TWI777342B - Scope - Google Patents
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- TWI777342B TWI777342B TW109146878A TW109146878A TWI777342B TW I777342 B TWI777342 B TW I777342B TW 109146878 A TW109146878 A TW 109146878A TW 109146878 A TW109146878 A TW 109146878A TW I777342 B TWI777342 B TW I777342B
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本發明係有關於一種光學變倍系統。 The present invention relates to an optical zoom system.
現今的光學變倍系統之發展趨勢，除了不斷朝向高倍率發展外，在相同倍率下也需具備相對較大視場，習知的光學變倍系統已經無法滿足現今的需求，需要有另一種新架構的光學變倍系統，才能同時滿足高倍率及相同倍率下相對較大視場的需求。 The development trend of today's optical zoom system, in addition to the continuous development of high magnification, also requires a relatively large field of view under the same magnification. The conventional optical zoom system has been unable to meet the current needs, and another new The optical zoom system of the architecture can meet the requirements of high magnification and relatively large field of view at the same magnification at the same time.
有鑑於此，本發明之主要目的在於提供一種光學變倍系統，其倍率較高、相同倍率下相對視場較大，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 optical zoom system, which has a higher magnification and a larger relative field of view under the same magnification, but still has good optical performance.
本發明之光學變倍系統包括一物鏡組、一正立鏡組及一目鏡組。物鏡組具有屈光力。正立鏡組具有屈光力且包括一第一透鏡群、一第二透鏡群及一第三透鏡群。第一透鏡群具有正屈光力。第二透鏡群包括一第Ⅱ-2-1透鏡及一第Ⅱ-2-2透鏡，第Ⅱ-2-1透鏡及第Ⅱ-2-2透鏡膠合。第三透鏡群包括一第Ⅱ-3-1透鏡及一第Ⅱ-3-2透鏡，第Ⅱ-3-1透鏡包括一凸面朝向物側，第Ⅱ-3-2透鏡包括一凸面朝向該像側，第Ⅱ-3-1透鏡及第Ⅱ-3-2透鏡膠合。目鏡組具有屈光力。第二透鏡群及第三透鏡群可沿著一光軸移動，以使正立鏡組改變放大倍率，進而使光學變倍系統改變放大倍率。物 鏡組、正立鏡組及目鏡組沿著光軸從物側至像側依序排列。第一透鏡群、第二透鏡群及第三透鏡群沿著光軸從物側至像側依序排列。第Ⅱ-2-1透鏡、第Ⅱ-2-2透鏡、第Ⅱ-3-1透鏡及第Ⅱ-3-2透鏡沿著光軸從物側至像側依序排列。 The optical zoom system of the present invention includes an objective lens group, an upright lens group and an eyepiece group. The objective lens group has refractive power. The erecting mirror group has refractive power and includes a first lens group, a second lens group and a third lens group. The first lens group has positive refractive power. The second lens group includes a first II-2-1 lens and a second II-2-2 lens, and the II-2-1 lens and the II-2-2 lens are cemented together. The third lens group includes a first II-3-1 lens and a second II-3-2 lens, the II-3-1 lens includes a convex surface facing the object side, and the II-3-2 lens includes a convex surface facing the image side On the side, the II-3-1 lens and the II-3-2 lens are cemented. The eyepiece group has refractive power. The second lens group and the third lens group can move along an optical axis, so that the erecting lens group can change the magnification, and then the optical zoom system can change the magnification. thing The lens group, the erecting lens group and the eyepiece group are sequentially arranged along the optical axis from the object side to the image side. The first lens group, the second lens group, and the third lens group are sequentially arranged along the optical axis from the object side to the image side. The II-2-1 lens, the II-2-2 lens, the II-3-1 lens, and the II-3-2 lens are sequentially arranged along the optical axis from the object side to the image side.
本發明之另一光學變倍系統包括一物鏡組、一正立鏡組及一目鏡組。物鏡組具有屈光力。正立鏡組具有屈光力且包括一第一透鏡群、一第二透鏡群及一第三透鏡群。第一透鏡群具有正屈光力。第二透鏡群包括一第Ⅱ-2-1透鏡及一第Ⅱ-2-2透鏡，第Ⅱ-2-1透鏡及第Ⅱ-2-2透鏡膠合。第三透鏡群包括一第Ⅱ-3-1透鏡及一第Ⅱ-3-2透鏡，第Ⅱ-3-2透鏡包括一凸面朝向像側，第Ⅱ-3-1透鏡及第Ⅱ-3-2透鏡膠合。目鏡組具有屈光力。第二透鏡群及第三透鏡群可沿著一光軸移動，以使正立鏡組改變放大倍率，進而使光學變倍系統改變放大倍率。物鏡組、正立鏡組及目鏡組沿著光軸從物側至像側依序排列。第一透鏡群、第二透鏡群及第三透鏡群沿著光軸從物側至像側依序排列。第Ⅱ-2-1透鏡、第Ⅱ-2-2透鏡、第Ⅱ-3-1透鏡及第Ⅱ-3-2透鏡沿著光軸從物側至像側依序排列。光學變倍系統滿足以下條件：20度
其中目鏡組包括一第III-1透鏡、一第III-2透鏡及一第III-3透鏡，第III-1透鏡及第III-2透鏡膠合，第一透鏡群包括一第Ⅱ-1-1透鏡，第Ⅱ-1-1透鏡為平凸透鏡具有正屈光力，且包括一平面朝向物側及一凸面朝向像側，第二透鏡群具有正屈光力，第三透鏡群具有正屈光力，第三透鏡群中的第Ⅱ-3-1透鏡包括一凸面朝向物側。 The eyepiece group includes a first III-1 lens, a third III-2 lens and a third III-3 lens, the III-1 lens and the III-2 lens are cemented together, and the first lens group includes a second II-1-1 lens Lenses, the second lens group II-1-1 is a plano-convex lens with positive refractive power, and includes a flat surface facing the object side and a convex surface facing the image side, the second lens group has positive refractive power, the third lens group has positive refractive power, and the third lens group has positive refractive power. The second lens II-3-1 in the lens includes a convex surface facing the object side.
其中物鏡組包括一第I-1透鏡及一第I-2透鏡，第I-1透鏡為雙凸透鏡具有正屈光力，且包括一凸面朝向物側及另一凸面朝向像側，第I-2透鏡具有負屈光力，且包括一凹面朝向物側，第I-1透鏡與第I-2透鏡膠合。 The objective lens group includes a first I-1 lens and a first I-2 lens. The I-1 lens is a biconvex lens with positive refractive power, and includes a convex surface facing the object side and another convex surface facing the image side. The I-2 lens It has negative refractive power and includes a concave surface facing the object side, and the I-1th lens is cemented with the I-2th lens.
其中物鏡組可更包括一第I-3透鏡及一第I-4透鏡，第I-2透鏡可更包括一平面朝向像側，第I-3透鏡為平凹透鏡具有負屈光力，且包括一凹面朝向物側及一平面朝向像側，第I-4透鏡為平凸透鏡具有正屈光力，且包括一凸面朝向物側及一平面朝向像側，第I-3透鏡及第I-4透鏡設置於第I-2透鏡與正立鏡組之間，第I-3透鏡及第I-4透鏡沿著光軸從物側至像側依序排列。 The objective lens group may further include a first I-3 lens and a first I-4 lens, the I-2 lens may further include a plane facing the image side, and the I-3 lens is a plano-concave lens with negative refractive power and includes a concave surface Facing the object side and a plane facing the image side, the 1-4th lens is a plano-convex lens with positive refractive power, and includes a convex surface facing the object side and a plane facing the image side, and the 1-3th lens and the 1-4th lens are arranged on the th Between the I-2 lens and the erecting lens group, the I-3th lens and the I-4th lens are sequentially arranged along the optical axis from the object side to the image side.
其中物鏡組可更包括一第I-5透鏡及二稜鏡，第I-5透鏡設置於物側與第I-1透鏡之間，第I-5透鏡為雙凸透鏡具有正屈光力，且包括一凸面朝向物側及另一凸面朝向像側，第I-2透鏡可更包括一凹面朝向像側，此等稜鏡設置於第I-2透鏡與正立鏡組之間。 The objective lens group may further include a first I-5 lens and a second lens, the I-5 lens is disposed between the object side and the I-1 lens, the I-5 lens is a biconvex lens with positive refractive power, and includes a The convex surface faces the object side and the other convex surface faces the image side. The 1-2th lens may further include a concave surface which faces the image side. These horns are arranged between the 1-2th lens and the erecting mirror group.
其中物鏡組可更包括一第I-3透鏡，第I-2透鏡可更包括一凸面朝向像側，第I-3透鏡為平凸透鏡具有正屈光力，且包括一凸面朝向物側及一平面朝向像側，第I-3透鏡設置於第I-2透鏡與正立鏡組之間。 The objective lens group may further include a first I-3 lens, the I-2 lens may further include a convex surface facing the image side, the I-3 lens is a plano-convex lens with positive refractive power, and includes a convex surface facing the object side and a flat surface facing the image side On the image side, the I-3th lens is arranged between the I-2th lens and the erecting mirror group.
其中物鏡組可更包括一第I-3透鏡及一第I-4透鏡，第I-2透鏡可更包括一凸面朝向像側，第I-3透鏡為彎月型透鏡具有正屈光力，且包括一凸面朝向物側及一凹面朝向像側，第I-4透鏡為彎月型透鏡具有負屈光力，且包括一凸面朝向物側及一凹面朝向像側，第I-3透鏡及第I-4透鏡設置於第I-2透鏡與正立鏡組之間，第I-3透鏡及第I-4透鏡沿著光軸從物側 至像側依序排列。 The objective lens group may further include a first I-3 lens and a first I-4 lens, the I-2 lens may further include a convex surface facing the image side, the I-3 lens is a meniscus lens with positive refractive power, and includes A convex surface facing the object side and a concave surface facing the image side, the 1-4th lens is a meniscus lens with negative refractive power, and includes a convex surface facing the object side and a concave surface facing the image side, the 1-3th lens and the 1-4th lens The lens is arranged between the I-2 lens and the erect mirror group, and the I-3 lens and the I-4 lens are along the optical axis from the object side. Arranged in order to the image side.
其中目鏡組具有正屈光力，正立鏡組及目鏡組之組合具有負屈光力，第III-1透鏡具有負屈光力，且包括一凹面朝向物側，第III-2透鏡具有正屈光力，且包括一凸面朝向像側，第III-3透鏡為雙凸透鏡具有正屈光力，且包括一凸面朝向物側及另一凸面朝向像側，光學變倍系統至少滿足以下其中一條件：-10
其中第III-1透鏡包括一凹面朝向像側，第III-2透鏡包括一凸面朝向物側，第III-1透鏡及第III-2透鏡之組合具有正屈光力。 The III-1 lens includes a concave surface facing the image side, the III-2 lens includes a convex surface facing the object side, and the combination of the III-1 lens and the III-2 lens has positive refractive power.
為使本發明之上述目的、特徵、和優點能更明顯易懂，下文特舉較佳實施例並配合所附圖式做詳細說明。 In order to make the above objects, features, and advantages of the present invention more clearly understood, preferred embodiments are hereinafter described in detail with the accompanying drawings.
1、2、3、4:光學變倍系統 1, 2, 3, 4: Optical zoom system
LG1OBJ、LG2OBJ、LG3OBJ、LG4OBJ:物鏡組 LG1 OBJ , LG2 OBJ , LG3 OBJ , LG4 OBJ : Objective lens group
LG1EL、LG2EL、LG3EL、LG4EL:正立鏡組 LG1 EL , LG2 EL , LG3 EL , LG4 EL : Upright mirror group
LG1EYE、LG2EYE、LG3EYE、LG4EYE:目鏡組 LG1 EYE , LG2 EYE , LG3 EYE , LG4 EYE : Eyepiece group
L213:第I-5透鏡 L213: I-5th lens
L11、L21、L31、L41:第I-1透鏡 L11, L21, L31, L41: I-1th lens
L12、L22、L32、L42:第I-2透鏡 L12, L22, L32, L42: I-2 lens
L13、L33、L43:第I-3透鏡 L13, L33, L43: I-3 lens
L14、L44:第I-4透鏡 L14, L44: I-4th lens
LP21、LP22:稜鏡 LP21, LP22: Jihan
LG11、LG21、LG31、LG41:第一透鏡群 LG11, LG21, LG31, LG41: The first lens group
LG12、LG22、LG32、LG42:第二透鏡群 LG12, LG22, LG32, LG42: Second lens group
LG13、LG23、LG33、LG43:第三透鏡群 LG13, LG23, LG33, LG43: The third lens group
L15、L25、L35、L45:第Ⅱ-1-1透鏡 L15, L25, L35, L45: Ⅱ-1-1 lens
L16、L26、L36、L46:第Ⅱ-2-1透鏡 L16, L26, L36, L46: Ⅱ-2-1 lens
L17、L27、L37、L47:第Ⅱ-2-2透鏡 L17, L27, L37, L47: Ⅱ-2-2 lens
L18、L28、L38、L48:第Ⅱ-3-1透鏡 L18, L28, L38, L48: Ⅱ-3-1 lens
L19、L29、L39、L49:第Ⅱ-3-2透鏡 L19, L29, L39, L49: Ⅱ-3-2 lens
L110、L210、L310、L410:第III-1透鏡 L110, L210, L310, L410: Lens III-1
L111、L211、L311、L411:第III-2透鏡 L111, L211, L311, L411: Lens III-2
L112、L212、L312、L412:第III-3透鏡 L112, L212, L312, L412: Lens III-3
IMA11、IMA21、IMA31、IMA41:第一成像面 IMA11, IMA21, IMA31, IMA41: The first imaging plane
IMA12、IMA22、IMA32、IMA42:第二成像面 IMA12, IMA22, IMA32, IMA42: Second imaging plane
OA1、OA2、OA3、OA4:光軸 OA1, OA2, OA3, OA4: Optical axis
S21:第I-5透鏡物側面 S21: I-5th lens object side
S22:第I-5透鏡像側面 S22: I-5th lens image side
S11、S23、S31、S41:第I-1透鏡物側面 S11, S23, S31, S41: I-1 lens object side
S12、S24、S32、S42:第I-1透鏡像側面 S12, S24, S32, S42: I-1 lens image side
S12、S24、S32、S42:第I-2透鏡物側面 S12, S24, S32, S42: I-2 lens object side
S13、S25、S33、S43:第I-2透鏡像側面 S13, S25, S33, S43: I-2 lens image side
S26、S28:稜鏡物側面 S26, S28: The side of the object
S27、S29:稜鏡像側面 S27, S29: Side view of the image of Jihan
S14、S34、S44:第I-3透鏡物側面 S14, S34, S44: I-3 lens object side
S15、S35、S45:第I-3透鏡像側面 S15, S35, S45: I-3 lens image side
S16、S46:第I-4透鏡物側面 S16, S46: I-4th lens object side
S17、S47:第I-4透鏡像側面 S17, S47: I-4th lens image side
S18、S210、S36、S48:第一成像面 S18, S210, S36, S48: the first imaging plane
S19、S211、S37、S49:第Ⅱ-1-1透鏡物側面 S19, S211, S37, S49: the object side of the Ⅱ-1-1 lens
S110、S212、S38、S410:第Ⅱ-1-1透鏡像側面 S110, S212, S38, S410: Ⅱ-1-1 lens image side
S111、S213、S39、S411:第Ⅱ-2-1透鏡物側面 S111, S213, S39, S411: Ⅱ-2-1 lens object side
S112、S214、S310、S412:第Ⅱ-2-1透鏡像側面 S112, S214, S310, S412: Ⅱ-2-1 lens image side
S112、S214、S310、S412:第Ⅱ-2-2透鏡物側面 S112, S214, S310, S412: the object side of the Ⅱ-2-2 lens
S113、S215、S311、S413:第Ⅱ-2-2透鏡像側面 S113, S215, S311, S413: Ⅱ-2-2 lens image side
S114、S216、S312、S414:第Ⅱ-3-1透鏡物側面 S114, S216, S312, S414: the object side of the Ⅱ-3-1 lens
S115、S217、S313、S415:第Ⅱ-3-1透鏡像側面 S115, S217, S313, S415: Ⅱ-3-1 lens image side
S115、S217、S313、S415:第Ⅱ-3-2透鏡物側面 S115, S217, S313, S415: Ⅱ-3-2 lens object side
S116、S218、S314、S416:第Ⅱ-3-2透鏡像側面 S116, S218, S314, S416: Ⅱ-3-2 lens image side
S117、S219、S315、S417:第二成像面 S117, S219, S315, S417: Second imaging plane
S118、S220、S316、S418:第III-1透鏡物側面 S118, S220, S316, S418: Object side of the III-1 lens
S119、S221、S317、S419:第III-1透鏡像側面 S119, S221, S317, S419: Image side of the III-1 lens
S119、S221、S317、S419:第III-2透鏡物側面 S119, S221, S317, S419: Object side of the III-2 lens
S120、S222、S318、S420:第III-2透鏡像側面 S120, S222, S318, S420: Image side of the III-2 lens
S121、S223、S319、S421:第III-3透鏡物側面 S121, S223, S319, S421: Object side of the III-3 lens
S122、S224、S320、S422:第III-3透鏡像側面 S122, S224, S320, S422: Image side of the III-3 lens
第1A圖係依據本發明之光學變倍系統之第一實施例於最小放大倍率 時之透鏡配置示意圖。 Fig. 1A shows the first embodiment of the optical zoom system according to the present invention at the minimum magnification Schematic diagram of the lens configuration of time.
第1B圖係依據本發明之光學變倍系統之第一實施例於最大放大倍率時之透鏡配置示意圖。 FIG. 1B is a schematic diagram of the lens configuration at the maximum magnification of the first embodiment of the optical zoom system according to the present invention.
第2A圖係依據本發明之光學變倍系統之第一實施例於最小放大倍率時的場曲(Field Curvature)圖。 FIG. 2A is a field curvature diagram of the first embodiment of the optical zoom system according to the present invention at the minimum magnification.
第2B圖係依據本發明之光學變倍系統之第一實施例於最小放大倍率時的畸變(Distortion)圖。 FIG. 2B is a distortion diagram of the first embodiment of the optical zoom system according to the present invention at the minimum magnification.
第2C圖係依據本發明之光學變倍系統之第一實施例於最大放大倍率時的場曲圖。 FIG. 2C is a field curvature diagram of the first embodiment of the optical zoom system according to the present invention at the maximum magnification.
第2D圖係依據本發明之光學變倍系統之第一實施例於最大放大倍率時的畸變圖。 Figure 2D is a distortion diagram of the first embodiment of the optical zoom system according to the present invention at the maximum magnification.
第3A圖係依據本發明之光學變倍系統之第二實施例於最小放大倍率時之透鏡配置示意圖。 FIG. 3A is a schematic diagram of the lens configuration at the minimum magnification of the second embodiment of the optical zoom system according to the present invention.
第3B圖係依據本發明之光學變倍系統之第二實施例於最大放大倍率時之透鏡配置示意圖。 FIG. 3B is a schematic diagram of the lens configuration at the maximum magnification of the second embodiment of the optical zoom system according to the present invention.
第4A圖係依據本發明之光學變倍系統之第二實施例於最小放大倍率時的場曲圖。 FIG. 4A is a field curvature diagram of the second embodiment of the optical zoom system according to the present invention at the minimum magnification.
第4B圖係依據本發明之光學變倍系統之第二實施例於最小放大倍率時的畸變圖。 FIG. 4B is a distortion diagram of the second embodiment of the optical zoom system according to the present invention at the minimum magnification.
第4C圖係依據本發明之光學變倍系統之第二實施例於最大放大倍率時的場曲圖。 FIG. 4C is a field curvature diagram of the second embodiment of the optical zoom system according to the present invention at the maximum magnification.
第4D圖係依據本發明之光學變倍系統之第二實施例於最大放大倍率 時的畸變圖。 Fig. 4D shows the second embodiment of the optical zoom system according to the present invention at the maximum magnification Distortion diagram of time.
第5A圖係依據本發明之光學變倍系統之第三實施例於最小放大倍率時之透鏡配置示意圖。 FIG. 5A is a schematic diagram of the lens configuration at the minimum magnification of the third embodiment of the optical zoom system according to the present invention.
第5B圖係依據本發明之光學變倍系統之第三實施例於最大放大倍率時之透鏡配置示意圖。 FIG. 5B is a schematic diagram of the lens configuration at the maximum magnification of the third embodiment of the optical zoom system according to the present invention.
第6A圖係依據本發明之光學變倍系統之第三實施例於最小放大倍率時的場曲圖。 FIG. 6A is a field curvature diagram of the third embodiment of the optical zoom system according to the present invention at the minimum magnification.
第6B圖係依據本發明之光學變倍系統之第三實施例於最小放大倍率時的畸變圖。 FIG. 6B is a distortion diagram of the third embodiment of the optical zoom system according to the present invention at the minimum magnification.
第6C圖係依據本發明之光學變倍系統之第三實施例於最大放大倍率時的場曲圖。 FIG. 6C is a field curvature diagram of the third embodiment of the optical zoom system according to the present invention at the maximum magnification.
第6D圖係依據本發明之光學變倍系統之第三實施例於最大放大倍率時的畸變圖。 FIG. 6D is a distortion diagram of the third embodiment of the optical zoom system according to the present invention at the maximum magnification.
第7A圖係依據本發明之光學變倍系統之第四實施例於最小放大倍率時之透鏡配置示意圖。 FIG. 7A is a schematic diagram of the lens configuration at the minimum magnification of the fourth embodiment of the optical zoom system according to the present invention.
第7B圖係依據本發明之光學變倍系統之第四實施例於最大放大倍率時之透鏡配置示意圖。 FIG. 7B is a schematic diagram of the lens configuration at the maximum magnification of the fourth embodiment of the optical zoom system according to the present invention.
第8A圖係依據本發明之光學變倍系統之第四實施例於最小放大倍率時的場曲圖。 FIG. 8A is a field curvature diagram of the fourth embodiment of the optical zoom system according to the present invention at the minimum magnification.
第8B圖係依據本發明之光學變倍系統之第四實施例於最小放大倍率時的畸變圖。 FIG. 8B is a distortion diagram of the fourth embodiment of the optical zoom system according to the present invention at the minimum magnification.
第8C圖係依據本發明之光學變倍系統之第四實施例於最大放大倍率時 的場曲圖。 Fig. 8C shows the fourth embodiment of the optical zoom system according to the present invention at the maximum magnification field curve diagram.
第8D圖係依據本發明之光學變倍系統之第四實施例於最大放大倍率時的畸變圖。 FIG. 8D is a distortion diagram of the fourth embodiment of the optical zoom system according to the present invention at the maximum magnification.
本發明提供一種光學變倍系統，包括：一物鏡組，此物鏡組具有屈光力；一正立鏡組，此正立鏡組具有屈光力，此正立鏡組包括一第一透鏡群、一第二透鏡群及一第三透鏡群；及一目鏡組，此目鏡組具有屈光力；其中第一透鏡群具有正屈光力；其中第二透鏡群包括一第Ⅱ-2-1透鏡及一第Ⅱ-2-2透鏡，此第Ⅱ-2-1透鏡及此第Ⅱ-2-2透鏡膠合；其中第三透鏡群包括一第Ⅱ-3-1透鏡及一第Ⅱ-3-2透鏡，此第Ⅱ-3-1透鏡包括一凸面朝向物側，此第Ⅱ-3-2透鏡包括一凸面朝向像側，此第Ⅱ-3-1透鏡及此第Ⅱ-3-2透鏡膠合；其中第二透鏡群及第三透鏡群可沿著一光軸移動，以使正立鏡組改變放大倍率，進而使光學變倍系統改變放大倍率；其中物鏡組、正立鏡組及目鏡組沿著光軸從物側至像側依序排列；其中第一透鏡群、第二透鏡群及第三透鏡群沿著光軸從物側至像側依序排列；其中第Ⅱ-2-1透鏡、第Ⅱ-2-2透鏡、第Ⅱ-3-1透鏡及第Ⅱ-3-2透鏡沿著光軸從物側至像側依序排列。 The invention provides an optical variable magnification system, comprising: an objective lens group, the objective lens group has refractive power; an erecting lens group, the erecting lens group has refractive power, the erecting lens group includes a first lens group, a second lens group lens group and a third lens group; and an eyepiece group, the eyepiece group has refractive power; wherein the first lens group has positive refractive power; wherein the second lens group includes a first II-2-1 lens and a second II-2- 2 lenses, the II-2-1 lens and the II-2-2 lens are cemented; wherein the third lens group includes a II-3-1 lens and a II-3-2 lens, the II- The 3-1 lens includes a convex surface facing the object side, the II-3-2 lens includes a convex surface facing the image side, the II-3-1 lens and the II-3-2 lens are cemented; wherein the second lens group and the third lens group can be moved along an optical axis, so that the upright lens group can change the magnification, and then the optical zoom system can change the magnification; wherein the objective lens group, the upright lens group and the eyepiece group are along the optical axis from the object The first lens group, the second lens group and the third lens group are arranged in sequence from the object side to the image side along the optical axis; the II-2-1 lens, the II-2 lens The -2 lens, the II-3-1th lens, and the II-3-2th lens are sequentially arranged along the optical axis from the object side to the image side.
本發明提供另一種光學變倍系統，包括：一物鏡組，此物鏡組具有屈光力；一正立鏡組，此正立鏡組具有屈光力，此正立鏡組包括一第一透鏡群、一第二透鏡群及一第三透鏡群；及一目鏡組，此目鏡組具有屈光力；其中第一透鏡群具有正屈光力；其中第二透鏡群包括一第Ⅱ-2-1透鏡及一第Ⅱ-2-2透鏡，此第Ⅱ-2-1透鏡及此第Ⅱ-2-2透鏡膠合；其中第三
透鏡群包括一第Ⅱ-3-1透鏡及一第Ⅱ-3-2透鏡，此第Ⅱ-3-2透鏡包括一凸面朝向像側，此第Ⅱ-3-1透鏡及此第Ⅱ-3-2透鏡膠合；其中第二透鏡群及第三透鏡群可沿著一光軸移動，以使正立鏡組改變放大倍率，進而使光學變倍系統改變放大倍率；其中物鏡組、正立鏡組及目鏡組沿著光軸從物側至像側依序排列；其中第一透鏡群、第二透鏡群及第三透鏡群沿著光軸從物側至像側依序排列；其中第Ⅱ-2-1透鏡、第Ⅱ-2-2透鏡、第Ⅱ-3-1透鏡及第Ⅱ-3-2透鏡沿著光軸從物側至像側依序排列；其中光學變倍系統滿足以下條件：20度
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光學變倍系統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, among which Table 1, Table 3, Table 5 and Table 7 are the respective lenses of the first to fourth embodiments of the optical zoom system according to the present invention related parameter table.
第1A、3A、5A、7A圖分別為本發明之光學變倍系統之第一、二、三、四實施例於最小放大倍率時之透鏡配置示意圖，第1B、3B、5B、7B圖分別為本發明之光學變倍系統之第一、二、三、四實施例於最大放大倍率時之透鏡配置示意圖，其中物鏡組LG1OBJ、LG2OBJ、LG3OBJ、LG4OBJ分別包括第I-1透鏡L11第I-2透鏡L12、第I-1透鏡L21第I-2透鏡L22、第I-1透鏡L31第I-2透鏡L32、第I-1透鏡L41第I-2透鏡L42，正立鏡組LG1EL、LG2EL、LG3EL、LG4EL分別包括第一透鏡群LG11第二透鏡群LG12第三透鏡群LG13、第一透鏡群LG21第二透鏡群LG22第三透鏡群LG23、第一透鏡群LG31第二透鏡群LG32第三透鏡群LG33、第一透鏡群LG41第二透鏡群LG42第三透鏡群LG43，第一透鏡群LG11、LG21、LG31、LG41分 別包括第Ⅱ-1-1透鏡L15、L25、L35、L45，第二透鏡群LG12、LG22、LG32、LG42分別包括第Ⅱ-2-1透鏡L16第Ⅱ-2-2透鏡L17、第Ⅱ-2-1透鏡L26第Ⅱ-2-2透鏡L27、第Ⅱ-2-1透鏡L36第Ⅱ-2-2透鏡L37、第Ⅱ-2-1透鏡L46第Ⅱ-2-2透鏡L47，第三透鏡群LG13、LG23、LG33、LG43分別包括第Ⅱ-3-1透鏡L18第Ⅱ-3-2透鏡L19、第Ⅱ-3-1透鏡L28第Ⅱ-3-2透鏡L29、第Ⅱ-3-1透鏡L38第Ⅱ-3-2透鏡L39、第Ⅱ-3-1透鏡L48第Ⅱ-3-2透鏡L49，目鏡組LG1EYE、LG2EYE、LG3EYE、LG4EYE分別包括第III-1透鏡L110第III-2透鏡L111第III-3透鏡L112、第III-1透鏡L210第III-2透鏡L211第III-3透鏡L212、第III-1透鏡L310第III-2透鏡L311第III-3透鏡L312、第III-1透鏡L410第III-2透鏡L411第III-3透鏡L412。 Figures 1A, 3A, 5A, and 7A are schematic diagrams of the lens configuration of the first, second, third, and fourth embodiments of the optical zoom system of the present invention at the minimum magnification, respectively. Figures 1B, 3B, 5B, and 7B are respectively The first, second, third, and fourth embodiments of the optical zoom system of the present invention are schematic diagrams of lens configuration at the maximum magnification, wherein the objective lens groups LG1 OBJ , LG2 OBJ , LG3 OBJ , and LG4 OBJ respectively include the I-1th lens L11 I-2 lens L12, I-1 lens L21 I-2 lens L22, I-1 lens L31 I-2 lens L32, I-1 lens L41 I-2 lens L42, erect lens group LG1 EL , LG2 EL , LG3 EL , and LG4 EL respectively include a first lens group LG11, a second lens group LG12, a third lens group LG13, a first lens group LG21, a second lens group LG22, a third lens group LG23, and a first lens group LG31 The second lens group LG32, the third lens group LG33, the first lens group LG41, the second lens group LG42, the third lens group LG43, the first lens group LG11, LG21, LG31, and LG41 respectively include II-1-1 lenses L15, L25 , L35, L45, the second lens group LG12, LG22, LG32, LG42 respectively include the Ⅱ-2-1 lens L16 the Ⅱ-2-2 lens L17, the Ⅱ-2-1 lens L26 the Ⅱ-2-2 lens L27, II-2-1 lens L36 II-2-2 lens L37, II-2-1 lens L46 II-2-2 lens L47, the third lens group LG13, LG23, LG33, LG43 respectively includes II-3-1 lens L18 II-3-2 lens L19, II-3-1 lens L28 II-3-2 lens L29, II-3-1 lens L38 II-3-2 lens L39, II-3-1 lens L48 II-3-2 lens L49, eyepiece group LG1 EYE , LG2 EYE , LG3 EYE , LG4 EYE respectively includes III-1 lens L110 III-2 lens L111 III-3 lens L112 , III-1 lens L210 III-2 lens L211 III-3 lens L212, III-1 lens L310 III-2 lens L311 III-3 lens L312, III-1 lens L410 III-2 lens L411 III-3 lens L412.
第I-1透鏡L11、L21、L31、L41為雙凸透鏡具有正屈光力，由玻璃材質製成，其物側面S11、S23、S31、S41為凸面，像側面S12、S24、S32、S42為凸面，物側面S11、S23、S31、S41與像側面S12、S24、S32、S42皆為球面表面。第I-2透鏡L12、L22、L32、L42具有負屈光力，由玻璃材質製成，其物側面S12、S24、S32、S42為凹面，物側面S12、S24、S32、S42為球面表面。第I-1透鏡L11、L21、L31、L41分別與第I-2透鏡L12、L22、L32、L42膠合。第Ⅱ-1-1透鏡L15、L25、L35、L45為平凸透鏡具有正屈光力，由玻璃材質製成，其物側面S19、S211、S37、S49為平面，像側面S110、S212、S38、S410為凸面，像側面S110、S212、S38、S410為球面表面。第Ⅱ-2-1透鏡L16、L26、L36、L46為彎月型透鏡具有負屈光力，由玻璃材質製成，其物側面S111、S213、S39、S411為凸面，像側面S112、S214、S310、S412為凹面，物側面S111、S213、S39、S411與像側面S112、 S214、S310、S412皆為球面表面。第Ⅱ-2-2透鏡L17、L27、L37、L47為雙凸透鏡具有正屈光力，由玻璃材質製成，其物側面S112、S214、S310、S412為凸面，像側面S113、S215、S311、S413為凸面，物側面S112、S214、S310、S412與像側面S113、S215、S311、S413皆為球面表面。第Ⅱ-2-1透鏡L16、L26、L36、L46分別與第Ⅱ-2-2透鏡L17、L27、L37、L47膠合。第Ⅱ-3-1透鏡L18、L28、L38、L48為雙凸透鏡具有正屈光力，由玻璃材質製成，其物側面S114、S216、S312、S414為凸面，像側面S115、S217、S313、S415為凸面，物側面S114、S216、S312、S414與像側面S115、S217、S313、S415皆為球面表面。第Ⅱ-3-2透鏡L19、L29、L39、L49為彎月型透鏡具有負屈光力，由玻璃材質製成，其物側面S115、S217、S313、S415為凹面，像側面S116、S218、S314、S416為凸面，物側面S115、S217、S313、S415與像側面S116、S218、S314、S416皆為球面表面。第Ⅱ-3-1透鏡L18、L28、L38、L48分別與第Ⅱ-3-2透鏡L19、L29、L39、L49膠合。第III-1透鏡L110、L210、L310、L410為雙凹透鏡具有負屈光力，由玻璃材質製成，其物側面S118、S220、S316、S418為凹面，像側面S119、S221、S317、S419為凹面，物側面S118、S220、S316、S418與像側面S119、S221、S317、S419皆為球面表面。第III-2透鏡L111、L211、L311、L411為雙凸透鏡具有正屈光力，由玻璃材質製成，其物側面S119、S221、S317、S419為凸面，像側面S120、S222、S318、S420為凸面，物側面S119、S221、S317、S419與像側面S120、S222、S318、S420皆為球面表面。第III-1透鏡L110、L210、L310、L410分別與第III-2透鏡L111、L211、L311、L411膠合。第III-3透鏡L112、L212、L312、L412為雙凸透鏡具有正屈光力，由玻璃材質製成，其物側面S121、S223、 S319、S421為凸面，像側面S122、S224、S320、S422為凸面，物側面S121、S223、S319、S421與像側面S122、S224、S320、S422皆為球面表面。 The I-1 lenses L11, L21, L31, and L41 are biconvex lenses with positive refractive power and are made of glass. The object sides S11, S23, S31, and S41 are convex, and the image sides S12, S24, S32, and S42 are convex. The object side surfaces S11, S23, S31, and S41 and the image side surfaces S12, S24, S32, and S42 are all spherical surfaces. The first I-2 lenses L12, L22, L32, and L42 have negative refractive power and are made of glass. The object sides S12, S24, S32, and S42 are concave, and the object sides S12, S24, S32, and S42 are spherical surfaces. The I-1th lenses L11, L21, L31, and L41 are cemented with the I-2th lenses L12, L22, L32, and L42, respectively. Ⅱ-1-1 Lenses L15, L25, L35, L45 are plano-convex lenses with positive refractive power and are made of glass. The object sides S19, S211, S37, and S49 are planes, and the image sides S110, S212, S38, and S410 are Convex, like sides S110, S212, S38, S410 are spherical surfaces. Ⅱ-2-1 Lenses L16, L26, L36, L46 are meniscus lenses with negative refractive power and are made of glass. S412 is a concave surface, the object side surfaces S111, S213, S39, S411 and the image side surfaces S112, S214, S310, and S412 are all spherical surfaces. II-2-2 Lenses L17, L27, L37, and L47 are biconvex lenses with positive refractive power and are made of glass. The object sides S112, S214, S310, and S412 are convex, and the image sides S113, S215, S311, and S413 are convex. Convex, the object sides S112, S214, S310, S412 and the image sides S113, S215, S311, and S413 are all spherical surfaces. The II-2-1 lenses L16, L26, L36, and L46 are cemented with the II-2-2 lenses L17, L27, L37, and L47, respectively. II-3-1 Lenses L18, L28, L38, and L48 are biconvex lenses with positive refractive power and are made of glass. The object sides S114, S216, S312, and S414 are convex, and the image sides S115, S217, S313, and S415 are convex. Convex, the object sides S114, S216, S312, S414 and the image sides S115, S217, S313, S415 are all spherical surfaces. Ⅱ-3-2 Lenses L19, L29, L39, L49 are meniscus lenses with negative refractive power and are made of glass material. The object sides S115, S217, S313 and S415 are concave, and the image sides S116, S218, S314, S416 is a convex surface, and the object side surfaces S115, S217, S313, S415 and the image side surfaces S116, S218, S314, and S416 are all spherical surfaces. The II-3-1 lenses L18, L28, L38, and L48 are respectively cemented with the II-3-2 lenses L19, L29, L39, and L49. The III-1 lenses L110, L210, L310, and L410 are biconcave lenses with negative refractive power and are made of glass. The object sides S118, S220, S316, and S418 are concave, and the image sides S119, S221, S317, and S419 are concave. The object side surfaces S118, S220, S316 and S418 and the image side surfaces S119, S221, S317 and S419 are all spherical surfaces. The III-2 lenses L111, L211, L311, and L411 are biconvex lenses with positive refractive power and are made of glass. The object sides S119, S221, S317, and S419 are convex, and the image sides S120, S222, S318, and S420 are convex. The object side surfaces S119, S221, S317, and S419 and the image side surfaces S120, S222, S318, and S420 are all spherical surfaces. The III-1th lenses L110, L210, L310, and L410 are cemented with the III-2th lenses L111, L211, L311, and L411, respectively. The III-3 lenses L112, L212, L312, and L412 are biconvex lenses with positive refractive power and are made of glass. The object sides S121, S223, S319 and S421 are convex surfaces, the image side surfaces S122, S224, S320 and S422 are convex surfaces, and the object side surfaces S121, S223, S319 and S421 and the image side surfaces S122, S224, S320 and S422 are all spherical surfaces.
目鏡組LG1EYE、LG2EYE、LG3EYE、LG4EYE具有正屈光力。正立鏡組LG1EL、LG2EL、LG3EL、LG4EL分別與目鏡組LG1EYE、LG2EYE、LG3EYE、LG4EYE之組合具有負屈光力。 The eyepiece groups LG1 EYE , LG2 EYE , LG3 EYE , and LG4 EYE have positive refractive power. The combination of the upright lens group LG1 EL , LG2 EL , LG3 EL , and LG4 EL and the eyepiece group LG1 EYE , LG2 EYE , LG3 EYE , and LG4 EYE respectively has negative refractive power.
另外，光學變倍系統1、2、3、4至少滿足底下其中一條件：
In addition, the
其中，FOV為第一實施例至第四實施例中，光學變倍系統1、2、3、4之一視場，MEL為第一實施例至第四實施例中，正立鏡組LG1EL、LG2EL、LG3EL、LG4EL之一放大倍率值，R101為第一實施例至第四實施例中，目鏡組LG1EYE、LG2EYE、LG3EYE、LG4EYE中最靠近物側之透鏡L110、L210、L310、L410之物側面S118、S220、S316、S418之一曲率半徑，TTLEYE為第一實施例至第四實施例中，目鏡組LG1EYE、LG2EYE、LG3EYE、LG4EYE中最靠近物側之透鏡L110、L210、L310、L410之物側面S118、S220、S316、S418至最靠近像側之透鏡L112、L212、L312、L412之像側面S122、S224、S320、S422於光軸OA1、OA2、OA3、OA4上之一間距，R122為第一實施例至第四
實施例中，目鏡組LG1EYE、LG2EYE、LG3EYE、LG4EYE中最靠近像側之透鏡L112、L212、L312、L412之像側面S122、S224、S320、S422之一曲率半徑，ROBJ1為第一實施例至第四實施例中，物鏡組LG1OBJ、LG2OBJ、LG3OBJ、LG4OBJ中最靠近物側之透鏡L11、L213、L31、L41之物側面S11、S21、S31、S41之一曲率半徑，TTLOBJ為第一實施例至第四實施例中，物鏡組LG1OBJ、LG2OBJ、LG3OBJ、LG4OBJ中最靠近物側之透鏡L11、L213、L31、L41之物側面S11、S21、S31、S41至最靠近像側之透鏡L14、P22、L33、L44之像側面S17、S29、S35、S47於光軸OA1、OA2、OA3、OA4上之一間距，R92為第一實施例至第四實施例中，正立鏡組LG1EL、LG2EL、LG3EL、LG4EL中最靠近像側之透鏡L19、L29、L39、L49之像側面S116、S218、S314、S416之一曲率半徑，TTLELMaxM為第一實施例至第四實施例中於最大放大倍率時正立鏡組LG1EL、LG2EL、LG3EL、LG4EL中最靠近物側之透鏡L15、L25、L35、L45之物側面S19、S211、S37、S49至最靠近像側之透鏡L19、L29、L39、L49之像側面S116、S218、S314、S416於光軸OA1、OA2、OA3、OA4上之一間距。使得光學變倍系統1、2、3、4能有效的增加視場、有效的修正像差、有效的修正色差。
Among them, FOV is one of the fields of view of the
現詳細說明本發明之光學變倍系統之第一實施例。請同時參閱第1A圖及第1B圖，第1A圖係依據本發明之光學變倍系統之第一實施例於最小放大倍率時之透鏡配置示意圖，第1B圖係依據本發明之光學變倍系統之第一實施例於最大放大倍率時之透鏡配置示意圖。光學變倍系統1沿著一光軸OA1從一物側至一像側依序包括一物鏡組LG1OBJ、一正立鏡組LG1EL、及一目鏡組LG1EYE。物鏡組LG1OBJ包括一第I-1透鏡L11、一第I-2透鏡L12、一第I-3透鏡L13及一第I-4透鏡L14，第I-1透鏡L11與第I-2
透鏡L12膠合。正立鏡組LG1EL沿著光軸OA1從物側至像側依序包括一第一透鏡群LG11、一第二透鏡群LG12及一第三透鏡群LG13，第一透鏡群LG11包括一第Ⅱ-1-1透鏡L15，第二透鏡群LG12包括一第Ⅱ-2-1透鏡L16及一第Ⅱ-2-2透鏡L17，第Ⅱ-2-1透鏡L16與第Ⅱ-2-2透鏡L17膠合，第三透鏡群LG13包括一第Ⅱ-3-1透鏡L18及一第Ⅱ-3-2透鏡L19，第Ⅱ-3-1透鏡L18與第Ⅱ-3-2透鏡L19膠合。目鏡組LG1EYE包括一第III-1透鏡L110、一第III-2透鏡L111及一第III-3透鏡L112，第III-1透鏡L110與第III-2透鏡L111膠合。第I-1透鏡L11、第I-2透鏡L12、第I-3透鏡L13、第I-4透鏡L14、第Ⅱ-1-1透鏡L15、第Ⅱ-2-1透鏡L16、第Ⅱ-2-2透鏡L17、第Ⅱ-3-1透鏡L18、第Ⅱ-3-2透鏡L19、第III-1透鏡L110、第III-2透鏡L111及第III-3透鏡L112沿著光軸OA1從物側至像側依序排列。第二透鏡群LG12及第三透鏡群LG13可沿著光軸OA1移動，以改變第一透鏡群LG11及第二透鏡群LG12之間距、第二透鏡群LG12及第三透鏡群LG13之間距、第三透鏡群LG13及第二成像面IMA12之間距，使得正立鏡組LG1EL改變放大倍率，進而使光學變倍系統1改變放大倍率，第一實施例之正立鏡組LG1EL其放大倍率為可變介於1倍至4倍，也就是說最小放大倍率為1倍，最大放大倍率為4倍。補充說明在不同的放大倍率下，光學變倍系統的視場會有所不同，以條件(1)：20度
第I-2透鏡L12為平凹透鏡，其像側面S13為平面；第I-3透鏡L13為平凹透鏡具有負屈光力，由玻璃材質製成，其物側面S14為凹面，像側面S15為平面，物側面S14為球面表面；第I-4透鏡L14為平凸透鏡具有正屈光力，由玻璃材質製成，其物側面S16為凸面，像側面S17為平面，物側面S16為球面表面； The 1-2th lens L12 is a plano-concave lens, and its image side S13 is a plane; the 1-3th lens L13 is a plano-concave lens with negative refractive power, made of glass material, its object side S14 is concave, the image side S15 is a plane, and the object side S14 is concave. The side S14 is a spherical surface; the 1-4th lens L14 is a plano-convex lens with positive refractive power, made of glass material, and its object side S16 is a convex surface, and the image side S17 is a plane, and the object side S16 is a spherical surface;
利用上述物鏡組LG1OBJ、正立鏡組LG1EL、目鏡組LG1EYE及至少滿足條件(1)至條件(7)其中一條件之設計，使得光學變倍系統1能有效的增加視場、有效的修正像差、有效的修正色差。
Using the above-mentioned objective lens group LG1 OBJ , upright lens group LG1 EL , eyepiece group LG1 EYE and the design that satisfies at least one of the conditions (1) to (7), the
表一為第1A圖、第1B圖中光學變倍系統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光學變倍系統1之相關參數值及其對應條件(1)至條件(7)之計算值，由表二可知，第一實施例之光學變倍系統1皆能滿足條件(1)至條件(7)之要求。
Table 2 shows the relevant parameter values of the
另外，第一實施例之光學變倍系統1的光學性能也可達到要求。由第2A圖可看出，第一實施例之光學變倍系統1於最小放大倍率時，其場曲介於-0.4mm至0.1mm之間。由第2B圖可看出，第一實施例之光學變倍系統1於最小放大倍率時，其畸變介於-0.2%至0.8%之間。由第2C圖可看出，第一實施例之光學變倍系統1於最大放大倍率時，其場曲介於-0.5mm至0.7mm之間。由第2D圖可看出，第一實施例之光學變倍系統1於最大放大倍率時，其畸變介於0%至1.6%之間。顯見第一實施例之光學變倍系統1之場曲、畸變都能被有效修正，從而得到較佳的光學性能。
In addition, the optical performance of the
請同時參閱第3A圖及第3B圖，第3A圖係依據本發明之光學變倍系統之第二實施例於最小放大倍率時之透鏡配置示意圖，第3B圖係依據本發明之光學變倍系統之第二實施例於最大放大倍率時之透鏡配置示意圖。光學變倍系統2沿著一光軸OA2從一物側至一像側依序包括一物鏡組LG2OBJ、一正立鏡組LG2EL、及一目鏡組LG2EYE。物鏡組LG2OBJ包括一
第I-5透鏡L213、一第I-1透鏡L21、一第I-2透鏡L22、一第一稜鏡P21及一第二稜鏡P22，第I-1透鏡L21與第I-2透鏡L22膠合。正立鏡組LG2EL沿著光軸OA2從物側至像側依序包括一第一透鏡群LG21、一第二透鏡群LG22及一第三透鏡群LG23，第一透鏡群LG21包括一第Ⅱ-1-1透鏡L25，第二透鏡群LG22包括一第Ⅱ-2-1透鏡L26及一第Ⅱ-2-2透鏡L27，第Ⅱ-2-1透鏡L26與第Ⅱ-2-2透鏡L27膠合，第三透鏡群LG23包括一第Ⅱ-3-1透鏡L28及一第Ⅱ-3-2透鏡L29，第Ⅱ-3-1透鏡L28與第Ⅱ-3-2透鏡L29膠合。目鏡組LG2EYE包括一第III-1透鏡L210、一第III-2透鏡L211及一第III-3透鏡L212，第III-1透鏡L210與第III-2透鏡L211膠合。第I-5透鏡L213、第I-1透鏡L21、第I-2透鏡L22、第一稜鏡P21、第二稜鏡P22、第Ⅱ-1-1透鏡L25、第Ⅱ-2-1透鏡L26、第Ⅱ-2-2透鏡L27、第Ⅱ-3-1透鏡L28、第Ⅱ-3-2透鏡L29、第III-1透鏡L210、第III-2透鏡L211及第III-3透鏡L212沿著光軸OA2從物側至像側依序排列。第二透鏡群LG22及第三透鏡群LG23可沿著光軸OA2移動，以改變第一透鏡群LG21及第二透鏡群LG22之間距、第二透鏡群LG22及第三透鏡群LG23之間距、第三透鏡群LG23及第二成像面IMA22之間距，使得正立鏡組LG2EL改變放大倍率，進而使光學變倍系統2改變放大倍率，第二實施例之正立鏡組LG2EL其放大倍率為可變介於1倍至4倍，也就是說最小放大倍率為1倍，最大放大倍率為4倍。物鏡組LG2OBJ具有5倍放大倍率。成像時，來自物側之光線先經過物鏡組LG2OBJ放大5倍，倒立成像於第一成像面IMA21，再經過正立鏡組LG2EL放大1倍至4倍，正立成像於第二成像面IMA22，最後再經過目鏡組LG2EYE由人眼觀看成像，本實施例之光學變倍系統2其成像放大倍率為5倍至20倍。根
據【實施方式】第一至六段落，其中：
Please refer to Fig. 3A and Fig. 3B at the same time, Fig. 3A is a schematic diagram of the lens configuration at the minimum magnification of the second embodiment of the optical zoom system according to the present invention, and Fig. 3B is the optical zoom system according to the present invention The second embodiment is a schematic diagram of the lens configuration at the maximum magnification. The
第I-5透鏡L213為雙凸透鏡具有正屈光立，由玻璃材質製成，其物側面S11為凸面，像側面S12為凸面，物側面S11與像側面S12皆為球面表面；第I-2透鏡L22為雙凹透鏡，其像側面S25為凹面；第一稜鏡P21由玻璃材質製成，其物側面S26與像側面S27皆為平面；第二稜鏡P22由玻璃材質製成，其物側面S28與像側面S29皆為平面； The 1-5th lens L213 is a biconvex lens with a positive refractive stand, made of glass material, its object side S11 is convex, the image side S12 is convex, and both the object side S11 and the image side S12 are spherical surfaces; the 1-2 lens L22 It is a biconcave lens, and its image side S25 is concave; the first lens P21 is made of glass material, and its object side S26 and image side S27 are both flat; the second lens P22 is made of glass, and its object side S28 and Like the side S29 is flat;
利用上述物鏡組LG2OBJ、正立鏡組LG2EL、目鏡組LG2EYE及至少滿足條件(1)至條件(7)其中一條件之設計，使得光學變倍系統2能有效的增加視場、有效的修正像差、有效的修正色差。
By utilizing the above-mentioned objective lens group LG2 OBJ , upright lens group LG2 EL , eyepiece group LG2 EYE and the design that satisfies at least one of conditions (1) to (7), the
表三為第3A圖、第3B圖中光學變倍系統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光學變倍系統2之相關參數值及其對應條件(1)至條件(7)之計算值，由表四可知，第二實施例之光學變倍系統2皆能滿足條件(1)至條件(7)之要求。
Table 4 shows the relevant parameter values of the
另外，第二實施例之光學變倍系統2的光學性能也可達到要求。由第4A圖可看出，第二實施例之光學變倍系統2於最小放大倍率時，其場曲介於-0.4mm至0.1mm之間。由第4B圖可看出，第二實施例之光學變倍系統2於最小放大倍率時，其畸變介於0%至1.6%之間。由第4C圖可看出，第二實施例之光學變倍系統2於最大放大倍率時，其場曲介於-0.3mm至0.5mm之間。由第4D圖可看出，第二實施例之光學變倍系統2於最大放大倍率時，其畸變介於0%至1.6%之間。
In addition, the optical performance of the
顯見第二實施例之光學變倍系統2之場曲、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 field curvature and distortion of the
請同時參閱第5A圖及第5B圖，第5A圖係依據本發明之光學變倍系統之第三實施例於最小放大倍率時之透鏡配置示意圖，第5B圖係依據本發明之光學變倍系統之第三實施例於最大放大倍率時之透鏡配置示意圖。光學變倍系統3沿著一光軸OA3從一物側至一像側依序包括一物鏡組LG3OBJ、一正立鏡組LG3EL、及一目鏡組LG3EYE。物鏡組LG3OBJ包括一第I-1透鏡L31、一第I-2透鏡L32及一第I-3透鏡L33，第I-1透鏡L31與
第I-2透鏡L32膠合。正立鏡組LG3EL沿著光軸OA3從物側至像側依序包括一第一透鏡群LG31、一第二透鏡群LG32及一第三透鏡群LG33，第一透鏡群LG31包括一第Ⅱ-1-1透鏡L35，第二透鏡群LG32包括一第Ⅱ-2-1透鏡L36及一第Ⅱ-2-2透鏡L37，第Ⅱ-2-1透鏡L36與第Ⅱ-2-2透鏡L37膠合，第三透鏡群LG33包括一第Ⅱ-3-1透鏡L38及一第Ⅱ-3-2透鏡L39，第Ⅱ-3-1透鏡L38與第Ⅱ-3-2透鏡L39膠合。目鏡組LG3EYE包括一第III-1透鏡L310、一第III-2透鏡L311及一第III-3透鏡L312，第III-1透鏡L310與第III-2透鏡L311膠合。第I-1透鏡L31、第I-2透鏡L32、第I-3透鏡L33、第Ⅱ-1-1透鏡L35、第Ⅱ-2-1透鏡L36、第Ⅱ-2-2透鏡L37、第Ⅱ-3-1透鏡L38、第Ⅱ-3-2透鏡L39、第III-1透鏡L310、第III-2透鏡L311及第III-3透鏡L312沿著光軸OA3從物側至像側依序排列。第二透鏡群LG32及第三透鏡群LG33可沿著光軸OA3移動，以改變第一透鏡群LG31及第二透鏡群LG32之間距、第二透鏡群LG32及第三透鏡群LG33之間距、第三透鏡群LG33及第二成像面IMA32之間距，使得正立鏡組LG3EL改變放大倍率，進而使光學變倍系統3改變放大倍率，第一實施例之正立鏡組LG3EL其放大倍率為可變介於1倍至4倍，也就是說最小放大倍率為1倍，最大放大倍率為4倍。物鏡組LG3OBJ具有4倍放大倍率。成像時，來自物側之光線先經過物鏡組LG3OBJ放大4倍，倒立成像於第一成像面IMA31，再經過正立鏡組LG3EL放大1倍至4倍，正立成像於第二成像面IMA32，最後再經過目鏡組LG3EYE由人眼觀看成像，本實施例之光學變倍系統3其成像放大倍率為4倍至16倍。根據【實施方式】第一至六段落，其中：
Please refer to Fig. 5A and Fig. 5B at the same time, Fig. 5A is a schematic diagram of the lens configuration at the minimum magnification of the third embodiment of the optical zoom system according to the present invention, and Fig. 5B is the optical zoom system according to the present invention The third embodiment is a schematic diagram of the lens configuration at the maximum magnification. The
第I-2透鏡L32為彎月型透鏡，其像側面S33為凸面；第I-3 透鏡L33為平凸透鏡具有正屈光力，由玻璃材質製成，其物側面S34為凸面，像側面S35為平面，物側面S34為球面表面； The I-2th lens L32 is a meniscus lens, and its image side S33 is a convex surface; The lens L33 is a plano-convex lens with positive refractive power, made of glass material, the object side S34 is a convex surface, the image side S35 is a plane, and the object side S34 is a spherical surface;
利用上述物鏡組LG3OBJ、正立鏡組LG3EL、目鏡組LG3EYE及至少滿足條件(1)至條件(7)其中一條件之設計，使得光學變倍系統3能有效的增加視場、有效的修正像差、有效的修正色差。
Utilizing the above-mentioned objective lens group LG3 OBJ , upright lens group LG3 EL , eyepiece group LG3 EYE and the design that satisfies at least one of the conditions (1) to (7), the
表五為第5A圖、第5B圖中光學變倍系統2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光學變倍系統3之相關參數值及其對應條件(1)至條件(7)之計算值，由表六可知，第三實施例之光學變倍系統3皆能滿足條件(1)至條件(7)之要求。
Table 6 shows the relevant parameter values of the
另外，第三實施例之光學變倍系統3的光學性能也可達到要求。由第6A圖可看出，第三實施例之光學變倍系統3於最小放大倍率時，其場曲介於-0.4mm至0.1mm之間。由第6B圖可看出，第三實施例之光學變倍系統3於最小放大倍率時，其畸變介於0%至1.8%之間。由第6C圖可看出，第三實施例之光學變倍系統3於最大放大倍率時，其場曲介於-0.4mm至0.6mm之間。由第6D圖可看出，第三實施例之光學變倍系統3於最大放大倍率時，其畸變介於0%至1.7%之間。
In addition, the optical performance of the
顯見第三實施例之光學變倍系統3之場曲、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 field curvature and distortion of the
請同時參閱第7A圖及第7B圖，第7A圖係依據本發明之光學變倍系統之第四實施例於最小放大倍率時之透鏡配置示意圖，第7B圖係依據本發明之光學變倍系統之第四實施例於最大放大倍率時之透鏡配置示意圖。光學變倍系統4沿著一光軸OA4從一物側至一像側依序包括一物鏡組LG4OBJ、一正立鏡組LG4EL、及一目鏡組LG4EYE。物鏡組LG4OBJ包括一第I-1透鏡L41、一第I-2透鏡L42、一第I-3透鏡L43及一第I-4透鏡L44，第I-1透鏡L41與第I-2透鏡L42膠合。正立鏡組LG4EL沿著光軸OA4從物側至像側依序包括一第一透鏡群LG41、一第二透鏡群LG42及一第三透鏡群LG43，第一透鏡群LG41包括一第Ⅱ-1-1透鏡L45，第二透鏡群LG42包括一第Ⅱ-2-1透鏡L46及一第Ⅱ-2-2透鏡L47，第Ⅱ-2-1透鏡L46與第Ⅱ-2-2透鏡L47膠合，第三透鏡群LG43包括一第Ⅱ-3-1透鏡L48及一第Ⅱ-3-2透鏡L49，第Ⅱ-3-1透鏡L48與第Ⅱ-3-2透鏡L49膠合。目鏡組LG4EYE包括一第III-1透鏡L410、一第III-2透鏡L411及一第III-3透鏡L412，第III-1
透鏡L410與第III-2透鏡L411膠合。第I-1透鏡L41、第I-2透鏡L42、第I-3透鏡L43、第I-4透鏡L44、第Ⅱ-1-1透鏡L45、第Ⅱ-2-1透鏡L46、第Ⅱ-2-2透鏡L47、第Ⅱ-3-1透鏡L48、第Ⅱ-3-2透鏡L49、第III-1透鏡L410、第III-2透鏡L411及第III-3透鏡L412沿著光軸OA4從物側至像側依序。第二透鏡群LG42及第三透鏡群LG43可沿著光軸OA4移動，以改變第一透鏡群LG41及第二透鏡群LG42之間距、第二透鏡群LG42及第三透鏡群LG43之間距、第三透鏡群LG43及第二成像面IMA42之間距，使得正立鏡組LG4EL改變放大倍率，進而使光學變倍系統4改變放大倍率，第四實施例之正立鏡組LG4EL其放大倍率為可變介於1倍至4倍，也就是說最小放大倍率為1倍，最大放大倍率為4倍。物鏡組LG4OBJ具有3倍放大倍率。成像時，來自物側之光線先經過物鏡組LG4OBJ放大3倍，倒立成像於第一成像面IMA41，再經過正立鏡組LG4EL放大1倍至4倍，正立成像於第二成像面IMA42，最後再經過目鏡組LG4EYE由人眼觀看成像，本實施例之光學變倍系統4其成像放大倍率為3倍至12倍。根據【實施方式】第一至六段落，其中：
Please refer to Fig. 7A and Fig. 7B at the same time, Fig. 7A is a schematic diagram of the lens configuration at the minimum magnification of the fourth embodiment of the optical zoom system according to the present invention, and Fig. 7B is the optical zoom system according to the present invention The fourth embodiment is a schematic diagram of the lens configuration at the maximum magnification. The
第I-2透鏡L42為彎月型透鏡，其像側面S43為凸面；第I-3透鏡L43為彎月型透鏡具有正屈光力，由玻璃材質製成，其物側面S44為凸面，像側面S45為凹面，物側面S44與像側面S45皆為球面表面；第I-4透鏡L44為彎月型透鏡具有負屈光力，由玻璃材質製成，其物側面S46為凸面，像側面S47為凹面，物側面S46與像側面S47皆為球面表面； The I-2 lens L42 is a meniscus lens, and its image side S43 is convex; the I-3 lens L43 is a meniscus lens with positive refractive power, made of glass material, its object side S44 is convex, and its image side S45 It is a concave surface, and the object side S44 and the image side S45 are spherical surfaces; the 1-4th lens L44 is a meniscus lens with negative refractive power, made of glass material, its object side S46 is a convex surface, and the image side S47 is a concave surface. Both the side S46 and the image side S47 are spherical surfaces;
利用上述物鏡組LG4OBJ、正立鏡組LG4EL、目鏡組LG4EYE及至少滿足條件(1)至條件(7)其中一條件之設計，使得光學變倍系統4能有效的增加視場、有效的修正像差、有效的修正色差。
Utilizing the above-mentioned objective lens group LG4 OBJ , upright lens group LG4 EL , eyepiece group LG4 EYE and the design that satisfies at least one of the conditions (1) to (7), the
表七為第7A圖、第7B圖中光學變倍系統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光學變倍系統4之相關參數值及其對應條件(1)至條件(7)之計算值，由表八可知，第四實施例之光學變倍系統4皆能滿足條件(1)至條件(7)之要求。
Table 8 shows the relevant parameter values of the
另外，第四實施例之光學變倍系統4的光學性能也可達到要求。由第8A圖可看出，第四實施例之光學變倍系統4於最小放大倍率時，其場曲介於-0.4mm至0.1mm之間。由第8B圖可看出，第四實施例之光學
變倍系統4於最小放大倍率時，其畸變介於-3%至0%之間。由第8C圖可看出，第四實施例之光學變倍系統4於最大放大倍率時，其場曲介於-0.4mm至0.4mm之間。由第8D圖可看出，第四實施例之光學變倍系統4於最大放大倍率時，其畸變介於0%至1.6%之間。顯見第四實施例之光學變倍系統4之場曲、畸變都能被有效修正，從而得到較佳的光學性能。
In addition, the optical performance 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 in the above embodiments, it is not intended to limit the present invention. Anyone who is familiar with the art 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 determined by the scope of the appended patent application.
1:光學變倍系統 1: Optical zoom system
LG1OBJ:物鏡組 LG1 OBJ : Objective lens group
LG1EL:正立鏡組 LG1 EL : Upright Mirror Group
LG1EYE:目鏡組 LG1 EYE : Eyepiece group
L11:第I-1透鏡 L11: Lens I-1
L12:第I-2透鏡 L12: Lens I-2
L13:第I-3透鏡 L13: Lens I-3
L14:第I-4透鏡 L14: I-4th lens
LG11:第一透鏡群 LG11: The first lens group
LG12:第二透鏡群 LG12: Second lens group
LG13:第三透鏡群 LG13: The third lens group
L15:第Ⅱ-1-1透鏡 L15: Ⅱ-1-1 lens
L16:第Ⅱ-2-1透鏡 L16: Ⅱ-2-1 lens
L17:第Ⅱ-2-2透鏡 L17: Ⅱ-2-2 lens
L18:第Ⅱ-3-1透鏡 L18: Lens II-3-1
L19:第Ⅱ-3-2透鏡 L19: Ⅱ-3-2 lens
L110:第III-1透鏡 L110: Lens III-1
L111:第III-2透鏡 L111: Lens III-2
L112:第III-3透鏡 L112: Lens III-3
IMA11:第一成像面 IMA11: The first imaging plane
IMA12:第二成像面 IMA12: Second imaging plane
OA1:光軸 OA1: Optical axis
S11:第I-1透鏡物側面 S11: Object side of the I-1th lens
S12:第I-1透鏡像側面 S12: I-1 lens image side
S12:第I-2透鏡物側面 S12: I-2 lens object side
S13:第I-2透鏡像側面 S13: I-2 lens image side
S14:第I-3透鏡物側面 S14: I-3 lens object side
S15:第I-3透鏡像側面 S15: I-3 lens image side
S16:第I-4透鏡物側面 S16: I-4th lens object side
S17:第I-4透鏡像側面 S17: I-4th lens image side
S18:第一成像面 S18: The first imaging plane
S19:第Ⅱ-1-1透鏡物側面 S19: Ⅱ-1-1 lens object side
S110:第Ⅱ-1-1透鏡像側面 S110: Ⅱ-1-1 lens image side
S111:第Ⅱ-2-1透鏡物側面 S111: Ⅱ-2-1 lens object side
S112:第Ⅱ-2-1透鏡像側面 S112: Ⅱ-2-1 lens image side
S112:第Ⅱ-2-2透鏡物側面 S112: Ⅱ-2-2 lens object side
S113:第Ⅱ-2-2透鏡像側面 S113: Ⅱ-2-2 lens image side
S114:第Ⅱ-3-1透鏡物側面 S114: Ⅱ-3-1 lens object side
S115:第Ⅱ-3-1透鏡像側面 S115: Ⅱ-3-1 Lens Image Side
S115:第Ⅱ-3-2透鏡物側面 S115: Object side of the Ⅱ-3-2 lens
S116:第Ⅱ-3-2透鏡像側面 S116: Ⅱ-3-2 lens image side
S117:第二成像面 S117: Second imaging plane
S118:第III-1透鏡物側面 S118: Object side of lens III-1
S119:第III-1透鏡像側面 S119: Image side of lens III-1
S119:第III-2透鏡物側面 S119: Object side of lens III-2
S120:第III-2透鏡像側面 S120: Image side of lens III-2
S121:第III-3透鏡物側面 S121: Object side of lens III-3
S122:第III-3透鏡像側面 S122: Image side of lens III-3
Claims (10)
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