KR950016248A - Macro adapter lens for video camera - Google Patents

Macro adapter lens for video camera Download PDF

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Publication number
KR950016248A
KR950016248A KR1019930025944A KR930025944A KR950016248A KR 950016248 A KR950016248 A KR 950016248A KR 1019930025944 A KR1019930025944 A KR 1019930025944A KR 930025944 A KR930025944 A KR 930025944A KR 950016248 A KR950016248 A KR 950016248A
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KR
South Korea
Prior art keywords
lens
curvature radius
video camera
adapter
adapter lens
Prior art date
Application number
KR1019930025944A
Other languages
Korean (ko)
Other versions
KR970006552B1 (en
Inventor
김후식
Original Assignee
이대원
삼성항공산업 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.)
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Publication date
Application filed by 이대원, 삼성항공산업 주식회사 filed Critical 이대원
Priority to KR1019930025944A priority Critical patent/KR970006552B1/en
Publication of KR950016248A publication Critical patent/KR950016248A/en
Application granted granted Critical
Publication of KR970006552B1 publication Critical patent/KR970006552B1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0087—Simple or compound lenses with index gradient
    • 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
    • G03B17/56—Accessories
    • G03B17/565—Optical accessories, e.g. converters for close-up photography, tele-convertors, wide-angle convertors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B2003/0093—Simple or compound lenses characterised by the shape

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

Abstract

비디오 카메라의 근접촬영을 위한 접사 어댑터렌즈가 개시되었다. 어댑터렌즈는 좌측곡률반경이 우측곡률반경보다 작은 제1렌즈 및 좌측곡률반경이 상기 제1렌즈의 상기 우측곡률반경과 동일하고 우측곡률반경은 상기 좌측곡률반경보다 소정배수 큰 제2렌즈를 구비하여, 비디오 카메라의 렌즈장치의 전면에 부착되어 원래의 렌즈가 갖는 수차특성을 약화시킴이 없이 우수한 화질을 제공하다. 또한, 본 발명의 어댑터렌즈는 여러가지 줌 위치에 대해 색수차의 발생을 최소화하도록 최적화설계되었다.A macro-adapter lens for close-up photography of a video camera has been disclosed. The adapter lens includes a first lens having a left curvature radius smaller than the right curvature radius, and a second lens having a left curvature radius equal to the right curvature radius of the first lens and a right curvature radius predetermined times larger than the left curvature radius. It is attached to the front of the lens device of the video camera to provide excellent image quality without attenuating the aberration characteristic of the original lens. In addition, the adapter lens of the present invention has been optimized to minimize the occurrence of chromatic aberration for various zoom positions.

Description

비디오 카메라용 접사 어댑터 렌즈Macro adapter lens for video camera

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

제3도는 어댑터 렌즈(Adapter lens)결착한 종래의 비디오 카메라의 렌즈장치의 개략도.3 is a schematic diagram of a lens apparatus of a conventional video camera having an adapter lens attached thereto.

제4도는 양의 버전스(positive vergence)를 갖는 어댑터 렌즈를 결합한 경우의 빛의 경로를 나타내는 개략도.4 is a schematic diagram showing a path of light when combining an adapter lens having positive vergence.

제5도는 본 발명에 의한 어댑터 렌즈의 단면도.5 is a cross-sectional view of the adapter lens according to the present invention.

제6도는 제5도에 도시된 본 발명에 의한 어댑터 렌즈를 결합한 비디오 카메라용 렌즈장치를 도시한다.6 shows a lens device for a video camera incorporating an adapter lens according to the present invention shown in FIG.

Claims (5)

비디오 카메라용 접사 어댑터 렌즈에 있어서, 좌측곡률반경이 우측곡률반경보다 작은 제1렌즈; 및 좌측곡률반경이 상기 제1렌즈의 상기 우측곡률반경과 동일하고 우측곡률반경은 상기 좌측곡률반경보다 소정배수 큰 제2렌즈를 구비한 것을 특징으로 하는 어댑터 렌즈.A macro-adapter lens for a video camera, comprising: a first lens having a left curvature radius smaller than a right curvature radius; And a second lens having a left curvature radius equal to the right curvature radius of the first lens and a right curvature radius being a predetermined multiple of the left curvature radius. 상기 제1항에 있어서, 상기 제2렌즈의 굴절률은 상기 제1렌즈의 굴절률보다 크고, 상기 제2렌즈의 분산율은 상기 제1렌즈의 분산율보다 3배정도 큰 것을 특징으로 하는 어댑터 렌즈.The adapter lens of claim 1, wherein the refractive index of the second lens is greater than the refractive index of the first lens, and the dispersion ratio of the second lens is about three times larger than the dispersion ratio of the first lens. 좌측곡률반경이 우측곡률반경보다 작은 제1렌즈, 및 좌측곡률반경이 상기 제1렌즈의 상기 우측곡률반경과 동일하고 우측곡률반경은 상기 촤측곡률반경보다 소정배수 큰 제2렌즈로 구성되어, 복수의 렌즈의 조합으로 구성된 비디오 카메라의 렌즈장치의 전면에 부착되는 것을 특징으로 하는 어댑터 렌즈.A first lens having a left curvature radius smaller than a right curvature radius, and a second lens having a left curvature radius equal to the right curvature radius of the first lens and having a right curvature radius larger than the left side curvature radius by a predetermined multiple. Adapter lens, characterized in that attached to the front of the lens unit of the video camera consisting of a combination of the lens. 상기 제3항에 있어서, 상기 제2렌즈의 굴절률은 상기 제1렌즈의 굴절률보다 크고, 상기 제2렌즈의 분산율은 상기 제1렌즈의 분산율보다 3배정도 큰 것을 특징으로 하는 어댑터 렌즈.The adapter lens of claim 3, wherein the refractive index of the second lens is greater than the refractive index of the first lens, and the dispersion ratio of the second lens is about three times larger than the dispersion ratio of the first lens. 상기 제3항에 있어서, 상기 렌즈장치의 앞단과 결합되도록 외주면에 나선형의 홈을 형성된 것을 특징으로 하는 어댑터 렌즈.The adapter lens of claim 3, wherein a spiral groove is formed on an outer circumferential surface of the lens unit so as to be coupled to the front end of the lens device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930025944A 1993-11-30 1993-11-30 Close-photograph adapter lens for video camera KR970006552B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930025944A KR970006552B1 (en) 1993-11-30 1993-11-30 Close-photograph adapter lens for video camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930025944A KR970006552B1 (en) 1993-11-30 1993-11-30 Close-photograph adapter lens for video camera

Publications (2)

Publication Number Publication Date
KR950016248A true KR950016248A (en) 1995-06-17
KR970006552B1 KR970006552B1 (en) 1997-04-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930025944A KR970006552B1 (en) 1993-11-30 1993-11-30 Close-photograph adapter lens for video camera

Country Status (1)

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Publication number Publication date
KR970006552B1 (en) 1997-04-29

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