KR940027500A - Zoom lens for video camera - Google Patents

Zoom lens for video camera Download PDF

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Publication number
KR940027500A
KR940027500A KR1019930007666A KR930007666A KR940027500A KR 940027500 A KR940027500 A KR 940027500A KR 1019930007666 A KR1019930007666 A KR 1019930007666A KR 930007666 A KR930007666 A KR 930007666A KR 940027500 A KR940027500 A KR 940027500A
Authority
KR
South Korea
Prior art keywords
lens
lenses
zoom lens
light
focal lengths
Prior art date
Application number
KR1019930007666A
Other languages
Korean (ko)
Other versions
KR0122742B1 (en
Inventor
채찬영
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019930007666A priority Critical patent/KR0122742B1/en
Publication of KR940027500A publication Critical patent/KR940027500A/en
Application granted granted Critical
Publication of KR0122742B1 publication Critical patent/KR0122742B1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • 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
    • G02B15/142—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 two groups only
    • 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
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0046—Movement of one or more optical elements for zooming

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

Abstract

본 발명은 비디오 카메라용의 고배율, 초광각 실현이 가능한 줌 렌즈에 관한 것이다.The present invention relates to a zoom lens capable of realizing high magnification and ultra wide angle for a video camera.

본 발명의 줌 렌즈는 고정 렌즈군(1),(2) 및 (3)과, 변배 렌즈군(4),(5) 및 (6)과, 비구면 렌즈(8) 및 (10)과, 촛점 및 보정 렌즈군(10),(11) 및 (12)으로 구성되며, 상기 렌즈(1),(2) 및 (3)의 촛점 거리를 f1, 상기 렌즈(4),(5) 및 (6)의 촛점 거리를 f2, 상기 렌즈(8) 및 (9)의 촛점 거리를 f3, 상기 렌즈(9),(10) 및 (11)의 촛점 거리를 f4라고 했을 때,The zoom lens of the present invention is fixed lens group (1), (2) and (3), variable lens group (4), (5) and (6), aspherical lens (8) and (10), and focus And correction lens groups 10, 11, and 12, and the focal lengths of the lenses 1 , 2, and 3 are f 1 , the lenses 4, 5, and ( When the focal length of 6) is f 2 , the focal lengths of the lenses 8 and 9 are f 3 , and the focal lengths of the lenses 9, 10 and 11 are f 4 ,

의 조건을 만족한다. 또한 광각단에서의 촛점 거리를 f4라 할때,의 조건을 만족한다. Satisfies the conditions. Also, when the focal length at the wide end is f 4 , Satisfies the conditions.

본 발명에 따라 구성된 줌 렌즈는 광각 촛점 거리를 단축시키며, 협소한 공간에서도 매우 넓은 범위의 촬영이 가능하다.The zoom lens constructed in accordance with the present invention shortens the wide-angle focal length and enables a very wide range of imaging even in a narrow space.

Description

비디오 카메라용 줌 렌즈Zoom lens for video camera

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 렌즈의 구성도, 제2도는 제1도에 도시된 렌즈 구성의 실시예.1 is a configuration diagram of a lens according to the present invention, and FIG. 2 is an embodiment of the lens configuration shown in FIG.

Claims (2)

외부로부터 입사하는 광량을 결정하는 고정 렌즈군(1),(2) 및 (3)과; 일정 범위내에서 이동하며 상기 고정 렌즈군을 통과한 광에 대하여 변배 작용을 행하는 변배 렌즈군(4),(5) 및 (6)과; 상기 변배 렌즈군 및 광학 저역 필터(13)를 통과한 광중의 적절한 광량이 입사하도록 조절하는 조리개(7)와; 상기 적당한 광량의 광을 전달하는 비구면 렌즈(8 및 10)와; 상기 비구면 렌즈를 통과하여 촬상 소자(14)에 촬상되는 광에 대하여 촛점 작용과 보정 작용을 수행하는 촛점 및 보정 렌즈군(10),(11) 및 (12)으로 구성되며, 상기 비구면 렌즈(8),(10)와 렌즈(9),(11),(12)는 결상 렌즈군으로 작용하며, f1: 상기렌즈(1),(2) 및 (3)의 촛점 거리, f2: 상기 렌즈(4),(5) 및 (6)의 촛점 거리, f3: 상기 렌즈(7) 및 (8)의 촛점 거리, f4: 상기 렌즈 (9),(10) 및 (11)의 촛점 거리일때,Fixed lens groups (1), (2) and (3) for determining the amount of light incident from the outside; Shift lens groups (4), (5) and (6) which move within a certain range and perform a shift action on light passing through the fixed lens group; An aperture (7) for adjusting an appropriate amount of light in the light passing through the variable lens group and the optical low pass filter (13); Aspherical lenses (8 and 10) for delivering the appropriate amount of light; It consists of a group of focusing and correcting lenses 10, 11, and 12 that perform a focusing and correcting action on the light that passes through the aspherical lens and is captured by the imaging element 14, and the aspheric lens 8 ), 10 and the lens 9, 11, 12 acts as a focusing lens group, f 1: focal length of the lens (1), (2) and (3), f 2: the Focal lengths of lenses 4, 5 and 6, f 3 : Focal lengths of lenses 7 and 8, f 4 Focal lengths of lenses 9, 10 and 11 At distance, 의 조건을 만족하는 것을 특징으로 하는 줌 렌즈.A zoom lens, which satisfies the condition of. 제1항에 있어서,The method of claim 1, (f4: 광각단에서의 촛점 거리) (f 4 : focal length from wide-angle end) 의 조건을 만족하는 것을 특징으로 하는 줌 렌즈.A zoom lens, which satisfies the condition of. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019930007666A 1993-05-04 1993-05-04 Zoom lens for video camera KR0122742B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930007666A KR0122742B1 (en) 1993-05-04 1993-05-04 Zoom lens for video camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930007666A KR0122742B1 (en) 1993-05-04 1993-05-04 Zoom lens for video camera

Publications (2)

Publication Number Publication Date
KR940027500A true KR940027500A (en) 1994-12-10
KR0122742B1 KR0122742B1 (en) 1997-11-17

Family

ID=19354938

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930007666A KR0122742B1 (en) 1993-05-04 1993-05-04 Zoom lens for video camera

Country Status (1)

Country Link
KR (1) KR0122742B1 (en)

Also Published As

Publication number Publication date
KR0122742B1 (en) 1997-11-17

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