KR950019806A - Telephoto optics using aspherical lens - Google Patents

Telephoto optics using aspherical lens Download PDF

Info

Publication number
KR950019806A
KR950019806A KR1019930029592A KR930029592A KR950019806A KR 950019806 A KR950019806 A KR 950019806A KR 1019930029592 A KR1019930029592 A KR 1019930029592A KR 930029592 A KR930029592 A KR 930029592A KR 950019806 A KR950019806 A KR 950019806A
Authority
KR
South Korea
Prior art keywords
lens
optical system
aspherical lens
predetermined angle
aspherical surface
Prior art date
Application number
KR1019930029592A
Other languages
Korean (ko)
Inventor
장요셉
Original Assignee
김광호
삼성전자 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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019930029592A priority Critical patent/KR950019806A/en
Publication of KR950019806A publication Critical patent/KR950019806A/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/02—Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/02—Diaphragms

Abstract

본 발명은 망원 광학계에 관한 것으로, 주로 스틸 카메라의 교환렌즈로 많이 사용되며, 그리고 비구면 렌즈로 구성되어, 수차 보정은 물론 경제적인 면에서도 많은 도움이 되는 비구면이 포함된 렌즈를 사용한 망원 광학계에 관한 것이다.BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a telephoto optical system, which is mainly used as an interchangeable lens of a still camera, and is composed of an aspherical lens, and relates to a telephoto optical system using an aspherical lens that is very helpful in terms of aberration correction and economics. will be.

특히, 비구면 렌즈를 사용한 망훤 렌즈 장치는 비구면 렌즈를 사용함으로써, 구면 수차등의 수차 보정 상태가 양호해 지고, 렌즈계가 보다 가벼워지는 동시에 그 전장이 짧아지는 효과가 있으며, 표2에 나타난 바와 같이 F/# 2.8인 비교적 밝은 렌즈를 화각이 24.4도로 크게 개선시킴으로써, 수차 보정이 우수하게 되는 효과가 있다.In particular, the aspherical lens device using an aspherical lens has an effect of correcting aberration correction conditions such as spherical aberration by using an aspherical lens, making the lens system lighter and shortening its overall length, as shown in Table 2. By greatly improving a relatively bright lens having a / # 2.8 angle of view of 24.4 degrees, the aberration correction is excellent.

Description

비구면 렌즈를 사용한 망원 광학계Telephoto optics using aspherical lens

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

제6도는 본 발명에 따른 망원 광학계의 렌즈 배치도.6 is a lens arrangement of the telephoto optical system according to the present invention.

Claims (4)

물체로부터 입사되는 빛을 소정의 각도로 수렴하는 제1렌즈와, 상기 제1렌즈로부터 소정의 거리 만큼 이격되고, 상기 제1렌즈로부터 입사되는 빛을 소정의 각도로 발산하는 제2렌즈와, 상기 제2렌즈로 부터 소정의 거리 만큼 이격 되고, 상기 제2렌즈로부터의 입사되는 빛을 소정의 각도로 수렴하는 제3렌즈와, 상기 제3렌즈로부터 소정의 거리 만큼 이격 되고, 상기 제3렌즈로부터의 빛을 선택적으로 통과시키는 조리개와, 상기 조리개로부터 소정의 거리 만큼 이격되고, 상기 조리개로부터 입사되는 빛을 소정의 각도로 발산하는 제4렌즈와, 상기 제4렌즈로부터 소정의 거리 만큼 이격되고, 상기 제4렌즈로부터의 빛을 소정의 각도로 수렴하며 적어도 일측에 형성된 비구면을 가지는 제5렌즈를 구비하여된 것을 특징으로 하는 망원 광학계.A first lens for converging light incident from an object at a predetermined angle, a second lens spaced apart from the first lens by a predetermined distance, and emitting a light incident from the first lens at a predetermined angle; A third lens spaced apart from the second lens by a predetermined distance, the third lens converging the incident light from the second lens at a predetermined angle, and a third distance spaced from the third lens, and separated from the third lens. An aperture for selectively passing light of the light source, a fourth lens spaced apart from the aperture by a predetermined distance, a fourth lens that emits light incident from the aperture at a predetermined angle, and a spaced apart from the fourth lens by a predetermined distance, And a fifth lens that converges the light from the fourth lens at a predetermined angle and has an aspherical surface formed on at least one side thereof. 제1항에 있어서, 광학계 전체의 초점 거리를 F, 뒤 초점 거리를 B, 라 할때,The method of claim 1, wherein when the focal length of the entire optical system is F, the rear focal length B, B/F0.2355B / F 0.2355 인 조건을 만족하는 것을 특징으로 하는 광학계.Optical system which satisfy | fills phosphorus condition. 제1항에 있어서, 상기 제5렌즈의 비구면이 물체의 위치에 대응하는 입사면에 형성되고, 이 비구면에서 기준 구면이 새그(sag)를 X0, 비구면에 의한 sag를 XA라 할 때, 이 비구면이The aspherical surface of claim 5, wherein the aspherical surface of the fifth lens is formed on the incident surface corresponding to the position of the object, and when the reference sphere is a sag of X 0 and sag of the aspherical surface is X A , This aspherical surface X0- XA〉 0X 0 -X A > 0 인 조건을 만족하는 것을 특징으로 하는 망원 광학계.The telephoto optical system which satisfy | fills the conditions which are phosphorus. 제1항에 있어서, 광학계의 첫 번째 렌즈면에서 마지막 렌즈면까지의 거리를 T, 광학계의 초점 거리를 F라 할 때,The method according to claim 1, wherein when the distance from the first lens surface to the last lens surface of the optical system is T and the focal length of the optical system is F, T/F0.7139T / F 0.7139 인 조건을 만족하는 것을 특징으로 하는 망원 광학계.The telephoto optical system which satisfy | fills the conditions which are phosphorus. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930029592A 1993-12-24 1993-12-24 Telephoto optics using aspherical lens KR950019806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930029592A KR950019806A (en) 1993-12-24 1993-12-24 Telephoto optics using aspherical lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930029592A KR950019806A (en) 1993-12-24 1993-12-24 Telephoto optics using aspherical lens

Publications (1)

Publication Number Publication Date
KR950019806A true KR950019806A (en) 1995-07-24

Family

ID=41170043

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930029592A KR950019806A (en) 1993-12-24 1993-12-24 Telephoto optics using aspherical lens

Country Status (1)

Country Link
KR (1) KR950019806A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009061153A2 (en) * 2007-11-08 2009-05-14 Microptics Co., Ltd. 5 pieces camera lens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009061153A2 (en) * 2007-11-08 2009-05-14 Microptics Co., Ltd. 5 pieces camera lens
WO2009061153A3 (en) * 2007-11-08 2009-07-02 Microptics Co Ltd 5 pieces camera lens

Similar Documents

Publication Publication Date Title
KR970075961A (en) Projection lens with large reverse focal length to focal length ratio
KR970075962A (en) Long focal length projection lens
KR987000587A (en) TELECENTRIC LENS SYSTEMS FOR FORMING AN IMAGE OF AN OBJECT COMPOSED OF PIXELS
US7274517B2 (en) Micromirror array lens with focal length gradient
ATA201699A (en) VISUAL AID
KR880006554A (en) Wide-Angle Lens Assembly with Improved Flat-Feed Properties
DE60126468D1 (en) Optical motor for SLM display systems with incident light screen or translucent screen
WO2003077007A3 (en) Objective lens consisting of crystal lenses
KR930018298A (en) Rear Projection Projection Lens Unit for TV
KR950019806A (en) Telephoto optics using aspherical lens
KR940010751A (en) Projection Lens System for Rear Reflective Television
ATE383591T1 (en) MICROSCOPE WITH COLOR ERROR-REDUCING COLLIMATOR
ATE212732T1 (en) OPTICAL IMAGING SYSTEM AND GRAPHIC USER INTERFACE
KR960705245A (en) Wide angle objective system
KR970022570A (en) Projection optics and exposure apparatus
KR950019808A (en) Rear Cone Telescopes, Rear Convergence Lenses and Telescopes
ATE12843T1 (en) MULTIPLE MAGNIFICATION OPTICAL SYSTEM.
KR950019805A (en) Telephoto optics using aspherical lens
SE8103984L (en) IMAGE STABILIZED OPTICAL INSTRUMENT
KR890010587A (en) Zoom lens
KR860002024A (en) Two-way simultaneous observation device for penetrating object
KR970066628A (en) Optical system using aspheric lens
KR950019804A (en) Optical system using aspherical lens
US1728993A (en) Adjoint piece for telescope sights
WO2003075097A3 (en) Refractive projection lens with a middle part

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
WITB Written withdrawal of application