KR20080099031A - Compact imaging lens - Google Patents

Compact imaging lens Download PDF

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Publication number
KR20080099031A
KR20080099031A KR1020070044619A KR20070044619A KR20080099031A KR 20080099031 A KR20080099031 A KR 20080099031A KR 1020070044619 A KR1020070044619 A KR 1020070044619A KR 20070044619 A KR20070044619 A KR 20070044619A KR 20080099031 A KR20080099031 A KR 20080099031A
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South Korea
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lens
focal length
refractive power
plastic material
optical system
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KR1020070044619A
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Korean (ko)
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김용남
김성우
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파워옵틱스 주식회사
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Publication of KR20080099031A publication Critical patent/KR20080099031A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only
    • G02B9/14—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only arranged + - +
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0035—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having three lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/0095—Relay lenses or rod lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0043—Inhomogeneous or irregular arrays, e.g. varying shape, size, height
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

A compact Imaging Lens is provided to have excellent distortion correction and resolution since the device is composed of a little number of lenses and optical full length is short. Form an object, an iris, an aspherical lens with meniscus shape, which has the definition refractive power facing the object and is made of plastic material are arranged in order. A second lens(L2) made of plastic material has the negative refractive power and aspherical lens with biconcave form. A third lens(L3) has the positive refractive power and aspherical lens, made of plastic material, of which upper side is convex.

Description

소형 촬영 렌즈{Compact Imaging Lens}Compact Imaging Lens {Compact Imaging Lens}

도 1 : 실시예1 의 구성도1: Configuration diagram of Example 1

도 2 : 실시예1 의 수차도2: Aberration diagram of Example 1

도 3 : 실시예2 의 구성도3: Configuration of Example 2

도 4 : 실시예2 의 수차도4: Aberration diagram of Example 2

도 5 : 실시예3 의 구성도5: Configuration of Example 3

도 6 : 실시예3 의 수차도6: Aberration diagram of Example 3

도 7 : 실시예4 의 구성도7 is a configuration diagram of Example 4

도 8 : 실시예4 의 수차도8: Aberration diagram of Example 4

표 1 : 실시예1 의 광학데이타Table 1: Optical data of Example 1

표 2 : 실시예2 의 광학데이타Table 2: Optical data of Example 2

표 3 : 실시예3 의 광학데이타Table 3: Optical data of Example 3

표 4 : 실시예4 의 광학데이타Table 4: Optical data of Example 4

표 5 : 실시예1 의 비구면데이타Table 5: Aspherical data of Example 1

표 6 : 실시예2 의 비구면데이타Table 6: Aspherical data of Example 2

표 7 : 실시예3 의 비구면데이타Table 7: Aspherical data of Example 3

표 8 : 실시예4 의 비구면데이타Table 8: Aspherical data of Example 4

표 9 : 조건식에 따른 실시예의 계산 값Table 9: Calculated Values of Examples According to Conditional Formulas

조건식 1 : 제1렌즈와 전체광학계의 초점거리 비(比)Condition 1: The focal length ratio between the first lens and the whole optical system

조건식 2 : 제2렌즈의 아베수(Abbe Number)에 대한 제한 식Condition 2: The limiting expression for the Abbe number of the second lens

조건식 3 : 제2렌즈와 제3렌즈의 초점거리 비(比)Condition 3: The focal length ratio of the second lens and the third lens

조건식 4 : 제3렌즈와 전체광학계의 초점거리 비(比)Condition 4: The focal length ratio between the third lens and the whole optical system

조건식 5 : 제1렌즈 제1면에서 제3렌즈 제2면까지 거리와 전체광학계의 초점거리 비에 대한 제한식Condition 5: The limiting formula for the ratio of the distance from the first lens first surface to the third lens second surface and the focal length of the whole optical system

수학식 1 : 비구면 방정식Equation 1: Aspheric Equation

이 발명은 휴대 전화나 휴대 단말기에 촬영 렌즈로 들어가서 카메라의 기능을 갖추게 하거나 디지털 카메라에 적용하여서 사용이 가능하다. 휴대 전화나 휴대 단말기에 촬영 렌즈로 들어가는 종래의 촬영 렌즈에 대한 기술들은 다음과 같은 것이 있다.The present invention can be used to enter a shooting lens into a mobile phone or a mobile terminal to have a camera function or to be applied to a digital camera. [0003] Techniques for a conventional photographing lens that enters a photographing lens in a mobile phone or a mobile terminal include the following.

(1) KR 공개특허 10-2006-0044514 (1) KR Publication No. 10-2006-0044514

(2) KR 공개특허 10-2006-0044602(2) KR Patent Publication 10-2006-0044602

(3) US 6,795,253,B2 (Sep.21.2004)(3) US 6,795,253, B2 (Sep. 21.2004)

(4) US 6,985,307,B2 (Jan.10.2006)(4) US 6,985,307, B2 (Jan. 10.2006)

(5) US 6.989,947,B2 (Jan.10.2006)(5) US 6.989,947, B2 (Jan. 10.2006)

(6) US 7,031,079,B2 (Apr.18.2006)(6) US 7,031,079, B2 (Apr. 18.2006)

(7) US 6.980,372,B1 (Dec.27.2005)(7) US 6.980,372, B1 (Dec. 27.2005)

(8) 일본공개특허 2005-345919 (2005.12.15)(8) Japanese Patent Laid-Open No. 2005-345919 (2005.12.15)

(9) 일본공개특허 2004-240063 (2004. 8.26)(9) Japanese Laid-Open Patent 2004-240063 (August 26, 2004)

(10)일본공개특허 2004-251958 (2004. 9. 9)(10) Japanese Laid-Open Patent 2004-251958 (September 9, 2004)

상기 종래의 기술 (1)~ (6)은 굴절력의 배열이 양의 굴절력의 제1렌즈, 조리개, 양의 굴절력의 제2렌즈, 음의 굴절력의 제3렌즈로 구성되어 있다. 이 기술은 제조민감도가 낮아 양산성은 양호하나, 색수차 발생으로 인한 최고성능이 떨어지고, 광학계의 전장이 최고상면높이 보다 길거나 같게 된다. 종래의 기술 (7)은 굴절력의 배열이 양의 굴절력의 제1렌즈, 조리개, 음의 굴절력을 갖는 제2렌즈와 제3렌즈로 구성되어 제수차 보정은 양호하나, 조리개 위치로 인한 상면입사높이에 따른 입사각 (Chief Ray Angle)이 커지는 단점과 제조민감도가 큰 단점이 있다. 종래의 기술 (8)~(10)은 굴절력의 배열이 조리개, 양의 굴절력의 제1렌즈, 음의 굴절력을 갖는 제2렌즈, 양의 굴절력을 갖는 제3렌즈로 구성되어 있어, 상면입사 높이에 따른 입사각을 줄일 수 있으나, 제조민감도가 큰 단점이 있다.In the prior arts (1) to (6), the array of refractive powers is composed of a first lens of positive refractive power, an aperture, a second lens of positive refractive power, and a third lens of negative refractive power. This technology has good manufacturing productivity due to low sensitivity to manufacturing, but the highest performance due to chromatic aberration is inferior, and the overall length of the optical system is longer than or equal to the height of the top surface. The conventional technique (7) is that the arrangement of the refractive power is composed of the first lens of the positive refractive power, the aperture, the second lens and the third lens having the negative refractive power, the correction of the aberration is good, but the image incident height due to the aperture position There are disadvantages in that the angle of incidence (Chief Ray Angle) increases and manufacturing sensitivity is large. The prior arts (8) to (10) have an array of refractive powers comprising an aperture, a first lens of positive refractive power, a second lens having negative refractive power, and a third lens having positive refractive power, so that the image incident height is high. The incident angle can be reduced, but manufacturing sensitivity is large.

이 발명에서는 촬영 렌즈가 휴대 전화 및 휴대 단말기에 들어가서 카메라 기능을 발휘하도록 소형화, 고성능화에 초점을 맞추었다. 소형화를 이루기 위해서 조리개를 가장 물체측으로 위치했으며 이에 따른 성능저하를 막기 위해서 제1렌즈, 제1렌즈, 제3렌즈의 양면을 비구면으로 구성하였다. 색수차 보정을 최대로 하기 위 하여 제2렌즈의 아베수가 낮은 합성수지 소재를 사용하여 고성능을 유지 하였고, 제조 민감도를 낮추기 위하여 제2렌즈의 광축상의 곡율을 양오목 형태로 하여 제2렌즈의 제1면으로 입사하는 광선의 입사각과 제2면에서 출사하는 광선의 입사각의 차이를 줄여 제조민감도를 감소시키고, 광학전장이 짧은 소형 광학계를 구성하였다.In the present invention, the focus is on miniaturization and high performance so that a photographing lens enters a mobile phone and a mobile terminal to perform a camera function. In order to achieve miniaturization, the diaphragm was positioned at the object side most, and both surfaces of the first lens, the first lens, and the third lens were composed of aspherical surfaces to prevent performance degradation. In order to maximize the chromatic aberration correction, high performance was maintained by using synthetic resin material with low Abbe number of the second lens, and the curvature on the optical axis of the second lens was in the form of a concave in order to reduce the manufacturing sensitivity. The manufacturing sensitivity is reduced by reducing the difference between the incident angle of the incident light and the incident light of the light exiting from the second surface, thereby constructing a compact optical system having a short optical field.

상기 목적을 달성하기 위해서 이 발명의 구성은 물체측으로부터 순차적으로, 조리개, 정의 굴절력을 갖고 볼록면이 물체측을 향하는 메니스커스 형상의 플라스틱소재의 양면 비구면을 사용한 제1렌즈, 부의 굴절력을 갖고 양오목 형태의 양면 비구면을 사용한 플라스틱 소재의 제2렌즈, 정의 굴절력을 갖고 상측의 면이 볼록인 메니스커스 형태의 양면 비구면을 사용한 플라스틱 소재의 제3렌즈로 구성된다. In order to achieve the above object, the configuration of the present invention has a first lens using a double-sided aspherical surface of a meniscus-shaped plastic material having a diaphragm, a positive refractive power and a convex surface facing the object side, and a negative refractive power, sequentially from the object side. And a second lens of plastic material using a double-sided aspherical surface in a concave shape, and a third lens of plastic material using a double-sided aspheric surface in a meniscus shape having positive refractive power and convex on the image side.

이 광학계를 구성하는 렌즈면의 곡율반경은 광축상에서 제2렌즈의 제1면의 곡율반경이 부(-)의 값을 갖고, 이를 제외한 모든면의 곡율반경은 근축상에서 정(+)의 값을 갖는 것을 특징으로 하며 다음의 조건을 만족한다.The radius of curvature of the lens surface constituting the optical system has a negative value of the radius of curvature of the first surface of the second lens on the optical axis, and the radius of curvature of all the surfaces except this has a positive value on the paraxial axis. It is characterized by having the following conditions.

Figure 112007034203182-PAT00001
Figure 112007034203182-PAT00001

여기에서 f1은 제1렌즈(L1)의 근축초점거리, f는 광학계 전체의 근축초점거리Here, f1 is the paraxial focal length of the first lens L1, and f is the paraxial focal length of the whole optical system.

또한 본 발명은 아래의 조건을 만족하는 것을 특징으로 한다.In addition, the present invention is characterized by satisfying the following conditions.

Figure 112007034203182-PAT00002
Figure 112007034203182-PAT00002

V2는 제2렌즈의 아베수(Abbe Number)V2 is the Abbe Number of the Second Lens

또한 본 발명은 아래의 조건을 만족하는 것을 특징으로 한다.In addition, the present invention is characterized by satisfying the following conditions.

Figure 112007034203182-PAT00003
Figure 112007034203182-PAT00003

f2는 제2렌즈(L2)는 제2렌즈 근축초점거리, f3는 제3렌즈(L3)의 근축초점거리f2 is the paraxial focal length of the second lens (L2), f3 is the paraxial focal length of the third lens (L3)

또한 본 발명은 아래의 조건을 만족하는 것을 특징으로 한다.In addition, the present invention is characterized by satisfying the following conditions.

Figure 112007034203182-PAT00004
Figure 112007034203182-PAT00004

f3는 제3렌즈(L3)의 근축초점거리, f는 광학계 전체의 근축초점거리f3 is the paraxial focal length of the third lens L3, f is the paraxial focal length of the whole optical system

또한 본 발명은 아래의 조건을 만족하는 것을 특징으로 한다.In addition, the present invention is characterized by satisfying the following conditions.

Figure 112007034203182-PAT00005
Figure 112007034203182-PAT00005

d는 조리개(STOP)에서 제3렌즈(L3)의 제2면까지의 거리d is the distance from the stop STOP to the second surface of the third lens L3

이하 발명의 작용은 다음과 같다.The action of the invention is as follows.

물체측에서부터 상면 높이에 따른 주광선의 입사각을 줄이기 위하여 조리개를 물체측에서 가장 가까운 곳에 배치하고, 볼록면이 물체측을 향하고 메니스커스 형상의 제수차 보정이 용이한 양면 비구면의 양의 굴절력을 가진 제1렌즈는 상면높이에 따른 입사각을 조절하고 광학계 전체의 가장 큰 민감도를 가지게 된다. 양면오목형상의 양면 비구면으로 구성된 제2렌즈는 광학전장을 짧게하기 위하여 음의 굴절력을 갖고, 색수차 보정을 위하여 분산계수가 20~30에 해당되는 플라스틱소재로 구성되며 제2렌즈(L2)의 광축상의 곡율을 양오목 형태로 하여 제2렌즈의 제1면으로 입사하는 광선의 입사각과 제2면에서 출사하는 광선의 입사각의 차이를 줄여 제조민감도를 감소시킨다.In order to reduce the angle of incidence of the chief rays of light from the object side to the height of the top surface, the diaphragm is placed closest to the object side. The first lens adjusts the angle of incidence according to the height of the image and has the greatest sensitivity of the entire optical system. The second lens having a double-sided concave-shaped double-sided aspherical surface has a negative refractive power to shorten the optical field, and is composed of a plastic material having a dispersion coefficient of 20 to 30 to correct chromatic aberration, and on the optical axis of the second lens L2. The curvature is in the form of a sloping recess, which reduces the difference between the incident angle of the light incident on the first surface of the second lens and the incident angle of the light emitted from the second surface, thereby reducing the manufacturing sensitivity.

양의 굴절력을 갖진 양면 비구면으로 구성된 플라스틱 소재의 제3의 렌즈는 상면 높이에 따른 입사각을 미세하게 조정하는 기능을 가지며, 비점수차 보정의 작용을 한다.The third lens made of a plastic material composed of a double-sided aspherical surface having a positive refractive power has a function of finely adjusting the angle of incidence according to the image height, and serves to correct astigmatism.

[조건식 1][Condition 1]

Figure 112007034203182-PAT00006
Figure 112007034203182-PAT00006

상기 조건식에서 f1 은 제1렌즈 (L1) 근축초점거리 이고 f 는 광학계 전체 초점거리이다. [조건식1]에 그 값이 하한으로 치우칠 경우 제조 민감도는 개선되나 광학전장이 커지고, 그 값이 상한으로 치우칠 경우 광학전장은 작아지나 제조 민감도가 커져 제조수율이 떨어지게 된다.F1 in the above condition Is the paraxial focal length of the first lens L1 and f is the total focal length of the optical system. If the value in [Condition 1] is biased to the lower limit, the manufacturing sensitivity is improved, but the optical field is increased. If the value is biased to the upper limit, the optical field is smaller, but the manufacturing sensitivity is decreased, resulting in a lower manufacturing yield.

[조건식 2][Condition Formula 2]

Figure 112007034203182-PAT00007
Figure 112007034203182-PAT00007

상기 조건식에서 V2는 제2렌즈(L2)의 아베수(Abbe Number)로 색수차를 감소시켜 고성능을 구현하기 위한 제한 범위이다.In the above conditional expression, V2 is a limit range for implementing high performance by reducing chromatic aberration to the Abbe number of the second lens L2.

[조건식 3][Condition 3]

Figure 112007034203182-PAT00008
Figure 112007034203182-PAT00008

[조건식 4][Condition 4]

Figure 112007034203182-PAT00009
Figure 112007034203182-PAT00009

[조건식 5][Condition 5]

Figure 112007034203182-PAT00010
Figure 112007034203182-PAT00010

상기조건식에서 f는 광학계 전체의 근축초점거리, f2는 제2렌즈(L2)의 근축초점거리, f3은 제3렌즈(L3)의 초점거리, d는 조리개에서 제3렌즈의 제2면까지의 거리 이다. [조건식 3]에서 그 값이 하한으로 치우칠 경우 비점수차가 발생하고, 왜곡현상이 양(+)방향으로 발생한고, 그 값이 상한으로 치우칠 경우 광학전장이 길어지는 현상이 발생한다. [조건식 4]에서 그 값이 하한으로 치우칠 경우 비점수차가 발생하고, 그 값이 상한으로 치우칠 경우 광학전장이 커지면서 상면 만곡 수차가 발생한다. [조건식 5]는 소형화 하면서 성능을 유지하고 제조민감도를 낮게 유지하기 위한 제한식으로 그 값이 하한으로 가면 제조민감도가 증가하고, 그 값이 상한으로 치우치면 광학전장이 커져 소형화 하기 어렵게 된다.In the above condition f is the paraxial focal length of the entire optical system, f2 is the paraxial focal length of the second lens L2, f3 is the focal length of the third lens L3, d is the aperture from the aperture to the second surface of the third lens It is a street. In [Condition 3], when the value is skewed to the lower limit, astigmatism occurs, distortion occurs in the positive (+) direction, and when the value is skewed to the upper limit, the optical field becomes long. In [Condition 4], if the value is skewed to the lower limit, astigmatism occurs. If the value is skewed to the upper limit, the optical field becomes large and the top surface aberration occurs. [Condition 5] is a limiting formula for maintaining performance while maintaining miniaturization while keeping the manufacturing sensitivity low. If the value goes to the lower limit, the manufacturing sensitivity is increased. If the value is biased to the upper limit, the optical field becomes large and it is difficult to miniaturize.

[표1]은 본 발명의 제1실시예에 따른 촬영 렌즈를 구성하는 각 렌즈의 실시예 값이 기재되어 있다. [표5]는 [수학식1]에 따라 산출되는 제1실시예에 따른 각 비구면의 계수를 나타낸 것이다. [표2]는 본 발명의 제2실시예에 따른 촬영 렌즈를 구성하는 각 렌즈의 실시예 값이 기재되어 있다. [표6]는 [수학식1]에 따라 산출되는 제2실시예에 따른 각 비구면의 계수를 나타낸 것이다. [표3]는 본 발명의 제3실시예에 따른 촬영 렌즈를 구성하는 각 렌즈의 실시예 값이 기재되어 있다. [표7]는 [수학식1]에 따라 산출되는 제3실시예에 따른 각 비구면의 계수를 나타낸 것이다. [표4]는 본 발명의 제4실시예에 따른 촬영 렌즈를 구성하는 각 렌즈의 실시예 값이 기재되어 있다. [표8]는 [수학식1]에 따라 산출되는 제4실시예에 따른 각 비구면의 계수를 나타낸 것이다. [표9]은 [조건식1~5]에 따른 실시예의 계산값을 나타낸다.Table 1 describes the embodiment values of each lens constituting the photographing lens according to the first embodiment of the present invention. Table 5 shows the coefficients of each aspherical surface according to the first embodiment calculated according to [Equation 1]. Table 2 describes the embodiment values of each lens constituting the photographing lens according to the second embodiment of the present invention. [Table 6] shows the coefficients of each aspherical surface according to the second embodiment calculated according to [Equation 1]. Table 3 describes the embodiment values of each lens constituting the photographing lens according to the third embodiment of the present invention. Table 7 shows coefficients of each aspherical surface according to the third embodiment calculated according to Equation (1). Table 4 describes the embodiment values of each lens constituting the photographing lens according to the fourth embodiment of the present invention. [Table 8] shows the coefficients of each aspherical surface according to the fourth embodiment calculated according to [Equation 1]. Table 9 shows calculated values of the examples according to [Conditions 1 to 5].

실시예 1Example 1 면번호Face number 곡율반경 (R)Bending Radius (R) 두께 거리 (d)Thickness distance (d) 굴절율( Nd)Refractive index (Nd) 아베수 (Vd)Abbe's (Vd) STOSTO INFINITYINFINITY 0.000 0.000 　 　 2 *2 * 1.073 1.073 0.695 0.695 1.54410 1.54410 56.09 56.09 3 *3 * 1.857 1.857 0.600 0.600 　 　 4 *4 * -15.051 -15.051 0.420 0.420 1.63200 1.63200 23.41 23.41 5 *5 * 3.338 3.338 0.290 0.290 　 　 6 *6 * 1.225 1.225 0.732 0.732 1.54410 1.54410 56.09 56.09 7 *7 * 1.981 1.981 0.500 0.500 　 　 8 8 INFINITYINFINITY 0.300 0.300 1.51680 1.51680 64.19 64.19 9 9 INFINITYINFINITY 0.401 0.401 　 　 IMGIMG INFINITYINFINITY 0.001 0.001 　 　

*는 비구면을 나타냄* Indicates aspherical surface

면번호Face number 곡율반경 (R)Bending Radius (R) 두께 거리 (d)Thickness distance (d) 굴절율(Nd)Refractive index (Nd) 분산계수(Vd)Dispersion coefficient (Vd) STOSTO INFINITYINFINITY 0.000 0.000 　 　 2 *2 * 0.968 0.968 0.551 0.551 1.54410 1.54410 56.09 56.09 3 *3 * 1.631 1.631 0.511 0.511 　 　 4 *4 * -58.445 -58.445 0.390 0.390 1.60710 1.60710 23.41 23.41 5 *5 * 2.965 2.965 0.323 0.323 　 　 6 *6 * 1.250 1.250 0.710 0.710 1.54410 1.54410 56.09 56.09 7 *7 * 2.040 2.040 0.500 0.500 　 　 8 8 INFINITYINFINITY 0.300 0.300 1.51680 1.51680 64.19 64.19 9 9 INFINITYINFINITY 0.400 0.400 　 　 IMGIMG INFINITYINFINITY -0.020 -0.020 　 　

실시예 2Example 2

*는 비구면을 나타냄* Indicates aspherical surface

실시예 3Example 3 면번호Face number 곡율반경 (R)Bending Radius (R) 두께 ,거리 (d)Thickness, distance (d) 굴절율(Nd)Refractive index (Nd) 분산계수(Vd)Dispersion coefficient (Vd) STOSTO INFINITYINFINITY 0.000 0.000 　 　 2 *2 * 1.068 1.068 0.700 0.700 1.54410 1.54410 56.09 56.09 3 *3 * 1.828 1.828 0.615 0.615 　 　 4 *4 * -12.230 -12.230 0.420 0.420 1.63200 1.63200 23.41 23.41 5 *5 * 3.427 3.427 0.277 0.277 　 　 6 *6 * 1.224 1.224 0.730 0.730 1.54410 1.54410 56.09 56.09 7 *7 * 2.064 2.064 0.500 0.500 　 　 8 8 INFINITYINFINITY 0.300 0.300 1.51680 1.51680 64.19 64.19 9 9 INFINITYINFINITY 0.396 0.396 　 　 IMGIMG INFINITYINFINITY -0.003 -0.003 　 　

*는 비구면을 나타냄* Indicates aspherical surface

실시예 4Example 4 면번호Face number 곡율반경 (R)Bending Radius (R) 두께 ,거리 (d)Thickness, distance (d) 굴절율(Nd)Refractive index (Nd) 분산계수(Vd)Dispersion coefficient (Vd) STOSTO INFINITYINFINITY 0.000 0.000 　 　 2 *2 * 1.106 1.106 0.904 0.904 1.54410 1.54410 56.09 56.09 3 *3 * 2.129 2.129 0.470 0.470 　 　 4 *4 * -6.992 -6.992 -0.143 -0.143 1.60710 1.60710 26.60 26.60 5 *5 * 2.838 2.838 0.352 0.352 　 　 6 *6 * 1.238 1.238 0.808 0.808 1.54410 1.54410 56.09 56.09 7 *7 * 2.496 2.496 0.401 0.401 　 　 8 8 INFINITYINFINITY 0.000 0.000 1.51680 1.51680 64.19 64.19 9 9 INFINITYINFINITY 0.000 0.000 　 　 IMGIMG INFINITYINFINITY 0.000 0.000 　 　

*는 비구면을 나타냄* Indicates aspherical surface

실시예1에 대한 촬영 렌즈의 비구면 계수Aspherical coefficient of the photographing lens for Example 1 면번호Face number 2 2 3 3 4 4 5 5 6 6 7 7 RR 1.07338E+001.07338E + 00 1.85730E+001.85730E + 00 -1.50513E+01-1.50513E + 01 3.33768E+003.33768E + 00 1.22459E+001.22459E + 00 1.98124E+001.98124E + 00 KK -1.44364E-01-1.44364E-01 4.68176E+004.68176E + 00 9.58484E+019.58484E + 01 -9.80269E+01-9.80269E + 01 -6.40220E+00-6.40220E + 00 -6.48010E+00-6.48010E + 00 AA 2.78186E-022.78186E-02 4.43147E-024.43147E-02 -1.84902E-01-1.84902E-01 -1.73211E-01-1.73211E-01 -7.23553E-02-7.23553E-02 -6.99664E-02-6.99664E-02 BB 7.91443E-027.91443E-02 -6.90273E-02-6.90273E-02 9.75760E-029.75760E-02 9.35267E-029.35267E-02 1.13063E-021.13063E-02 1.32218E-021.32218E-02 CC -1.97805E-01-1.97805E-01 9.57148E-019.57148E-01 -5.31003E-01-5.31003E-01 -1.58342E-02-1.58342E-02 2.27776E-032.27776E-03 -3.76128E-03-3.76128E-03 DD 6.02279E-016.02279E-01 -3.03247E+00-3.03247E + 00 9.02771E-019.02771E-01 -4.14134E-02-4.14134E-02 -2.50708E-04-2.50708E-04 5.03175E-055.03175E-05 EE -4.85410E-01-4.85410E-01 4.60794E+004.60794E + 00 -8.34461E-01-8.34461E-01 2.89968E-022.89968E-02 -1.32093E-04-1.32093E-04 2.81528E-042.81528E-04 FF 0.00000E+000.00000E + 00 0.00000E+000.00000E + 00 -5.51299E-02-5.51299E-02 -6.95850E-03-6.95850E-03 1.46021E-051.46021E-05 -4.25697E-05-4.25697E-05

실시예2에 대한 촬영 렌즈의 비구면 계수Aspherical coefficient of the photographing lens for Example 2 면번호Face number 2 2 3 3 4 4 5 5 6 6 7 7 RR 9.67989E-019.67989E-01 1.63097E+001.63097E + 00 -5.84450E+01-5.84450E + 01 2.96502E+002.96502E + 00 1.25002E+001.25002E + 00 2.04011E+002.04011E + 00 KK -9.96108E-02-9.96108E-02 4.76238E+004.76238E + 00 4.59923E+034.59923E + 03 -9.03078E+01-9.03078E + 01 -6.43057E+00-6.43057E + 00 -2.40728E+00-2.40728E + 00 AA 4.67243E-024.67243E-02 4.38662E-024.38662E-02 -2.52653E-01-2.52653E-01 -1.76375E-01-1.76375E-01 -7.69349E-02-7.69349E-02 -1.19105E-01-1.19105E-01 BB 1.25908E-011.25908E-01 -6.88474E-02-6.88474E-02 2.15646E-012.15646E-01 1.26955E-011.26955E-01 1.54196E-021.54196E-02 3.31033E-023.31033E-02 CC -2.90246E-01-2.90246E-01 1.48477E+001.48477E + 00 -8.79369E-01-8.79369E-01 -1.50195E-02-1.50195E-02 3.00019E-033.00019E-03 -9.27581E-03-9.27581E-03 DD 1.26728E+001.26728E + 00 -5.95901E+00-5.95901E + 00 1.64702E+001.64702E + 00 -8.84190E-02-8.84190E-02 -4.09777E-04-4.09777E-04 3.03881E-043.03881E-04 EE -1.05263E+00-1.05263E + 00 1.17996E+011.17996E + 01 -2.03283E+00-2.03283E + 00 5.37632E-025.37632E-02 -2.50056E-04-2.50056E-04 6.95027E-046.95027E-04 FF 0.00000E+000.00000E + 00 0.00000E+000.00000E + 00 -3.25649E-02-3.25649E-02 -8.33358E-03-8.33358E-03 3.53400E-053.53400E-05 -1.18731E-04-1.18731E-04

실시예3에 대한 촬영 렌즈에 대한 비구면 계수Aspheric coefficient for the photographing lens for Example 면번호Face number 2 2 3 3 4 4 5 5 6 6 7 7 RR 1.06791E+001.06791E + 00 1.82768E+001.82768E + 00 -1.22299E+01-1.22299E + 01 3.42660E+003.42660E + 00 1.22413E+001.22413E + 00 2.06354E+002.06354E + 00 KK -1.40693E-01-1.40693E-01 4.49246E+004.49246E + 00 6.14197E+016.14197E + 01 -1.00000E+02-1.00000E + 02 -6.08491E+00-6.08491E + 00 -2.87127E+00-2.87127E + 00 AA 2.80199E-022.80199E-02 4.94077E-024.94077E-02 -1.79028E-01-1.79028E-01 -1.79613E-01-1.79613E-01 -6.98210E-02-6.98210E-02 -1.00357E-01-1.00357E-01 BB 8.30877E-028.30877E-02 -7.39497E-02-7.39497E-02 7.86856E-027.86856E-02 9.12631E-029.12631E-02 1.21397E-021.21397E-02 2.50732E-022.50732E-02 CC -2.02534E-01-2.02534E-01 9.89456E-019.89456E-01 -5.19100E-01-5.19100E-01 -1.18780E-02-1.18780E-02 1.74767E-031.74767E-03 -5.91921E-03-5.91921E-03 DD 5.88227E-015.88227E-01 -3.04994E+00-3.04994E + 00 9.20534E-019.20534E-01 -4.38344E-02-4.38344E-02 -2.45519E-04-2.45519E-04 2.05151E-042.05151E-04 EE -4.55343E-01-4.55343E-01 4.69986E+004.69986E + 00 -8.52636E-01-8.52636E-01 2.57478E-022.57478E-02 -1.30526E-04-1.30526E-04 2.96719E-042.96719E-04 FF 0.00000E+000.00000E + 00 0.00000E+000.00000E + 00 -9.94785E-02-9.94785E-02 -5.37439E-03-5.37439E-03 1.66338E-051.66338E-05 -4.67684E-05-4.67684E-05

실시예4에 대한 촬영 렌즈에 대한 비구면 계수Aspheric coefficient for the photographing lens for Example 4 면번호Face number 2 2 3 3 4 4 5 5 6 6 7 7 RR 1.10565E+001.10565E + 00 2.12934E+002.12934E + 00 -6.99167E+00-6.99167E + 00 2.83762E+002.83762E + 00 1.23752E+001.23752E + 00 2.49616E+002.49616E + 00 KK -1.49968E-01-1.49968E-01 4.52143E+004.52143E + 00 -2.90842E+01-2.90842E + 01 -8.20984E+01-8.20984E + 01 -7.32009E+00-7.32009E + 00 -1.53451E+00-1.53451E + 00 AA 2.87665E-022.87665E-02 5.79320E-025.79320E-02 -1.67201E-01-1.67201E-01 -1.23451E-01-1.23451E-01 -5.02345E-02-5.02345E-02 -9.43561E-02-9.43561E-02 BB 8.82444E-028.82444E-02 -6.42102E-02-6.42102E-02 1.32061E-011.32061E-01 9.98545E-029.98545E-02 1.10759E-021.10759E-02 2.46086E-022.46086E-02 CC -2.07995E-01-2.07995E-01 1.01579E+001.01579E + 00 -5.50046E-01-5.50046E-01 -1.00627E-02-1.00627E-02 1.27146E-031.27146E-03 -5.93549E-03-5.93549E-03 DD 5.45328E-015.45328E-01 -2.99676E+00-2.99676E + 00 8.23294E-018.23294E-01 -4.22769E-02-4.22769E-02 -3.28710E-04-3.28710E-04 1.92378E-041.92378E-04 EE -3.56156E-01-3.56156E-01 4.46669E+004.46669E + 00 -9.01005E-01-9.01005E-01 2.65921E-022.65921E-02 -1.31344E-04-1.31344E-04 2.89598E-042.89598E-04 FF 0.00000E+000.00000E + 00 0.00000E+000.00000E + 00 -5.55723E-02-5.55723E-02 -4.82132E-03-4.82132E-03 1.86806E-051.86806E-05 -4.99532E-05-4.99532E-05

조건식에 따른 실시예의 계산값Calculated Value of Example According to Conditional Expression 　 조건식1Conditional Expression 1 조건식2Conditional Expression 2 조건식3Conditional Expression 3 조건식4Conditional Expression 4 조건식5Conditional Expression 5 f1/ ff1 / f v2v2 f2/f3f2 / f3 f3/ff3 / f d/fd / f 실시예 1Example 1 1.02 1.02 23.41 23.41 -0.97 -0.97 1.25 1.25 0.784 0.784 실시예 2Example 2 1.02 1.02 23.41 23.41 -0.98 -0.98 1.18 1.18 0.765 0.765 실시예 3Example 3 1.02 1.02 23.41 23.41 -0.98 -0.98 1.21 1.21 0.787 0.787 실시예 4Example 4 0.94 0.94 26.30 26.30 -0.89 -0.89 1.01 1.01 0.799 0.799

Figure 112007034203182-PAT00011
Figure 112007034203182-PAT00011

Figure 112007034203182-PAT00012
Figure 112007034203182-PAT00012

여기서, z는 중심광축으로부터 높이가 h인 비구면상의 좌표점에 대한 비구면 정점상의 수직면으로부터의 거리를 나타내고 K는 코닉(Conic)상수이며 c는 비구면 정점의 렌즈곡률을 나타내고 A, B, C, D, E, F는 비구면 계수를 나타낸다.Where z represents the distance from the vertical plane on the aspheric vertex to the coordinate point on the aspherical surface of height h from the central optical axis, K is the Conic constant, c is the lens curvature of the aspherical vertex and A, B, C, D , E and F represent aspherical coefficients.

이상과 같이 본 발명의 실시예에 따라서 휴대성이 강한 제품에 적용이 쉽도록 소형화, 고성능화 설계가 가능하다.As described above, according to the embodiment of the present invention, it is possible to design a miniaturized and high-performance device for easy application to a product having strong portability.

Claims (5)

물체측으로부터 순차적으로, 조리개, 정의 굴절력을 갖고 볼록면이 물체측을 향하는 메니스커스 형상의 플라스틱소재로 구성된 양면 비구면을 사용한 제1렌즈, 부의 굴절력을 갖고 양오목 형태의 양면 비구면을 사용한 플라스틱 소재의 제2렌즈, 정의 굴절력을 갖고 상측의 면이 볼록인 메니스커스 형태의 양면 비구면을 사용한 플라스틱 소재의 제3렌즈로 구성된다.A first lens using a double-sided aspherical surface composed of a meniscus-shaped plastic material having a diaphragm, positive refractive power and a convex surface facing the object side sequentially from the object side, and a plastic material using a double-sided aspherical surface having a negative refractive power And a second lens of a plastic material using a two-sided aspherical surface of a meniscus shape having a positive refractive power and a convex image surface. 이 광학계를 구성하는 렌즈면의 곡율반경은 광축상에서 제2렌즈 제1면의 곡율반경이 부(-)의 값을 갖고, 이를 제외한 모든면의 곡율반경은 근축상에서 정(+)의 값을 갖는 것을 만족하는 촬영렌즈The radius of curvature of the lens surface constituting the optical system has a negative value of the curvature radius of the second lens first surface on the optical axis, and the radius of curvature of all surfaces except this has a positive value on the paraxial axis. Shooting lens that satisfies 청구항1에서 제1렌즈 (L1)가 다음의 조건을 만족하는 촬영 렌즈.The photographing lens of claim 1, wherein the first lens L1 satisfies the following conditions.
Figure 112007034203182-PAT00013
Figure 112007034203182-PAT00013
 여기에서 f1은 제1렌즈(L1)의 근축초점거리, f는 광학계 전체의 근축초점거리 Here, f1 is the paraxial focal length of the first lens L1, and f is the paraxial focal length of the whole optical system. 청구항1에서 제2렌즈는 다음의 조건을 만족하는 촬영 렌즈.The photographing lens of claim 1, wherein the second lens satisfies the following conditions.
Figure 112007034203182-PAT00014
Figure 112007034203182-PAT00014
 여기에서 V2는 제2렌즈(L2)의 아베수(Abbe Number) Here, V2 is the Abbe Number of the second lens L2. 청구항1에서 있어서 다음조건을 만족하는 촬영 렌즈.The photographing lens of claim 1, wherein the photographing lens satisfies the following conditions.
Figure 112007034203182-PAT00015
Figure 112007034203182-PAT00015
Figure 112007034203182-PAT00016
Figure 112007034203182-PAT00016
Figure 112007034203182-PAT00017
Figure 112007034203182-PAT00017
 여기에서 f는 광학계 전체의 근축초점거리, f2는 제2렌즈(L2)의 근축초점거리, f3은 제3렌즈(L3)의 초점거리, d는 조리개에서 제3렌즈의 제2면까지의 거리Where f is the paraxial focal length of the entire optical system, f2 is the paraxial focal length of the second lens L2, f3 is the focal length of the third lens L3, d is the distance from the aperture to the second surface of the third lens 청구항1에 있어서 제1렌즈(L1)의 소재가 유리(Glass)으로 구성된 촬영 렌즈The photographing lens of claim 1, wherein the material of the first lens L1 is made of glass.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8120858B2 (en) 2008-12-04 2012-02-21 Samsung Electronics Co., Ltd. Micro lens, method and apparatus for manufacturing micro lens, and camera module including micro lens
US8305699B2 (en) 2009-09-23 2012-11-06 Samsung Electronics Co., Ltd. Wafer-level lens module with extended depth of field and imaging device including the wafer-level lens module
CN103163626A (en) * 2011-12-19 2013-06-19 大立光电股份有限公司 Imaging lens group
JP2013137341A (en) * 2011-12-28 2013-07-11 Optical Logic Inc Imaging lens
US8520137B2 (en) 2009-08-13 2013-08-27 Samsung Electronics Co., Ltd. Wafer-level lens module and image pickup device including the same
CN117406410A (en) * 2023-12-14 2024-01-16 联创电子科技股份有限公司 Optical lens and camera module

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8120858B2 (en) 2008-12-04 2012-02-21 Samsung Electronics Co., Ltd. Micro lens, method and apparatus for manufacturing micro lens, and camera module including micro lens
US8520137B2 (en) 2009-08-13 2013-08-27 Samsung Electronics Co., Ltd. Wafer-level lens module and image pickup device including the same
US8305699B2 (en) 2009-09-23 2012-11-06 Samsung Electronics Co., Ltd. Wafer-level lens module with extended depth of field and imaging device including the wafer-level lens module
CN103163626A (en) * 2011-12-19 2013-06-19 大立光电股份有限公司 Imaging lens group
JP2013137341A (en) * 2011-12-28 2013-07-11 Optical Logic Inc Imaging lens
CN117406410A (en) * 2023-12-14 2024-01-16 联创电子科技股份有限公司 Optical lens and camera module
CN117406410B (en) * 2023-12-14 2024-04-05 联创电子科技股份有限公司 Optical lens and camera module

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