TW202234115A - Optical imaging system,acquisition module and electronic device - Google Patents

Optical imaging system,acquisition module and electronic device Download PDF

Info

Publication number
TW202234115A
TW202234115A TW110116439A TW110116439A TW202234115A TW 202234115 A TW202234115 A TW 202234115A TW 110116439 A TW110116439 A TW 110116439A TW 110116439 A TW110116439 A TW 110116439A TW 202234115 A TW202234115 A TW 202234115A
Authority
TW
Taiwan
Prior art keywords
lens
imaging system
optical imaging
optical axis
object side
Prior art date
Application number
TW110116439A
Other languages
Chinese (zh)
Other versions
TWI766675B (en
Inventor
馮雅蘭
黃國顏
游家志
Original Assignee
鴻海精密工業股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 鴻海精密工業股份有限公司 filed Critical 鴻海精密工業股份有限公司
Application granted granted Critical
Publication of TWI766675B publication Critical patent/TWI766675B/en
Publication of TW202234115A publication Critical patent/TW202234115A/en

Links

Images

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/001Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045Miniaturised 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 five or more lenses
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/001Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/008Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light

Landscapes

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

Abstract

The invention provides an optical imaging system, an acquisition module, and an electronic device. From the object side to the image side, the optical imaging system sequentially includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The optical imaging system satisfies the following conditions: 11DEG /mm < FOV/TTL < 13DEG /mm; 0.35mm < TL5 < 0.52mm, the FOV is the maximum field angle of the optical imaging system, the TTL is the distance from the object side of the first lens to the imaging surface of the optical imaging system on the optical axis, the TL5 is the distance from the object side of the fifth lens to the imaging surface of the optical imaging system on the optical axis. The optical imaging system has a larger field of view and a smaller overall length.

Description

光學成像系統、取像模組及電子裝置Optical imaging system, imaging module and electronic device

本申請涉及光學成像技術領域,具體涉及一種光學成像系統、取像模組及電子裝置。The present application relates to the technical field of optical imaging, and in particular, to an optical imaging system, an imaging module and an electronic device.

近年來,隨著電子產品科技的發展,具有照相或偵測等功能的小型化光學裝置的應用領域也越來越廣。多數的光學裝置常在可見光的電磁波範圍進行取像,但在某些領域中(如偵測、辨識等)需要在可見光以外波長的電磁波(例如紅外線等) 進行取像。然而,這些可見光以外波長的電磁波常因亮度不足而使光學裝置需要另外搭配一個光源進行拍攝、偵測等。In recent years, with the development of electronic product technology, the application fields of miniaturized optical devices with functions such as photography or detection have become wider and wider. Most optical devices usually capture images in the electromagnetic wave range of visible light, but in some fields (eg, detection, identification, etc.), it is necessary to capture images at wavelengths other than visible light (eg, infrared rays, etc.). However, these electromagnetic waves with wavelengths other than visible light are often insufficient in brightness, so that the optical device needs to be equipped with an additional light source for shooting and detection.

目前常用紅外線的波長範圍因為在使用上有安全的疑慮(例如會對對紅外線較為敏感的眼睛等人體部位造成影響),而需限制光源的強度,進而造成應用上的限制。對此,其中一種克服方法為採用波長較長的紅外線光源,如此光學裝置即可搭配強度較強的紅外線光源。但現有的各種小型化光學裝置因為採用的波長範圍差別過大,且其所需拍攝的影像特性不同,故一些小型化光學裝置不適合應用在所述波長較長的紅外線範圍。At present, the wavelength range of infrared rays commonly used has safety concerns in use (for example, it will affect the human body parts such as eyes that are more sensitive to infrared rays), and the intensity of the light source needs to be limited, thereby causing limitations in application. One way to overcome this is to use an infrared light source with a longer wavelength, so that the optical device can be matched with an infrared light source with a stronger intensity. However, because the wavelength ranges used by various existing miniaturized optical devices are too different, and the characteristics of the images to be captured are different, some miniaturized optical devices are not suitable for application in the infrared range with longer wavelengths.

鑒於上述狀況,有必要提供一種光學成像系統、取像模組及電子裝置,以解決上述問題。In view of the above situation, it is necessary to provide an optical imaging system, an imaging module and an electronic device to solve the above problems.

本申請的實施例提供了一種光學成像系統,由物側到像側依次包括第一透鏡、第二透鏡、第三透鏡、第四透鏡及第五透鏡,所述光學成像系統滿足以下條件式:11/mm<FOV/TTL<13/mm;0.35mm<TL5<0.52mm;其中,FOV為所述光學成像系統的最大視場角,TTL為所述第一透鏡的物側面至所述光學成像系統的成像面在光軸上的距離,TL5為所述第五透鏡的物側面至其像側面在光軸上的距離。An embodiment of the present application provides an optical imaging system, including a first lens, a second lens, a third lens, a fourth lens, and a fifth lens in sequence from the object side to the image side, and the optical imaging system satisfies the following conditional formula: 11/mm<FOV/TTL<13/mm; 0.35mm<TL5<0.52mm; wherein, FOV is the maximum field angle of the optical imaging system, and TTL is the object side of the first lens to the optical imaging The distance of the imaging plane of the system on the optical axis, TL5 is the distance from the object side of the fifth lens to its image side on the optical axis.

上述的光學成像系統可在較大視場角的同時具有較小的總長,且控制第五透鏡的厚度有利於壓縮光學成像系統的總長,以進一步實現小型化的特點;且具有不同的光學特徵以應用在波長較長的紅外線範圍,以實現在偵測、辨識等領域的拍攝。The above-mentioned optical imaging system can have a smaller overall length while having a larger field of view, and controlling the thickness of the fifth lens is conducive to compressing the overall length of the optical imaging system, so as to further realize the characteristics of miniaturization; and have different optical characteristics It can be used in the infrared range with longer wavelength to achieve shooting in the fields of detection and identification.

本申請的實施例還提出了一種取像模組,包括:上述的光學成像系統;及感光元件,所述感光元件設置在所述光學成像系統的像側。The embodiments of the present application also provide an image capturing module, including: the above-mentioned optical imaging system; and a photosensitive element, and the photosensitive element is arranged on the image side of the optical imaging system.

本申請的實施例還提出了一種電子裝置,包括:殼體;及如上述的取像模組,所述取像模組安裝在所述殼體上。The embodiments of the present application further provide an electronic device, including: a casing; and the above-mentioned imaging module, wherein the imaging module is mounted on the casing.

請參見圖1,本申請的實施例提出了一種光學成像系統10,從物側至像側依次包括光闌STO、第一透鏡L1、第二透鏡L2、第三透鏡L3、第四透鏡L4及第五透鏡L5。Referring to FIG. 1 , an embodiment of the present application proposes an optical imaging system 10 , which includes a diaphragm STO, a first lens L1 , a second lens L2 , a third lens L3 , a fourth lens L4 and a diaphragm STO, a first lens L1 , a second lens L2 , a third lens L3 , and a Fifth lens L5.

所述第一透鏡L1具有物側面S2與像側面S3, 所述第二透鏡L2具有物側面S5與像側面S6,所述第三透鏡L3具有物側面S7與像側面S8,所述第四透鏡L4具有物側面S9與像側面S10,所述第五透鏡L5具有物側面S11與像側面S12。The first lens L1 has an object side S2 and an image side S3, the second lens L2 has an object side S5 and an image side S6, the third lens L3 has an object side S7 and an image side S8, and the fourth lens has an object side S7 and an image side S8. L4 has an object side S9 and an image side S10, and the fifth lens L5 has an object side S11 and an image side S12.

所述光學成像系統滿足以下條件式:11/mm<FOV/TTL<13/mm;0.35mm<TL5<0.52mm;其中,FOV為所述光學成像系統10的最大視場角,TTL為所述第一透鏡L1的物側面S2至所述光學成像系統10的成像面IMA在光軸上的距離,TL5為所述第五透鏡L5的物側面S11至其像側面S12在光軸上的距離。The optical imaging system satisfies the following conditional formulas: 11/mm<FOV/TTL<13/mm; 0.35mm<TL5<0.52mm; wherein, FOV is the maximum angle of view of the optical imaging system 10, and TTL is the The distance on the optical axis from the object side S2 of the first lens L1 to the imaging plane IMA of the optical imaging system 10, and TL5 is the distance on the optical axis from the object side S11 of the fifth lens L5 to its image side S12.

上述的光學成像系統10可在較大視場角的同時具有較小的總長,且控制第五透鏡L5的厚度有利於壓縮光學成像系統10的總長,以進一步實現小型化的特點;且具有不同的光學特徵以應用在波長較長的紅外線範圍,以實現在偵測、辨識等領域的拍攝。The above-mentioned optical imaging system 10 can have a smaller overall length while having a larger field of view, and controlling the thickness of the fifth lens L5 is conducive to compressing the overall length of the optical imaging system 10 to further realize miniaturization; and has different characteristics. The optical characteristics of the sensor can be used in the infrared range with longer wavelengths to achieve shooting in the fields of detection and identification.

在一實施例中,光學成像系統10滿足條件式:1.0<SD22/SD12<1.1;其中,SD22為所述第二透鏡L2的像側面S6的有效半直徑,SD12為所述第一透鏡L1的像側面S3的有效半直徑。滿足上述關係式時,有利於光學成像系統10的前端頭部口徑尺寸做小,實現小型化的特點。In one embodiment, the optical imaging system 10 satisfies the conditional formula: 1.0<SD22/SD12<1.1; wherein, SD22 is the effective half diameter of the image side surface S6 of the second lens L2, SD12 is the first lens L1 Like the effective half diameter of side S3. When the above relational expression is satisfied, it is beneficial to reduce the diameter of the front-end head of the optical imaging system 10 and realize the characteristics of miniaturization.

在一實施例中,光學成像系統10滿足條件式:6.3<R5/CT3<7.0;其中,R5為所述第三透鏡L3的物側面S7在近光軸處的曲率半徑,CT3為所述第三透鏡L3的物側面S7至所述第三透鏡L3的像側面S8在光軸上的距離。藉由滿足條件式的限定,可近一步彙聚光線,使第三透鏡L3面型平滑,可降低不同視場光線入射角及出射角的偏差,從而降低敏感度;而藉由設置較厚的第三透鏡L3可以減小加工難度且降低厚度公差敏感度,提升良率。In one embodiment, the optical imaging system 10 satisfies the conditional formula: 6.3<R5/CT3<7.0; wherein, R5 is the radius of curvature of the object side surface S7 of the third lens L3 at the near optical axis, and CT3 is the The distance on the optical axis from the object side S7 of the third lens L3 to the image side S8 of the third lens L3. By satisfying the limitation of the conditional expression, the light can be further converged to make the surface of the third lens L3 smooth, which can reduce the deviation of the incident angle and the exit angle of the light in different fields of view, thereby reducing the sensitivity; The three-lens L3 can reduce the difficulty of processing and reduce the sensitivity of thickness tolerance, and improve the yield.

在一些實施例中,所述光學成像系統10滿足以下關係式: 15.5°/mm <FOV/f<18.5°/mm;其中,FOV為所述光學成像系統10的最大視場角,f為所述光學成像系統10的有效焦距。如此,能夠有效控制光學成像系統10在滿足合適的有效焦距的條件下,達到短總長的目的,滿足光學成像系統10的輕薄化的需求。 In some embodiments, the optical imaging system 10 satisfies the following relationship: 15.5°/mm <FOV/f<18.5°/mm; wherein, FOV is the maximum field angle of the optical imaging system 10 , and f is the effective focal length of the optical imaging system 10 . In this way, it is possible to effectively control the optical imaging system 10 to achieve the purpose of shortening the overall length under the condition of satisfying an appropriate effective focal length, and to meet the requirement of the optical imaging system 10 being light and thin.

在一些實施例中,所述光學成像系統10滿足以下關係式: 0.7<|RS7+RS8|/|RS7-RS8|<1.3;其中,RS7為所述第四透鏡L4的物側面S9在近光軸處的曲率半徑,RS8為所述第四透鏡L4的像側面S10在近光軸處的曲率半徑。如此,第四透鏡L4的曲率半徑可影響第四透鏡L4的彎曲程度;滿足上述條件式時,可有效校正光學成像系統10的邊緣像差,抑制像散的產生,減小周邊視角的主光線射入像面的角度。 In some embodiments, the optical imaging system 10 satisfies the following relationship: 0.7<|RS7+RS8|/|RS7-RS8|<1.3; wherein, RS7 is the radius of curvature of the object side S9 of the fourth lens L4 at the near optical axis, and RS8 is the image side of the fourth lens L4 The radius of curvature of S10 at the near optical axis. In this way, the curvature radius of the fourth lens L4 can affect the degree of curvature of the fourth lens L4; when the above conditional formula is satisfied, the edge aberration of the optical imaging system 10 can be effectively corrected, the generation of astigmatism can be suppressed, and the chief ray of peripheral viewing angles can be reduced The angle of the incident image plane.

在一些實施例中,所述光學成像系統10滿足以下條件式: 4<vd1-vd2<5;其中,vd1為所述第一透鏡L1的阿貝數,vd2為所述第二透鏡L2的阿貝數。如此,合理選擇透鏡材料,能有效修正光學成像系統10的色差,提高光學成像系統10的成像清晰度,從而提升光學成像系統10的成像品質。 In some embodiments, the optical imaging system 10 satisfies the following conditional formula: 4<vd1-vd2<5; wherein, vd1 is the Abbe number of the first lens L1, and vd2 is the Abbe number of the second lens L2. In this way, a reasonable selection of lens materials can effectively correct the chromatic aberration of the optical imaging system 10 , improve the imaging clarity of the optical imaging system 10 , and thereby improve the imaging quality of the optical imaging system 10 .

在一些實施例中,所述光學成像系統10滿足以下條件式: 1.2< FNO <1.4;其中,FNO為所述光學成像系統10的光圈數。如此,可保證光學成像系統10的通光量,提高光學成像系統10的成像清晰度,從而提升光學成像系統10的成像品質。 In some embodiments, the optical imaging system 10 satisfies the following conditional formula: 1.2 < FNO <1.4; wherein, FNO is the aperture number of the optical imaging system 10 . In this way, the light throughput of the optical imaging system 10 can be ensured, the imaging clarity of the optical imaging system 10 can be improved, and the imaging quality of the optical imaging system 10 can be improved.

在一些實施例中,光學成像系統10還包括濾光片L6,濾光片L6具有物側面S13與像側面S14,濾光片L6設置在第一透鏡L1的物側,濾光片L6可以為紅外濾光片,以濾除例如可見光等其他波段的光線,而僅讓紅外光藉由,以使光學成像系統10能夠在昏暗的環境及其他特殊的應用場景下也能成像。可以理解地,濾光片L6的材質可為塑膠,也可為玻璃。In some embodiments, the optical imaging system 10 further includes a filter L6, the filter L6 has an object side S13 and an image side S14, the filter L6 is arranged on the object side of the first lens L1, and the filter L6 can be The infrared filter is used to filter out light in other wavelength bands such as visible light, and only allow infrared light to pass through, so that the optical imaging system 10 can also image in a dark environment and other special application scenarios. It can be understood that the material of the filter L6 can be plastic or glass.

第一實施例first embodiment

請繼續參見圖1,本實施例中的光學成像系統10中,從物側至像側包括光闌STO、具有屈折力的第一透鏡L1、具有屈折力的第二透鏡L2、具有屈折力的第三透鏡L3、具有屈折力的第四透鏡L4、具有屈折力的第五透鏡L5及濾光片L6。Please continue to refer to FIG. 1 , the optical imaging system 10 in this embodiment includes a diaphragm STO, a first lens L1 with refractive power, a second lens L2 with refractive power, and a lens with refractive power from the object side to the image side. The third lens L3, the fourth lens L4 with refractive power, the fifth lens L5 with refractive power, and the filter L6.

所述第一透鏡L1的物側面S2在近光軸處為凸面,所述第一透鏡L1的像側面S3在近光軸處為凹面。所述第二透鏡L2的物側面S5在近光軸處為凹面,所述第二透鏡L2的像側面S6在近光軸處為凸面。所述第三透鏡L3的物側面S7在近光軸處為凸面,所述第三透鏡L3的像側面S8在近光軸處為凹面。所述第四透鏡L4的物側面S9在近光軸處為凹面,所述第四透鏡L4的像側面S10在近光軸處為凸面。所述第五透鏡L5的物側面S11在近光軸處為凹面,所述第五透鏡L5的像側面S12在近光軸處為凹面。The object side S2 of the first lens L1 is convex at the near optical axis, and the image side S3 of the first lens L1 is concave at the near optical axis. The object side S5 of the second lens L2 is concave at the near optical axis, and the image side S6 of the second lens L2 is convex at the near optical axis. The object side S7 of the third lens L3 is convex at the near optical axis, and the image side S8 of the third lens L3 is concave at the near optical axis. The object side S9 of the fourth lens L4 is concave at the near optical axis, and the image side S10 of the fourth lens L4 is convex at the near optical axis. The object side S11 of the fifth lens L5 is concave at the near optical axis, and the image side S12 of the fifth lens L5 is concave at the near optical axis.

當光學成像系統10用於成像時,被攝物發出或反射的光線從物側方向進入光學成像系統10,並依次穿過光闌STO、第一透鏡L1、第二透鏡L2、第三透鏡L3、第四透鏡L4、第五透鏡L5及濾光片L6,最終彙聚到成像面IMA上。When the optical imaging system 10 is used for imaging, the light emitted or reflected by the subject enters the optical imaging system 10 from the object side direction, and sequentially passes through the diaphragm STO, the first lens L1, the second lens L2, and the third lens L3 , the fourth lens L4, the fifth lens L5 and the filter L6, and finally converge on the imaging plane IMA.

表1示出了本實施例的光學成像系統10的特性,f為光學成像系統10的有效焦距, FOV為光學成像系統10的最大視場角,有效焦距、折射率及阿貝數的參考波長為1550nm,曲率半徑、厚度、淨口徑及機械半直徑的單位均為毫米(mm)。Table 1 shows the characteristics of the optical imaging system 10 of this embodiment, f is the effective focal length of the optical imaging system 10, FOV is the maximum field angle of the optical imaging system 10, and the reference wavelengths of the effective focal length, refractive index and Abbe number It is 1550nm, and the units of curvature radius, thickness, net diameter and mechanical half diameter are all millimeters (mm).

表1 第一實施例  f=4.24mm,FNO=1.38,FOV=67 表面編號 鏡片名稱 表面類型 曲率半徑 厚度 折射率 阿貝數 淨口徑 機械半直徑 圓錐係數 OBJ   標準面 無限 10000.000     6658.219 6658.219 0.000 STO   標準面 無限 -0.577     1.525 1.525 0.000 S2 第一透鏡  非球面 2.384 0.680 1.590 61.200 1.529 1.529 -21.208 S3  非球面 7.936 2.218 1.432 1.529 -50.000 S4   標準面 無限 0.280     1.410 1.410 0.000 S5 第二透鏡  非球面 -3.88 0.338 1.510 56.800 1.424 1.486 -7.478 S6  非球面 -4.52 0.042 1.486 1.486 -6.519 S7 第三透鏡  非球面 1.776 0.256 1.670 56.800 1.545 1.608 -1.043 S8  非球面 1.686 0.627 1.608 1.608 -2.655 S9 第四透鏡  非球面 -24.767 0.899 1.670 19.400 1.559 1.723 0.000 S10  非球面 -2.774 0.979 1.723 1.723 -12.453 S11 第五透鏡  非球面 3.36 0.354 1.670 19.400 2.138 2.480 -33.209 S12  非球面 1.379 0.302 2.480 2.480 -7.397 S13 濾光片 標準面 無限 0.210 1.520 64.200 2.691 2.735 0.000 S14 標準面 無限 0.324 2.735 2.735 0.000 IMA   標準面 無限       2.842 2.842 0.000 Table 1 first embodiment f=4.24mm, FNO=1.38, FOV=67 surface number Lens name surface type Radius of curvature thickness refractive index Abbe number Net diameter Mechanical half diameter Conic factor OBJ Standard surface unlimited 10000.000 6658.219 6658.219 0.000 STO Standard surface unlimited -0.577 1.525 1.525 0.000 S2 first lens Aspherical 2.384 0.680 1.590 61.200 1.529 1.529 -21.208 S3 Aspherical 7.936 2.218 1.432 1.529 -50.000 S4 Standard surface unlimited 0.280 1.410 1.410 0.000 S5 second lens Aspherical -3.88 0.338 1.510 56.800 1.424 1.486 -7.478 S6 Aspherical -4.52 0.042 1.486 1.486 -6.519 S7 third lens Aspherical 1.776 0.256 1.670 56.800 1.545 1.608 -1.043 S8 Aspherical 1.686 0.627 1.608 1.608 -2.655 S9 fourth lens Aspherical -24.767 0.899 1.670 19.400 1.559 1.723 0.000 S10 Aspherical -2.774 0.979 1.723 1.723 -12.453 S11 Fifth lens Aspherical 3.36 0.354 1.670 19.400 2.138 2.480 -33.209 S12 Aspherical 1.379 0.302 2.480 2.480 -7.397 S13 filter Standard surface unlimited 0.210 1.520 64.200 2.691 2.735 0.000 S14 Standard surface unlimited 0.324 2.735 2.735 0.000 IMA Standard surface unlimited 2.842 2.842 0.000

表2 第一實施例 表面 K2 K4 K6 K8 K10 K12 K14 K16 S2 0.000E+00 1.830E-01 -2.280E-01 2.500E-01 -1.860E-01 8.600E-02 -2.200E-02 2.366E-03 S3 0.000E+00 7.023E-03 4.100E-02 -1.600E-01 3.060E-01 -3.420E-01 2.320E-01 -9.400E-02 S5 0.000E+00 9.100E-02 -1.310E-01 1.050E-01 -5.300E-02 1.400E-02 -1.525E-03 2.959E-05 S6 0.000E+00 5.062E-03 5.197E-03 -3.200E-02 2.900E-02 -1.300E-02 2.357E-03 -3.190E-06 S7 0.000E+00 -1.960E-01 9.000E-02 -5.000E-02 1.300E-02 -1.092E-03 -1.830E-06 1.519E-06 S8 0.000E+00 -1.170E-01 3.900E-02 -1.700E-02 1.253E-03 3.341E-04 5.141E-07 4.867E-07 S9 0.000E+00 -1.400E-02 4.356E-03 -1.600E-02 1.400E-02 -7.402E-03 1.333E-03 1.454E-06 S10 0.000E+00 -9.200E-02 6.700E-02 -4.000E-02 1.600E-02 -3.733E-03 3.966E-04 7.419E-06 S11 0.000E+00 -2.060E-01 7.500E-02 -1.000E-02 -2.024E-03 8.339E-04 -7.372E-05 2.499E-07 S12 0.000E+00 -9.500E-02 3.300E-02 -7.391E-03 7.979E-04 -3.707E-05 5.090E-07 3.552E-08 Table 2 first embodiment surface K2 K4 K6 K8 K10 K12 K14 K16 S2 0.000E+00 1.830E-01 -2.280E-01 2.500E-01 -1.860E-01 8.600E-02 -2.200E-02 2.366E-03 S3 0.000E+00 7.023E-03 4.100E-02 -1.600E-01 3.060E-01 -3.420E-01 2.320E-01 -9.400E-02 S5 0.000E+00 9.100E-02 -1.310E-01 1.050E-01 -5.300E-02 1.400E-02 -1.525E-03 2.959E-05 S6 0.000E+00 5.062E-03 5.197E-03 -3.200E-02 2.900E-02 -1.300E-02 2.357E-03 -3.190E-06 S7 0.000E+00 -1.960E-01 9.000E-02 -5.000E-02 1.300E-02 -1.092E-03 -1.830E-06 1.519E-06 S8 0.000E+00 -1.170E-01 3.900E-02 -1.700E-02 1.253E-03 3.341E-04 5.141E-07 4.867E-07 S9 0.000E+00 -1.400E-02 4.356E-03 -1.600E-02 1.400E-02 -7.402E-03 1.333E-03 1.454E-06 S10 0.000E+00 -9.200E-02 6.700E-02 -4.000E-02 1.600E-02 -3.733E-03 3.966E-04 7.419E-06 S11 0.000E+00 -2.060E-01 7.500E-02 -1.000E-02 -2.024E-03 8.339E-04 -7.372E-05 2.499E-07 S12 0.000E+00 -9.500E-02 3.300E-02 -7.391E-03 7.979E-04 -3.707E-05 5.090E-07 3.552E-08

需要說明的為,光學成像系統10的第一透鏡L1至第物透鏡L5的物側面與像側面均為非球面,各非球面的表面對應的圓錐常數k與非球面係數如表2所示,對於這些非球面的表面,非球面表面的非球面方程為:

Figure 02_image001
It should be noted that the object side surface and the image side surface of the first lens L1 to the objective lens L5 of the optical imaging system 10 are all aspherical surfaces, and the conic constant k and aspherical surface coefficient corresponding to the surface of each aspherical surface are shown in Table 2. For these aspheric surfaces, the aspheric equation for the aspheric surface is:
Figure 02_image001

其中,Z表示透鏡面中與Z軸平行的高度,r表示從頂點起的徑向距離,c表示頂點處表面的曲率,k表示圓錐常數,K2、K4、K6、K8、K10、K12分別表示2階、4階、6階、8階、10階、12階對應階次的非球面係數。Among them, Z represents the height parallel to the Z axis in the lens surface, r represents the radial distance from the vertex, c represents the curvature of the surface at the vertex, k represents the conic constant, K2, K4, K6, K8, K10, K12 represent respectively The aspheric coefficients of the corresponding orders of the 2nd, 4th, 6th, 8th, 10th, and 12th orders.

圖2為本實施例中的光學成像系統10的類比MTF對視場角性能資料圖。橫坐標表示Y場偏移角度,即光學系統100的視場相對於光軸所成的角度,單位為度;縱坐標表示OTF係數;S1與T1表示空間頻率為25cyc/mm下的曲線,S2與T2表示空間頻率為50cyc/mm下的曲線,S3與T3表示空間頻率為67cyc/mm,S4與T4表示空間頻率為100cyc/mm;其中S1與T1分別表示空間頻率為25cyc/mm在,S方向與T方向的曲線,曲線S1與T1為較低頻率下的曲線,能夠反映光學系統100的反差特性,而曲線S4與T4為較高頻率下的曲線,能夠反映光學系統100的解析度特性。FIG. 2 is a data graph of the analog MTF versus field angle performance of the optical imaging system 10 in this embodiment. The abscissa represents the Y field offset angle, that is, the angle formed by the field of view of the optical system 100 relative to the optical axis, in degrees; the ordinate represents the OTF coefficient; S1 and T1 represent the curve at a spatial frequency of 25cyc/mm, S2 and T2 represent the curve under the spatial frequency of 50cyc/mm, S3 and T3 represent the spatial frequency of 67cyc/mm, S4 and T4 represent the spatial frequency of 100cyc/mm; S1 and T1 respectively represent the spatial frequency of 25cyc/mm, S The curves in the direction and the T direction, the curves S1 and T1 are curves at lower frequencies, which can reflect the contrast characteristics of the optical system 100 , while the curves S4 and T4 are curves at higher frequencies, which can reflect the resolution characteristics of the optical system 100 .

圖3由左至右依次為本實施例中光學成像系統10的場曲曲線圖及畸變曲線圖,參考波長為1550nm。FIG. 3 is a field curvature curve diagram and a distortion curve diagram of the optical imaging system 10 in this embodiment from left to right, and the reference wavelength is 1550 nm.

由圖2與圖3的曲線可得知,光學成像系統10弧矢場曲值及子午場曲值被控制在-0.15mm~0.15mm之間,透鏡的製作更容易,降低製作成本;光學成像系統10的畸變被控制在0~10%以內,即光學成像系統10所成圖像的變形較小。由此,光學成像系統100反映類比MTF上有良好的數值,光學成像系統10具備良好的成像性能。It can be known from the curves in Fig. 2 and Fig. 3 that the sag and meridional field curvature values of the optical imaging system 10 are controlled between -0.15mm and 0.15mm, the lens is easier to manufacture and the manufacturing cost is reduced; the optical imaging system The distortion of 10 is controlled within 0-10%, that is, the distortion of the image formed by the optical imaging system 10 is small. Therefore, the optical imaging system 100 reflects a good value on the analog MTF, and the optical imaging system 10 has good imaging performance.

第二實施例Second Embodiment

請參見圖4,本實施例中的光學成像系統10中,從物側至像側包括光闌STO、具有屈折力的第一透鏡L1、具有屈折力的第二透鏡L2、具有屈折力的第三透鏡L3、具有屈折力的第四透鏡L4、具有屈折力的第五透鏡L5及濾光片L6。Referring to FIG. 4 , the optical imaging system 10 in this embodiment includes a diaphragm STO, a first lens L1 with refractive power, a second lens L2 with refractive power, and a second lens with refractive power from the object side to the image side. Three lenses L3, a fourth lens L4 with refractive power, a fifth lens L5 with refractive power, and a filter L6.

所述第一透鏡L1的物側面S2在近光軸處為凸面,所述第一透鏡L1的像側面S3在近光軸處為凹面。所述第二透鏡L2的物側面S5在近光軸處為凹面,所述第二透鏡L2的像側面S6在近光軸處為凸面。所述第三透鏡L3的物側面S7在近光軸處為凸面,所述第三透鏡L3的像側面S8在近光軸處為凹面。所述第四透鏡L4的物側面S9在近光軸處為凹面,所述第四透鏡L4的像側面S10在近光軸處為凸面。所述第五透鏡L5的物側面S11在近光軸處為凹面,所述第五透鏡L5的像側面S12在近光軸處為凹面。The object side S2 of the first lens L1 is convex at the near optical axis, and the image side S3 of the first lens L1 is concave at the near optical axis. The object side S5 of the second lens L2 is concave at the near optical axis, and the image side S6 of the second lens L2 is convex at the near optical axis. The object side S7 of the third lens L3 is convex at the near optical axis, and the image side S8 of the third lens L3 is concave at the near optical axis. The object side S9 of the fourth lens L4 is concave at the near optical axis, and the image side S10 of the fourth lens L4 is convex at the near optical axis. The object side S11 of the fifth lens L5 is concave at the near optical axis, and the image side S12 of the fifth lens L5 is concave at the near optical axis.

當光學成像系統10用於成像時,被攝物發出或反射的光線從物側方向進入光學成像系統10,並依次穿過光闌STO、第一透鏡L1、第二透鏡L2、第三透鏡L3、第四透鏡L4、第五透鏡L5及濾光片L6,最終彙聚到成像面IMA上。When the optical imaging system 10 is used for imaging, the light emitted or reflected by the subject enters the optical imaging system 10 from the object side direction, and sequentially passes through the diaphragm STO, the first lens L1, the second lens L2, and the third lens L3 , the fourth lens L4, the fifth lens L5 and the filter L6, and finally converge on the imaging plane IMA.

表3示出了本實施例的光學成像系統10的特性,f為光學成像系統10的有效焦距, FOV為光學成像系統10的最大視場角,有效焦距、折射率及阿貝數的參考波長為1550nm,曲率半徑、厚度、淨口徑及機械半直徑的單位均為毫米(mm)。Table 3 shows the characteristics of the optical imaging system 10 of the present embodiment, f is the effective focal length of the optical imaging system 10, FOV is the maximum field angle of the optical imaging system 10, and the reference wavelength of the effective focal length, refractive index and Abbe number It is 1550nm, and the units of curvature radius, thickness, net diameter and mechanical half diameter are all millimeters (mm).

表3 第二實施例  f=4.15mm,FNO=1.32,FOV=69 表面編號 鏡片名稱 表面類型 曲率半徑 厚度 折射率 阿貝數 淨口徑 機械半直徑 圓錐係數 OBJ   標準面 無限 10000     6918.823 6918.823 0.000 STO   標準面 無限 -0.589     1.530 1.530 0.000 S2 第一透鏡  非球面 2.434 0.721 1.59 61.2 1.534 1.534 -21.208 S3  非球面 8.216 0.185 1.431 1.534 -50.000 S4   標準面 無限 0.221     1.410 1.410 0.000 S5 第二透鏡  非球面 -4.432 0.399 1.51 56.8 1.422 1.475 -8.289 S6  非球面 -6.268 0.04 1.475 1.475 -5.617 S7 第三透鏡  非球面 1.76 0.279 1.67 19.4 1.508 1.622 -1.109 S8  非球面 1.588 0.471 1.622 1.622 -2.677 S9 第四透鏡  非球面 21.499 1.407 1.67 19.4 1.607 1.866 0.000 S10  非球面 -2.684 0.793 1.866 1.866 -12.671 S11 第五透鏡  非球面 3.928 0.458 1.67 19.4 2.095 2.530 -26.337 S12  非球面 1.417 0.314 2.530 2.530 -5.909 S13 濾光片 標準面 無限 0.21 1.52 64.2 2.692 2.739 0.000 S14 標準面 無限 0.31 2.739 2.739 0.000 IMA   標準面 無限       2.847 2.847 0.000 table 3 Second Embodiment f=4.15mm, FNO=1.32, FOV=69 surface number Lens name surface type Radius of curvature thickness refractive index Abbe number Net diameter Mechanical half diameter Conic factor OBJ Standard surface unlimited 10000 6918.823 6918.823 0.000 STO Standard surface unlimited -0.589 1.530 1.530 0.000 S2 first lens Aspherical 2.434 0.721 1.59 61.2 1.534 1.534 -21.208 S3 Aspherical 8.216 0.185 1.431 1.534 -50.000 S4 Standard surface unlimited 0.221 1.410 1.410 0.000 S5 second lens Aspherical -4.432 0.399 1.51 56.8 1.422 1.475 -8.289 S6 Aspherical -6.268 0.04 1.475 1.475 -5.617 S7 third lens Aspherical 1.76 0.279 1.67 19.4 1.508 1.622 -1.109 S8 Aspherical 1.588 0.471 1.622 1.622 -2.677 S9 fourth lens Aspherical 21.499 1.407 1.67 19.4 1.607 1.866 0.000 S10 Aspherical -2.684 0.793 1.866 1.866 -12.671 S11 Fifth lens Aspherical 3.928 0.458 1.67 19.4 2.095 2.530 -26.337 S12 Aspherical 1.417 0.314 2.530 2.530 -5.909 S13 filter Standard surface unlimited 0.21 1.52 64.2 2.692 2.739 0.000 S14 Standard surface unlimited 0.31 2.739 2.739 0.000 IMA Standard surface unlimited 2.847 2.847 0.000

表4 第二實施例 表面 K2 K4 K6 K8 K10 K12 K14 S2 0.000E+00 1.820E-01 -2.270E-01 2.500E-01 -1.860E-01 8.600E-02 -2.200E-02 S3 0.000E+00 6.976E-03 4.100E-02 -1.610E-01 3.060E-01 -3.420E-01 2.320E-01 S5 0.000E+00 9.100E-02 -1.310E-01 1.105E+00 -5.300E-02 1.400E-02 -1.426E-03 S6 0.000E+00 5.722E-03 5.995E-03 -3.200E-02 2.900E-02 -1.300E-02 2.370E-03 S7 0.000E+00 -1.980E-01 8.800E-02 -5.000E-02 1.300E-02 -1.145E-03 0.000E+00 S8 0.000E+00 -1.100E-01 4.100E-02 -1.700E-02 1.097E-03 2.593E-04 0.000E+00 S9 0.000E+00 -7.653E-03 5.328E-03 -1.500E-02 1.400E-02 -7.469E-03 1.280E-03 S10 0.000E+00 -9.800E-02 6.900E-02 -4.100E-02 1.600E-02 -3.735E-03 3.728E-04 S11 0.000E+00 -2.010E-01 7.200E-02 -9.968E-03 -2.006E-03 8.363E-04 -7.267E-05 S12 0.000E+00 -6.900E-02 3.300E-02 -7.380E-03 -7.380E-04 -3.651E-05 6.211E-07 Table 4 Second Embodiment surface K2 K4 K6 K8 K10 K12 K14 S2 0.000E+00 1.820E-01 -2.270E-01 2.500E-01 -1.860E-01 8.600E-02 -2.200E-02 S3 0.000E+00 6.976E-03 4.100E-02 -1.610E-01 3.060E-01 -3.420E-01 2.320E-01 S5 0.000E+00 9.100E-02 -1.310E-01 1.105E+00 -5.300E-02 1.400E-02 -1.426E-03 S6 0.000E+00 5.722E-03 5.995E-03 -3.200E-02 2.900E-02 -1.300E-02 2.370E-03 S7 0.000E+00 -1.980E-01 8.800E-02 -5.000E-02 1.300E-02 -1.145E-03 0.000E+00 S8 0.000E+00 -1.100E-01 4.100E-02 -1.700E-02 1.097E-03 2.593E-04 0.000E+00 S9 0.000E+00 -7.653E-03 5.328E-03 -1.500E-02 1.400E-02 -7.469E-03 1.280E-03 S10 0.000E+00 -9.800E-02 6.900E-02 -4.100E-02 1.600E-02 -3.735E-03 3.728E-04 S11 0.000E+00 -2.010E-01 7.200E-02 -9.968E-03 -2.006E-03 8.363E-04 -7.267E-05 S12 0.000E+00 -6.900E-02 3.300E-02 -7.380E-03 -7.380E-04 -3.651E-05 6.211E-07

圖5為本實施例中的光學成像系統10的類比MTF對視場角性能資料圖。其中,橫坐標表示Y場偏移角度,即光學系統100的視場相對於光軸所成的角度,單位為度;縱坐標表示OTF係數;S1與T1表示空間頻率25cyc/mm下的曲線,S2與T2表示空間頻率為50cyc/mm下的曲線,S3與T3表示空間頻率為67cyc/mm,S4與T4表示空間頻率為100cyc/mm;其中S1與T1分別表示空間頻率為25cyc/mm在,S方向與T方向的曲線,曲線S1與T1為較低頻率下的曲線,能夠反映光學系統100的反差特性,而曲線S4與T4為較高頻率下的曲線,能夠反映光學系統100的解析度特性。FIG. 5 is a graph showing the performance of the optical imaging system 10 in the present embodiment by an analog MTF versus a viewing angle. Among them, the abscissa represents the Y field offset angle, that is, the angle formed by the field of view of the optical system 100 relative to the optical axis, in degrees; the ordinate represents the OTF coefficient; S1 and T1 represent the curve at a spatial frequency of 25cyc/mm, S2 and T2 represent the curve with a spatial frequency of 50cyc/mm, S3 and T3 represent a spatial frequency of 67cyc/mm, S4 and T4 represent a spatial frequency of 100cyc/mm; S1 and T1 respectively represent a spatial frequency of 25cyc/mm, The curves in the S direction and the T direction, the curves S1 and T1 are curves at lower frequencies, which can reflect the contrast characteristics of the optical system 100 , while the curves S4 and T4 are curves at higher frequencies, which can reflect the resolution of the optical system 100 characteristic.

圖6由左至右依次為本實施例中光學成像系統10的場曲曲線圖及畸變曲線圖,參考波長為1550nm。FIG. 6 is a graph of field curvature and a graph of distortion of the optical imaging system 10 in this embodiment from left to right, and the reference wavelength is 1550 nm.

由圖5與圖6的曲線可得知,光學成像系統10弧矢場曲值及子午場曲值被控制在-0.15mm~0.15mm之間,透鏡的製作更容易,降低製作成本;光學成像系統10的畸變被控制在0~10%以內,即光學成像系統10所成圖像的變形較小。由此,光學成像系統100反映類比MTF上有良好的數值,光學成像系統10具備良好的成像性能。It can be seen from the curves in FIG. 5 and FIG. 6 that the sag and meridional field curvature values of the optical imaging system 10 are controlled between -0.15mm and 0.15mm, the lens is easier to manufacture and the manufacturing cost is reduced; the optical imaging system The distortion of 10 is controlled within 0-10%, that is, the distortion of the image formed by the optical imaging system 10 is small. Therefore, the optical imaging system 100 reflects a good value on the analog MTF, and the optical imaging system 10 has good imaging performance.

第三實施例Third Embodiment

請參見圖7,本實施例中的光學成像系統10中,從物側至像側包括光闌STO、具有屈折力的第一透鏡L1、具有屈折力的第二透鏡L2、具有屈折力的第三透鏡L3、具有屈折力的第四透鏡L4、具有屈折力的第五透鏡L5及濾光片L6。Referring to FIG. 7 , the optical imaging system 10 in this embodiment includes a diaphragm STO, a first lens L1 with refractive power, a second lens L2 with refractive power, and a second lens with refractive power from the object side to the image side. Three lenses L3, a fourth lens L4 with refractive power, a fifth lens L5 with refractive power, and a filter L6.

所述第一透鏡L1的物側面S2在近光軸處為凸面,所述第一透鏡L1的像側面S3在近光軸處為凹面。所述第二透鏡L2的物側面S5在近光軸處為凹面,所述第二透鏡L2的像側面S6在近光軸處為凸面。所述第三透鏡L3的物側面S7在近光軸處為凸面,所述第三透鏡L3的像側面S8在近光軸處為凹面。所述第四透鏡L4的物側面S9在近光軸處為凹面,所述第四透鏡L4的像側面S10在近光軸處為凸面。所述第五透鏡L5的物側面S11在近光軸處為凹面,所述第五透鏡L5的像側面S12在近光軸處為凹面。The object side S2 of the first lens L1 is convex at the near optical axis, and the image side S3 of the first lens L1 is concave at the near optical axis. The object side S5 of the second lens L2 is concave at the near optical axis, and the image side S6 of the second lens L2 is convex at the near optical axis. The object side S7 of the third lens L3 is convex at the near optical axis, and the image side S8 of the third lens L3 is concave at the near optical axis. The object side S9 of the fourth lens L4 is concave at the near optical axis, and the image side S10 of the fourth lens L4 is convex at the near optical axis. The object side S11 of the fifth lens L5 is concave at the near optical axis, and the image side S12 of the fifth lens L5 is concave at the near optical axis.

當光學成像系統10用於成像時,被攝物發出或反射的光線從物側方向進入光學成像系統10,並依次穿過光闌STO、第一透鏡L1、第二透鏡L2、第三透鏡L3、第四透鏡L4、第五透鏡L5及濾光片L6,最終彙聚到成像面IMA上。When the optical imaging system 10 is used for imaging, the light emitted or reflected by the subject enters the optical imaging system 10 from the object side direction, and sequentially passes through the diaphragm STO, the first lens L1, the second lens L2, and the third lens L3 , the fourth lens L4, the fifth lens L5 and the filter L6, and finally converge on the imaging plane IMA.

表5示出了本實施例的光學成像系統10的特性,f為光學成像系統10的有效焦距, FOV為光學成像系統10的最大視場角,有效焦距、折射率及阿貝數的參考波長為1550nm,曲率半徑、厚度、淨口徑及機械半直徑的單位均為毫米(mm)。Table 5 shows the characteristics of the optical imaging system 10 of the present embodiment, f is the effective focal length of the optical imaging system 10, FOV is the maximum field angle of the optical imaging system 10, and the reference wavelength of the effective focal length, refractive index and Abbe number It is 1550nm, and the units of curvature radius, thickness, net diameter and mechanical half diameter are all millimeters (mm).

表5 第三實施例  f=3.90mm,FNO=1.31,FOV=72 表面編號 鏡片名稱 表面類型 曲率半徑 厚度 折射率 阿貝數 淨口徑 機械半直徑 圓錐係數 OBJ   標準面 無限 10000     7148.718 7148.718 0.000 STO   標準面 無限 -0.59     1.525 1.525 0.000 S2 第一透鏡  非球面 2.377 0.697 1.59 61.2 1.528 1.528 -21.208 S3  非球面 8.183 0.195 1.439 1.528 -50.000 S4   標準面 無限 0.235     1.420 1.420 0.000 S5 第二透鏡  非球面 -3.68 0.358 1.51 56.8 1.430 1.476 -8.192 S6  非球面 -4.906 0.044 1.476 1.476 -9.970 S7 第三透鏡  非球面 1.758 0.272 1.67 19.4 1.503 1.620 -1.134 S8  非球面 1.635 0.47 1.620 1.620 -2.652 S9 第四透鏡  非球面 21.09 1.408 1.67 19.4 1.605 1.868 0.000 S10  非球面 -2.738 0.709 1.868 1.868 -12.334 S11 第五透鏡  非球面 3.337 0.51 1.67 19.4 2.116 2.532 -33.590 S12  非球面 1.317 0.332 2.532 2.532 -5.842 S13 濾光片 標準面 無限 0.21 1.52 64.2 2.671 2.715 0.000 S14 標準面 無限 0.281 2.715 2.715 0.000 IMA   標準面 無限       2.841 2.841 0.000 table 5 Third Embodiment f=3.90mm, FNO=1.31, FOV=72 surface number Lens name surface type Radius of curvature thickness refractive index Abbe number Net diameter Mechanical half diameter Conic factor OBJ Standard surface unlimited 10000 7148.718 7148.718 0.000 STO Standard surface unlimited -0.59 1.525 1.525 0.000 S2 first lens Aspherical 2.377 0.697 1.59 61.2 1.528 1.528 -21.208 S3 Aspherical 8.183 0.195 1.439 1.528 -50.000 S4 Standard surface unlimited 0.235 1.420 1.420 0.000 S5 second lens Aspherical -3.68 0.358 1.51 56.8 1.430 1.476 -8.192 S6 Aspherical -4.906 0.044 1.476 1.476 -9.970 S7 third lens Aspherical 1.758 0.272 1.67 19.4 1.503 1.620 -1.134 S8 Aspherical 1.635 0.47 1.620 1.620 -2.652 S9 fourth lens Aspherical 21.09 1.408 1.67 19.4 1.605 1.868 0.000 S10 Aspherical -2.738 0.709 1.868 1.868 -12.334 S11 Fifth lens Aspherical 3.337 0.51 1.67 19.4 2.116 2.532 -33.590 S12 Aspherical 1.317 0.332 2.532 2.532 -5.842 S13 filter Standard surface unlimited 0.21 1.52 64.2 2.671 2.715 0.000 S14 Standard surface unlimited 0.281 2.715 2.715 0.000 IMA Standard surface unlimited 2.841 2.841 0.000

表6 第三實施例 表面 K2 K4 K6 K8 K10 K12 K14 S2 0.000E+00 1.830E-01 -2.270E-01 2.500E-01 -1.860E-01 8.600E-02 -2.200E-02 S3 0.000E+00 7.534E-03 4.100E-02 -1.610E-01 3.070E-01 -3.420E-01 2.320E-01 S5 0.000E+00 9.200E-02 -1.310E-01 1.050E-01 -5.300E-02 1.400E-02 -1.415E-03 S6 0.000E+00 6.953E-03 5.777E-03 -3.200E-02 2.900E-02 -1.300E-02 2.360E-03 S7 0.000E+00 -1.980E-01 8.800E-02 -5.000E-02 1.300E-02 -1.224E-03 0.000E+00 S8 0.000E+00 -1.130E-01 4.000E-02 -1.800E-02 1.047E-03 2.569E-04 0.000E+00 S9 0.000E+00 -9.814E-03 5.965E-03 -1.500E-02 1.400E-02 -7.456E-03 1.281E-03 S10 0.000E+00 -1.010E-01 6.900E-02 -4.000E-02 1.600E-02 -3.744E-03 3.770E-04 S11 0.000E+00 -2.000E-01 7.200E-02 -9.867E-03 -1.992E-03 8.357E-04 -7.315E-05 S12 0.000E+00 -9.000E-02 3.400E-02 -7.456E-04 7.846E-04 -3.649E-05 8.051E-07 Table 6 Third Embodiment surface K2 K4 K6 K8 K10 K12 K14 S2 0.000E+00 1.830E-01 -2.270E-01 2.500E-01 -1.860E-01 8.600E-02 -2.200E-02 S3 0.000E+00 7.534E-03 4.100E-02 -1.610E-01 3.070E-01 -3.420E-01 2.320E-01 S5 0.000E+00 9.200E-02 -1.310E-01 1.050E-01 -5.300E-02 1.400E-02 -1.415E-03 S6 0.000E+00 6.953E-03 5.777E-03 -3.200E-02 2.900E-02 -1.300E-02 2.360E-03 S7 0.000E+00 -1.980E-01 8.800E-02 -5.000E-02 1.300E-02 -1.224E-03 0.000E+00 S8 0.000E+00 -1.130E-01 4.000E-02 -1.800E-02 1.047E-03 2.569E-04 0.000E+00 S9 0.000E+00 -9.814E-03 5.965E-03 -1.500E-02 1.400E-02 -7.456E-03 1.281E-03 S10 0.000E+00 -1.010E-01 6.900E-02 -4.000E-02 1.600E-02 -3.744E-03 3.770E-04 S11 0.000E+00 -2.000E-01 7.200E-02 -9.867E-03 -1.992E-03 8.357E-04 -7.315E-05 S12 0.000E+00 -9.000E-02 3.400E-02 -7.456E-04 7.846E-04 -3.649E-05 8.051E-07

圖8為本實施例中的光學成像系統10的類比MTF對視場角性能資料圖。橫坐標表示Y場偏移角度,即光學系統100的視場相對於光軸所成的角度,單位為度;縱坐標表示OTF係數;S1與T1表示空間頻率為25cyc/mm下的曲線,S2與T2表示空間頻率為50cyc/mm下的曲線,S3與T3表示空間頻率為67cyc/mm,S4與T4表示空間頻率為100cyc/mm;其中S1與T1分別表示空間頻率為25cyc/mm在,S方向與T方向的曲線,曲線S1與T1為較低頻率下的曲線,能夠反映光學系統100的反差特性,而曲線S4與T4為較高頻率下的曲線,能夠反映光學系統100的解析度特性。FIG. 8 is a data graph of the analog MTF versus field angle performance of the optical imaging system 10 in this embodiment. The abscissa represents the Y field offset angle, that is, the angle formed by the field of view of the optical system 100 relative to the optical axis, in degrees; the ordinate represents the OTF coefficient; S1 and T1 represent the curve at a spatial frequency of 25cyc/mm, S2 and T2 represent the curve under the spatial frequency of 50cyc/mm, S3 and T3 represent the spatial frequency of 67cyc/mm, S4 and T4 represent the spatial frequency of 100cyc/mm; S1 and T1 respectively represent the spatial frequency of 25cyc/mm, S The curves in the direction and the T direction, the curves S1 and T1 are curves at lower frequencies, which can reflect the contrast characteristics of the optical system 100 , while the curves S4 and T4 are curves at higher frequencies, which can reflect the resolution characteristics of the optical system 100 .

圖9由左至右依次為本實施例中光學成像系統10的場曲曲線圖及畸變曲線圖,參考波長為1550nm。FIG. 9 is a field curvature graph and a distortion graph of the optical imaging system 10 in this embodiment from left to right, and the reference wavelength is 1550 nm.

由圖8與圖9的曲線可得知,光學成像系統10弧矢場曲值及子午場曲值被控制在-0.15mm~0.15mm之間,透鏡的製作更容易,降低製作成本;光學成像系統10的畸變被控制在0~10%以內,即光學成像系統10所成圖像的變形較小。由此,光學成像系統100反映類比MTF上有良好的數值,光學成像系統10具備良好的成像性能。It can be seen from the curves in FIG. 8 and FIG. 9 that the sag and meridional field curvature values of the optical imaging system 10 are controlled between -0.15mm and 0.15mm, which makes the manufacture of the lens easier and reduces the manufacturing cost; the optical imaging system The distortion of 10 is controlled within 0-10%, that is, the distortion of the image formed by the optical imaging system 10 is small. Therefore, the optical imaging system 100 reflects a good value on the analog MTF, and the optical imaging system 10 has good imaging performance.

表7示出了第一實施例至第三實施例的光學成像系統中FOV/TTL、TL5、FNO、SD22/SD12、R5/CT3、FOV/f、|RS7+RS8|/|RS7-RS8|及vd1-vd2的值。Table 7 shows FOV/TTL, TL5, FNO, SD22/SD12, R5/CT3, FOV/f, |RS7+RS8|/|RS7-RS8| in the optical imaging systems of the first to third embodiments and the value of vd1-vd2.

表9 運算式 FOV/TTL TL5(mm) SD22/SD12 R5/CT3 第一實施例 12.164 0.354 1.038 6.938 第二實施例 12.525 0.458 1.031 6.308 第三實施例 12.583 0.510 1.026 6.463 運算式 FOV/f |RS7+RS8|/|RS7-RS8| vd1-vd2 FNO 第一實施例 15.802 1.252 4.4 1.38 第二實施例 16.627 0.778 4.4 1.32 第三實施例 18.462 0.77 4.4 1.31 Table 9 formula FOV/TTL TL5 (mm) SD22/SD12 R5/CT3 first embodiment 12.164 0.354 1.038 6.938 Second Embodiment 12.525 0.458 1.031 6.308 Third Embodiment 12.583 0.510 1.026 6.463 formula FOV/f |RS7+RS8|/|RS7-RS8| vd1-vd2 FNO first embodiment 15.802 1.252 4.4 1.38 Second Embodiment 16.627 0.778 4.4 1.32 Third Embodiment 18.462 0.77 4.4 1.31

請參見圖10,本申請實施例的光學成像系統10可應用於本申請實施例的取像模組100。取像模組100包括感光元件20及上述任一實施例的光學成像系統10。感光元件20設置在光學成像系統10的像側。Referring to FIG. 10 , the optical imaging system 10 of the embodiment of the present application can be applied to the imaging module 100 of the embodiment of the present application. The imaging module 100 includes the photosensitive element 20 and the optical imaging system 10 of any of the above embodiments. The photosensitive element 20 is provided on the image side of the optical imaging system 10 .

感光元件20可以採用互補金屬氧化物半導體(MMOS,Complementary Metal Oxide Semiconductor)影像感測器或者電荷耦合元件(CCD,Charge-coupled Device)。The photosensitive element 20 can be a complementary metal oxide semiconductor (MMOS, Complementary Metal Oxide Semiconductor) image sensor or a charge-coupled device (CCD, Charge-coupled Device).

上述取像模組100中的光學成像系統10可在較大視場角的同時具有較小的總長,且控制第五透鏡L5的厚度有利於壓縮光學成像系統10的總長,以進一步實現小型化的特點;且具有不同的光學特徵以應用在波長較長的紅外線範圍,以實現在偵測、辨識等領域的拍攝。The optical imaging system 10 in the above-mentioned image capturing module 100 can have a smaller overall length while having a larger field of view, and controlling the thickness of the fifth lens L5 is conducive to compressing the overall length of the optical imaging system 10 to further realize miniaturization and has different optical characteristics to be applied in the infrared range with longer wavelengths to achieve shooting in the fields of detection and identification.

請參見圖11,本申請實施例的取像模組100可應用於本申請實施例的電子裝置200。電子裝置200包括殼體210及取像模組100,取像模組100安裝在殼體210上。Referring to FIG. 11 , the imaging module 100 of the embodiment of the present application can be applied to the electronic device 200 of the embodiment of the present application. The electronic device 200 includes a casing 210 and an imaging module 100 , and the imaging module 100 is mounted on the casing 210 .

本申請實施例的電子裝置200包括但不限於為行車記錄儀、智慧手機、平板電腦、筆記型電腦、電子書籍閱讀器、便攜多媒體播放機(PMP)、便攜電話機、視頻電話機、數碼靜物相機、移動醫療裝置、可穿戴式設備、智慧門鈴偵測裝置,智慧家電偵測裝置等支援成像的電子裝置。The electronic device 200 in the embodiment of the present application includes, but is not limited to, a driving recorder, a smart phone, a tablet computer, a notebook computer, an electronic book reader, a portable multimedia player (PMP), a portable phone, a video phone, a digital still camera, Mobile medical devices, wearable devices, smart doorbell detection devices, smart home appliance detection devices and other electronic devices that support imaging.

上述電子裝置200中的光學成像系統10可在較大視場角的同時具有較小的總長,且控制第五透鏡L5的厚度有利於壓縮光學成像系統10的總長,以進一步實現小型化的特點;且具有不同的光學特徵以應用在波長較長的紅外線範圍,以實現在偵測、辨識等領域的拍攝。The optical imaging system 10 in the above electronic device 200 can have a smaller overall length while having a larger field of view, and controlling the thickness of the fifth lens L5 is beneficial to compress the overall length of the optical imaging system 10, so as to further realize the characteristics of miniaturization ; And has different optical characteristics to be applied in the infrared range with longer wavelengths to achieve shooting in the fields of detection and identification.

綜上所述,本發明符合發明專利要件,爰依法提出專利申請。惟,以上所述者僅為本發明之較佳實施例,舉凡熟悉本案技藝之人士,在爰依本發明精神所作之等效修飾或變化,皆應涵蓋於以下之如申請專利範圍內。To sum up, the present invention complies with the requirements of an invention patent, and a patent application can be filed in accordance with the law. However, the above descriptions are only preferred embodiments of the present invention, and for those who are familiar with the art of the present case, equivalent modifications or changes made in accordance with the spirit of the present invention should all be included within the scope of the following claims.

L1:第一透鏡 L2:第二透鏡 L3:第三透鏡 L4:第四透鏡 L5:第五透鏡 L6:濾光片 STO:光闌 IMA:成像面 S2、S5、S7、S9、S11、S13:物側面 S3、S6、S8、S10、S12、S14:像側面 10:光學成像系統 20:感光元件 100:取像模組 200:電子裝置 210:殼體 L1: first lens L2: Second lens L3: Third lens L4: Fourth lens L5: Fifth lens L6: Filter STO: diaphragm IMA: Imaging plane S2, S5, S7, S9, S11, S13: Object side S3, S6, S8, S10, S12, S14: like the side 10: Optical imaging system 20: Photosensitive element 100: Acquisition module 200: Electronics 210: Shell

圖1為本申請第一實施例的光學成像系統的結構圖。FIG. 1 is a structural diagram of an optical imaging system according to a first embodiment of the present application.

圖2為本申請第一實施例的光學成像系統的類比MTF對視場角性能資料圖。FIG. 2 is a data diagram showing the performance of the optical imaging system according to the first embodiment of the present application with respect to the viewing angle by an analog MTF.

圖3為本申請第一實施例的光學成像系統的場曲及畸變曲線圖。FIG. 3 is a field curvature and distortion curve diagram of the optical imaging system according to the first embodiment of the present application.

圖4為本申請第二實施例的光學成像系統的結構圖。FIG. 4 is a structural diagram of an optical imaging system according to a second embodiment of the present application.

圖5為本申請第二實施例的光學成像系統的類比MTF對視場角性能資料圖。FIG. 5 is a graph showing the performance of the analog MTF versus the viewing angle of the optical imaging system according to the second embodiment of the present application.

圖6為本申請第二實施例的光學成像系統的場曲及畸變曲線圖。FIG. 6 is a field curvature and distortion curve diagram of the optical imaging system according to the second embodiment of the present application.

圖7為本申請第三實施例的光學成像系統的結構圖。FIG. 7 is a structural diagram of an optical imaging system according to a third embodiment of the present application.

圖8為本申請第三實施例的光學成像系統的類比MTF對視場角性能資料圖。FIG. 8 is a graph showing the performance of the analog MTF versus the viewing angle of the optical imaging system according to the third embodiment of the present application.

圖9為本申請第三實施例的光學成像系統的場曲及畸變曲線圖。FIG. 9 is a field curvature and distortion curve diagram of the optical imaging system according to the third embodiment of the present application.

圖10為本申請實施例的取像模組的結構示意圖。FIG. 10 is a schematic structural diagram of an image capturing module according to an embodiment of the present application.

圖11為本申請實施例的電子裝置的結構示意圖。FIG. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

無。none.

L0:虛擬面 L0: virtual surface

L1:第一透鏡 L1: first lens

L2:第二透鏡 L2: Second lens

L3:第三透鏡 L3: Third lens

L4:第四透鏡 L4: Fourth lens

L5:第五透鏡 L5: Fifth lens

L6:濾光片 L6: Filter

STO:光闌 STO: diaphragm

IMA:成像面 IMA: Imaging plane

S2、S5、S7、S9、S11、S13:物側面 S2, S5, S7, S9, S11, S13: Object side

S3、S6、S8、S10、S12、S14:像側面 S3, S6, S8, S10, S12, S14: like the side

10:光學成像系統 10: Optical imaging system

Claims (10)

一種光學成像系統,其改良在於,由物側到像側依次包括第一透鏡、第二透鏡、第三透鏡、第四透鏡及第五透鏡,所述光學成像系統滿足以下條件式: 11/mm<FOV/TTL<13/mm;0.35mm<TL5<0.52mm;其中,FOV為所述光學成像系統的最大視場角,TTL為所述第一透鏡的物側面至所述光學成像系統的成像面在光軸上的距離,TL5為所述第五透鏡的物側面至其像側面在光軸上的距離。 An optical imaging system is improved in that it includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens in sequence from the object side to the image side, and the optical imaging system satisfies the following conditional formula: 11/mm<FOV/TTL<13/mm; 0.35mm<TL5<0.52mm; wherein, FOV is the maximum field angle of the optical imaging system, and TTL is the object side of the first lens to the optical imaging The distance of the imaging plane of the system on the optical axis, TL5 is the distance from the object side of the fifth lens to its image side on the optical axis. 如請求項1所述之光學成像系統,所述第一透鏡的物側面在近光軸處為凸面,所述第一透鏡的像側面在近光軸處為凹面;所述第二透鏡的物側面在近光軸處為凹面,所述第二透鏡的像側面在近光軸處為凸面;所述第三透鏡的物側面在近光軸處為凸面,所述第三透鏡的像側面在近光軸處為凹面;所述第四透鏡的物側面在近光軸處為凹面,所述第四透鏡的像側面在近光軸處為凸面;所述第五透鏡的物側面在近光軸處為凹面,所述第五透鏡的像側面在近光軸處為凹面。According to the optical imaging system of claim 1, the object side of the first lens is convex at the near optical axis, and the image side of the first lens is concave at the near optical axis; the object side of the second lens is concave; The side surface is concave at the near optical axis, the image side surface of the second lens is convex at the near optical axis; the object side surface of the third lens is convex at the near optical axis, and the image side surface of the third lens is at the near optical axis. The object side of the fourth lens is concave at the near optical axis; the object side of the fourth lens is concave at the near optical axis, and the image side of the fourth lens is convex at the near optical axis; the object side of the fifth lens is at the low beam The axis is concave, and the image side surface of the fifth lens is concave at the near optical axis. 如請求項1所述之光學成像系統,所述光學成像系統滿足以下條件式:1.0<SD22/SD12<1.1;其中,SD22為所述第二透鏡的像側面的有效半直徑,SD12為所述第一透鏡的像側面的有效半直徑。The optical imaging system according to claim 1, the optical imaging system satisfies the following conditional formula: 1.0<SD22/SD12<1.1; wherein, SD22 is the effective half diameter of the image side surface of the second lens, SD12 is the The effective half diameter of the image side of the first lens. 如請求項1所述之光學成像系統,所述光學成像系統滿足以下條件式:6.3<R5/CT3<7.0;其中,R5為所述第三透鏡的物側面在近光軸處的曲率半徑,CT3為所述第三透鏡的物側面至所述第三透鏡的像側面在光軸上的距離。The optical imaging system according to claim 1, wherein the optical imaging system satisfies the following conditional formula: 6.3<R5/CT3<7.0; wherein, R5 is the radius of curvature of the object side surface of the third lens at the near optical axis, CT3 is the distance on the optical axis from the object side of the third lens to the image side of the third lens. 如請求項1所述之光學成像系統,所述光學成像系統滿足以下關係式:15.5°/mm <FOV/f<18.5°/mm;其中,FOV為所述光學成像系統的最大視場角,f為所述光學成像系統的有效焦距。The optical imaging system according to claim 1, the optical imaging system satisfies the following relationship: 15.5°/mm <FOV/f<18.5°/mm; wherein, FOV is the maximum field of view of the optical imaging system, f is the effective focal length of the optical imaging system. 如請求項1所述之光學成像系統,所述光學成像系統滿足以下關係式:0.7<|RS7+RS8|/|RS7-RS8|<1.3;其中,RS7為所述第四透鏡的物側面在近光軸處的曲率半徑,RS8為所述第四透鏡的像側面在近光軸處的曲率半徑。The optical imaging system according to claim 1, wherein the optical imaging system satisfies the following relation: 0.7<|RS7+RS8|/|RS7-RS8|<1.3; wherein, RS7 is the object side of the fourth lens at The curvature radius at the near optical axis, RS8 is the curvature radius of the image side surface of the fourth lens at the near optical axis. 如請求項1所述之光學成像系統,所述光學成像系統滿足以下條件式:4<vd1-vd2<5;其中,vd1為所述第一透鏡的阿貝數,vd2為所述第二透鏡的阿貝數。The optical imaging system according to claim 1, wherein the optical imaging system satisfies the following conditional formula: 4<vd1-vd2<5; wherein, vd1 is the Abbe number of the first lens, and vd2 is the second lens the Abbe number. 如請求項1所述之光學成像系統,所述光學成像系統滿足以下條件式:1.2< FNO <1.4;其中,FNO為所述光學成像系統的光圈數。The optical imaging system according to claim 1, wherein the optical imaging system satisfies the following conditional formula: 1.2<FNO<1.4; wherein, FNO is the aperture number of the optical imaging system. 一種取像模組,包括: 請求項1至8中任意一項所述的光學成像系統;及 感光元件,所述感光元件設置在所述光學成像系統的像側。 An imaging module, comprising: The optical imaging system of any one of claims 1 to 8; and A photosensitive element, the photosensitive element is arranged on the image side of the optical imaging system. 一種電子裝置,包括: 殼體;及 如請求項9所述的取像模組,所述取像模組安裝在所述殼體上。 An electronic device, comprising: the shell; and The imaging module according to claim 9, wherein the imaging module is mounted on the casing.
TW110116439A 2021-02-26 2021-05-06 Optical imaging system, acquisition module and electronic device TWI766675B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110220854.0A CN114967042A (en) 2021-02-26 2021-02-26 Optical imaging system, image capturing module and electronic device
CN202110220854.0 2021-02-26

Publications (2)

Publication Number Publication Date
TWI766675B TWI766675B (en) 2022-06-01
TW202234115A true TW202234115A (en) 2022-09-01

Family

ID=82974002

Family Applications (1)

Application Number Title Priority Date Filing Date
TW110116439A TWI766675B (en) 2021-02-26 2021-05-06 Optical imaging system, acquisition module and electronic device

Country Status (2)

Country Link
CN (1) CN114967042A (en)
TW (1) TWI766675B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI487939B (en) * 2013-11-08 2015-06-11 Largan Precision Co Ltd Optical photographing lens assembly, image capturing device and electronic mobile terminal
TWI485425B (en) * 2014-05-26 2015-05-21 Largan Precision Co Ltd Imaging optical system, image capturing device and mobile terminal
TWM589285U (en) * 2019-07-09 2020-01-11 紘立光電股份有限公司 Optical imaging lens, imaging device and electronic device having the same

Also Published As

Publication number Publication date
CN114967042A (en) 2022-08-30
TWI766675B (en) 2022-06-01

Similar Documents

Publication Publication Date Title
TWI440881B (en) Optical image capturing lens system
CN108594407A (en) Pick-up lens
TW201816460A (en) Micro imaging system, imaging apparatus and electronic device
CN208521055U (en) Pick-up lens
KR20190080526A (en) Optical imaging system
CN113204103B (en) Optical imaging lens and camera device
WO2022056934A1 (en) Optical imaging system, image capturing module, and electronic device
TW202026689A (en) Optical imaging lens, imaging device, and electronic device
TW202232176A (en) Optical imaging system, imaging module and electronic device
TWI689747B (en) Four-piece dual waveband optical lens system
CN112034593A (en) Optical imaging system, image capturing module and electronic device
TWI793570B (en) Optical imaging system,acquisition module and electronic equipment
TWI766675B (en) Optical imaging system, acquisition module and electronic device
CN212540866U (en) Optical imaging system, image capturing module and electronic device
TW202234117A (en) Optical lens system and photographing module
TWI778904B (en) Optical lens assembly and photographing module
TWI783686B (en) Photographing module
TWI765684B (en) Optical imaging system, imaging module and electronic device
TWI764718B (en) Optical imaging system, acquisition module and electronic equipment
TW202234112A (en) Optical imaging system, acquisition module and electronic device
TWI766671B (en) Optical imaging system, acquisition module and electronic equipment
TWI765660B (en) Optical imaging system,acquisition module and electronic equipment
CN116819732B (en) Optical system, camera module and electronic equipment
TWI819742B (en) Optical lens assembly and photographing module
US20240310604A1 (en) Optical lens assembly and photographing module