SU966654A1 - Light optic system for motion-picture film printing apparatus of additi-printing - Google Patents

Description

The invention relates to the design of light-optical systems in which interference filters are used to create spectrozonal fluxes.

The known optical system of the lighting system for color continuous additive printing using interference mirrors, in which six optical elements 1 are used.

The disadvantage of the system is that at least four types of interference filters are used to form the three spectral streams and these filters are installed in non-parallel beams of light.

The closest to the proposed invention is a light-optical system for an additive printing apparatus containing a light source located on the optical axis, a condenser, whose focal t plane is associated with a light source, interference light filters and mirrors installed at an angle to it, light valves, collective lenses, light lines installed

in a parallel course of the rays between the interference light filters and mirrors, the lens and the printed window 2,

The disadvantage of this system is that, despite the reduction in the types of light filters used, the design of the lighting system is more complex, as in the device; seven optical elements are used.

The purpose of the invention is to simplify the design.

10 lighting system of the copy machine.

Claims (2)

This goal is achieved by the fact that in a light-optical system containing a light source located along the optical axis, a capacitor whose focal plane is associated with a SOURCE of light, interference light filters and mirrors installed under it, Zlom to it, light valves, collective lights, light guides mounted in a parallel path of rays between interference light filters and mirrors, a lens and a printed window, interference light filters that carry out the separation and coupling of spectrozonal optical , .Raspolozheny sequentially on the optical axis and op tically conjugated to identichnylp svetofil; ramie through light valves and kollekttshnye LYU13Y, ustapov ennye in spektrozonaliyh beams with parallel axes, and a Mirror la unfolded from each other by 90 °. The drawing shows the optical layout of the topic. The thread 1 of the lamp 2 is depicted with the help of the condenser 3 and the collective lenses 4 in the light valves 5. Collective lenses. 6 and 7 depict the light valves 5 in the pupil of the lens 8. The lens 8 depicts a uniformly illuminated aperture 9 in the print window 10. The light is divided into spectral zones using four interference light filters 11-14 and two mirrors 15 and 16. The interference light filters 11- 14 and the mirrors 15 and 16, installed before and after dividing the light into spectral zones, are mutually turned 90 °. The light valves 5 are installed in the focal planes of the collective lenses 4 and 6, and the thread 1 of the lamp 2 is in the focal plane of the condenser 3. Due to this, the interference filters 11-14 and the mirrors 15 and 16 operate in a parallel beam path and can be provided with smaller losses of illumination, the division of light into spectral zones. In order to ensure the same p. the number of lighting of the aperture 9 in the iipex spectral zones, hollow light lines 17 are used. Four hollow light lines 17 are installed in a parallel path between the interference optical filters 11-14, as well as between the transmission light filters and mirrors 12 and 15, 13 and 16. The light pipes 17 have one infrared filter) This or a prismatic form, their light dimensions are associated with the size of the exit pupil of the condenser 3. The use of light guides allows ypasnye divergence of the three spectral beams in the plane of the diaphragm 9. If necessary narrow spectral band, the mirrors 15 and 16 may be replaced by interference filters, otrazhayu1tsimi light transmissive in the green and in the blue and red zones. In this case, three types of interference filter must be used. The principle of operation of the device do not change if the optical lines are complete ,. and spectral division is carried out using prisms with interference coatings. The proposed optical system has a simplified design, which uses two types of interference light filter, the moat. Claims of the optical optical system for an additive printing press containing an optical source located on the optical axis, a condenser whose focal plane is associated with a light source, interferential: optical filters and mirrors installed at an angle to it, light valves, collective lenses, light guides, mounted in a parallel course of the rays between the interference light filters and mirrors, the lens and the printed window, characterized in that, in order to simplify the design, the interfering onE1ye filters, and separation is carried guides compound spectrozonal beams are arranged in series on the optical axis and is optically conjugated to identical filters through the light valves and the collective lens in ustanovleiiye spectrozonal beams with parallel axes, and the mirror deployed otiositelio each other by 90 °. Sources of information, prsh {1: s in consideration during the examination 1. S.Provornov, S. et al. Kinokopirovalno apparatus. M., Art, 1962, p. 176. 2. Authors certificate of the USSR N 377720, cl. G 03 33/06, 1971 (prototype). Blue -.- 3e / teHHU - kpacHitiu