SU1402816A1 - Double polychromator - Google Patents

Abstract

The invention relates to the field of optical spectral instrumentation. The aim of the invention is to improve the quality of the image of the spectrum by eliminating the imposition of spectral orders. A nolichromattor contains two dispersing cascades with diffraction ren- tation-mp. Disnergative nrism is set in front of each grid. As a result of the action of the first cascade in the plane of the intermediate diaphragm, inclined rows of spectra of various orders are formed. The hole in the intermediate diaphragm coincides with a single line of the spectrum. The prism installed in front of the grating in the second cascade is oppositely oriented to the prism of the first cascade so that their total dispersion is equal to ny, 1yu. In this case, the lines of the spectrum at the output of the phthromator occupy a horizontal position, i.e., the slope is compensated. The dual semi-chromator is convenient for working with multichannel photon cameras such as P-TV with 1 cameras. I n, i. 1C cl

Description

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11:.; I); ici4Mi (i.e., refers to the optical SPOK1 p; |,: n11 (), mu ripH6 ()) etiiiK).

ili .ib of the invention is an improvement in the quality of T - ii.i and: and) the spectrum of the spectrum by excluding i: i; i; i / KenHH of the spectral gyyms.

lUi is the same irreplaceable diagram; i) i o | 1o, lnchromator.

.VcTpoflcTBO contains the input nte. ib I,; and-åe p.Loskoe zerk.yu 2, the first mitory of the objective 3, tiepByio nrizmu 4, (ie | Mi io di (|) raktsio (1st peiiiei Kx 5, iiepBiJi-i (focusing () (5 , 11p1O and: zhut () of a cn1o dia (|)) agmu 7, the second collimator of the | nd 8, the prism 9,); and-; fractional rendition of the I), the second focus of the 1: 1 obsc 11. The second nlosky zea ka. K) 12, B1 h about dia (|)) a1 well 13.

, 11 “) Yolnoy Nolmh) the ohm works with; | food about-.

11sled h 1st och. Radiation nostut ast in no. a chromator h (RSZ input tse, 1L 1, and naravlen .1 yu Yu. mir; k) .m 2 on the thread XO. |, 1st simulator 3. Parallel beam of rays or count. Shchatora passes through the dysnegamyioiiL vK) irizma 4 to the diffraction grating 5. After diffraction on the grating .i.i.i, “the teaching of the person passes irisma 4 and gives to the () () KycHpyioiuiift ob1) lecture 6, which builds an image spectrum in iloskosti iromezhetochioy diaphragm 7 R) esul1) Tat (combined action 1) 1 4 and 5. flocks () in the shadows but schematic scrossed dispersion, on) azovan P) 1Y in the first helmet .. and i): | ichromatO |) and the spectrum is composed of several lines of sorts of razlivap1 1kh ior p. These lines are of different types of mines; n) The main points of the center are the input lines / lines and (ди) lines and objects of the line. () 2)) in the middle of the intermediate diaphragm 7, it should be 15 1 ia of i-orientation with i-orientation with the working line of the sector formed by the first cascade. Thus, in the second |) th helmet. 1 comes to the world of studies, free exercise,: the teaching, free from 1a, 1x1 spectra of other orders.

The diffracnioin reggette K) of the second cascade of the ustapes: 1a but with respect to the grid of the 5th not) 1i)) of the cascade according to the scheme C, K1zhepi ds-ie () sy. Objectives), 8, 11, and and; 1e mirror, on 12, act in a similar way to objectivities.h 3 .. 6 and mirrors,: | у 2 ие) In () a helmet;:. A. Prism 9

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o) Pentirovaia in the opposite direction. Well, according to oTHoniennio to prism 4, and su.mmar1-1a dispersion of E1D1X prisms is equal to iy: 1yu. Therefore, the line of the spectrum, ir) and its lines through the intermediate diaphragm} 7. again zay.met horizontal position in the output plane of the yu diaph) of the armature 13. That is, the slope of the line (length, arising in the nervous dism - a jergy cascade will be compensated. A double iolichromator provides a separate pattern for a pattern of the spectral holes of the diffraction loop when you tilt the working spectrum spectrum at the output of an ichirchromator. This provides a better BI ICOKOC image quality 5 iHyHyochromator. your friends of this type, which, in turn, creates usu.yyu d; 1 it and i) having it in conjunction with .mpog O-cana.lip photon-receivers, nairi.mer with raz.chichnymi television systems. The device can be found in a highly sensitive detector, which can be used to control atmospheric pollution with waste materials, I and I, I, X, X, I, I and I; p and g n and.

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Form of invention

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/ Prichinoy polychromator, containing an optical first entrance slit, first n, 1x mirror, nerve1) 1st count, .1 multiplex lens, first diffraction pattern

0 first focusing lens, 1: mezh - gc 1n aperture, second collimator about lenses, second diffraction replica, BTOpoii focusings about 1 lectures, second n. Yu mirror and output dia- (fiparMy, characterized in that, with ne, 1

5 u Image quality by means of .. ..: how about. yuzhepi of spectral scopes, ne) e; : diffraction gratings are set by the 15- / K n), the direction of the dis 11C of which the iperidicus is: 1 direction; 1enia dey) of the diffraction) optic, and npe; i -;) M- l ju-iup-i nri: -; m pacno. io / kein i io-injc etropol | from n, the variance of the dispersion of the di- (|) racciopi lattices, Gritsch pr (5 interjuts - -: - a diaphragm. so that its oriiepCTue coincides with the shape and on) of c) with the working line of the spectrum in Fok. the plane of our ()) K) nie-go lens.

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Claims (1)

A double polychromator comprising an optically coupled entrance slit, a first flat mirror, a first collimator lens, a first diffraction grating, a first focusing lens, an intermediate aperture, a second collimator lens, a second diffraction grating, a second focusing lens, a second flat mirror and an output diaphragm, characterized in that, in order to improve image quality by eliminating the imposition of spectral orders, prisms are installed in front of the diffraction gratings, the dispersion direction of which perpendicular to the direction of dispersion of the diffraction gratings, and the refracting angles of the prisms are located on different sides of the dispersion plane of the diffraction gratings, and the intermediate diaphragm is so defined. that its hole coincides in shape and orientation with the working line of the spectrum in the focal plane of the first ([yuxing lens.