TWI808344B - 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,除了不斷朝向大光圈發展外,隨著不同的應用需求,還需具備高解析度及抗環境溫度變化的特性,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,才能同時滿足大光圈、高解析度及抗環境溫度變化的需求。 The development trend of today's imaging lenses is that in addition to the continuous development towards large apertures, with the needs of different applications, it is also necessary to have the characteristics of high resolution and resistance to environmental temperature changes. The conventional imaging lenses can no longer meet the current needs. Another imaging lens with a new structure is needed to meet the needs of large apertures, 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 with 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、一第五透鏡及一第六透鏡。第一透鏡具有負屈光力且包括一凹面朝向一像側。第二透鏡具有正屈光力且包括一凸面朝向一物側。第三透鏡具有正屈光力。第四透鏡具有負屈光力。第五透鏡為彎月型透鏡具有正屈光力。第六透鏡具有正屈光力且包括一凹面朝向像側。第一透鏡、第二透鏡、第三透鏡、第四透鏡、第五透鏡及第六透鏡沿著一光軸從物側至像側依序排列。第三透鏡與第四透鏡之間包括一空氣間隔。 The invention provides an imaging lens including a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has negative refractive power and includes a concave surface facing an image side. The second lens has positive refractive power and includes a convex surface facing an object side. The third lens has positive refractive power. The fourth lens has negative refractive power. The fifth lens is a meniscus lens with positive refractive power. The sixth lens has positive refractive power and includes a concave surface facing the image side. The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are sequentially arranged along an optical axis from the object side to the image side. An air space is included between the third lens and the fourth lens.
其中第一透鏡可更包括另一凹面朝向物側,第二透鏡可更 包括另一凸面朝向像側,第三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,第四透鏡為雙凹透鏡且包括一凹面朝向物側及另一凹面朝向像側,第五透鏡包括一凹面朝向物側及一凸面朝向像側,第六透鏡可更包括一凸面朝向物側。 Wherein the first lens may further include another concave surface facing the object side, the second lens may further Including another convex surface facing the image side, the third lens is a biconvex lens and includes a convex surface facing the object side and another convex surface facing the image side, the fourth lens is a biconcave lens and includes a concave surface facing the object side and another concave surface facing the image side, the fifth lens includes a concave surface facing the object side and a convex surface facing the image side, and the sixth lens may further include a convex surface facing the object side.
其中第一透鏡可更包括一凸面朝向物側,第二透鏡可更包括一凹面朝向像側,第三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,第四透鏡為雙凹透鏡且包括一凹面朝向物側及另一凹面朝向像側,第五透鏡包括一凹面朝向物側及一凸面朝向像側,第六透鏡可更包括一凸面朝向物側。 Wherein the first lens may further include a convex surface facing the object side, the second lens may further include a concave surface facing the image side, the third lens is a biconvex lens and includes a convex surface facing the object side and another convex surface facing the image side, the fourth lens is a biconcave lens and includes a concave surface facing the object side and another concave surface facing the image side, the fifth lens includes a concave surface facing the object side and a convex surface facing the image side, and the sixth lens may further include a convex surface facing the object side.
本發明之成像鏡頭,可更包括一光圈設置於第三透鏡與第四透鏡之間。 The imaging lens of the present invention may further include an aperture disposed between the third lens and the fourth lens.
其中第一透鏡、第二透鏡以及第三透鏡包括至少一玻璃球面透鏡,第四透鏡、第五透鏡以及第六透鏡包括至少一玻璃球面透鏡。 Wherein the first lens, the second lens and the third lens include at least one glass spherical lens, and the fourth lens, the fifth lens and the sixth lens include at least one glass spherical lens.
其中成像鏡頭滿足以下條件:120<Vd1+Vd3<140;其中,Vd1為第一透鏡之一阿貝係數,Vd3為第三透鏡之一阿貝係數。 The imaging lens satisfies the following condition: 120<Vd 1 +Vd 3 <140; wherein, Vd 1 is an Abbe coefficient of one of the first lenses, and Vd 3 is an Abbe coefficient of one of the third lenses.
其中成像鏡頭滿足以下條件:0.4<(f3+f4)/f<0.62;其中,f3為第三透鏡之一有效焦距,f4為第四透鏡之一有效焦距,f為成像鏡頭之一有效焦距。 The imaging lens satisfies the following condition: 0.4<(f 3 +f 4 )/f<0.62; wherein, f 3 is an effective focal length of one of the third lenses, f 4 is an effective focal length of one of the fourth 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:-7<R22/R21<48;其中,R21為第二透鏡之一物側面之一曲率半徑,R22為第二透鏡之一像側面之一曲率半徑。 The imaging lens satisfies the following condition: -7<R 22 /R 21 <48; wherein, R 21 is a radius of curvature of an object side of the second lens, and R 22 is a radius of curvature of an image side of the second lens.
其中成像鏡頭滿足以下條件:6mm<f4+f6<12mm;其 中,f4為第四透鏡之一有效焦距,f6為第六透鏡之一有效焦距。 The imaging lens satisfies the following conditions: 6mm<f 4 +f 6 <12mm; wherein, f 4 is an effective focal length of one of the fourth lenses, and f 6 is an effective focal length of one of the sixth lenses.
其中成像鏡頭滿足以下條件;3.9<TTL/BFL<6;其中,TTL為第一透鏡之一物側面至一成像面於光軸上之一間距,BFL為第六透鏡之一像側面至成像面於光軸上之一間距。 Wherein the imaging lens satisfies the following condition: 3.9<TTL/BFL<6; wherein, TTL is the distance between the object side of the first lens and an imaging surface on the optical axis, and BFL is the distance between the image side of the sixth lens and the imaging surface on the optical axis.
其中成像鏡頭滿足以下條件:0.05<f123/f456<0.22;其中,f123為第一透鏡、第二透鏡及第三透鏡之一組合有效焦距,f456為第四透鏡、第五透鏡及第六透鏡之一組合有效焦距。 The imaging lens satisfies the following conditions: 0.05<f 123 /f 456 <0.22; wherein, f 123 is the combined effective focal length of one of the first lens, the second lens and the third lens, and f 456 is the combined effective focal length of one of the fourth lens, the fifth lens and the sixth lens.
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 with the accompanying drawings.
1、2、3、4:成像鏡頭 1, 2, 3, 4: imaging lens
L11、L21、L31、L41:第一透鏡 L11, L21, L31, L41: first lens
L12、L22、L32、L42:第二透鏡 L12, L22, L32, L42: second lens
L13、L23、L33、L43:第三透鏡 L13, L23, L33, L43: third lens
L14、L24、L34、L44:第四透鏡 L14, L24, L34, L44: fourth lens
L15、L25、L35、L45:第五透鏡 L15, L25, L35, L45: fifth lens
L16、L26、L36、L46:第六透鏡 L16, L26, L36, L46: sixth lens
ST1、ST2、ST3、ST4:光圈 ST1, ST2, ST3, ST4: Aperture
OA1、OA2、OA3、OA4:光軸 OA1, OA2, OA3, OA4: optical axis
OF1、OF2、OF3、OF4:濾光片 OF1, OF2, OF3, OF4: Filters
CG1、CG2、CG3、CG4:保護玻璃 CG1, CG2, CG3, CG4: Protective glass
IMA1、IMA2、IMA3、IMA4:成像面 IMA1, IMA2, IMA3, IMA4: imaging surface
S11、S21、S31、S41:第一透鏡物側面 S11, S21, S31, S41: the object side of the first lens
S12、S22、S32、S42:第一透鏡像側面 S12, S22, S32, S42: the side of the first lens image
S13、S23、S33、S43:第二透鏡物側面 S13, S23, S33, S43: second lens object side
S14、S24、S34、S44:第二透鏡像側面 S14, S24, S34, S44: the second lens image side
S15、S25、S35、S45:第三透鏡物側面 S15, S25, S35, S45: third lens object side
S16、S26、S36、S46:第三透鏡像側面 S16, S26, S36, S46: the third lens image side
S17、S27、S37、S47:光圈面 S17, S27, S37, S47: aperture surface
S18、S28、S38、S48:第四透鏡物側面 S18, S28, S38, S48: the object side of the fourth lens
S19、S29、S39、S49:第四透鏡像側面 S19, S29, S39, S49: the side of the fourth lens image
S110、S210、S310、S410:第五透鏡物側面 S110, S210, S310, S410: fifth lens object side
S111、S211、S311、S411:第五透鏡像側面 S111, S211, S311, S411: the side image of the fifth lens
S112、S212、S312、S412:第六透鏡物側面 S112, S212, S312, S412: the object side of the sixth lens
S113、S213、S313、S413:第六透鏡像側面 S113, S213, S313, S413: the side image of the sixth lens
S114、S214、S314、S414:濾光片物側面 S114, S214, S314, S414: Filter object side
S115、S215、S315、S415:濾光片像側面 S115, S215, S315, S415: filter like the side
S116、S216、S316、S416:保護玻璃物側面 S116, S216, S316, S416: protect the side of the glass object
S117、S217、S317、S417:保護玻璃像側面 S117, S217, S317, S417: protective glass like the 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與光路示意圖。 FIG. 1 is a schematic diagram of the lens configuration and optical path of the first embodiment of the 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場曲(Field Curvature)圖。 FIG. 2A is a field curvature diagram 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畸變(Distortion)圖。 FIG. 2B is a distortion 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調變轉換函數(Modulation Transfer Function)圖。 FIG. 2C is a modulation transfer function 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與光路示意圖。 FIG. 3 is a schematic diagram of the lens configuration and optical path of the second embodiment of the 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場曲圖。 FIG. 4A is a field curvature 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畸變圖。 FIG. 4B is a distortion 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調變轉換函數圖。 FIG. 4C is a modulation transfer function 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與光路示意圖。 FIG. 5 is a schematic diagram of the lens configuration and optical path of the third embodiment of the imaging lens according to the present invention.
第6A係依據本發明之成像鏡頭之第三實施例的場曲圖。 6A is the field curvature 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畸變圖。 FIG. 6B is a distortion 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調變轉換函數圖。 FIG. 6C is a modulation transfer function diagram of the third embodiment of the imaging lens according to the present invention.
第7圖係依據本發明之成像鏡頭之第四實施例的透鏡配置示意圖。 FIG. 7 is a schematic diagram of the lens configuration of the fourth embodiment of the imaging lens according to the present invention.
第8A圖係依據本發明之成像鏡頭之第四實施例的縱向像差(Longitudinal Aberration)圖 Fig. 8A is a longitudinal aberration (Longitudinal Aberration) diagram of the fourth embodiment of the imaging lens according to the present invention
第8B圖係依據本發明之成像鏡頭之第四實施例的場曲圖。 FIG. 8B is a field curvature diagram of the fourth embodiment of the imaging lens according to the present invention.
第8C圖係依據本發明之成像鏡頭之第四實施例的畸變圖。 FIG. 8C is a distortion diagram of the fourth embodiment of the imaging lens according to the present invention.
第8D圖係依據本發明之成像鏡頭之第四實施例的橫向色差(Lateral Color)圖。 FIG. 8D is a lateral color aberration (Lateral Color) diagram of the fourth embodiment of the imaging lens according to the present invention.
第8E圖係依據本發明之成像鏡頭之第四實施例的相對照度(Relative Illumination)圖。 FIG. 8E is a relative illumination (Relative Illumination) diagram of the fourth embodiment of the imaging lens according to the present invention.
第8F圖係依據本發明之成像鏡頭之第四實施例的調變轉換函數圖。 FIG. 8F is a modulation transfer function diagram of the fourth embodiment of the imaging lens according to the present invention.
第8G圖係依據本發明之成像鏡頭之第四實施例的離焦調變轉換函數(Through Focus Modulation Transfer Function)圖。 FIG. 8G is a through focus modulation transfer function diagram of the fourth embodiment of the imaging lens according to the present invention.
本發明提供一種成像鏡頭,包括:一第一透鏡具有負屈光力,此第一透鏡包括一凹面朝向一像側;一第二透鏡具有正屈光力,此第二透鏡包括一凸面朝向一物側;一第三透鏡具有正屈光力;一第四透鏡具 有負屈光力;一第五透鏡具有正屈光力,此第五透鏡為彎月型透鏡;及一第六透鏡具有正屈光力,此第六透鏡包括一凹面朝向像側;其中第一透鏡、第二透鏡、第三透鏡、第四透鏡、第五透鏡及第六透鏡沿著一光軸從物側至像側依序排列;其中第三透鏡與第四透鏡之間包括一空氣間隔。 The present invention provides an imaging lens, comprising: a first lens with negative refractive power, the first lens includes a concave surface facing an image side; a second lens has positive refractive power, and the second lens includes a convex surface facing an object side; a third lens has positive refractive power; a fourth lens has There is negative refractive power; a fifth lens has positive refractive power, and the fifth lens is a meniscus lens; and a sixth lens has positive refractive power, and the sixth lens includes a concave surface facing the image side; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are arranged in sequence along an optical axis from the object side to the image side; wherein an air gap is included between the third lens and the fourth lens.
前述成像鏡頭的第一透鏡、第二透鏡、第三透鏡、第四透鏡、第五透鏡以及第六透鏡中,任二相鄰的透鏡間於光軸上皆可具有一空氣間隔;也就是說,成像鏡頭可具有六片單一非膠合的透鏡。由於膠合透鏡的製程較非膠合透鏡複雜,特別在兩透鏡的膠合面需擁有高準度的曲面,以便達到兩透鏡膠合時的高密合度,且在膠合的過程中,也可能因偏位而造成密合度不佳,影響整體光學成像品質。因此,本發明成像鏡頭中,任二相鄰的透鏡間於光軸上皆可具有一空氣間隔,可有效避免膠合透鏡所產生的問題。 In the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens of the aforementioned imaging lens, any two adjacent lenses can have an air gap on the optical axis; that is, the imaging lens can have six single non-cemented lenses. Since the manufacturing process of cemented lenses is more complicated than that of non-cemented lenses, especially the cemented surface of the two lenses must have a high-precision curved surface in order to achieve a high degree of adhesion when the two lenses are cemented together. In the process of gluing, misalignment may also cause poor adhesion, which affects the overall optical imaging quality. Therefore, in the imaging lens of the present invention, there can be an air gap between any two adjacent lenses on the optical axis, which can effectively avoid problems caused by cemented lenses.
請參閱底下表一、表三、表五及表七,其中表一、表三、表五及表七分別為依據本發明之成像鏡頭之第一實施例至第四實施例的各透鏡之相關參數表。 Please refer to Table 1, Table 3, Table 5 and Table 7 below, wherein Table 1, Table 3, Table 5 and Table 7 are the relevant parameter tables of the lenses according to the first embodiment to the fourth embodiment of the imaging lens of the present invention.
第1、3、5、7圖分別為本發明之成像鏡頭之第一、二、三、四實施例的透鏡配置示意圖,其中第一透鏡L11、L21、L31、L41具有負屈光力,由玻璃材質製成,其像側面S12、S22、S32、S42為凹面,物側面S11、S21、S31、S41與像側面S12、S22、S32、S42皆為球面表面。 Figures 1, 3, 5, and 7 are schematic diagrams of the lens configurations of the first, second, third, and fourth embodiments of the imaging lens of the present invention, in which the first lenses L11, L21, L31, and L41 have negative refractive power and are made of glass. The image sides S12, S22, S32, and S42 are concave surfaces, and the object sides S11, S21, S31, and S41 and the image sides S12, S22, S32, and S42 are all spherical surfaces. .
第二透鏡L12、L22、L32、L42具有正屈光力,由玻璃材質製成,其物側面S13、S23、S33、S43為凸面,物側面S13、S23、S33、S43與像側面S14、S24、S34、S44皆為球面表面。 The second lenses L12, L22, L32, L42 have positive refractive power and are made of glass material. The object sides S13, S23, S33, S43 are convex, and the object sides S13, S23, S33, S43 and image sides S14, S24, S34, S44 are all spherical surfaces.
第三透鏡L13、L23、L33、L43為雙凸透鏡具有正屈光力,由玻璃材質製成,其物側面S15、S25、S35、S45為凸面,像側面S16、S26、S36、S46為凸面,物側面S15、S25、S35、S45與像側面S16、S26、S36、S46皆為球面表面。 The third lenses L13, L23, L33, L43 are biconvex lenses with positive refractive power, made of glass material, the object sides S15, S25, S35, S45 are convex, the image sides S16, S26, S36, S46 are convex, the object sides S15, S25, S35, S45 and the image sides S16, S26, S36, S46 are all spherical surfaces.
第四透鏡L14、L24、L34、L44為雙凹透鏡具有負屈光力,由玻璃材質製成,其物側面S18、S28、S38、S48為凹面,像側面S19、S29、S39、S49為凹面,物側面S18、S28、S38、S48與像側面S19、S29、S39、S49皆為球面表面。 The fourth lenses L14, L24, L34, and L44 are biconcave lenses with negative refractive power and are made of glass. The object sides S18, S28, S38, and S48 are concave, and the image sides S19, S29, S39, and S49 are concave.
第五透鏡L15、L25、L35、L45為彎月型透鏡具有正屈光力,由玻璃材質製成,其物側面S110、S210、S310、S410為凹面,像側面S111、S211、S311、S411為凸面,物側面S110、S210、S310、S410與像側面S111、S211、S311、S411皆為球面表面。
The fifth lens L15, L25, L35, L45 is a meniscus lens with positive refractive power, made of glass material, the object side S110, S210, S310, S410 is concave, the image side S111, S211, S311, S411 is convex, the object side S110, S210, S310, S410 and the image side S111, S211,
第六透鏡L16、L26、L36、L46為彎月型透鏡具有正屈光力,由玻璃材質製成,其物側面S112、S212、S312、S412為凸面,像側面S113、S213、S313、S413為凹面,物側面S112、S212、S312、S412與像側面S113、S213、S313、S413皆為球面表面。
The sixth lens L16, L26, L36, L46 is a meniscus lens with positive refractive power, made of glass material, the object side S112, S212, S312, S412 is convex, the image side S113, S213, S313, S413 is concave, the object side S112, S212, S312, S412 and the image side S113, S213,
另外,成像鏡頭1、2、3、4至少滿足底下其中一條件:120<Vd1+Vd3<140 (1)
In addition,
0.4<(f3+f4)/f<0.62 (2) 0.4<(f 3 +f 4 )/f<0.62 (2)
-7<R22/R21<48 (3) -7<R 22 /R 21 <48 (3)
6mm<f4+f6<12mm (4) 6mm<f 4 +f 6 <12mm (4)
3.9<TTL/BFL<6 (5) 3.9<TTL/BFL<6 (5)
0.05<f123/f456<0.22 (6) 0.05<f 123 /f 456 <0.22 (6)
其中,Vd1為第一實施例至第四實施例中,第一透鏡L11、L21、L31、L41之一阿貝係數,Vd3為第一實施例至第四實施例中,第三透鏡L13、L23、L33、L43之一阿貝係數,f3為第一實施例至第四實施例中,第三透鏡L13、L23、L33、L43之一有效焦距,f4為第一實施例至第四實施例中,第四透鏡L14、L24、L34、L44之一有效焦距,f6為第一實施例至第四實施例中,第六透鏡L16、L26、L36、L46之一有效焦距,f為第一實施例至第四實施例中,成像鏡頭1、2、3、4之一有效焦距,f123為第一實施例至第四實施例中,第一透鏡L11、L21、L31、L41、第二透鏡L12、L22、L32、L42及第三透鏡L13、L23、L33、L43之一組合有效焦距,f456為第一實施例至第四實施例中,第四透鏡L14、L24、L34、L44、第五透鏡L15、L25、L35、L45及第六透鏡L16、L26、L36、L46之一組合有效焦距,R21為第一實施例至第四實施例中,第二透鏡L12、L22、L32、L42之物側面S13、S23、S33、S43之一曲率半徑,R22為第一實施例至第四實施例中,第二透鏡L12、L22、L32、L42之像側面S14、S24、S34、S44之一曲率半徑,TTL為第一實施例至第四實施例中,第一透鏡L11、L21、L31、L41之物側面S11、S21、S31、S41分別至成像面IMA1、IMA2、IMA3、IMA4於光軸OA1、OA2、OA3、OA4上之一間距,BFL為第一實施例至第四實施例中,第六透鏡L16、L26、L36、L46之像側面S113、S213、S313、S413分別至成像面IMA1、IMA2、IMA3、IMA4於光軸OA1、OA2、OA3、OA4上之一間距。使得成像鏡頭1、2、3、4能有效的縮小光圈值、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、有效的修正色差。
其中,Vd 1為第一實施例至第四實施例中,第一透鏡L11、L21、L31、L41之一阿貝係數,Vd 3為第一實施例至第四實施例中,第三透鏡L13、L23、L33、L43之一阿貝係數,f 3為第一實施例至第四實施例中,第三透鏡L13、L23、L33、L43之一有效焦距,f 4為第一實施例至第四實施例中,第四透鏡L14、L24、L34、L44之一有效焦距,f 6為第一實施例至第四實施例中,第六透鏡L16、L26、L36、L46之一有效焦距,f為第一實施例至第四實施例中,成像鏡頭1、2、3、4之一有效焦距,f 123為第一實施例至第四實施例中,第一透鏡L11、L21、L31、L41、第二透鏡L12、L22、L32、L42及第三透鏡L13、L23、L33、L43之一組合有效焦距,f 456為第一實施例至第四實施例中,第四透鏡L14、L24、L34、L44、第五透鏡L15、L25、L35、L45及第六透鏡L16、L26、L36、L46之一組合有效焦距,R 21為第一實施例至第四實施例中,第二透鏡L12、L22、L32、L42之物側面S13、S23、S33、S43之一曲率半徑,R 22為第一實施例至第四實施例中,第二透鏡L12、L22、L32、L42之像側面S14、S24、S34、S44之一曲率半徑,TTL為第一實施例至第四實施例中,第一透鏡L11、L21、L31、L41之物側面S11、S21、S31、S41分別至成像面IMA1、IMA2、IMA3、IMA4於光軸OA1、OA2、OA3、OA4上之一間距,BFL為第一實施例至第四實施例中,第六透鏡L16、L26、L36、L46之像側面S113、S213、S313、S413分別至成像面IMA1、IMA2、IMA3、IMA4於光軸OA1、OA2、OA3、OA4上之一間距。 The
當滿足條件(1):120<Vd1+Vd3<140時,可有效降低色差,提升成像品質。 When the condition (1) is satisfied: 120<Vd 1 +Vd 3 <140, the chromatic aberration can be effectively reduced and the imaging quality can be improved.
當滿足條件(2):0.4<(f3+f4)/f<0.62時,可有效降低加工敏感度,提升品質。 When the condition (2): 0.4<(f 3 +f 4 )/f<0.62 is satisfied, the processing sensitivity can be effectively reduced and the quality can be improved.
當滿足條件(3):-7<R22/R21<48時,可有效降低第二透鏡的敏感度,提升品質。 When the condition (3): -7<R 22 /R 21 <48 is satisfied, the sensitivity of the second lens can be effectively reduced and the quality can be improved.
當滿足條件(5):3.9<TTL/BFL<6時,可有較長後焦距,有利於成像鏡頭之組裝。 When the condition (5) is satisfied: 3.9<TTL/BFL<6, a longer back focal length can be obtained, which is beneficial to the assembly of the imaging lens.
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、一第三透鏡L13、一光圈ST1、一第四透鏡L14、一第五透鏡L15、一第六透鏡L16、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. 1, the
第一透鏡L11為雙凹透鏡,其物側面S11為凹面; The first lens L11 is a biconcave lens, and its object side S11 is concave;
第二透鏡L12為雙凸透鏡,其像側面S14為凸面; The second lens L12 is a biconvex lens, and its image side S14 is a convex surface;
濾光片OF1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 optical filter OF1 are both planes;
保護玻璃CG1其物側面S116與像側面S117皆為平面; The object side S116 and the image side S117 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(6)其中一條件之設計,使得成像鏡頭1能有效的縮小光圈值、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、有效的修正色差。
Utilizing the above lens, the aperture ST1 and the design satisfying at least one of the conditions (1) to (6), 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
表二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(6)之計算值,由表二可知,第一實施例之成像鏡頭1皆能滿足條件(1)至條件(6)之要求。
Table 2 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其場曲介於-0.035mm至0.04mm之間。由第2B圖可看出,第一實施例之成像鏡頭1其畸變介於-10%至0%之間。由第2C圖可看出,第一實施例之成像鏡頭1其調變轉換函數值介於0.27至1.0之間。
In addition, the optical performance of the
顯見第一實施例之成像鏡頭1之場曲、畸變都能被有效修正,鏡頭解析度也都能滿足要求,從而得到較佳的光學性能。
It is obvious that the field curvature and distortion of the
請參閱第3圖,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。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、一第三透鏡L23、一光圈ST2、一第四透鏡L24、一第五透鏡L25、一第六透鏡L26、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 . FIG. 3 is a schematic diagram of lens configuration according to the second embodiment of the imaging lens of the present invention. The
第一透鏡L21為雙凹透鏡,其物側面S21為凹面; The first lens L21 is a biconcave lens, and its object side surface S21 is concave;
第二透鏡L22為雙凸透鏡,其像側面S24為凸面; The second lens L22 is a biconvex lens, and its image side S24 is a convex surface;
濾光片OF2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 optical filter OF2 are both planes;
保護玻璃CG2其物側面S216與像側面S217皆為平面; The object side S216 and the image side S217 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(6)其中一條件之設計,使得成像鏡頭2能有效的縮小光圈值、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、有效的修正色差。
Utilizing the above lens, the aperture ST2 and the design satisfying at least one of the conditions (1) to (6), the
表三為第3圖中成像鏡頭2之各透鏡之相關參數表。
Table 3 is a table of relevant parameters of each lens of the
表四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(6)之計算值,由表四可知,第二實施例之成像鏡頭2皆能滿足條件(1)至條件(6)之要求。
Table 4 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其場曲介於-0.04mm至0.06mm之間。由第4B圖可看出,第二實施例之成像鏡頭2其畸變介於-10%至0%之間。由第4C圖可看出,第二實施例之成像鏡頭2其調變轉換函數值介於0.54至1.0之間。
In addition, the optical performance of the
顯見第二實施例之成像鏡頭2之場曲、畸變都能被有效修正,鏡頭解析度也都能滿足要求,從而得到較佳的光學性能。
It is obvious that the field curvature and distortion of the
請參閱第5圖,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。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、一第三透鏡L33、一光圈ST3、一第四透鏡L34、一第五透鏡L35、一第六透鏡L36、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 . FIG. 5 is a schematic diagram of the lens configuration of the third embodiment of the imaging lens according to the present invention. The
第一透鏡L31為雙凹透鏡,其物側面S31為凹面; The first lens L31 is a biconcave lens, and its object side surface S31 is concave;
第二透鏡L32為雙凸透鏡,其像側面S34為凸面; The second lens L32 is a biconvex lens, and its image side S34 is a convex surface;
濾光片OF3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 optical filter OF3 are both planes;
保護玻璃CG3其物側面S316與像側面S317皆為平面; The object side S316 and the image side S317 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(6)其中一條件之設計,使得成像鏡頭3能有效的縮小光圈值、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、有效的修正色差。
Utilizing the above-mentioned lens, the aperture ST3 and the design satisfying at least one of the conditions (1) to (6), the
表五為第5圖中成像鏡頭3之各透鏡之相關參數表。
Table 5 is a table of relevant parameters of each lens of the
表六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(6)之計算值,由表六可知,第三實施例之成像鏡頭3皆能滿足條件(1)至條件(6)之要求。
Table 6 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其場曲介於-0.04mm至0.05mm之間。由第6B圖可看出,第三實施例之成像鏡頭3其畸變介於-12%至0%之間。由第6C圖可看出,第三實施例之成像鏡頭3其調變轉換函數值介於0.52至1.0之間。
In addition, the optical performance of the
顯見第三實施例之成像鏡頭3之場曲、畸變都能被有效修正,鏡頭解析度也都能滿足要求,從而得到較佳的光學性能。
It is obvious that the field curvature and distortion of the
請參閱第7圖,第7圖係依據本發明之成像鏡頭之第四實施例的透鏡配置示意圖。成像鏡頭4沿著一光軸OA4從一物側至一像側依序包括一第一透鏡L41、一第二透鏡L42、一第三透鏡L43、一光圈ST4、一第四透鏡L44、一第五透鏡L45、一第六透鏡L46、一濾光片OF4及一保護玻璃CG4。成像時,來自物側之光線最後成像於一成像面IMA4上。根據【實施方式】第一至八段落,其中:
Please refer to FIG. 7 . FIG. 7 is a schematic diagram of the lens configuration of the fourth embodiment of the imaging lens according to the present invention. The
第一透鏡L41為彎月型透鏡,其物側面S41為凸面; The first lens L41 is a meniscus lens, and its object side surface S41 is a convex surface;
第二透鏡L42為彎月型透鏡,其像側面S44為凹面; The second lens L42 is a meniscus lens, and its image side S44 is concave;
濾光片OF4其物側面S414與像側面S415皆為平面; The object side S414 and the image side S415 of the optical filter OF4 are both planes;
保護玻璃CG4其物側面S416與像側面S417皆為平面; The object side S416 and the image side S417 of the protective glass CG4 are both plane;
利用上述透鏡、光圈ST4及至少滿足條件(1)至條件(6)其中一條件之設計,使得成像鏡頭4能有效的縮小光圈值、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、有效的修正色差。
Utilizing the above-mentioned lens, the aperture ST4 and the design satisfying at least one of the conditions (1) to (6), the
表七為第7圖中成像鏡頭4之各透鏡之相關參數表。
Table 7 is a table of relevant parameters of each lens of the
表八為第四實施例之成像鏡頭4之相關參數值及其對應條件(1)至條件(6)之計算值,由表八可知,第四實施例之成像鏡頭4皆能滿足條件(1)至條件(6)之要求。
Table 8 shows the relevant parameter values of the
另外,第四實施例之成像鏡頭4的光學性能也可達到要求,由第8A圖可看出,第四實施例之成像鏡頭4其縱向像差介於-0.01mm至0.035mm之間。由第8B圖可看出,第四實施例之成像鏡頭4其場曲介於-0.025mm至0.035mm之間。由第8C圖可看出,第四實施例之成像鏡頭4其畸變介於-2%至0%之間。由第8D圖可看出,第四實施例之成像鏡頭4其橫向色差介於-1.0μm至2.5μm之間。由第8E圖可看出,第四實施例之成像鏡頭4其相對照度介於0.85至1.0之間。由第8F圖可看出,第四實施例之成像鏡頭4其調變轉換函數值介於0.51至1.0之間。由第8G圖可看出,第四實施例之成像鏡頭4,當焦點偏移介於-0.05mm至0.05mm之間其調變轉換函數值介於0.0至0.90之間。
In addition, the optical performance of the
顯見第四實施例之成像鏡頭4之縱向像差、場曲、畸變、橫向色差都能被有效修正,相對照度、鏡頭解析度、焦深也都能滿足要求,從而得到較佳的光學性能。
It is obvious that the longitudinal aberration, field curvature, distortion, and lateral chromatic aberration 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 person familiar with the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should 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
L13:第三透鏡 L13: third lens
L14:第四透鏡 L14: Fourth lens
L15:第五透鏡 L15: fifth lens
L16:第六透鏡 L16: sixth lens
ST1:光圈 ST1: Aperture
OA1:光軸 OA1: optical axis
OF1:濾光片 OF1: filter
CG1:保護玻璃 CG1: Protective glass
IMA1:成像面 IMA1: imaging surface
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:第三透鏡物側面 S15: third lens object side
S16:第三透鏡像側面 S16: The third lens image side
S17:光圈面 S17: Aperture surface
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:第六透鏡物側面 S112: The object side of the sixth lens
S113:第六透鏡像側面 S113: The side image of the sixth lens
S114:濾光片物側面 S114: Filter object side
S115:濾光片像側面 S115: Filter image side
S116:保護玻璃物側面 S116: Protect the side of the glass object
S117:保護玻璃像側面 S117: Protective glass like side
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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TW109131499A TWI808344B (en) | 2020-09-14 | 2020-09-14 | Lens assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW109131499A TWI808344B (en) | 2020-09-14 | 2020-09-14 | Lens assembly |
Publications (2)
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TW202210899A TW202210899A (en) | 2022-03-16 |
TWI808344B true TWI808344B (en) | 2023-07-11 |
Family
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Family Applications (1)
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TW109131499A TWI808344B (en) | 2020-09-14 | 2020-09-14 | Lens assembly |
Country Status (1)
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TW (1) | TWI808344B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI589924B (en) * | 2016-05-17 | 2017-07-01 | Kinko Optical Co Limited | Wide-angle six-slice lens |
US20180314039A1 (en) * | 2016-08-08 | 2018-11-01 | Zhejiang Sunny Optics Co.,Ltd. | Wide angle lens |
CN109991715A (en) * | 2017-12-29 | 2019-07-09 | 宁波舜宇车载光学技术有限公司 | Optical lens |
-
2020
- 2020-09-14 TW TW109131499A patent/TWI808344B/en active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI589924B (en) * | 2016-05-17 | 2017-07-01 | Kinko Optical Co Limited | Wide-angle six-slice lens |
US20180314039A1 (en) * | 2016-08-08 | 2018-11-01 | Zhejiang Sunny Optics Co.,Ltd. | Wide angle lens |
CN109991715A (en) * | 2017-12-29 | 2019-07-09 | 宁波舜宇车载光学技术有限公司 | Optical lens |
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TW202210899A (en) | 2022-03-16 |
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