KR930006497A - Projector with keystone correction - Google Patents

Projector with keystone correction Download PDF

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Publication number
KR930006497A
KR930006497A KR1019910016928A KR910016928A KR930006497A KR 930006497 A KR930006497 A KR 930006497A KR 1019910016928 A KR1019910016928 A KR 1019910016928A KR 910016928 A KR910016928 A KR 910016928A KR 930006497 A KR930006497 A KR 930006497A
Authority
KR
South Korea
Prior art keywords
projector
parallel
object portion
image
light
Prior art date
Application number
KR1019910016928A
Other languages
Korean (ko)
Inventor
권순형
Original Assignee
이헌조
주식회사 금성사
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 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019910016928A priority Critical patent/KR930006497A/en
Priority to JP3346668A priority patent/JPH04296737A/en
Priority to US07/815,115 priority patent/US5283602A/en
Priority to DE4143221A priority patent/DE4143221C2/en
Publication of KR930006497A publication Critical patent/KR930006497A/en

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Abstract

본 발명은 투사기의 상하향 투사시 스크린영상에 나타나는 키스톤 현상을 보정하는 기술에 관한 것이다. 물체부와 결상렌즈부사이에 빛의 방향을 전환하는 기능을 갖는 미러가 평행이동 캐리어에 착설되어 물체부에 대해 평행이동 된다.The present invention relates to a technique for correcting the keystone phenomenon appearing on the screen image when the projector is projected up and down. A mirror having a function of changing the direction of light between the object portion and the image forming lens portion is mounted on the parallel carrier to move in parallel with the object portion.

특히, 본 발명은 3-판넬형 LCD 투사기에 적용된다.In particular, the present invention is applied to a three-panel LCD projector.

Description

키스톤 보정장치를 갖는 투사기Projector with keystone correction

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

제1도는 투사기의 광학RP와 스크린영상을 보인 설명도.1 is an explanatory diagram showing the optical RP and the screen image of the projector.

제2도는 투사기의 상향투사시 나타나는 키스톤현상을 설명하는 제1도 유사한 설명도.FIG. 2 is an explanatory diagram similar to FIG. 1 for explaining a keystone phenomenon appearing when the projector is projected upward.

제3도는 키스톤 현상을 보정하는 방법의 한 예를 보인 제1도와 유사한 설명도.FIG. 3 is an explanatory diagram similar to FIG. 1 showing an example of a method of correcting a keystone phenomenon. FIG.

Claims (2)

광원으로부터 발생된 빛이 전기적 영상신호가 가하여지는 물체부에 의하여 투과되거나 반사되어 빛의 영상정보가 결상렌즈부를 통하여 스크린에 상을 맺도록 한 투사기에 있어서, 물체부와 결상렌즈부사이에 빛의 방향을 전환하는 기능을 갖는 미러를 평행이동 캐리어에 착설하여 물체부에 대하여 평행이동시켜 키스톤이 보정된 화상을 임의의 투사높이에 투사할 수 있도록함을 특징으로 하는 키스톤 보정장치를 갖는 투사기.In a projector in which light generated from a light source is transmitted or reflected by an object part to which an electric image signal is applied, so that image information of light forms an image on a screen through an image forming lens part, wherein a direction of light is provided between the object part and the image forming lens part. And a mirror having a function of switching a to a parallel moving carrier so that the keystone-corrected image can be projected at an arbitrary projection height by moving in parallel to the object portion. 제1항에 있어서, 투사기가 청색, 녹색, 적색의 영상정보를 갖는 물체부와 이 물체부의 각 영상정보가 합성되는 걸상렌즈부로 구성되는 3127판넬형 LCD 투사기이고, 물체부와 결상렌즈부에 배설되어 각 물체부에 대하여 최소한 하나씩 방향전환기능을 갖는 미러를 물체부에 대하여 평행이동 시키는 평행이동 캐리어에 착설함을 특징으로 하는 투사기.The LCD projector according to claim 1, wherein the projector is a 3127 panel type LCD projector comprising an object portion having blue, green and red image information and a stool lens portion in which the image information of the object portion is synthesized. And a mirror having at least one redirection function for each object portion mounted on a parallel carrier for parallel movement with respect to the object portion. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910016928A 1990-12-29 1991-09-27 Projector with keystone correction KR930006497A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019910016928A KR930006497A (en) 1991-09-27 1991-09-27 Projector with keystone correction
JP3346668A JPH04296737A (en) 1990-12-29 1991-12-27 Optical system for projector
US07/815,115 US5283602A (en) 1990-12-29 1991-12-27 Optical system for projector
DE4143221A DE4143221C2 (en) 1990-12-29 1991-12-30 Optical system for a projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910016928A KR930006497A (en) 1991-09-27 1991-09-27 Projector with keystone correction

Publications (1)

Publication Number Publication Date
KR930006497A true KR930006497A (en) 1993-04-21

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ID=67433260

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910016928A KR930006497A (en) 1990-12-29 1991-09-27 Projector with keystone correction

Country Status (1)

Country Link
KR (1) KR930006497A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100333970B1 (en) * 1999-08-31 2002-04-24 구자홍 Projective Display Apparatus With Function Of Eliminating Keystone
KR100466104B1 (en) * 1997-02-05 2005-04-20 주식회사 엘지이아이 LCD Projector and Keystone Correction System Used in It

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100466104B1 (en) * 1997-02-05 2005-04-20 주식회사 엘지이아이 LCD Projector and Keystone Correction System Used in It
KR100333970B1 (en) * 1999-08-31 2002-04-24 구자홍 Projective Display Apparatus With Function Of Eliminating Keystone

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