LENS BARREL FOR PROJECTION TYPE PROJECTION VIDEO DEVICE AND PROJECTION TYPE PROJECTION VIDEO DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To realize high resolution by directly fixing a cathode-ray tube, a liquid crystal panel block to which the reflection type liquid crystal panel of a light writing type is to be attached and a write lens block projecting a picture to an outer barrel made to be a guide to reduce respective relative positional errors of the cathode-ray tube, the liquid crystal panel block and the write lens block. ;SOLUTION: In a write lens barrel, after an outer barrel 4 is fixed to a base with a fixing plate, a write lens block, the reflection type liquid crystal panel 32 of the front end part of a liquid crystal panel block 24 and a cathode-ray tube are held by the outer barrel 4. When the eccentric cam 14 abutted on the guide groove 10 provided in the circumferential direction of the barrel 4 is revolved, the relative position with the outer barrel 4 is changed to move the liquid crystal panel block 24 forward and backward. Moreover, when a sleeve 334 is moved in a revolving direction, the panel block 24 is revolved in the circuimferential direction. Thus, adjustments moving the panel block 24 forward and backward and inclining the panel block in the revolving direction are respectively independently performed.;COPYRIGHT: (C)1998,JPO