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1. KR1020050016993 - LENS SYSTEM FOR MANUFACTURING CRT SCREENS

Office Republic of Korea
Application Number 1020057000242
Application Date 06.01.2005
Publication Number 1020050016993
Publication Date 21.02.2005
Publication Kind A
IPC
H01J 9/00
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
9Apparatus or processes specially adapted for the manufacture of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
H01J 9/22
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
9Apparatus or processes specially adapted for the manufacture of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
20Manufacture of screens on or from which an image or pattern is formed, picked-up, converted or stored; Applying coatings to the vessel
22Applying luminescent coatings
Applicants KONINKLIJKE PHILIPS ELECTRONICS N.V.
코닌클리케 필립스 일렉트로닉스 엔.브이.
Inventors SLUYTERMAN ALBERTUS A. S.
슬루이테르만,알베르투스,아.,에스.
Agents 문경진
Priority Data 02077835.3 11.07.2002 EP
Title
(EN) LENS SYSTEM FOR MANUFACTURING CRT SCREENS
(KO) CRT 스크린 제조를 위한 렌즈 시스템
Abstract
(EN)

A lens system (10, 20) is disclosed, comprising a first (13, 23) and a second (11, 21) lens. The refractive index of the second lens (11, 21) is higher than that of air, but lower than the refractive index of the first lens (13, 23). The lenses (13, 11, 23, 21) are arranged in direct contact with each other such that a critical refractive interface (22) is formed. The invention provides for exposure of CRT screens with a lower sensitivity to surface roughness, in particular when manufacturing screens with large deflection angles.

© KIPO & WIPO 2007

(KO)
제 1 렌즈(13, 23) 및 제 2 렌즈(11, 21)를 포함하는 렌즈 시스템(10, 20)이 개시된다. 제 2 렌즈(11, 21)의 굴절율은 공기의 굴절율보다 더 크지만, 제 1 렌즈(13, 23)의 굴절율보다 더 낮다. 렌즈(13, 11, 23, 21)는 서로 바로 접촉하도록 배열되어, 임계 굴절 경계면(22)이 형성된다. 본 발명은 특히 큰 편향각을 갖는 스크린을 제조할 때 표면 거칠기에 대해 더 낮은 감도를 갖는 CRT 스크린의 노출을 제공한다.

Also published as
CN03816253.9
EP2003732980