angle lens 2 of the second embodiment and the calculated values of the corresponding conditions (1) to (6). It can be seen from Table 6 that the wide-angle lens 2 of the second embodiment can meet the conditions (1) to the requirements of condition (6).

Figure 108132769-A0101-12-0012-25
Figure 108132769-A0101-12-0012-25

另外，第二實施例之廣角鏡頭2的光學性能也可達到要求，由第4A圖可看出，第二實施例之廣角鏡頭2其縱向像差介於-0.004mm至0.015mm之間。由第4B圖可看出，第二實施例之廣角鏡頭2其場曲介於-0.02 mm至0.005mm之間。由第4C圖可看出，第二實施例之廣角鏡頭2其畸變介於-9%至1%之間。 In addition, the optical performance of the wide-angle lens 2 of the second embodiment can also meet the requirements. It can be seen from FIG. 4A that the longitudinal aberration of the wide-angle lens 2 of the second embodiment is between -0.004mm and 0.015mm. It can be seen from Fig. 4B that the field curvature of the wide-angle lens 2 of the second embodiment is between -0.02 Between mm and 0.005mm. It can be seen from FIG. 4C that the distortion of the wide-angle lens 2 of the second embodiment is between -9% and 1%.

顯見第二實施例之廣角鏡頭2之縱向像差、場曲、畸變都能被有效修正，從而得到較佳的光學性能。 It is obvious that the longitudinal aberration, field curvature, and distortion of the wide-angle lens 2 of the second embodiment can be effectively corrected, thereby obtaining better optical performance.

請參閱第5圖，第5圖係依據本發明之廣角鏡頭之第三實施例的透鏡配置與光路示意圖。廣角鏡頭3沿著一光軸OA3從一物側至一像側依序包括一前透鏡群LG3F、一光圈ST3、一後透鏡群LG3R及一濾光片OF3，前透鏡群LG3F包括一第一透鏡L31、一第六透鏡L36及一第二透鏡L32，後透鏡群LG3R包括一第三透鏡L33、一第四透鏡L34及一第五透鏡L35。成像時，來自物側之光線最後成像於一成像面IMA3上。根據【實施方式】第一至九段落，其中：第二透鏡L32為雙凹透鏡，其物側面S35為凹面，物側面S35為非球面表面；第四透鏡L34，其物側面S310與像側面S311皆為非球面表面；第五透鏡L35為彎月型透鏡，其像側面S313為凸面；第六透鏡L36為彎月型透鏡，其物側面S33為凸面，像側面S34為凹面，像側面S34為非球面表面；濾光片OF3其物側面S314與像側面S315皆為平面；利用上述透鏡、光圈ST3及至少滿足條件(1)至條件(6)其中一條件之設計，使得廣角鏡頭3能有效的縮短鏡頭總長度、有效的縮小光圈值、有效的減輕鏡頭重量、有效的提升解析度、有效的修正像差、有效 的修正色差。 Please refer to FIG. 5. FIG. 5 is a schematic diagram of the lens configuration and optical path of the third embodiment of the wide-angle lens according to the present invention. The wide-angle lens 3 includes a front lens group LG3 F , an aperture ST3, a rear lens group LG3 R , and a filter OF3 in sequence from an object side to an image side along an optical axis OA3, and the front lens group LG3 F includes a The first lens L31, a sixth lens L36 and a second lens L32, the rear lens group LG3 R includes a third lens L33, a fourth lens L34 and a fifth lens L35. During imaging, the light from the object side is finally imaged on an imaging plane IMA3. According to paragraphs 1 to 9 of [Embodiment], wherein: the second lens L32 is a biconcave lens, the object side S35 is a concave surface, and the object side S35 is an aspheric surface; the fourth lens L34, the object side S310 and the image side S311 are both It is an aspherical surface; the fifth lens L35 is a meniscus lens, and its image side S313 is a convex surface; the sixth lens L36 is a meniscus lens, and its object side S33 is a convex surface, and its image side S34 is a concave surface, and its image side S34 is a non-convex surface. Spherical surface; the object side S314 and the image side S315 of the filter OF3 are both planes; using the above-mentioned lens, aperture ST3 and the design that satisfies at least one of the conditions (1) to (6), the wide-angle lens 3 can be effectively shortened The total length of the lens, the effective reduction of the aperture value, the effective reduction of the lens weight, the effective improvement of the resolution, the effective correction of aberration, and the effective correction of chromatic aberration.

表七為第5圖中廣角鏡頭3之各透鏡之相關參數表。 Table 7 is a table of relevant parameters of each lens of the wide-angle lens 3 in Fig. 5 .

Figure 108132769-A0101-12-0014-16
Figure 108132769-A0101-12-0014-16

表七中非球面透鏡之非球面表面凹陷度z之定義，與第一實施例中表一之非球面透鏡之非球面表面凹陷度z之定義相同，在此皆不加以贅述。 The definition of the aspherical surface concavity z of the aspherical lens in Table 7 is the same as the definition of the aspherical surface concavity z of the aspherical lens in Table 1 in the first embodiment, and will not be repeated here.

表八為表七中非球面透鏡之非球面表面之相關參數表，其中k為圓錐係數(Conic Constant)、A~C為非球面係數。 Table 8 is a table of relevant parameters of the aspheric surface of the aspheric lens in Table 7, where k is the Conic Constant, and A~C are the aspheric coefficients.

Figure 108132769-A0101-12-0014-26
Figure 108132769-A0101-12-0014-26
Figure 108132769-A0101-12-0015-27
Figure 108132769-A0101-12-0015-27

表九為第三實施例之廣角鏡頭3之相關參數值及其對應條件(1)至條件(6)之計算值，由表九可知，第三實施例之廣角鏡頭3皆能滿足條件(1)至條件(6)之要求。 Table 9 shows the relevant parameter values of the wide-angle lens 3 of the third embodiment and the calculated values of the corresponding conditions (1) to (6). It can be seen from Table 9 that the wide-angle lens 3 of the third embodiment can all satisfy the conditions (1) to (6). the requirements of condition (6).

Figure 108132769-A0101-12-0015-28
Figure 108132769-A0101-12-0015-28

另外，第三實施例之廣角鏡頭3的光學性能也可達到要求，由第6A圖可看出，第三實施例之廣角鏡頭3其縱向像差介於-0.001mm至0.01mm之間。由第6B圖可看出，第三實施例之廣角鏡頭3其場曲介於-0.015mm至0.005mm之間。由第6C圖可看出，第三實施例之廣角鏡頭3其畸變介於-14%至0%之間。 In addition, the optical performance of the wide-angle lens 3 of the third embodiment can also meet the requirements. It can be seen from FIG. 6A that the longitudinal aberration of the wide-angle lens 3 of the third embodiment is between -0.001mm and 0.01mm. It can be seen from FIG. 6B that the field curvature of the wide-angle lens 3 of the third embodiment is between -0.015 mm and 0.005 mm. It can be seen from FIG. 6C that the distortion of the wide-angle lens 3 of the third embodiment is between -14% and 0%.

顯見第三實施例之廣角鏡頭3之縱向像差、場曲、畸變都能被有效修正，從而得到較佳的光學性能。 It is obvious that the longitudinal aberration, field curvature, and distortion of the wide-angle lens 3 of the third embodiment can be effectively corrected, thereby obtaining better optical performance.

請參閱第7圖，第7圖係依據本發明之廣角鏡頭之第四實施例的透鏡配置與光路示意圖。廣角鏡頭4沿著一光軸OA4從一物側至一 像側依序包括一前透鏡群LG4F、一光圈ST4、一後透鏡群LG4R及一濾光片OF4，前透鏡群LG4F包括一第一透鏡L41、一第六透鏡L46及一第二透鏡L42，後透鏡群LG4R包括一第三透鏡L43、一第四透鏡L44及一第五透鏡L45。成像時，來自物側之光線最後成像於一成像面IMA4上。根據【實施方式】第一至九段落，其中：第二透鏡L42為雙凹透鏡，其物側面S45為凹面，物側面S45為為球面表面；第四透鏡L44，其物側面S410與像側面S411皆為球面表面；第五透鏡L45為雙凹透鏡，其像側面S413為凹面；第六透鏡L46為雙凸透鏡，其物側面S43為凸面，像側面S44為凸面，像側面S44為球面表面；濾光片OF4其物側面S414與像側面S415皆為平面；利用上述透鏡、光圈ST4及至少滿足條件(1)至條件(6)其中一條件之設計，使得廣角鏡頭4能有效的縮短鏡頭總長度、有效的縮小光圈值、有效的減輕鏡頭重量、有效的提升解析度、有效的修正像差、有效的修正色差。 Please refer to FIG. 7. FIG. 7 is a schematic diagram of the lens configuration and optical path of the fourth embodiment of the wide-angle lens according to the present invention. The wide-angle lens 4 includes a front lens group LG4 F , an aperture ST4, a rear lens group LG4 R , and a filter OF4 in sequence from an object side to an image side along an optical axis OA4, and the front lens group LG4 F includes a The first lens L41, a sixth lens L46 and a second lens L42, the rear lens group LG4 R includes a third lens L43, a fourth lens L44 and a fifth lens L45. During imaging, the light from the object side is finally imaged on an imaging plane IMA4. According to paragraphs 1 to 9 of [Embodiment], wherein: the second lens L42 is a biconcave lens, the object side S45 is a concave surface, and the object side S45 is a spherical surface; the fourth lens L44, the object side S410 and the image side S411 are both be a spherical surface; the fifth lens L45 is a double concave lens, and its image side S413 is a concave surface; the sixth lens L46 is a biconvex lens, and its object side S43 is a convex surface, and the image side S44 is a convex surface, and the image side S44 is a spherical surface; The object side S414 and the image side S415 of OF4 are both planes; using the above-mentioned lens, aperture ST4 and the design that satisfies at least one of the conditions (1) to (6), the wide-angle lens 4 can effectively shorten the total length of the lens, effectively Reduce the aperture value, effectively reduce the weight of the lens, effectively improve the resolution, effectively correct the aberration, and effectively correct the chromatic aberration.

表十為第7圖中廣角鏡頭4之各透鏡之相關參數表。 Table 10 is a table of relevant parameters of each lens of the wide-angle lens 4 in Fig. 7 .

Figure 108132769-A0101-12-0016-29
Figure 108132769-A0101-12-0016-29
Figure 108132769-A0101-12-0017-30
Figure 108132769-A0101-12-0017-30

表十中非球面透鏡之非球面表面凹陷度z之定義，與第一實施例中表一之非球面透鏡之非球面表面凹陷度z之定義相同，在此皆不加以贅述。 The definition of the aspherical surface concavity z of the aspherical lens in Table 10 is the same as the definition of the aspherical surface concavity z of the aspherical lens in Table 1 in the first embodiment, and will not be repeated here.

表十一為表十中非球面透鏡之非球面表面之相關參數表，其中k為圓錐係數(Conic Constant)、A~C為非球面係數。 Table 11 is a table of relevant parameters of the aspherical surface of the aspherical lens in Table 10, where k is the Conic Constant, and A~C are the aspherical coefficients.

Figure 108132769-A0101-12-0017-31
Figure 108132769-A0101-12-0017-31

表十二為第四實施例之廣角鏡頭4之相關參數值及其對應條件(1)至條件(6)之計算值，由表十二可知，第四實施例之廣角鏡頭4 皆能滿足條件(1)至條件(6)之要求。 Table 12 shows the relevant parameter values of the wide-angle lens 4 of the fourth embodiment and the calculated values of the corresponding conditions (1) to (6). It can be seen from Table 12 that the wide-angle lens 4 of the fourth embodiment All can meet the requirements of conditions (1) to (6).

Figure 108132769-A0101-12-0018-32
Figure 108132769-A0101-12-0018-32

另外，第四實施例之廣角鏡頭4的光學性能也可達到要求，由第8A圖可看出，第四實施例之廣角鏡頭4其縱向像差介於-0.002mm至0.002mm之間。由第8B圖可看出，第四實施例之廣角鏡頭4其場曲介於-0.02mm至0.005mm之間。由第8C圖可看出，第四實施例之廣角鏡頭4其畸變介於-16%至1%之間。 In addition, the optical performance of the wide-angle lens 4 of the fourth embodiment can also meet the requirements. It can be seen from FIG. 8A that the longitudinal aberration of the wide-angle lens 4 of the fourth embodiment is between -0.002mm and 0.002mm. It can be seen from FIG. 8B that the field curvature of the wide-angle lens 4 of the fourth embodiment is between -0.02 mm and 0.005 mm. It can be seen from FIG. 8C that the distortion of the wide-angle lens 4 of the fourth embodiment is between -16% and 1%.

顯見第四實施例之廣角鏡頭4之縱向像差、場曲、畸變都能被有效修正，從而得到較佳的光學性能。 It is obvious that the longitudinal aberration, field curvature, and distortion of the wide-angle lens 4 of the fourth embodiment can be effectively corrected, thereby obtaining better optical performance.

請參閱第9圖，第9圖係依據本發明之廣角鏡頭之第五實施例的透鏡配置與光路示意圖。廣角鏡頭5沿著一光軸OA5從一物側至一像側依序包括一前透鏡群LG5F、一光圈ST5、一後透鏡群LG5R及一濾光片OF5，前透鏡群LG5F包括一第一透鏡L51及一第二透鏡L52，後透鏡群LG5R包括一第三透鏡L53、一第四透鏡L54及一第五透鏡L55。成像時，來自物側之光線最後成像於一成像面IMA5上。根據【實施方式】第一至九段落，其中：第二透鏡L52為彎月型透鏡，其物側面S53為凸面，物側面S53為非球面表面；第四透鏡L54，其物側面S58與像側面S59皆為球面表面；第五透鏡L55為彎月型透鏡，其像側面S511為凸面； 濾光片OF5其物側面S512與像側面S513皆為平面；利用上述透鏡、光圈ST5及至少滿足條件(1)至條件(6)其中一條件之設計，使得廣角鏡頭5能有效的縮短鏡頭總長度、有效的縮小光圈值、有效的減輕鏡頭重量、有效的提升解析度、有效的修正像差、有效的修正色差。 Please refer to FIG. 9. FIG. 9 is a schematic diagram of the lens configuration and optical path of the fifth embodiment of the wide-angle lens according to the present invention. The wide-angle lens 5 sequentially includes a front lens group LG5 F , an aperture ST5, a rear lens group LG5 R and a filter OF5 along an optical axis OA5 from an object side to an image side, and the front lens group LG5 F includes a The first lens L51 and a second lens L52, the rear lens group LG5 R includes a third lens L53, a fourth lens L54 and a fifth lens L55. During imaging, the light from the object side is finally imaged on an imaging plane IMA5. According to paragraphs 1 to 9 of [Embodiment], wherein: the second lens L52 is a meniscus lens, the object side S53 is a convex surface, and the object side S53 is an aspheric surface; the fourth lens L54, the object side S58 and the image side are S59 is all spherical surface; The fifth lens L55 is a meniscus lens, and its image side S511 is a convex surface; Its object side S512 and image side S513 of filter OF5 are all planes; Utilize the above-mentioned lens, aperture ST5 and at least meet the conditions ( 1) To the design of one of the conditions (6), the wide-angle lens 5 can effectively shorten the total length of the lens, effectively reduce the aperture value, effectively reduce the weight of the lens, effectively improve the resolution, effectively correct aberrations, and effectively Correct chromatic aberration.

表十三為第9圖中廣角鏡頭5之各透鏡之相關參數表。 Table 13 is a table of relevant parameters of each lens of the wide-angle lens 5 in Fig. 9 .

Figure 108132769-A0101-12-0019-33
Figure 108132769-A0101-12-0019-33

表十三中非球面透鏡之非球面表面凹陷度z之定義，與第一實施例中表一之非球面透鏡之非球面表面凹陷度z之定義相同，在此皆不加以贅述。 The definition of the aspherical surface concavity z of the aspherical lens in Table 13 is the same as the definition of the aspherical surface concavity z of the aspherical lens in Table 1 in the first embodiment, and will not be repeated here.

表十四為表十三中非球面透鏡之非球面表面之相關參數 表，其中k為圓錐係數(Conic Constant)、A~C為非球面係數。 Table 14 shows the relevant parameters of the aspheric surfaces of the aspheric lenses in Table 13 Table, where k is the Conic Constant, and A~C are the aspheric coefficients.

Figure 108132769-A0101-12-0020-34
Figure 108132769-A0101-12-0020-34

表十五為第五實施例之廣角鏡頭5之相關參數值及其對應條件(1)至條件(6)之計算值，由表十五可知，第五實施例之廣角鏡頭5皆能滿足條件(1)至條件(6)之要求。 Table 15 shows the relevant parameter values of the wide-angle lens 5 of the fifth embodiment and the calculated values of the corresponding conditions (1) to (6). It can be seen from Table 15 that the wide-angle lens 5 of the fifth embodiment can meet the conditions (1). ) to the requirements of condition (6).

Figure 108132769-A0101-12-0020-35
Figure 108132769-A0101-12-0020-35

另外，第五實施例之廣角鏡頭5的光學性能也可達到要求，由第10A圖可看出，第五實施例之廣角鏡頭5其縱向像差介於-0.005mm至0.025mm之間。由第10B圖可看出，第五實施例之廣角鏡頭5其場曲介於-0.025mm至0.005mm之間。由第10C圖可看出，第五實施例之廣角鏡頭5其畸變介於-14%至1%之間。 In addition, the optical performance of the wide-angle lens 5 of the fifth embodiment can also meet the requirements. It can be seen from FIG. 10A that the longitudinal aberration of the wide-angle lens 5 of the fifth embodiment is between -0.005mm and 0.025mm. It can be seen from FIG. 10B that the field curvature of the wide-angle lens 5 of the fifth embodiment is between -0.025mm and 0.005mm. It can be seen from FIG. 10C that the distortion of the wide-angle lens 5 of the fifth embodiment is between -14% and 1%.

顯見第五實施例之廣角鏡頭5之縱向像差、場曲、畸變都能被有效修正，從而得到較佳的光學性能。 It is obvious that the longitudinal aberration, field curvature, and distortion of the wide-angle lens 5 of the fifth embodiment can be effectively corrected, thereby obtaining better optical performance.

雖然本發明已以實施方式揭露如上，然其並非用以限定本發明，任何熟悉此技藝者，在不脫離本發明的精神和範圍內，當可作各種 的更動與潤飾，因此本發明的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various Therefore, the scope of protection of the present invention should be determined by the scope of the appended patent application.

5‧‧‧廣角鏡頭 5‧‧‧Wide-angle lens

L51‧‧‧第一透鏡 L51‧‧‧First Lens

L52‧‧‧第二透鏡 L52‧‧‧Second Lens

L53‧‧‧第三透鏡 L53‧‧‧Third lens

L54‧‧‧第四透鏡 L54‧‧‧fourth lens

L55‧‧‧第五透鏡 L55‧‧‧Fifth Lens

ST5‧‧‧光圈 ST5‧‧‧Aperture

OA5‧‧‧光軸 OA5‧‧‧optical axis

OF5‧‧‧濾光片 OF5‧‧‧Filter

IMA5‧‧‧成像面 IMA5‧‧‧Imaging Surface

S51‧‧‧第一透鏡物側面 S51‧‧‧Objective side of the first lens

S52‧‧‧第一透鏡像側面 S52‧‧‧First lens image side

S53‧‧‧第二透鏡物側面 S53‧‧‧Objective side of the second lens

S54‧‧‧第二透鏡像側面 S54‧‧‧Second lens image side

S55‧‧‧光圈面 S55‧‧‧Aperture surface

S56‧‧‧第三透鏡物側面 S56‧‧‧Object side of the third lens

S57‧‧‧第三透鏡像側面 S57‧‧‧The third lens image side

S58‧‧‧第四透鏡物側面 S58‧‧‧Objective side of the fourth lens

S59‧‧‧第四透鏡像側面 S59‧‧‧4th lens image side

S510‧‧‧第五透鏡物側面 S510‧‧‧Objective side of fifth lens

S511‧‧‧第五透鏡像側面 S511‧‧‧5th lens image side

S512‧‧‧濾光片物側面 S512‧‧‧Filter Object Side

S513‧‧‧濾光片像側面 S513‧‧‧Filter Image Side

Claims (9)

一種廣角鏡頭，包括：一前透鏡群；以及一後透鏡群；其中該前透鏡群包括一第一透鏡以及一第二透鏡，該第一透鏡為彎月型透鏡具有負屈光力，該第二透鏡具有負屈光力且包括一凹面朝向一像側；其中該後透鏡群包括一第三透鏡、一第四透鏡以及一第五透鏡，該第三透鏡具有正屈光力，該第四透鏡具有正屈光力，該第五透鏡具有負屈光力且包括一凹面朝向一物側；其中該第一透鏡、該第二透鏡、該第三透鏡、該第四透鏡以及該第五透鏡沿著一光軸從該物側至該像側依序排列；其中該廣角鏡頭滿足以下條件：-11.2mm
Figure 108132769-A0305-02-0026-25
f+f1
Figure 108132769-A0305-02-0026-26
-5.3mm；3.1
Figure 108132769-A0305-02-0026-27
TTL/TG
Figure 108132769-A0305-02-0026-28
6.4；其中，f為該廣角鏡頭之一有效焦距，f1為該第一透鏡之一有效焦距，TTL為該第一透鏡之一物側面至一成像面於該光軸上之一間距，TG為一第二靠近該像側的透鏡於該光軸上之一厚度。 A wide-angle lens includes: a front lens group; and a rear lens group; wherein the front lens group includes a first lens and a second lens, the first lens is a meniscus lens with negative refractive power, and the second lens has Negative refractive power and includes a concave surface facing an image side; wherein the rear lens group includes a third lens, a fourth lens and a fifth lens, the third lens has positive refractive power, the fourth lens has positive refractive power, and the first lens has a positive refractive power. Five lenses have negative refractive power and include a concave surface facing an object side; wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are along an optical axis from the object side to the The image sides are arranged in order; where the wide-angle lens meets the following conditions: -11.2mm
Figure 108132769-A0305-02-0026-25
f+f 1
Figure 108132769-A0305-02-0026-26
-5.3mm; 3.1
Figure 108132769-A0305-02-0026-27
TTL/ TG
Figure 108132769-A0305-02-0026-28
6.4; Wherein, f is an effective focal length of the wide-angle lens, f 1 is an effective focal length of the first lens, TTL is a distance from an object side of the first lens to an imaging plane on the optical axis, T G is a thickness of a second lens close to the image side on the optical axis. 如申請專利範圍第1項所述之廣角鏡頭，其中該前透鏡群更包括一第六透鏡，設置於該第一透鏡與該第二透鏡之間。 The wide-angle lens of claim 1, wherein the front lens group further includes a sixth lens disposed between the first lens and the second lens. 如申請專利範圍第2項所述之廣角鏡頭，其中該第六透鏡為彎月型透鏡且包括一凸面朝向該物側以及一凹面朝向該像側。 The wide-angle lens of claim 2, wherein the sixth lens is a meniscus lens and includes a convex surface facing the object side and a concave surface facing the image side. 如申請專利範圍第2項所述之廣角鏡頭，其中該第六透鏡為彎月型透鏡且包括一凹面朝向該物側以及一凸面朝向該像側。 The wide-angle lens of claim 2, wherein the sixth lens is a meniscus lens and includes a concave surface facing the object side and a convex surface facing the image side. 如申請專利範圍第2項所述之廣角鏡頭，其中該第六透鏡為雙凸透鏡且包括一凸面朝向該物側以及另一凸面朝向該像側。 The wide-angle lens of claim 2, wherein the sixth lens is a biconvex lens and includes a convex surface facing the object side and another convex surface facing the image side. 如申請專利範圍第1項所述之廣角鏡頭，其中：該第一透鏡包括一凸面朝向該物側以及一凹面朝向該像側；該第三透鏡包括一凸面朝向該物側以及另一凸面朝向該像側；以及該第四透鏡包括一凸面朝向該物側以及另一凸面朝向該像側。 The wide-angle lens of claim 1, wherein: the first lens includes a convex surface facing the object side and a concave surface facing the image side; the third lens includes a convex surface facing the object side and another convex surface facing the image side an image side; and the fourth lens includes a convex surface facing the object side and another convex surface facing the image side. 如申請專利範圍第6項所述之廣角鏡頭，其中該廣角鏡頭滿足以下至少一條件：-4.2
Figure 108132769-A0305-02-0027-29
(fH+f1)/f
Figure 108132769-A0305-02-0027-30
-3；70
Figure 108132769-A0305-02-0027-31
VdG+VdH
Figure 108132769-A0305-02-0027-32
110；-13mm
Figure 108132769-A0305-02-0027-33
ff-f
Figure 108132769-A0305-02-0027-34
-8mm；13.6mm
Figure 108132769-A0305-02-0027-35
fK-f1
Figure 108132769-A0305-02-0027-36
25.2mm；其中，fH為一最靠近該像側的透鏡之一有效焦距，f為該廣角鏡頭之一有效焦距，VdH為一最靠近該像側的透鏡之一阿貝係數，VdG為一第二靠近該像側的透鏡之一阿貝係數，f1為該第一透鏡之一有效焦距，ff為該前透鏡群之一有效焦距，fK為一第三靠近該像側的透鏡之一有效焦距。 The wide-angle lens as described in item 6 of the scope of application, wherein the wide-angle lens satisfies at least one of the following conditions: -4.2
Figure 108132769-A0305-02-0027-29
(f H +f 1 )/f
Figure 108132769-A0305-02-0027-30
-3;70
Figure 108132769-A0305-02-0027-31
Vd G +Vd H
Figure 108132769-A0305-02-0027-32
110;-13mm
Figure 108132769-A0305-02-0027-33
f f -f
Figure 108132769-A0305-02-0027-34
-8mm; 13.6mm
Figure 108132769-A0305-02-0027-35
f K -f 1
Figure 108132769-A0305-02-0027-36
25.2mm; where f H is an effective focal length of a lens closest to the image side, f is an effective focal length of the wide-angle lens, Vd H is one of the Abbe coefficients of a lens closest to the image side, and Vd G is An Abbe coefficient of a second lens close to the image side, f 1 is an effective focal length of the first lens, f f is an effective focal length of the front lens group, f K is a third lens close to the image side The effective focal length of one of the lenses. 如申請專利範圍第1項所述之廣角鏡頭，其中該廣角鏡頭滿足以下至少一條件：-4.2
Figure 108132769-A0305-02-0027-37
(fH+f1)/f
Figure 108132769-A0305-02-0027-38
-3；70
Figure 108132769-A0305-02-0027-39
VdG+VdH
Figure 108132769-A0305-02-0027-40
110； -13mm
Figure 108132769-A0305-02-0028-41
ff-f
Figure 108132769-A0305-02-0028-42
-8mm；13.6mm
Figure 108132769-A0305-02-0028-43
fK-f1
Figure 108132769-A0305-02-0028-44
25.2mm；其中，f1為該第一透鏡之一有效焦距，f為該廣角鏡頭之一有效焦距，fH為一最靠近該像側的透鏡之一有效焦距，VdH為一最靠近該像側的透鏡之一阿貝係數，VdG為一第二靠近該像側的透鏡之一阿貝係數，ff為該前透鏡群之一有效焦距，fK為一第三靠近該像側的透鏡之一有效焦距。 The wide-angle lens as described in claim 1, wherein the wide-angle lens satisfies at least one of the following conditions: -4.2
Figure 108132769-A0305-02-0027-37
(f H +f 1 )/f
Figure 108132769-A0305-02-0027-38
-3;70
Figure 108132769-A0305-02-0027-39
Vd G +Vd H
Figure 108132769-A0305-02-0027-40
110; -13mm
Figure 108132769-A0305-02-0028-41
f f -f
Figure 108132769-A0305-02-0028-42
-8mm; 13.6mm
Figure 108132769-A0305-02-0028-43
f K -f 1
Figure 108132769-A0305-02-0028-44
25.2mm; wherein, f 1 is an effective focal length of the first lens, f is an effective focal length of the wide-angle lens, f H is an effective focal length of a lens closest to the image side, and Vd H is a lens closest to the image. One of the Abbe coefficients of the lens on the side, Vd G is one of the Abbe coefficients of a second lens close to the image side, f f is an effective focal length of the front lens group, and f K is a third lens close to the image side. The effective focal length of one of the lenses. 如申請專利範圍第1項所述之廣角鏡頭，其更包括一光圈，設置於該前透鏡群與該後透鏡群之間。 The wide-angle lens of claim 1, further comprising an aperture, disposed between the front lens group and the rear lens group.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM529174U (en) * 2016-04-20 2016-09-21 Kinko Optical Co Ltd Six-piece wide-angle lens module
TW201710732A (en) * 2015-09-03 2017-03-16 先進光電科技股份有限公司 Optical image capturing system
US20170219802A1 (en) * 2016-01-29 2017-08-03 Largan Precision Co., Ltd. Photographing optical lens assembly, image capturing unit and electronic device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201710732A (en) * 2015-09-03 2017-03-16 先進光電科技股份有限公司 Optical image capturing system
US20170219802A1 (en) * 2016-01-29 2017-08-03 Largan Precision Co., Ltd. Photographing optical lens assembly, image capturing unit and electronic device
TWM529174U (en) * 2016-04-20 2016-09-21 Kinko Optical Co Ltd Six-piece wide-angle lens module

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