SU1425574A2 - Lighting fixture - Google Patents

Abstract

The invention relates to optical instrument making, and more specifically to microscope illumination devices, which are characterized by a high uniformity of illumination throughout the entire field of view with a wide range of light sources used. The light beam of the light source f after passage of the collector 2 is multiplied by each of the two adjacent parts of the combined lenticular raster 3 into a plurality of beams which, after passing through the capacitor 4, form two different interference patterns on the surface of the illuminated object. The light source 1 is installed in the front focus of the collector, and the rear focal planes of the lenses of the raster 3 are aligned with the front focal plane of the condenser 4, in the back focal plane of which the illuminated object is located. Due to the fact that the tags X ji and X of the raster parts are 2: 1, and the apertures G p of the lens elements of the rasters are equal when summing the illumination of the interference patterns, the distribution of the illumination is smoothed. 2 Il. a) (L with

Description

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The invention relates to optical instrumentation, more precisely to the illumination devices of a microscope, and is an improvement of the device according to the author. St. No. 1118948.

The purpose of the invention is to improve the uniformity of illumination throughout the field of view while expanding the range of light sources used,

FIG. 1 shows a basic optical lighting circuit; devices5 in FIG. 2 -. View A on | FIG. 1 (lens raster), i The device consists of successively installed along the optical | axes of the light source 1, the collector 2 with the focal length fs.od, the lenticular raster 3 and the condenser 4 with the focal length f {«JHA Source t (the light is set in the front focus of the collector 2, the lens raster 3 is made of a combination of internal parts (parts 5 and 6 connected to each other, having a common first flat surface).

The back focal planes of the lino-jBtix elements of rasters 5 and 6, the focal lengths available fp, RF are combined with the front focal plane of the condenser 4, the illuminated object is: | in the rear focal plane 1 |: ondensor 4.

I The shape of the pupils of the lens elements of FIG. 2) is chosen for ease of understanding square. The lens raster 3 is complete as a part, which is a single whole, which is easily realized by casting or pressing, the same Yako both parts 5 and 6 of raster 3 can be made as separate parts,

which are then assembled into a single lens raster 3, for example, by gluing or planting in a single frame. The steps of parts 5 and 6 of the X4 lenticular raster and Xa are related to each other as 2; 1. Apertures (5 p lens elements of rasters are equal to each other.

The device works as follows.

The light beam of the light source 1 after passage of the collector 2 is multiplied by each of the parts 5 and 6 of the lens raster 3 into a plurality of beams, which, having passed through the condenser 4, form two different interference patterns on the surface of the illuminated object. When summing up the illuminations of these paintings at each point of the floor, a platform is obtained with a smoothed (pronounced) distribution of illumination over the entire surface, the size of which is determined by the formula.

Claims (1)

Y fwMA formula inventions Lighting device on auth. St. No. 1118948, which is different from the fact that, in order to improve the uniformity of illumination across the entire field of view when extending the range of used light sources, the lenticular raster is made, combining from two adjacent ones to one another, in one part of two times more than schazha lens raster another while maintaining the equality of apertures, lens elements rasters. Type A Xj FI.2