| 摘要 |
1291176 Projection apparatus; projection supports F W HEYE 2 March 1970 [7 March 1969] 9845/70 Headings G2A and G2J As an aid to layout composition, multiple projectors 10 are mounted on shelves 3 of a frame 1, each projector being pivotable about vertical and horizontal axes 4, 7 by means of lever 6 and screw 9 whereby images of layout elements may be projected on to any part of a screen, the elements being recorded on transparencies carried in rotatable carriers 13 on each projector. Zoom lenses provide variable image size. All projector functions may be motor controlled. |
