JPH09179028A - High-power zoom lens - Google Patents
High-power zoom lensInfo
- Publication number
- JPH09179028A JPH09179028A JP8341693A JP34169396A JPH09179028A JP H09179028 A JPH09179028 A JP H09179028A JP 8341693 A JP8341693 A JP 8341693A JP 34169396 A JP34169396 A JP 34169396A JP H09179028 A JPH09179028 A JP H09179028A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- lens group
- power
- focal length
- wide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/143—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
- G02B15/1431—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive
- G02B15/143103—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive arranged ++-
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は高倍率ズームレンズ
に係り、より詳しくはコンパクト形カメラにおいて、広
角端から望遠端までの収差特性が良好であり、量産性に
優れた高倍率ズームレンズに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-power zoom lens, and more particularly to a high-power zoom lens in a compact camera, which has good aberration characteristics from the wide-angle end to the telephoto end and is excellent in mass productivity.
【０００２】[0002]
【従来の技術】レンズシャッタ用ズームレンズは２群方
式と３群方式に分けられるが、２群方式のズームレンズ
は、２倍以上のズーム比を有する場合に小形化が容易で
ないという問題があり、３群方式のズームレンズは、ズ
ーム比が３倍程度に制限されてるのでコンパクトカメラ
用としては充分ではない。2. Description of the Related Art Zoom lenses for lens shutters can be divided into a two-group type and a three-group type. However, the two-group type zoom lens has a problem that it is not easy to downsize it when it has a zoom ratio of 2 times or more. Since the zoom ratio of the three-group type zoom lens is limited to about three times, it is not sufficient for a compact camera.
【０００３】従来のレンズシャッタ用ズームレンズとし
ては、米国特許第4,978,204号及び同第5,002,373号、同
第5,033,832号に記載されたものがある。Conventional zoom lenses for lens shutters include those described in US Pat. Nos. 4,978,204, 5,002,373, and 5,033,832.
【０００４】しかしながら、前記米国特許第4,978,204
号及び第5,002,373号などに記載される従来のレンズ
は、３群方式で凡そ２．５倍のズーム比であり、１１枚
のレンズから構成されてコンパクトカメラのスリム化が
満足できない。However, said US Pat. No. 4,978,204
Nos. 5,002,373 and the like have a zoom ratio of about 2.5 times in a three-group system, and the conventional lens is composed of 11 lenses, which makes it difficult to slim the compact camera.
【０００５】また、前記米国特許第5,033,832号に記載
される従来のレンズは、凡そ２．７倍のズーム比で、１
２枚のレンズから構成されるので、要求される３．５倍
の高いズーム比が満足できない。The conventional lens described in US Pat. No. 5,033,832 has a zoom ratio of about 2.7 times,
Since it is composed of two lenses, the required high zoom ratio of 3.5 times cannot be satisfied.
【０００６】[0006]
【発明が解決しようとする課題】本発明は高倍率ズーム
レンズに係り、より詳しくはコンパクト形カメラにおい
て、広角端から望遠端までの収差特性が良好であり、量
産性が優れている高倍率ズームレンズを提供することを
解決すべき課題とする。The present invention relates to a high-power zoom lens, and more particularly, in a compact camera, the high-power zoom lens has good aberration characteristics from the wide-angle end to the telephoto end and is excellent in mass productivity. Providing a lens is a problem to be solved.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するた
め、本発明によるズームレンズは、物体側から順に、正
の屈折力を有する第１レンズ群と、正の屈折力を有する
第２レンズ群と、負の屈折力を有する第３レンズ群とか
らなり、広角端から望遠端への変倍時に前記第１レンズ
群と第２レンズ群の間隙が変化され、同時に前記第２レ
ンズ群と第３レンズ群の間隙が変化されるようになって
おり、次の条件を満足する。 ３．５＜ｆT／ｆW （１） ＬT／ｆT＜０．９５ （２） −０．５＜ｆ1n／ｆT＜−０．１ （３） ここで、ｆTは望遠端での全体レンズ系の焦点距離であ
り、ｆWは広角端での全体レンズ系の焦点距離であり、
前記ＬTは望遠端において、第１レンズ面から像面まで
の距離を表し、前記ｆ1nは第１レンズ群で負の屈折力を
有するレンズの焦点距離を表す。In order to solve the above problems, a zoom lens according to the present invention comprises, in order from the object side, a first lens group having a positive refractive power and a second lens group having a positive refractive power. And a third lens group having a negative refracting power, the gap between the first lens group and the second lens group is changed at the time of zooming from the wide-angle end to the telephoto end, and at the same time, the second lens group and the second lens group. The gap between the three lens groups is changed, and the following conditions are satisfied. 3.5 <f T / f W (1) L T / f T <0.95 (2) −0.5 <f 1n / f T <−0.1 (3) where f T is the telephoto end Is the focal length of the whole lens system at, and f W is the focal length of the whole lens system at the wide-angle end,
The L T represents the distance from the first lens surface to the image surface at the telephoto end, and the f 1n represents the focal length of the lens having a negative refractive power in the first lens group.
【０００８】また、本発明の他の態様によるズームレン
ズは、次の条件を更に満足する。 １．５＜ｆII,IIIW ／ｆII,IIT＜３．６ （４） ここで、ｆII,IIIW は広角端で第２レンズ群と第３レン
ズ群の合成焦点距離を、ｆII,IITは望遠端で第２レンズ
群と第３レンズ群の合成焦点距離を表す。また、前記目
的を達成するための本発明の構成は、全体のレンズが球
面から構成され，前記第２レンズ群と第３レンズ群の間
に絞りが設けられる。A zoom lens according to another aspect of the present invention further satisfies the following conditions. 1.5 <f II, IIIW / f II, IIT <3.6 (4) where f II, IIIW is the composite focal length of the second lens group and the third lens group at the wide-angle end, and f II, IIT Represents the combined focal length of the second lens group and the third lens group at the telephoto end. Further, in the configuration of the present invention for achieving the above object, the entire lens is formed of a spherical surface, and a diaphragm is provided between the second lens group and the third lens group.
【０００９】[0009]
【発明の実施の形態】本発明の好ましい実施例を添付さ
れる図面を参照して詳細に説明する。添付する図１、図
５、図９、図１３及び図１７に図示されるように本発明
の実施例に従う高倍率ズームレンズの構成は、物体側か
ら順に、負の屈折力を有する第１レンズ１、両面が凸な
正の屈折力を有する第２レンズ２、及び第３レンズから
なる全体的に正の屈折力を有する第１レンズ群Ｉと、両
面が凹で負の屈折力を有する第４レンズ４、正の屈折力
を有する第５レンズ５、像面側が凸な正の屈折力を有す
る第６レンズ６、像面側が凸なメニスカスレンズで負の
屈折力を有する第７レンズ７、及び両面が凸な正の屈折
力を有する第８レンズ８からなって全体的に正の屈折力
を有する第２レンズ群IIと、像側面が凸なメニスカスレ
ンズで正の屈折力を有する第９レンズ９、物体側面が凸
な負の屈折力を有する第１０レンズ１０、及び物体側面
が凹な負の屈折力を有する第１１レンズ１１とからなっ
て全体的に負の屈折力を有する第３レンズ群III とから
構成される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, FIG. 5, FIG. 9, FIG. 13, and FIG. 17 attached, the structure of the high-power zoom lens according to the embodiment of the present invention is the first lens having a negative refractive power in order from the object side. 1. a first lens group I having a positive refractive power as a whole composed of a second lens 2 having a convex refractive power on both sides and a third lens; and a first lens group I having a concave refractive power on both sides 4, a fourth lens 4, a fifth lens 5 having a positive refractive power, a sixth lens 6 having a positive refractive power on the image side, a seventh meniscus lens 7 having a negative refractive power on the image side, And a second lens group II having an overall positive refracting power composed of an eighth lens 8 having a convex refracting power on both sides, and a ninth lens group having a positive refracting power with a meniscus lens having a convex image side surface. The lens 9, the tenth lens 10 having a negative refractive power in which the object side surface is convex, and the object side surface Composed of the third lens group III having a first lens 11 Metropolitan negative refractive power overall consist with concave negative refractive power.
【００１０】広角端から望遠端への変倍時に、第１レン
ズ群Ｉと第２レンズ群IIの間隙が変化され、同時に、第
２レンズ群IIと第３レンズ群III の間隙が変化する。本
発明の実施例では、第２レンズ群IIと第３レンズ群III
との間に開口絞り２０が配置される。During zooming from the wide-angle end to the telephoto end, the gap between the first lens group I and the second lens group II is changed, and at the same time, the gap between the second lens group II and the third lens group III is changed. In the embodiment of the present invention, the second lens group II and the third lens group III
Aperture stop 20 is disposed between and.
【００１１】上述した構成による本発明の実施例に従う
高倍率ズームレンズの作用を説明すると次の通りであ
る。条件式１は高倍率を得るための望遠端と広角端の焦
点距離比に関係するものであり、条件式２はスリムコン
パクト化をための望遠比に関係するものである。The operation of the high-power zoom lens according to the embodiment of the present invention having the above-described structure will be described below. Conditional expression 1 relates to the focal length ratio at the telephoto end and wide-angle end for obtaining a high magnification, and conditional expression 2 relates to the telephoto ratio for slim compactness.
【００１２】望遠比（ＬT／ｆT）で高倍率、スリム化を
達成するためには、望遠端の全長は短くて、望遠端の焦
点距離は長いほうが望ましいが、無理に望遠比を調節す
る場合には各レンズ群のパワーを大きくして敏感度を高
める結果を招来し、生産が困難になり、かつ、収差補正
が難しくなる。従って、ｆ＝ｆ1×ｍ2×ｍ3の式による
各要素の適切な配分が必要である。In order to achieve high magnification and slimness at the telephoto ratio (L T / f T ), it is desirable that the total length at the telephoto end be short and the focal length at the telephoto end be long, but the telephoto ratio is forcibly adjusted. In that case, the power of each lens group is increased to increase the sensitivity, resulting in difficulty in production and correction of aberrations. Therefore, it is necessary to properly distribute each element by the formula of f = f 1 × m 2 × m 3 .
【００１３】ｆ1は第１レンズ群の焦点距離を、ｍ2は第
２レンズ群の横倍率を、ｍ3は第３レンズ群の横倍率を
表す。F 1 is the focal length of the first lens group, m 2 is the lateral magnification of the second lens group, and m 3 is the lateral magnification of the third lens group.
【００１４】条件式３を満足しない場合には、第１レン
ズ群が一枚の負の屈折力を有するレンズと、正の屈折力
を有するレンズとから構成されているので、コマ収差の
補正が難しくなる。If conditional expression 3 is not satisfied, the first lens group is composed of one lens having a negative refracting power and one lens having a positive refracting power, so that the coma aberration is corrected. It gets harder.
【００１５】条件式４は広角端での第２レンズ群と第３
レンズ群の合成屈折力に対する比を表わしたもので、全
体のズーム比及びスリム化に関係する式である。合成屈
折力の比が条件式４を満足できない場合は、球面収差及
び非点収差が発生して全体的な性能補正が難しくなる。Conditional expression 4 is the second lens group and the third lens group at the wide-angle end.
It represents the ratio of the lens group to the combined refracting power, and is an equation related to the overall zoom ratio and slimming. When the ratio of the combined refractive powers does not satisfy the conditional expression 4, spherical aberration and astigmatism occur and it becomes difficult to correct the overall performance.
【００１６】上述の構成で前記の条件を満足して本発明
を容易に実施できる実施例の値は次の通りである。本発
明の各実施例に従って開口絞りは前記第２レンズ群IIと
第３レンズ群III の間に装着されている。The values of the embodiment which can easily implement the present invention with the above-mentioned structure satisfying the above conditions are as follows. According to each embodiment of the present invention, the aperture stop is mounted between the second lens group II and the third lens group III.
【００１７】前記条件（１〜４）を満足する本発明の第
１実施例に従う実施例値は次の〈表１〉の通りである。
次のｆは焦点距離を、ｒｉ（ｉ＝１〜２０）は屈折面の
曲率半径を、ｄｉ（ｉ＝１〜２０）はレンズの厚さ、ま
たはレンズ間の距離を、Ｎはレンズのｄ−ｌｉｎｅ屈折
率を、νはレンズのアッベ数を、ｍは全体レンズ系の倍
率を、Ｗは半画角をいう。本発明の第１実施例に従う大
口径ズームレンズの絞り値Ｆ、焦点距離ｆ、画角は次の
〈表１〉の通りで、実施例値は次の〈表２〉の通りであ
る。 The values of the embodiment according to the first embodiment of the present invention satisfying the above conditions (1 to 4) are as shown in Table 1 below.
Next, f is the focal length, ri (i = 1 to 20) is the radius of curvature of the refracting surface, di (i = 1 to 20) is the lens thickness or the distance between lenses, and N is the d of the lens. -Line is the refractive index, ν is the Abbe number of the lens, m is the magnification of the entire lens system, and W is the half angle of view. The aperture value F, the focal length f, and the angle of view of the large-diameter zoom lens according to the first embodiment of the present invention are as shown in <Table 1> below, and the example values are as shown in <Table 2> below.
【００１８】本発明の第２実施例に従う大口径ズームレ
ンズの絞り値Ｆ、焦点距離ｆ、画角は次の〈表３〉の通
り 、実施例値は次の〈表４〉の通りである。 The aperture value F, focal length f, and angle of view of the large-diameter zoom lens according to the second embodiment of the present invention are as shown in Table 3 below, and the example values are as shown in Table 4 below. .
【００１９】本発明の第３実施例に従う大口径ズームレ
ンズの絞り値Ｆ、焦点距離ｆ、画角は次の〈表５〉の通
り、実施例値は次の〈表６〉の通りである。 The aperture value F, focal length f, and angle of view of the large-diameter zoom lens according to the third embodiment of the present invention are as shown in Table 5 below, and the example values are as shown in Table 6 below. .
【００２０】本発明の第４実施例に従う大口径ズームレ
ンズの絞り値Ｆ、焦点距離ｆ、画角は次の〈表７〉の通
り、実施例値は次の〈表８〉の通りである。 The aperture value F, the focal length f, and the angle of view of the large-diameter zoom lens according to the fourth embodiment of the present invention are as shown in Table 7 below, and the example values are as shown in Table 8 below. .
【００２１】本発明の第５実施例に従う大口径ズームレ
ンズの絞り値Ｆ、焦点距離ｆ、画角は次の〈表９〉の通
り、実施例値は次の〈表１０〉の通りである。 The aperture value F, the focal length f, and the angle of view of the large-diameter zoom lens according to the fifth embodiment of the present invention are as shown in Table 9 below, and the example values are as shown in Table 10 below. .
【００２２】[0022]
【発明の効果】以上に、本発明の実施例に従ってコンパ
クト形カメラにおいて、広角端から望遠端までの収差特
性が良好であり、量産性が優秀な高倍率ズームレンズが
提供できる。As described above, according to the embodiments of the present invention, it is possible to provide a high-power zoom lens which is excellent in mass productivity and has a good aberration characteristic from the wide-angle end to the telephoto end in a compact camera.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の第１実施例に従う高倍率ズームレンズ
の構成図で、Ａは広角位置を、Ｂは中間位置を、Ｃは望
遠位置をそれぞれ示す。FIG. 1 is a configuration diagram of a high-power zoom lens according to a first embodiment of the present invention, in which A indicates a wide-angle position, B indicates an intermediate position, and C indicates a telephoto position.
【図２】本発明の第１実施例に従う高倍率ズームレンズ
の広角位置での収差図である。FIG. 2 is an aberration diagram at a wide-angle position of the high-power zoom lens according to the first example of the present invention.
【図３】本発明の第１実施例に従う高倍率ズームレンズ
の中間位置での収差図である。FIG. 3 is an aberration diagram at a middle position of the high-power zoom lens according to Example 1 of the present invention.
【図４】本発明の第１実施例に従う高倍率ズームレンズ
の望遠位置での収差図である。FIG. 4 is an aberration diagram at a telephoto position of the high-power zoom lens according to the first example of the present invention.
【図５】本発明の第２実施例に従う高倍率ズームレンズ
の構成図で、Ａは広角位置を、Ｂは中間位置を、Ｃは望
遠位置をそれぞれ示す。5A and 5B are configuration diagrams of a high-power zoom lens according to a second embodiment of the present invention, in which A indicates a wide-angle position, B indicates an intermediate position, and C indicates a telephoto position.
【図６】本発明の第２実施例に従う高倍率ズームレンズ
の広角位置での収差図である。FIG. 6 is an aberration diagram at a wide-angle position of a high-power zoom lens according to Example 2 of the present invention.
【図７】本発明の第２実施例に従う高倍率ズームレンズ
の中間位置での収差図である。FIG. 7 is an aberration diagram at a middle position of the high-power zoom lens according to the second example of the present invention.
【図８】本発明の第２実施例に従う高倍率ズームレンズ
の望遠位置での収差図である。FIG. 8 is an aberration diagram at a telephoto position of a high-power zoom lens according to Example 2 of the present invention.
【図９】本発明の第３実施例に従う高倍率ズームレンズ
の構成図で、Ａは広角位置を、Ｂは中間位置を、Ｃは望
遠位置を示す。FIG. 9 is a configuration diagram of a high-power zoom lens according to a third embodiment of the present invention, in which A indicates a wide-angle position, B indicates an intermediate position, and C indicates a telephoto position.
【図１０】本発明の第３実施例に従う高倍率ズームレン
ズの広角位置での収差図である。FIG. 10 is an aberration diagram at a wide-angle position of a high-power zoom lens according to Example 3 of the present invention.
【図１１】本発明の第３実施例に従う高倍率ズームレン
ズの中間位置での収差図である。FIG. 11 is an aberration diagram at a middle position of the high-power zoom lens according to Example 3 of the present invention.
【図１２】本発明の第３実施例に従う高倍率ズームレン
ズの望遠位置での収差図である。FIG. 12 is an aberration diagram at a telephoto position of a high-power zoom lens according to Example 3 of the present invention.
【図１３】本発明の第４実施例に従う高倍率ズームレン
ズの構成図で、Ａは広角位置を、Ｂは中間位置を、Ｃは
望遠位置を示す。FIG. 13 is a configuration diagram of a high-power zoom lens according to Example 4 of the present invention, in which A indicates a wide-angle position, B indicates an intermediate position, and C indicates a telephoto position.
【図１４】本発明の第４実施例に従う高倍率ズームレン
ズの広角位置での収差図である。FIG. 14 is an aberration diagram at a wide-angle position of a high-power zoom lens according to Example 4 of the present invention.
【図１５】本発明の第４実施例に従う高倍率ズームレン
ズの中間位置での収差図である。FIG. 15 is an aberration diagram at a middle position of the high-power zoom lens according to Example 4 of the present invention.
【図１６】本発明の第４実施例に従う高倍率ズームレン
ズの望遠位置での収差図である。FIG. 16 is an aberration diagram at a telephoto position of a high-power zoom lens according to Example 4 of the present invention.
【図１７】本発明の第５実施例に従う高倍率ズームレン
ズの構成図で、Ａは広角位置を、Ｂは中間位置を、Ｃは
望遠位置を示す。FIG. 17 is a configuration diagram of a high-power zoom lens according to Example 5 of the present invention, in which A indicates a wide-angle position, B indicates an intermediate position, and C indicates a telephoto position.
【図１８】本発明の第５実施例に従う高倍率ズームレン
ズの広角位置での収差図である。FIG. 18 is an aberration diagram at a wide-angle position of a high-power zoom lens according to Example 5 of the present invention.
【図１９】本発明の第５実施例に従う高倍率ズームレン
ズの中間位置での収差図である。FIG. 19 is an aberration diagram at a middle position of the high-power zoom lens according to Example 5 of the present invention.
【図２０】本発明の第５実施例に従う高倍率ズームレン
ズの望遠位置での収差図である。FIG. 20 is an aberration diagram at a telephoto position of a high-power zoom lens according to Example 5 of the present invention.
Ｉ 第１レンズ群 II 第２レンズ群 III 第３レンズ群 １〜１１ 第１レンズ〜第１１レンズ I 1st lens group II 2nd lens group III 3rd lens group 1-11 1st lens-11th lens
Claims (3)
ら望遠端への変倍時に前記第１レンズ群と第２レンズ群
の間隙が変化され、同時に前記第２レンズ群と第３レン
ズ群の間隙が変化するように構成され、次の条件を満足
することを特徴とする高倍率ズームレンズ。 ３．５＜ｆT／ｆW ＬT／ｆT＜０．９５ −０．５＜ｆ1n／ｆT＜−０．１ ここに、 ｆT：望遠端での全体レンズ系の焦点距離 ｆW：広角端での全体レンズ系の焦点距離 ＬT：望遠端において、第１レンズ面から像面までの距
離 ｆ1n：第１レンズ群で負の屈折力を有するレンズの焦点
距離1. A wide-angle end comprising, in order from the object side, a first lens group having a positive refractive power, a second lens group having a positive refractive power, and a third lens group having a negative refractive power. From the telephoto end to the telephoto end, the gap between the first lens group and the second lens group is changed, and at the same time, the gap between the second lens group and the third lens group is changed, and the following conditions are satisfied. A high-power zoom lens that is characterized by 3.5 <Here f T / f W L T / f T <0.95 -0.5 <f 1n / f T <-0.1, f T: the focal length f of the entire lens system at the telephoto end W : focal length of the entire lens system at the wide-angle end L T : distance from the first lens surface to the image surface at the telephoto end f 1n : focal length of a lens having a negative refractive power in the first lens group
請求項１に記載の高倍率ズームレンズ。 １．５＜ｆII,IIIW ／ｆII,IIT＜３．６ ここに、 ｆII,IIIW ：広角端で第２レンズ群と第３レンズ群の合
成焦点距離 ｆII,IIT ：望遠端で第２レンズ群と第３レンズ群の合
成焦点距離2. The high-power zoom lens according to claim 1, further satisfying the following condition. 1.5 <f II, IIIW / f II, IIT <3.6 where f II, IIIW : composite focal length of the second lens unit and the third lens unit at the wide-angle end f II, IIT : first at the telephoto end Composite focal length of 2nd lens group and 3rd lens group
りが設けられることを特徴とする請求項２に記載の高倍
率ズームレンズ。3. The high-power zoom lens according to claim 2, wherein a diaphragm is provided between the second lens group and the third lens group.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR52834/1995 | 1995-12-20 | ||
| KR1019950052834A KR100382007B1 (en) | 1995-12-20 | 1995-12-20 | High magnification zoom lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09179028A true JPH09179028A (en) | 1997-07-11 |
Family
ID=19441947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8341693A Pending JPH09179028A (en) | 1995-12-20 | 1996-12-20 | High-power zoom lens |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH09179028A (en) |
| KR (1) | KR100382007B1 (en) |
| DE (1) | DE19653157A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6958866B2 (en) | 2001-06-08 | 2005-10-25 | Pentax Corporation | Zoom lens system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110673314B (en) * | 2019-09-29 | 2021-12-03 | 凯迈（洛阳）测控有限公司 | Negative compensation type large-target-surface medium-wave refrigeration infrared continuous zooming optical system |
| CN112859291B (en) * | 2021-02-01 | 2022-09-27 | 浙江舜宇光学有限公司 | Camera lens |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR920006751Y1 (en) * | 1989-12-16 | 1992-09-26 | 삼성전자 주식회사 | Color signal compensating circuit of vtr |
| JP2870098B2 (en) * | 1990-03-07 | 1999-03-10 | ミノルタ株式会社 | Compact zoom lens system |
| JP2915987B2 (en) * | 1990-10-30 | 1999-07-05 | 旭光学工業株式会社 | High-power zoom lens for compact cameras covering a wide angle |
| JPH0667093A (en) * | 1992-08-20 | 1994-03-11 | Minolta Camera Co Ltd | High-power zoom lens |
-
1995
- 1995-12-20 KR KR1019950052834A patent/KR100382007B1/en not_active IP Right Cessation
-
1996
- 1996-12-19 DE DE19653157A patent/DE19653157A1/en not_active Withdrawn
- 1996-12-20 JP JP8341693A patent/JPH09179028A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6958866B2 (en) | 2001-06-08 | 2005-10-25 | Pentax Corporation | Zoom lens system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19653157A1 (en) | 1997-06-26 |
| KR970048875A (en) | 1997-07-29 |
| KR100382007B1 (en) | 2003-08-21 |
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