KR960035080A - 프로젝터용 투영광학계 - Google Patents
프로젝터용 투영광학계 Download PDFInfo
- Publication number
- KR960035080A KR960035080A KR1019950005264A KR19950005264A KR960035080A KR 960035080 A KR960035080 A KR 960035080A KR 1019950005264 A KR1019950005264 A KR 1019950005264A KR 19950005264 A KR19950005264 A KR 19950005264A KR 960035080 A KR960035080 A KR 960035080A
- Authority
- KR
- South Korea
- Prior art keywords
- lens
- optical system
- lens unit
- projection optical
- focal length
- 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.)
- Granted
Links
Classifications
-
- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
Description
Claims (5)
- 결상면에서 먼 쪽부터 배치된 제1메니스커스렌즈, 제1오목렌즈, 제2메니스커스렌즈 및 볼록렌즈가 조합되어 양의 굴절력을 가지는 제1렌즈유니트와 상기 제1렌즈유니트에서 발생된 페쯔발 합(Petzval′s sum)과 색수차를 보정하도록 음의 굴절력을 가지는 제2렌즈유니트와 주광선이 결상면에 대하여 수직에 가깝게 입사하도록 상기 결상면을 향한 면의 곡률반경은 무한대이며, 상기 결상면에 반대되는 면은 볼록하게 형성된 2매의 평볼록렌즈로 된 제3렌즈유니트가 구비된 것을 특징으로 하는 프로젝터용 투영광학계.
- 제1항에 있어서, 상기 제1메니스커스렌즈의 광 입사쪽면 앞에 광학계를 통과하는 광선을 조절하는 조리개가 더 구비된 것을 특징으로하는 프로젝터용 투영광학계.
- 제1항에 있어서, 상기 제3렌즈유니트의 초점거리 fcon와 전체 공학계의 초점거리 f사이의 관계식 fcon<1.3f인 것을 특징으로 하는 프로젝터용 투영광학계.
- 제1항에 있어서, 상기 제3렌즈유니트를 이루는 두매의 렌즈는 그 곡률, 두께 및 재질이 동일한 동일렌즈인 것을 특징으로 하는 프로젝터의 투영광학계.
- 제4항에 있어서, 상기 제3렌즈유니트의 렌즈 굴절률 n4(d-lile 굴절률)이 관계식 n4<1.55을 만족하는 것을 특징으로 하는 프로젝터용 투영광학계.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950005264A KR0141164B1 (ko) | 1995-03-14 | 1995-03-14 | 프로젝터용 투영광학계 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950005264A KR0141164B1 (ko) | 1995-03-14 | 1995-03-14 | 프로젝터용 투영광학계 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960035080A true KR960035080A (ko) | 1996-10-24 |
KR0141164B1 KR0141164B1 (ko) | 1998-08-17 |
Family
ID=19409780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950005264A Expired - Fee Related KR0141164B1 (ko) | 1995-03-14 | 1995-03-14 | 프로젝터용 투영광학계 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0141164B1 (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101654723B1 (ko) * | 2009-02-26 | 2016-09-06 | 엘지전자 주식회사 | 휴대용 단말기 |
KR101016018B1 (ko) * | 2010-02-18 | 2011-02-23 | 주식회사 세코닉스 | 피코 프로젝터용 투사 렌즈 유닛 |
-
1995
- 1995-03-14 KR KR1019950005264A patent/KR0141164B1/ko not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR0141164B1 (ko) | 1998-08-17 |
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