SU257765A1

SU257765A1 -

Info

Publication number: SU257765A1
Application number: SU1192854A
Authority: SU
Inventors: В. Спивак А.
Original assignee: Завод Арсенал им; Завод Арсенал им, В. И. Ленина; В. И. Ленина
Priority date: 1967-10-25
Filing date: 1967-10-25
Publication date: 1968-11-30

Description

(54) ОПТИЧЕСКОЕ УСТРОЙСТВО ДЛЯ СОВМЕЩЕННОГО ОТСЧИТЫВАНИЯ ДИАМЕТРАЛЬНО ПРОТИВОПОЛОЖНЫХ- ДЕЛЕНИЕ ЛИМБОВ УГЛОИЗМЕРИТЕЛЬНЫХ ПРИБОРОВ(54) OPTICAL DEVICE FOR COMBINED READING OF DIAMETRICALLY OPPOSITE - DIVISION OF ANIMBERS OF ANGLE MEASUREMENT INSTRUMENTS

Изобретение касаетс устройств дл совмещени отсчитывани диаметрально противоположных делений лимбов углоизмерительных приборов, например теодолитов.The invention relates to devices for combining the counting of diametrically opposite divisions of the limbs of angle measuring instruments, for example theodolites.

В известных устройствах разделенные изображени диаметрально противоположных делений считываютс с помощью своего оптического микрометра, А если микрометр один, то наличие в нем отдельных компенсаторов , например плоскопараллельных пластин , дл диаметрально противоположных частей лимба, изображени которых предварительно разделены с помощью оптического мостика, приводит к усложнению конструкции устройства и технологическим трудност м при его сборке и юстировке.In known devices, divided images of diametrically opposed divisions are read using their optical micrometer. And if there is only one micrometer, the presence of separate compensators, for example plane-parallel plates, for diametrically opposite parts of the limb, whose images are pre-separated using an optical bridge, complicates the design. devices and technological difficulties in its assembly and adjustment.

Цель изобретени - упрощение сборки и юстировки, а также конструкции устройства при обеспечении высокой точности отсчитывани . Это достигаетс тем, что в предлагаемом устройстве обе призмы оптического мостика выполнены одинаковыми, например пр моугольными, а призменный блок выполнен в виде призмы с зеркальными разделительными участками на гипотенузной грани, склеенной с призмой с крыщей.The purpose of the invention is to simplify the assembly and adjustment, as well as the design of the device while ensuring high accuracy of counting. This is achieved by the fact that in the proposed device both prisms of the optical bridge are made identical, for example rectangular, and the prism block is made in the form of a prism with mirror separating areas on the hypotenuse face glued to the roof prism.

На фиг. 1 изображена отсчетное устройство с микрометром, компенсатор котоб рого выполнен в виде плоскопараллельной пластинки; на фиг. 2 - то же с клиновым окул рным микрометром.FIG. 1 shows a reading device with a micrometer, the compensator of which is made in the form of a plane-parallel plate; in fig. 2 - the same with a wedge ocular micrometer.

Отсчетное устройство совмещенного отсчитывани с одинарным оптическим кгакро0 метром состоит из двух алидадных пр моугольных призм 1, сложного объективаA combined counting reading device with a single optical meter with a meter consists of two alidade rectangular prisms 1, a complex lens

( ) 2, объектива 3 отсчетного микроскопа , одной поворотной плоскопараллельной пластинки 4 с жестко св занной с ней щка () 2, objective 3 of the reading microscope, one rotatable plane-parallel plate 4 with a jaw rigidly attached to it

Claims

5 loy 5 micrometers, separating npvi3menny block containing a prism 6 with a roof, a prism 7, on the hypotenuse face of which there are two mirror sections with interfaces P and P, a prism 8 of the micrometer scale with a reference index on the output face, a collective lens 9 with a small 1 and 11 large windows, aperture, pentaprism 12, lens 13 with an oculum 14 reading microscope. CJbbCiKTUB 2 projects the lUTpiixn of one part of the scale of the limb 15 into the plane of the dashes of the diametrically opposite part so that they partially or completely overlap (match; ate). When the alidade rotates around the vertical axis, the images of the strokes of diametrically opposite parts superimposed on one another will turn the limb lines together (with the same speed) in the same direction. By lens 3, these divisions of the limb are projected through a plane-parallel plate 4 into the plane of the interface P of the separation prism unit. However, when entering the separation unit, the beam of rays will be divided into two parts on the first boundary of the section P. Due to the presence of the roof in prism 6, one of these parts will receive an additional 180 ° wrap with respect to the second part of the beam passing through prism 7. Due to this, npvi rotation of the alidade in the large window of the aperture diaphragm will move along the border of the section of RP RP in the diametrically opposite directions with the same speed, combining the diametrically opposite diagrams and measuring the interval between them, it is enough to have one rotating plane-parallel plate with scarlet micrometer, which is positioned in the beam path between the objective lens of the microscope and measuring indicator separating unit. In order to prevent extraneous images (limb lines) in the plane of the micrometer chambers, which are in the same plane with the interface P, and the reference index of the prism 8, a certain path difference is created between the rays passing through the prisms 6 and 7 the limb scale in the plane of section P ,, and the rays passing through the prism 8 of the scale illumination with an i-pa microme, i.e., a different optical path length of the rays in these prisms creates a difference in the refractive index or increase (decrease) the thickness of the equivalent prism of plane-parallel plas: gina. Similarly, the construction and division of the image, as well as the backlight of the micrometer scale, are performed in the variant of the counting device combined with a single wedge micrometer. The invention is an optical device for combining the reading of diametrically opposed divisions of the limbs of angle measuring instruments, for example theodolites, containing an optical bridge formed by prisms rigidly connected with alidade and an objective located between them, and a reference microscope with an ocular micrometer, the compensator of which is, for example, a plane paralleled parallel microscope with an objective micrometer that has, for example, a plane-parallel lens, and a reference microscope with an ocular micrometer. in the course of the rays in front of the prism block in the ocular part of the microscope, I differ by the fact that, in order to simplify assembly and adjustment, and the construction of the device while ensuring high accuracy of counting, the two prisms of the optical bridge are identical, for example rectangular, and prismatic block formed in a prism with mirrored dividing portions on hypotenuse side, glued to the prism with kryschey. Well ShZh x 587

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