TWI792202B - Lens assembly - Google Patents
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Abstract
Description
本發明係有關於一種成像鏡頭。 The invention relates to an imaging lens.
現今的成像鏡頭之發展趨勢，除了不斷朝向小型化及高解析度發展外，隨著不同的應用需求，還需具備抗環境溫度變化的能力，習知的成像鏡頭已經無法滿足現今的需求，需要有另一種新架構的成像鏡頭，才能同時滿足小型化、高解析度及抗環境溫度變化的需求。 The development trend of today's imaging lenses, in addition to the continuous development towards miniaturization and high resolution, with different application requirements, it is also necessary to have the ability to resist changes in environmental temperature. Conventional imaging lenses can no longer meet today's needs. There is another imaging lens with a new structure to meet the needs of miniaturization, high resolution and resistance to environmental temperature changes at the same time.
有鑑於此，本發明之主要目的在於提供一種成像鏡頭，其鏡頭總長度較短、光圈值較小、解析度較高、抗環境溫度變化，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 an imaging lens, which has a short total length, a small aperture value, high resolution, and resistance to environmental temperature changes, but still has good optical performance.
本發明提供一種成像鏡頭包括一第一透鏡、一第二透鏡、一第三透鏡、一第四透鏡及一第五透鏡。第一透鏡為彎月型透鏡具有負屈光力。第二透鏡為彎月型透鏡具有正屈光力，且包括一凹面朝向一物側及一凸面朝向一像側。第三透鏡為彎月型透鏡具有正屈光力。第四透鏡具有正屈光力，且包括一凸面朝向物側。第五透鏡具有正屈光力。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。 The invention provides an imaging lens including a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens is a meniscus lens with negative refractive power. The second lens is a meniscus lens with positive refractive power, and includes a concave surface facing an object side and a convex surface facing an image side. The third lens is a meniscus lens with positive refractive power. The fourth lens has positive refractive power and includes a convex surface facing the object side. The fifth lens has positive refractive power. 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.
其中第一透鏡包括一凸面朝向物側及一凹面朝向像側，第三透鏡包括一凹面朝向物側及一凸面朝向像側。 The first lens includes a convex surface facing the object side and a concave surface facing the image side, and the third lens includes a concave surface facing the object side and a convex surface facing the image side.
其中第四透鏡為彎月型透鏡，且可更包括一凹面朝向像側，第五透鏡為雙凸透鏡，且包括一凸面朝向物側及另一凸面朝向像側。 The fourth lens is a meniscus lens and may further include a concave surface facing the image side, the fifth lens is a biconvex lens and includes a convex surface facing the object side and another convex surface facing the image side.
其中第四透鏡為雙凸透鏡，且可更包括另一凸面朝向像側，第五透鏡為彎月型透鏡，且包括一凹面朝向物側。 The fourth lens is a biconvex lens and may further include another convex surface facing the image side, and the fifth lens is a meniscus lens and includes a concave surface facing the object side.
其中第二透鏡包括一非球面表面，第五透鏡包括一非球面表面。 Wherein the second lens includes an aspheric surface, and the fifth lens includes an aspheric surface.
本發明之成像鏡頭可更包括一光圈，設置於第二透鏡與第三透鏡之間。 The imaging lens of the present invention may further include an aperture disposed between the second lens and the third lens.
其中成像鏡頭滿足以下條件：0.1<ψST/TTL<0.5；其中，ψST為光圈之一孔徑，TTL為第一透鏡之一物側面至一成像面於光軸上之一間距。 The imaging lens satisfies the following conditions: 0.1<ψST/TTL<0.5; wherein, ψST is an aperture of the aperture, and TTL is the distance between the object side of the first lens and an imaging surface on the optical axis.
本發明提供另一種成像鏡頭包括一第一透鏡、一第二透鏡、一第三透鏡、一第四透鏡及一第五透鏡。第一透鏡為彎月型透鏡具有負屈光力。第二透鏡為彎月型透鏡具有正屈光力。第三透鏡為彎月型透鏡具有正屈光力。第四透鏡具有正屈光力。第五透鏡具有屈光力為單一透鏡，第五透鏡與第四透鏡之間包括一空氣間隔。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一物側至像側依序排列。 The present invention provides another imaging lens including a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens is a meniscus lens with negative refractive power. The second lens is a meniscus lens with positive refractive power. The third lens is a meniscus lens with positive refractive power. The fourth lens has positive refractive power. The fifth lens has a single refractive power, and there is an air space between the fifth lens and the fourth lens. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged along an optical axis from an object side to an image side.
其中成像鏡頭滿足以下條件：-3<f1/f<-1.5；其中，f1為第一透鏡之一有效焦距，f為成像鏡頭之一有效焦距。 The imaging lens satisfies the following condition: -3<f 1 /f<-1.5; wherein, f 1 is an effective focal length of one of the first lenses, and f is an effective focal length of one of the imaging lenses.
其中成像鏡頭滿足以下條件：0.5<ET5/T5<1.5；其中，ET5 為第五透鏡之一邊緣厚度，T5為第五透鏡於該光軸上之一厚度。 The imaging lens satisfies the following condition: 0.5<ET 5 /T 5 <1.5; wherein, ET 5 is an edge thickness of the fifth lens, and T 5 is a thickness of the fifth lens on the optical axis.
其中成像鏡頭滿足以下條件：0.3<ψ2/ψ3<0.8；其中，ψ2為第二透鏡之一最大光學有效直徑，ψ3為第三透鏡之一最大光學有效直徑。 The imaging lens satisfies the following condition: 0.3<ψ2/ψ3<0.8; wherein, ψ2 is the maximum optical effective diameter of one of the second lenses, and ψ3 is the maximum optical effective diameter of one of the third lenses.
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-mentioned objects, features, and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below and described in detail in conjunction with the accompanying drawings.
1、2、3:成像鏡頭 1, 2, 3: Imaging lens
L11、L21、L31:第一透鏡 L11, L21, L31: first lens
L12、L22、L32:第二透鏡 L12, L22, L32: second lens
ST1、ST2、ST3:光圈 ST1, ST2, ST3: Aperture
L13、L23、L33:第三透鏡 L13, L23, L33: third lens
L14、L24、L34:第四透鏡 L14, L24, L34: fourth lens
L15、L25、L35:第五透鏡 L15, L25, L35: fifth lens
OF1、OF2、OF3:濾光片 OF1, OF2, OF3: Filters
CG1、CG2、CG3:保護玻璃 CG1, CG2, CG3: Protective glass
IMA1、IMA2、IMA3:成像面 IMA1, IMA2, IMA3: imaging surface
OA1、OA2、OA3:光軸 OA1, OA2, OA3: optical axis
S11、S21、S31:第一透鏡物側面 S11, S21, S31: the object side of the first lens
S12、S22、S32:第一透鏡像側面 S12, S22, S32: the side of the first lens image
S13、S23、S33:第二透鏡物側面 S13, S23, S33: second lens object side
S14、S24、S34:第二透鏡像側面 S14, S24, S34: the second lens image side
S15、S25、S35:光圈面 S15, S25, S35: aperture surface
S16、S26、S36:第三透鏡物側面 S16, S26, S36: third lens object side
S17、S27、S37:第三透鏡像側面 S17, S27, S37: the side of the third lens image
S18、S28、S38:第四透鏡物側面 S18, S28, S38: the object side of the fourth lens
S19、S29、S39:第四透鏡像側面 S19, S29, S39: the side of the fourth lens image
S110、S210、S310:第五透鏡物側面 S110, S210, S310: the object side of the fifth lens
S111、S211、S311:第五透鏡像側面 S111, S211, S311: the side image of the fifth lens
S112、S212、S312:濾光片物側面 S112, S212, S312: Filter object side
S113、S213、S313:濾光片像側面 S113, S213, S313: The side of the filter image
S114、S214、S314:保護玻璃物側面 S114, S214, S314: protect the side of the glass object
S115、S215、S315:保護玻璃像側面 S115, S215, S315: protective glass like side
第1圖係依據本發明之成像鏡頭之第一實施例的透鏡配置示意圖。 FIG. 1 is a schematic diagram of the lens configuration of the first embodiment of the imaging lens according to the present invention.
第2A圖係依據本發明之成像鏡頭之第一實施例的縱向像差(Longitudinal Aberration)圖。 FIG. 2A is a diagram of the longitudinal aberration (Longitudinal Aberration) of the first embodiment of the imaging lens according to the present invention.
第2B圖係依據本發明之成像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 imaging lens according to the present invention.
第2C圖係依據本發明之成像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 imaging lens according to the present invention.
第3圖係依據本發明之成像鏡頭之第二實施例的透鏡配置示意圖。 FIG. 3 is a schematic diagram of the lens configuration of the second embodiment of the imaging lens according to the present invention.
第4A圖係依據本發明之成像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 imaging lens according to the present invention.
第4B圖係依據本發明之成像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 imaging lens according to the present invention.
第4C圖係依據本發明之成像鏡頭之第二實施例的畸變圖。 FIG. 4C is a distortion diagram of the second embodiment of the imaging lens according to the present invention.
第5圖係依據本發明之成像鏡頭之第三實施例的透鏡配置示意圖。 FIG. 5 is a schematic diagram of the lens configuration of the third embodiment of the imaging lens according to the present invention.
第6A圖係依據本發明之成像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 imaging lens according to the present invention.
第6B圖係依據本發明之成像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 imaging lens according to the present invention.
第6C圖係依據本發明之成像鏡頭之第三實施例的畸變圖。 FIG. 6C is a distortion diagram of the third embodiment of the imaging lens according to the present invention.
本發明提供一種成像鏡頭，包括：一第一透鏡、一第二透鏡、一第三透鏡、一第四透鏡及一第五透鏡；其中第一透鏡為彎月型透鏡具有負屈光力；其中第二透鏡為彎月型透鏡具有正屈光力，且包括一凹面朝向一物側及一凸面朝向一像側；其中第三透鏡為彎月型透鏡具有正屈光力；其中第四透鏡具有正屈光力，且包括一凸面朝向物側；其中第五透鏡具有正屈光力；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。 The present invention provides an imaging lens, comprising: a first lens, a second lens, a third lens, a fourth lens and a fifth lens; wherein the first lens is a meniscus lens with negative refractive power; wherein the second The lens is a meniscus lens with positive refractive power, and includes a concave surface facing an object side and a convex surface facing an image side; wherein the third lens is a meniscus lens with positive refractive power; wherein the fourth lens has positive refractive power, and includes a The convex surface faces the object side; the fifth lens has positive refractive power; the first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in sequence along an optical axis from the object side to the image side.
本發明提供另一種成像鏡頭，包括：一第一透鏡、一第二透鏡、一第三透鏡、一第四透鏡及一第五透鏡；其中第一透鏡為彎月型透鏡具有負屈光力；其中第二透鏡為彎月型透鏡具有正屈光力；其中第三透鏡為彎月型透鏡具有正屈光力；其中第四透鏡具有正屈光力；其中第五透鏡具有屈光力為單一透鏡，第五透鏡與第四透鏡之間包括一空氣間隔；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一物側至像側依序排列。 The present invention provides another imaging lens, comprising: a first lens, a second lens, a third lens, a fourth lens and a fifth lens; wherein the first lens is a meniscus lens with negative refractive power; wherein the first lens is a meniscus lens with negative refractive power; The second lens is a meniscus lens with positive refractive power; the third lens is a meniscus lens with positive refractive power; the fourth lens has positive refractive power; and the fifth lens has a single lens with refractive power. The space includes an air space; wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in sequence along an optical axis from an object side to an image side.
請參閱底下表一、表二、表四、表五、表七及表八，其中表一、表四及表七分别為依據本發明之成像鏡頭之第一實施例至第三實施例的各透鏡之相關參數表，表二、表五及表八分别為表一、表四及表七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, and Table 8 below, wherein Table 1, Table 4, and Table 7 are the first to third embodiments of the imaging lens according to the present invention. Table 2, Table 5, and Table 8 are related parameter tables of the lens, and Table 1, Table 4, and Table 7 are the relevant parameter tables of the aspheric surface of the aspheric lens in Table 1, Table 4, and Table 7, respectively.
第1、3、5圖分別為本發明之成像鏡頭之第一、二、三實施例的透鏡配置示意圖，其中第一透鏡L11、L21、L31為彎月型透鏡具有負屈光力，由玻璃材質製成，其物側面S11、S21、S31為凸面，像側面S12、 S22、S32為凹面，物側面S11、S21、S31與像側面S12、S22、S32皆為球面表面。 Figures 1, 3, and 5 are schematic diagrams of lens configurations of the first, second, and third embodiments of the imaging lens of the present invention, wherein the first lenses L11, L21, and L31 are meniscus lenses with negative refractive power and are made of glass. into, its side surfaces S11, S21, S31 are convex, like side surfaces S12, S22 , S32 are concave surfaces, object side S11 , S21 , S31 and image side S12 , S22 , S32 are all spherical surfaces.
第二透鏡L12、L22、L32為彎月型透鏡具有正屈光力，由玻璃材質製成，其物側面S13、S23、S33為凹面，像側面S14、S24、S34為凸面，物側面S13、S23、S33與像側面S14、S24、S34皆為非球面表面。 The second lens L12, L22, L32 is a meniscus lens with positive refractive power, made of glass material, the object side S13, S23, S33 is concave, the image side S14, S24, S34 is convex, and the object side S13, S23, S33 and image sides S14 , S24 , and S34 are all aspheric surfaces.
第三透鏡L13、L23、L33為彎月型透鏡具有正屈光力，由玻璃材質製成，其物側面S16、S26、S36為凹面，像側面S17、S27、S37為凸面，物側面S16、S26、S36與像側面S17、S27、S37皆為球面表面。 The third lens L13, L23, L33 is a meniscus lens with positive refractive power, made of glass material, its object side S16, S26, S36 is concave, image side S17, S27, S37 is convex, object side S16, S26, S36 and image sides S17 , S27 , and S37 are all spherical surfaces.
第四透鏡L14、L24、L34具有正屈光力，由玻璃材質製成，其物側面S18、S28、S38為凸面，物側面S18、S28、S38與像側面S19、S29、S39皆為球面表面。 The fourth lenses L14, L24, L34 have positive refractive power and are made of glass. The object sides S18, S28, S38 are convex, and the object sides S18, S28, S38 and image sides S19, S29, S39 are all spherical surfaces.
第五透鏡L15、L25、L35具有正屈光力，由玻璃材質製成，其像側面S111、S211、S311為凸面，物側面S110、S210、S310與像側面S111、S211、S311皆為非球面表面。 The fifth lenses L15, L25, L35 have positive refractive power and are made of glass. The image sides S111, S211, S311 are convex, and the object sides S110, S210, S310 and image sides S111, S211, S311 are all aspheric surfaces.
另外，成像鏡頭1、2、3至少滿足以下其中一條件：
In addition,
-3<f1/f<-1.5；(1) -3<f 1 /f<-1.5; (1)
0.5<ET5/T5<1.5；(2) 0.5<ET 5 /T 5 <1.5; (2)
0.3<ψ2/ψ3<0.8；(3) 0.3<ψ2/ψ3<0.8; (3)
0.1<ψST/TTL<0.5；(4) 0.1<ψST/TTL<0.5; (4)
其中，f1為第一實施例至第三實施例中，第一透鏡L11、L21、L31之一有效焦距，f為第一實施例至第三實施例中，成像鏡頭1、2、3之一有效焦距，ET5為第一實施例至第三實施例中，第五透鏡L15、L25、
L35之一邊緣厚度，T5為第一實施例至第三實施例中，第五透鏡L15、L25、L35於光軸OA1、OA2、OA3上之一厚度，ψ2為第一實施例至第三實施例中，第二透鏡L12、L22、L32之一最大光學有效直徑，ψ3為第一實施例至第三實施例中，第三透鏡L13、L23、L33之一最大光學有效直徑，ψST為第一實施例至第三實施例中，光圈ST1、ST2、ST3之一孔徑，TTL為第一實施例至第三實施例中，第一透鏡L11、L21、L31之物側面S11、S21、S31分別至成像面IMA1、IMA2、IMA3於光軸OA1、OA2、OA3上之一間距。使得成像鏡頭1、2、3能有效的縮短鏡頭總長度、有效的提升解析度、有效的抗環境溫度變化、有效的修正像差。
Wherein, f1 is the effective focal length of one of the first lenses L11, L21, and L31 in the first embodiment to the third embodiment, and f is one of the
當滿足條件(1)：-3<f1/f<-1.5時，可有效增加視場。 When the condition (1) is satisfied: -3<f 1 /f<-1.5, the field of view can be effectively increased.
當滿足條件(2)：0.5<ET5/T5<1.5時，可有效增強加工性。 When the condition (2): 0.5<ET 5 /T 5 <1.5 is satisfied, the workability can be effectively enhanced.
當滿足條件(3)：0.3<ψ2/ψ3<0.8時，可有效增大成像範圍。 When the condition (3): 0.3<ψ2/ψ3<0.8 is satisfied, the imaging range can be effectively increased.
當滿足條件(4)：0.1<ψST/TTL<0.5時，可有效縮小光圈值。 When the condition (4) is satisfied: 0.1<ψST/TTL<0.5, the aperture value can be effectively reduced.
全玻璃透鏡之設計，能有效的抗環境溫度變化，使成像鏡頭於高溫或低溫環境下仍具有良好的光學性能，長時間使用後較不易劣化仍具有良好的光學性能。 The design of the all-glass lens can effectively resist changes in ambient temperature, so that the imaging lens still has good optical performance in high or low temperature environments, and it is less likely to deteriorate after long-term use and still has good optical performance.
現詳細說明本發明之成像鏡頭之第一實施例。請參閱第1圖，成像鏡頭1沿著一光軸OA1從一物側至一像側依序包括一第一透鏡L11、一第二透鏡L12、一光圈ST1、一第三透鏡L13、一第四透鏡L14、一第五透鏡L15、一濾光片OF1及一保護玻璃CG1。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】第一至八段落，其中：
The first embodiment of the imaging lens of the present invention will now be described in detail. Please refer to FIG. 1 , the
第四透鏡L14為彎月型透鏡，其像側面S19為凹面；第五 透鏡L15為雙凸透鏡，其物側面S110為凸面； The fourth lens L14 is a meniscus lens, and its image side S19 is concave; the fifth The lens L15 is a biconvex lens, and its object side S110 is a convex surface;
濾光片OF1其物側面S112與像側面S113皆為平面； The object side S112 and the image side S113 of the optical filter OF1 are both planes;
保護玻璃CG1其物側面S114與像側面S115皆為平面； The object side S114 and the image side S115 of the protective glass CG1 are both plane;
利用上述透鏡、光圈ST1及至少滿足條件(1)至條件(4)其中一條件之設計，使得成像鏡頭1能有效的縮短鏡頭總長度、有效的提升解析度、有效的抗環境溫度變化、有效的修正像差。
Utilizing the above-mentioned lens, aperture ST1 and the design satisfying at least one of the conditions (1) to (4), the
表一為第1圖中成像鏡頭1之各透鏡之相關參數表。
Table 1 is a table of relevant parameters of each lens of the
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： The concavity z of the aspheric surface of the aspheric lens in Table 1 is obtained by the following formula:
z=ch2/{1+[1-(k+1)c2h2]1/2}+Ah4+Bh6+Ch8 z=ch 2 /{1+[1-(k+1)c 2 h 2 ] 1/2 }+Ah 4 +Bh 6 +Ch 8
其中： in:
c：曲率； c: curvature;
h：透鏡表面任一點至光軸之垂直距離； h: the vertical distance from any point on the lens surface to the optical axis;
k：圓錐係數； k: conic coefficient;
A~C：非球面係數。 A~C: Aspherical 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 list 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.
表三為第一實施例之成像鏡頭1之相關參數值及其對應條件(1)至條件(4)之計算值，由表三可知，第一實施例之成像鏡頭1皆能滿足條件(1)至條件(4)之要求。
Table 3 shows the relevant parameter values of the
另外，第一實施例之成像鏡頭1的光學性能也可達到要求，由第2A圖可看出，第一實施例之成像鏡頭1其縱向像差介於-0.001mm至0.015mm之間。由第2B圖可看出，第一實施例之成像鏡頭1其場曲介於-0.04mm至0.05mm之間。由第2C圖可看出，第一實施例之成像鏡頭1其畸變介於-70%至0%之間。
In addition, the optical performance of the
顯見第一實施例之成像鏡頭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。
Obviously, the longitudinal aberration, curvature of field and distortion of the
請參閱第3圖，成像鏡頭2沿著一光軸OA2從一物側至一像側依序包括一第一透鏡L21、一第二透鏡L22、一光圈ST2、一第三透鏡L23、一第四透鏡L24、一第五透鏡L25、一濾光片OF2及一保護玻璃CG2。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】第一至八段落，其中：
Please refer to FIG. 3, the
第四透鏡L24為彎月型透鏡，其像側面S29為凹面；第五透鏡L25為雙凸透鏡，其物側面S210為凸面； The fourth lens L24 is a meniscus lens, and its image side S29 is concave; the fifth lens L25 is a biconvex lens, and its object side S210 is convex;
濾光片OF2其物側面S212與像側面S213皆為平面； The object side S212 and the image side S213 of the optical filter OF2 are both planes;
保護玻璃CG2其物側面S214與像側面S215皆為平面； The object side S214 and the image side S215 of the protective glass CG2 are both plane;
利用上述透鏡、光圈ST2及至少滿足條件(1)至條件(4)其中一條件之設計，使得成像鏡頭2能有效的縮短鏡頭總長度、有效的提升解析度、有效的抗環境溫度變化、有效的修正像差。
Utilizing the above-mentioned lens, aperture ST2 and the design satisfying at least one of the conditions (1) to (4), the
表四為第3圖中成像鏡頭2之各透鏡之相關參數表。
Table 4 is a table of relevant parameters of each lens of the
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 aspheric surface concavity z of the aspheric lens in Table 4 is the same as the definition of the aspheric surface concavity z of the aspheric 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 list 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.
表六為第二實施例之成像鏡頭2之相關參數值及其對應條件(1)至條件(4)之計算值，由表六可知，第二實施例之成像鏡頭2皆能滿足條件(1)至條件(4)之要求。
Table 6 shows the relevant parameter values of the
另外，第二實施例之成像鏡頭2的光學性能也可達到要求，由第4A圖可看出，第二實施例之成像鏡頭2其縱向像差介於-0.01mm至0.04mm之間。由第4B圖可看出，第二實施例之成像鏡頭2其場曲介於-0.04mm至0.05mm之間。由第4C圖可看出，第二實施例之成像鏡頭2其畸變介於
-70%至0%之間。
In addition, the optical performance of the
顯見第二實施例之成像鏡頭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, curvature of field, and distortion of the
請參閱第5圖，成像鏡頭3沿著一光軸OA3從一物側至一像側依序包括一第一透鏡L31、一第二透鏡L32、一光圈ST3、一第三透鏡L33、一第四透鏡L34、一第五透鏡L35、一濾光片OF3及一保護玻璃CG3。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】第一至八段落，其中：
Please refer to FIG. 5, the
第四透鏡L34為雙凸透鏡，其像側面S39為凸面；第五透鏡L35為彎月型透鏡，其物側面S310為凹面； The fourth lens L34 is a biconvex lens, and its image side S39 is a convex surface; the fifth lens L35 is a meniscus lens, and its object side S310 is a concave surface;
濾光片OF3其物側面S312與像側面S313皆為平面； The object side S312 and the image side S313 of the optical filter OF3 are both planes;
保護玻璃CG3其物側面S314與像側面S315皆為平面； The object side S314 and the image side S315 of the protective glass CG3 are both plane;
利用上述透鏡、光圈ST3及至少滿足條件(1)至條件(4)其中一條件之設計，使得成像鏡頭3能有效的縮短鏡頭總長度、有效的提升解析度、有效的抗環境溫度變化、有效的修正像差。
Utilize above-mentioned lens, aperture ST3 and the design that satisfies at least one of condition (1) to condition (4), make
表七為第5圖中成像鏡頭3之各透鏡之相關參數表。
Table 7 is a table of relevant parameters of each lens of the
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 aspheric surface concavity z of the aspheric lens in Table 7 is the same as the definition of the aspheric surface concavity z of the aspheric lens in Table 1 of 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 list 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.
表九為第三實施例之成像鏡頭3之相關參數值及其對應條件(1)至條件(4)之計算值，由表九可知，第三實施例之成像鏡頭3皆能滿足條件(1)至條件(4)之要求。
Table 9 shows the relevant parameter values of the
另外，第三實施例之成像鏡頭3的光學性能也可達到要求，由第6A圖可看出，第三實施例之成像鏡頭3其縱向像差介於-0.001mm至
0.045mm之間。由第6B圖可看出，第三實施例之成像鏡頭3其場曲介於-0.03mm至0.07mm之間。由第6C圖可看出，第三實施例之成像鏡頭3其畸變介於-70%至0%之間。
In addition, the optical performance of the
顯見第三實施例之成像鏡頭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, curvature of field, and distortion of the
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 above in terms of implementation, it is not intended to limit the present invention. Any skilled person can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be defined by the scope of the appended patent application.
1:成像鏡頭 1: Imaging lens
L11:第一透鏡 L11: first lens
L12:第二透鏡 L12: second lens
ST1:光圈 ST1: Aperture
L13:第三透鏡 L13: third lens
L14:第四透鏡 L14: Fourth lens
L15:第五透鏡 L15: fifth lens
OF1:濾光片 OF1: filter
CG1:保護玻璃 CG1: Protective glass
IMA1:成像面 IMA1: imaging surface
OA1:光軸 OA1: optical axis
S11:第一透鏡物側面 S11: The object side of the first lens
S12:第一透鏡像側面 S12: The first lens image side
S13:第二透鏡物側面 S13: Second lens object side
S14:第二透鏡像側面 S14: The second lens image side
S15:光圈面 S15: Aperture surface
S16:第三透鏡物側面 S16: third lens object side
S17:第三透鏡像側面 S17: The third lens looks like a side
S18:第四透鏡物側面 S18: The fourth lens object side
S19:第四透鏡像側面 S19: The fourth lens image side
S110:第五透鏡物側面 S110: The object side of the fifth lens
S111:第五透鏡像側面 S111: The fifth lens image side
S112:濾光片物側面 S112: Filter object side
S113:濾光片像側面 S113: Filter image side
S114:保護玻璃物側面 S114: Protect the side of the glass object
S115:保護玻璃像側面 S115: Protective glass like side
Claims (11)
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| TW110107018A TWI792202B (en) | 2021-02-26 | 2021-02-26 | Lens assembly |
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| TW110107018A TWI792202B (en) | 2021-02-26 | 2021-02-26 | Lens assembly |
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| TWI792202B true TWI792202B (en) | 2023-02-11 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107272165A (en) * | 2017-08-15 | 2017-10-20 | 浙江舜宇光学有限公司 | Imaging lens system group |
| US20180045918A1 (en) * | 2016-08-12 | 2018-02-15 | Samsung Electronics Co., Ltd. | Optical lens assembly and electronic device including the same |
| TWM581700U (en) * | 2019-04-11 | 2019-08-01 | 紘立光電股份有限公司 | Optical imaging lens and imaging device |
| CN112230371A (en) * | 2020-10-26 | 2021-01-15 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180045918A1 (en) * | 2016-08-12 | 2018-02-15 | Samsung Electronics Co., Ltd. | Optical lens assembly and electronic device including the same |
| CN107272165A (en) * | 2017-08-15 | 2017-10-20 | 浙江舜宇光学有限公司 | Imaging lens system group |
| TWM581700U (en) * | 2019-04-11 | 2019-08-01 | 紘立光電股份有限公司 | Optical imaging lens and imaging device |
| CN112230371A (en) * | 2020-10-26 | 2021-01-15 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
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