SU794589A2 - Light optical system for motion-picture film printing apparatus of continuous additive printing - Google Patents

Description

which, in the plane of the input faces / three prismatic beam-splitting 8, due to the mixing of the light flux, a fairly uniform distribution of illumination is obtained with complete elimination of the influence of the discrete structure of the filament body. Color separation additive light-, filters 9 are pasted directly onto the output faces 10 of the respective beam splitters 8. Three zonal streams, uniformly distributed over the entire plane of the additive light filters 9, pass through the metering holes of the shape of P and the passport 12, each of the respective light guide 13, which narrows “And you move up to 3 mM. The input ends of the light paths 13 are made in the form of rasters 14, and the planes of the output ends, 15 light lines 13 are parallel between And are located at an angle ip to the optical axis of the OO system. In the immediate vicinity of the exit ends .15 of the light lines 13, the plane of the film 16 is located.

During operation of the device, the film 16 alternately passes each. the end 15 of the light lines 13, i.e. the seal is guided by a printing slot. Color separation plan of light filters. 9 are structurally close to the rasters of the 14 input ends of the light lines 13 in such a way that only the filter // and passport 13 are between them. This led to a sharp drop in the vignetting of three color separation light beams and to an increase in the efficiency of using the light flux of the filament incandescent lamp 2. In addition, the plane OUTPUT ends 15 of the light lines 13 are at an angle p (see

FIG. 2) and the optical axis 00 of the illuminator which is determined by the formula

P arc sin (No..cosp);

five . : .. /.-...:, where a is the angle between the optical axis of the OO. illuminator and normal to film path; , .-, .

n - “efcda flaring factor, 0 from which the light lines are made. This embodiment of the output ends .15 provides perpendicular falling on the film.

The use of the proposed illumination of bodies improves print resolution. This is due to a decrease in width. "printed lines; spruce up to 3 mm, and also due to the fact that the light falls perpendicularly" along the film plane, moreover, the effective yi-ol of the divergence of the light beam along the film path is 60 ° and in the polral direction - about 40

F O p. M u l k iz & re te n u

. Svetooptichesky SKa Sytem for continuous-motion additive printing machines by author. St. No. 684488, characterized in that, in order to improve

uniformity of illumination in the printed window, it is equipped with an additional block of three prismatic light pipes between the passport and the printed window, a larger base with rasters on the passport and a smaller one on the printed window, with the planes of the output light guide creators parallel between the cathedral and are located by an angle to the optical axis ..

/ "

MtHHu running direction

N

Claims (1)

Form of invention Light optics for a film copier of continuous additive printing according to ed. St. No. 684488, characterized in that, in order to improve the uniformity of illumination in the print window, it is equipped with an additional unit of three prismatic optical fibers installed between the passport and the print window, facing a large base with rasters on them for the passport, and a smaller one for the print window moreover, the planes of the output ends of the optical fibers are parallel between the cathedral and are located by a sub-angle to the optical axis. ! Ir.y X f f captive / FIG. 2 ') I-794589 / y-T ".. />' films f '' • -'I .7 ¹ \ · 'Direction of travel I, \ 0. ^; about . / Ί ’ 1 1 0 ' • - / -.- 7/7 /. '>. ί /.77^ | i.-7 / ^:? 1- -----——; ------------—_______ L Fig.Z A type. Kharkiv. Phil. before “Patent” 'Z ··' · - '' k. '* - ^g ';'.; · ^Λ ·; / / 4 ' ^x