SU1538042A1 - Method of measuring dihedral angles of prisms - Google Patents

Abstract

The invention relates to a measurement technique and can be used to control the angles of optical prisms. The aim of the invention is to improve the control accuracy by averaging the limb error within 360 °. A controlled prism 4 is mounted on the base surface of table 1 of the goniometer so that its working faces are parallel to the axis of rotation of table 1. Table 1 is turned together with the limb / is not indicated in the drawing / in which one face of the controlled prism 4 is perpendicular to the optical axis of the autocollimator 2 and fix by index the position of the limbus α ₁ . Then turn table 1 with the limb to the position in which the second face of the prism 4 is perpendicular to the optical axis of the autocollimator 2 and the position of the limb α _{2 is} fixed using the index. After that, an angle α _{3 is} selected which satisfies the conditions α ₃ −α ₁ = K ₁ ^. 360 ° and α ₃ -α ₂ = K ₂ ^. 360 °, where K ₁ and K ₂ are integers. Next table 1 is rotated together with the limb in the position in which the index through the limb fixed angle α ₃ and is mounted on the table surface 1 bazirovochnuyu flat mirror 3 perpendicularly to the optical axis autocollimator 2. Thereafter K ₁ times consecutively turn table 1 at first position, wherein the first face of the prism 4 is perpendicular to the optical axis of the autocollimator 2, and then the table with the limb is rotated to a position in which the flat reflector 3 is perpendicular to the optical axis of the autocollimator 2, then fixed ruyut using the index position of the limb * 98Ni modulation depth, the phase difference of harmonic signals. 2 il.BApOdOl NA.E.KONdRAHiNA621.317.39: 531.717i cooling capacity K B Others include a pulse width modulation further KOMpRESSOR.BBdObROTVORtsEVg.yu.bElSKA 621.56OdKlyuchEN K receiving space via a valve, spring-loaded against the housing B OCEBOM channels sleeve, A CHANNEL AREA IS CONNECTED TO A SUPPORT CAMERA. 1 il. BBRISHKOVO.C.STENIN621.891.43.038.5l ET DOWN THE FLUOR OF B29.114.302.2.004.55798

SHIN SERGEI AFANASIEVICH

KOPANEV IN CHESLAV Tihonovich + 7504304DEVICE FOR MEASURING ANGLES11 300004 TulA11 300027 TulA, METALLURGOV 45g-5

11 300008 TulA, GORKOGO 10-70

11 300040 TulA, Michurina 137-9 The invention relates to measurement technology. C

Description

The invention relates to a measuring technique and can be used to control the angles of optical prisms.

The aim of the invention is to improve the control accuracy by averaging the limb error within 360 °.

The drawing shows a functional diagram of the device that implements the proposed method.

A device that implements the proposed method comprises a goniometer table 1, mounted rotatably around an axis, an index (not shown) perpendicular to the table's base surface, an index (not shown), a limbus (not shown), an autocollimator 2, whose optical axis is perpendicular to the goniometer table 1, flat the reflector 3 mounted on table 1 so that its reflective plane

five

0

five

the bone is parallel to the axis of rotation of the table 1. Table 1 can be rotated with or without a limb.

The autocollimator 2 is made with the possibility of rotation around the axis of rotation of the table 1 together with the limb. A controlled prism 4 is mounted on the base surface of table 1 of the pionometer so that its working faces are parallel to the axis of rotation of table 1.

A device that implements the proposed method works as follows.

Table 1 is rotated together with the limb to the position where one face of the controlled prism 4 is perpendicular to the optical axis of the autocollimator 2, and fixed using the limb position index o. Then turn the Czholik 1 with the limb to the position where the second face of the prize is 51380806

we are 4 perpendicular to the optical axis, the angle between the first and second gran -1

autocollimator 2 and fixed with on-prism 4 is determined from the expression

using the index power the limb position d% After that, an angle da is selected which satisfies the conditions

n 180 ° - and „+ 1E).

-one

 - d, k, -360

and

e - g k 1.360

where k (and k 2 are integers.

Then, table 1 is rotated with the limb in position, at which, using the limb index, the angle d $ is fixed and the flat reflector 3 perpendicular to the optical axis of the autocollimator 2 is installed on the base surface of table 1.

After that, successively kt, first turn table 1 to a position in which the first face of the prism 4 is perpendicular to the optical axis of the collimator 2, and then rotates

The method of measuring dihedral prisms, which consists in placing the goniometer on the table at

wag the table with the limb in position, wasps ,.

 5 th, turn the table with a limb in which a flat reflector 3 perm tm tm- „„ „„ „„ „„ „

The penicular of the optical axis is an autocollocation, in which one face of the prism is perpendicular to the optical axis of the autocollimator and fixed with the index power the position of the limb d; limb position d

Liemator 2, then fixed using the index position of the limb d.

one

The angle o (1e between the first face of the prism 4 and the flat reflector 3 is determined from the expression

.:BUT

cU

After performing these operations, table 1, together with the limb, is turned to a position at which the angle (3,

35

and then calculate the angle eln between the first and second faces of the prism, which is characterized by the fact that, in order to increase the accuracy of control, the table is turned together with the limb a. Then only one table is turned to a position in which at which the stas-index over the limb fixes the angle A3, the cue reflector 3 is perpendicular to the optical axis of the autocollimator 2.

After that, successively k2 times and k are integers, first set table 1 to 45 on a table perpendicular to the optical position, at which its second face of the autocollimator axis is a plane reflection perpendicular to the optical axis of the author, sequentially k, once collimator 2, and then rotate the table to the position, with the table together with the limb to the position where the first face of the prism is perpendicular at which the flat reflector is 3 perpendicular to the optical axis of the autocolleud which corresponds to conditions 0 (3 «i

360 ° and about (3 -df k -ZbO0, rflek, 50

penticular ren optical axis autocode

.limator 2, then fixed with | using the index position of the limb v.

The angle otjjj between the second facet of the prism 4 and the flat reflector 3 is defined by - 5 liters from the expression

then turn the table with a limb to a position in which the flat reflector is perpendicular to the optical axis of the autocollimator, then fix the position of the limb d with an index, then turn the little table with a limb into a position in which then go

° chz

n 180 ° - and „+ 1E).

Since the angles dt3 and kj and k2 are measured, respectively, over the limb within one revolution, the measurement error of these angles is reduced, as the accumulated limb error within one revolution is zero.

Therefore, the accuracy of the measurement of the prism angle is improved.

The prism angle measurement operation can also be performed by alternately rotating table 1 without a limb and autocollimator 2 with a limb.

Claims (1)

Invention Formula The method of measuring the dihedral angles of prisms, which consists in placing a prize on the goniometer table. Mu, turn the table with limb in tm „tm-„ „„ „„ „„ „„ A position in which one face of the prism is perpendicular to the optical axis of the autocollimator and the position of the limb d is fixed using an index, then the table with the limb is rotated to a position in which the second face of the prism is perpendicular to the optical axis of the autocollimator and the position of the limb di is fixed using the index and then calculate the angle eln between the first and second faces of the prism, which is characterized by the fact that, in order to increase the control accuracy, the table with the limb is turned to a position where the angle A3 is fixed by means of an index on the limb conditional 0 (3 "i 360 ° and about (3 -df k -ZbO0, rflek, mator, and then rotate the table with a limb to a position in which the flat reflector is perpendicular to the optical axis of the autocollimator, then fix the position of the limb d using an index, then rotate the table with the limb to a position in which the angle d is fixed by means of an index over the limb, and then the table is turned to a position in which the flat reflector is perpendicular to the optical axis of the autocollimator, then successively k, once the table is turned to the position at which the second facet is we perpendicular to the optical autocollimator OCP, and then turn the table with the limb in the position in which a and 15380428 The flat reflector is perpendicular to the optical axis of the autocollimator, after which the limb position is determined by means of an index. k2 dependency but ““ 180 4. (csl ". AuL) b,}