SU1672205A1

SU1672205A1 - Instrument for estimating manufacture errors in dihedral right angles and device for installing zero count therein

Info

Publication number: SU1672205A1
Application number: SU874290203A
Authority: SU
Inventors: Юрий Петрович Контиевский; Александр Владимирович Бакеркин; Виктор Петрович Харьков
Original assignee: Предприятие П/Я Г-4149
Priority date: 1987-07-27
Filing date: 1987-07-27
Publication date: 1991-08-23

Abstract

Изобретение относитс к измерительной технике и используетс при контроле оптических деталей. Целью изобретени вл етс повышение точности определени погрешности, а также повышение точности установки нулевого отсчета. При определении нулевого отсчета устройство устанавливаютс в два положени . Углы, измеренные в первом и втором положени х, в сумме составл ют 180°, поэтому нулевым отсчетом будет среднее значение. Параллельный пучок лучей от осветител 1 проходит светоделитель 3, отражаетс от грани призмы 6 и светоделителем 3 направл етс через оптический клин 2 на светоделитель 4. Отраженные лучи частично проход т светоделитель 4 и попадают в наблюдательную систему 5. Отразившиес от грани лучи светоделител ми 3 и 4 вновь отражаютс от грани призмы 6. Процесс повтор етс . Угловое рассто ние между соседними изображени ми составл ет 2δ, где δ - отступление угла между гран ми контролируемой призмы от 90°. 1 ил. 2 с.п.The invention relates to a measurement technique and is used in the inspection of optical components. The aim of the invention is to improve the accuracy of the determination of the error, as well as to improve the accuracy of the zero reading setting. When determining the zero count, the device is installed in two positions. The angles measured at the first and second positions add up to 180 °, so the zero reading will be the average. A parallel beam of light from the illuminator 1 passes the beam splitter 3, reflects from the face of the prism 6 and the beam splitter 3 is directed through the optical wedge 2 to the beam splitter 4. The reflected rays partially pass the beam splitter 4 and enter the observation system 5. The beams of beam splitter 3 reflected from the face 4 is again reflected from the face of the prism 6. The process is repeated. The angular distance between adjacent images is 2δ, where δ is the angle deviation between the faces of the controlled prism from 90 °. 1 il. 2 sec.

Description

Фиг 2Fig 2

Claims

Claim

1. A device for determining errors in the manufacture of straight dihedral angles, containing optically coupled illuminator, a measuring system, two flat beam splitters and an observation system, characterized in that. in order to increase the accuracy of determination, the measuring system is made in the form of an optical wedge mounted with the possibility of rotation around the optical axis and a reference element and is located along the radiation from the illuminator between the beam splitters, which are installed at an angle to the optical axis of the device.

2. A device for installation in a zero readout device, comprising an optical unit with two reflective faces mounted at right angles to each other, characterized in that, in order to increase the accuracy of the installation, the optical unit is made in the form of a prism with a reflective coating on the legs of the catheter and optical plate with a hole and with a partial reflective coating on one of the planes bonded to each other so that the leg of the prism forms an angle with the plane of the plate with a reflective coating, additional to the right angle for zm, and the optical unit is located between the beam splitters with the possibility of fixing in two positions.