KR950019805A - Telephoto optics using aspherical lens - Google Patents

Telephoto optics using aspherical lens Download PDF

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Publication number
KR950019805A
KR950019805A KR1019930029591A KR930029591A KR950019805A KR 950019805 A KR950019805 A KR 950019805A KR 1019930029591 A KR1019930029591 A KR 1019930029591A KR 930029591 A KR930029591 A KR 930029591A KR 950019805 A KR950019805 A KR 950019805A
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KR
South Korea
Prior art keywords
lens
optical system
telephoto
spaced apart
aperture
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.)
Withdrawn
Application number
KR1019930029591A
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Korean (ko)
Inventor
양진오
Original Assignee
김광호
삼성전자 주식회사
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Priority to KR1019930029591A priority Critical patent/KR950019805A/en
Publication of KR950019805A publication Critical patent/KR950019805A/en
Withdrawn legal-status Critical Current

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Abstract

본 발명은 망원 광학계에 관한 것으로, 특히 크기가 작고 가벼우며 촬영이 편리한 카메라의 교환 렌즈에 많이 사용되며, 수차 보정 및 경제적인 면에서도 많은 학계에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to telephoto optics, and is particularly used for interchangeable lenses of cameras that are small in size, light in weight, and easy to shoot, and are related to many academia in terms of aberration correction and economics.

특히 본 발명에 따른 카메라용 망원 광학계는 비구면이 포함된 렌즈를 사용함으로써, 구면 수차, 상면 만곡, 왜곡등의 수차 보정 상태가 양호해지고, 광학계의 전장이 보다 짧아지는 동시에 가벼워지며, F/#를 4.8에서 3.8로 개선시킴으로써, 비교적 밝은 광학계가 실현되는 효과가 있다.In particular, the telephoto optical system for a camera according to the present invention uses a lens containing an aspherical surface, so that aberration correction conditions such as spherical aberration, image curvature, and distortion are improved, and the overall length of the optical system is shorter and lighter, and F / # is reduced. By improving from 4.8 to 3.8, there is an effect that a relatively bright optical system is realized.

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 빛을 선택적으로 통과시키는 조리개와, 상기 조리개로부터 소정의 거리 만큼 이격되고, 상기 조리개로부터 입사되는 빛을 소정의 각도로 발산하는 제3렌즈와, 상기 제3렌즈로부터 소정의 거리 만큼 이격되고, 상기 제3렌즈로부터의 빛을 소정의 각도로 수렴하는 적어도 일측에 형성된 비구면을 가지는 제4렌즈를 구비하여 된 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; An aperture spaced apart from the second lens by a predetermined distance and selectively passing light from the second lens; an aperture spaced apart from the aperture by a predetermined distance, and emitting light incident from the aperture at a predetermined angle. And a fourth lens, the fourth lens having an aspherical surface formed on at least one side spaced apart from the third lens by a predetermined distance and converging light from the third lens at a predetermined angle. Optical system. 제1항에 있어서, 광학계 전체의 초점의 거리률 F, 뒤 초점 거리를 B라 할때,The method according to claim 1, wherein the distance ratio F of the focal point of the entire optical system and the rear focal length B are: B/F0.4364B / F 0.4364 인 조건을 만족하는 것을 특징으로 하는 망원 광학계.The telephoto optical system which satisfy | fills the conditions which are phosphorus. 제1항에 있어서, 상기 제4렌즈의 비구면이 상의 위치에 대응하는 출사면에 형성되고, 이 비구면에서 기준 구면의 새그(sag)를 X0비구면에 의한 sag를 XA라 할 때, 이 비구면이According to claim 1, formed on the emitting surface corresponding to the position on the aspherical surface of the fourth lens, and when referred to sag by a sag (sag) of the reference sphere on the X 0 aspheric surface in the aspherical X A, it is an aspherical surface this 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/F0.5044T / F 0.5044 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.
KR1019930029591A 1993-12-24 1993-12-24 Telephoto optics using aspherical lens Withdrawn KR950019805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930029591A KR950019805A (en) 1993-12-24 1993-12-24 Telephoto optics using aspherical lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930029591A KR950019805A (en) 1993-12-24 1993-12-24 Telephoto optics using aspherical lens

Publications (1)

Publication Number Publication Date
KR950019805A true KR950019805A (en) 1995-07-24

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KR1019930029591A Withdrawn KR950019805A (en) 1993-12-24 1993-12-24 Telephoto optics using aspherical lens

Country Status (1)

Country Link
KR (1) KR950019805A (en)

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PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19931224

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Patent event code: PA02012R01D

Patent event date: 19941231

Comment text: Request for Examination of Application

Patent event code: PA02011R01I

Patent event date: 19931224

Comment text: Patent Application

PG1501 Laying open of application
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Patent event date: 19980126

Patent event code: PE09021S01D

PC1202 Submission of document of withdrawal before decision of registration

Comment text: [Withdrawal of Procedure relating to Patent, etc.] Withdrawal (Abandonment)

Patent event code: PC12021R01D

Patent event date: 19980312

WITB Written withdrawal of application