KR950001334A - 프로젝터 - Google Patents
프로젝터 Download PDFInfo
- Publication number
- KR950001334A KR950001334A KR1019940014167A KR19940014167A KR950001334A KR 950001334 A KR950001334 A KR 950001334A KR 1019940014167 A KR1019940014167 A KR 1019940014167A KR 19940014167 A KR19940014167 A KR 19940014167A KR 950001334 A KR950001334 A KR 950001334A
- Authority
- KR
- South Korea
- Prior art keywords
- light
- focal point
- parallel rays
- parabolic
- ellipsoid
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
- G02B17/0804—Catadioptric systems using two curved mirrors
- G02B17/0816—Catadioptric systems using two curved mirrors off-axis or unobscured systems in which not all of the mirrors share a common axis of rotational symmetry, e.g. at least one of the mirrors is warped, tilted or decentered with respect to the other elements
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- 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
- G03B21/10—Projectors with built-in or built-on screen
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
- H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
- H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells
Abstract
프로젝터는 광밸브에서 스크린까지의 단축된 광학 경로와 시스템의 깊이의 길이를 줄이고 설치하는데 작은 공간을 필요로 한다. 광밸브에서 발생한 광선은 수렴 렌즈에 의해 굴절되고 타원경의 주촛점에서 수렴하는 평면경에 의해 반사되고 포물경의 촛점이기도 하고 투사렌즈가 위치한 부촛점으로 진행한다. 투사렌즈를 통과한 광선은 포물경에 의해 반사되고 편두형 렌즈 스크린위에 마지막으로 화상을 형성하기 위해 프레넬 렌즈에 의해 모아진 평행광선을 보낸다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 4 도는 본 발명에서 실시된 프로젝터를 설명하는 구조도, 제 5 도는 제 4 도와 유사한 프로젝터의 다른 예를 도시한 도면, 제 6 도는 본 발명에서 실시된 다른 프로젝터의 구조도.
Claims (6)
- 주촛점과 부촛점이 있는 타원경, 광학 시스템을 통하여 타원경의 주촛점에 광선이 수렴하도록 하기 위해 광선을 발생하는 광밸브, 타원경의 부촛점에 위치한 투사렌즈, 평행 광선을 생성하기 위해 타원경의 부촛점에 촛점이 있는 포물경을 포함하여, 포물경에 의해 반사된 평행광선이 화상을 형성하기 위해 모이는 것을 특징으로 하는 프로젝터.
- 제 1 항에 있어서, 광원과 광선분할기를 더 포함하고, 반사형 액정 디스플레이를 광밸브로서 사용한 것을 특징으로 하는 프로젝터.
- 평행광선을 발생하는 광밸브, 평행광선이 그 촛점에 수렴하도록 하는 제 1 포물경, 제 1 포물경의 촛점에 의치한 투사렌즈, 평행 광선을 생성하기 위해 투사렌즈로 부터의 광선을 반사하는 제 2 포물경을 포함하여, 제 2 포물경에 의해 반사된 평행광선이 화상을 형성하기 위해 모이는 것을 특징으로 하는 프로젝터.
- 제 3항에 있어서, 광원과 광선분할기를 더 포함하고 반사형 액정 디스플레이를 광밸브로서 사용하는 것을 특징으로 하는 프로젝터.
- 평행광선을 발생하는 광밸브, 평행광선이 그 촛점에 수렴하도록 하는 포물경, 포물경의 촛점에 위치한 투사렌즈, 타원경의 주촛점과 포물경의 주촛점이 공존하고 상기 광선이 그 부촛점에 수렴할 수 있도록 투사렌즈로부터 광선을 반사하는 타원경을 포함하여, 타원경에 의해 반사된 평행광선이 화상을 형성하기 위해 모이는 것을 특징으로 하는 프로젝터.
- 제 5 항에 있어서, 광원과 광선분할기를 더 포함하고 반사형 액정 디스플레이를 광밸브로서 사용하는 것을 특징으로 하는 프로젝터.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980009939A KR0157209B1 (en) | 1993-06-23 | 1998-03-23 | Projector |
KR1019980009938A KR0157208B1 (en) | 1993-06-23 | 1998-03-23 | Projector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP93-151893 | 1993-06-23 | ||
JP5151893A JP2786796B2 (ja) | 1993-06-23 | 1993-06-23 | プロジェクター |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950001334A true KR950001334A (ko) | 1995-01-03 |
KR0157083B1 KR0157083B1 (ko) | 1999-03-30 |
Family
ID=15528505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940014167A KR0157083B1 (ko) | 1993-06-23 | 1994-06-22 | 프로젝터 |
Country Status (6)
Country | Link |
---|---|
US (3) | US5477394A (ko) |
EP (1) | EP0633491B1 (ko) |
JP (1) | JP2786796B2 (ko) |
KR (1) | KR0157083B1 (ko) |
CA (1) | CA2124466C (ko) |
DE (1) | DE69415595T2 (ko) |
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JP2756514B2 (ja) * | 1988-12-09 | 1998-05-25 | ホシデン・フィリップス・ディスプレイ株式会社 | プロジェクション装置 |
JPH0733692B2 (ja) * | 1990-06-04 | 1995-04-12 | 隆次郎 春日岡 | 建造物用ユニットパネル |
JPH0562877A (ja) * | 1991-09-02 | 1993-03-12 | Yasuko Shinohara | 光によるlsi製造縮小投影露光装置の光学系 |
US5287218A (en) * | 1992-04-07 | 1994-02-15 | Hughes Aircraft Company | Re-imaging optical system including refractive and diffractive optical elements |
JPH06235883A (ja) * | 1993-02-10 | 1994-08-23 | Sony Corp | 映像プロジェクタ装置 |
-
1993
- 1993-06-23 JP JP5151893A patent/JP2786796B2/ja not_active Expired - Fee Related
-
1994
- 1994-05-03 CA CA002124466A patent/CA2124466C/en not_active Expired - Fee Related
- 1994-05-19 US US08/245,899 patent/US5477394A/en not_active Expired - Lifetime
- 1994-06-22 KR KR1019940014167A patent/KR0157083B1/ko not_active IP Right Cessation
- 1994-06-22 DE DE69415595T patent/DE69415595T2/de not_active Expired - Fee Related
- 1994-06-22 EP EP94109648A patent/EP0633491B1/en not_active Expired - Lifetime
-
1995
- 1995-04-17 US US08/422,938 patent/US5495306A/en not_active Expired - Lifetime
- 1995-04-17 US US08/422,934 patent/US5499067A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5499067A (en) | 1996-03-12 |
CA2124466A1 (en) | 1994-12-24 |
DE69415595D1 (de) | 1999-02-11 |
KR0157083B1 (ko) | 1999-03-30 |
JPH0713157A (ja) | 1995-01-17 |
EP0633491B1 (en) | 1998-12-30 |
JP2786796B2 (ja) | 1998-08-13 |
DE69415595T2 (de) | 1999-07-15 |
CA2124466C (en) | 1998-09-01 |
US5477394A (en) | 1995-12-19 |
US5495306A (en) | 1996-02-27 |
EP0633491A1 (en) | 1995-01-11 |
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