KR930008485A

KR930008485A - Reflective projection method of head projection projector and apparatus thereof

Info

Publication number: KR930008485A
Application number: KR1019910019187A
Authority: KR
Inventors: 정진호
Original assignee: 정몽헌; 현대전자산업 주식회사
Priority date: 1991-10-30
Filing date: 1991-10-30
Publication date: 1993-05-21

Abstract

본발명은 두상 투영기(OHP)의 반사식 투영 방법 및 그 장치에 관한 것으로서, 종래의 두상 투영기에서는 책이나 서류등과 같은 비투과 물체는 직접 투영시킬 수 없는 구성으로 되어 있어 비투과 물체의 내용을 별도의 필름에 복사하여 투영기의 프레넬 렌즈 상면에 올려 놓고 두입시켜야 함에 따라 그 작업이 매우 번거롭고, 필름의 낭비를 가져 오게 되는 문제점이 있었다.The present invention relates to a reflective projection method and apparatus of a head projection projector (OHP), and in the conventional head projection projector, a non-transparent object such as a book or a document cannot be directly projected, so that the contents of the non-transparent object are separately As it is required to copy the film and put it on the top surface of the fresnel lens of the projector, the work is very cumbersome, and there is a problem that the film is wasted.

따라서, 본발명에서는 두상 투영기의 상면에 올려지는 책이나 서류등과 같은 비투과 물체의 조사되는 빛을 그의 양측면이나 상측부에서 실시하여 비투과 물체의 상이 반투과 거울 또는 반사거울을 통해 반사될 수 있도록 하므로서, 종래와 같이 비투과 물체의 내용을 별도의 필름에 복사하지 않아도 투영기를 통해 확대시켜 스크린상에 나타낼 수 있게 되어 제품의 신뢰도를 더욱더 향상시킬 수 있는 것이다.Therefore, in the present invention, the irradiated light of a non-transparent object such as a book or a document placed on the upper surface of the head projector is applied to both sides or the upper side thereof so that the image of the non-transmissive object can be reflected through a semi-transparent mirror or a reflective mirror. As in the prior art, the contents of the non-transparent object may be enlarged through the projector without being copied to a separate film and displayed on the screen, thereby further improving the reliability of the product.

Description

Reflective projection method of head projection projector and apparatus thereof

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

제3도는 본발명 반사식 투영 장치의 일실시예 구성도,3 is a configuration diagram of an embodiment of a reflective projection apparatus of the present invention;

제4도는 본발명 투영 장치에 설치되는 조명 장치의 사시도,4 is a perspective view of a lighting device installed in the present invention projection apparatus,

제5도는 본발명 반사식 투영 장치의 다른 실시예 구성도.5 is a block diagram of another embodiment of the present invention.

Claims

A method of reflective projection of a head projector in which light is irradiated from the outside of the projector body (1) toward the surface of the non-transmissive object (2) and the information of the non-transmissive object is projected onto the screen (9) through the reflector body (5).

Illumination devices 3 for irradiating light to the non-transparent object 2 mounted on the upper surface of the projector body 1 are installed on both sides of the non-transparent object 1 so as to face each other, and protrude from the projector body 1. The reflection of the head projector, characterized in that the reflector body (5) and the lens (7) having a predetermined inclination angle are provided in the reflector body (5) located at a predetermined height from the body (1) by the support (4). Projection device.

The reflective projection apparatus according to claim 2, wherein the illuminating device (3) is a lamp (302) provided inside the aspherical reflector (301).

The method according to claim 2, wherein the bottom of the support (4) is installed to maintain the non-transparent object (2) flat by installing an object holder (8) which can be moved up and down depending on the thickness of the folded and non-transmissive object (2) Characterized in a reflective projection apparatus of the head projection projector.

The head image as claimed in claim 2, wherein an illumination device 3 is installed at one side of the reflector 6 installed in the reflector body 5 to irradiate the light irradiated from the non-transmissive object 2 from the upper side. Reflective projection device of the projector.

6. A translucent mirror (6 ') is provided instead of the reflective mirror (6), and an illumination device (3) is provided above the translucent mirror (6'). Reflective projection device of the head projection projector.

※ Note: The disclosure is based on the initial application.