SU1335812A1 - Geodetic level with self-adjusting sighting line - Google Patents

Abstract

The invention relates to geodetic instrumentation and improves productivity by improving lighting technology. The compensator 3 tilts the sighting axis in the form of a 1-kind Porro prism turning system 8 and 9 placed between rectangular prisms 6 and 7. The rays passing through the lens 1 and the focusing lens 2 are introduced into the Porro system by the hypothesis edge of the prism 6. The system performs a full image wrap. Prism 7 breaks down the sighting axis and leads it to a horizontal position. Compensation 1 of the tilt axis of the sighting axis is carried out by displacing the prism 9 fixed on the damped workshop 10, which is capable of moving the center of gravity. 1 hp f-ly, 1 ill. ff with (L f 5 oo co 00 00

Description

113

The invention relates to a geodetic instrument, namely to optical levels, centri

The purpose of the invention is to increase labor productivity by improving the lighting characteristics of the level.

The drawing shows the optical layout of the level.

The level contains a lens 1, a focusing lens 2, a compensator 3, a grid 4 and an eyepiece 5. The compensator 3 consists of two rectangular prisms 6 and 7 installed in front of and behind a Porro 1-kind prism reversing system. The prism 9 is fixed on the damped mother 10 by a hypotenuse edge along the plane of compensation of the inclination of the sighting axis. Mat 10 is fixed on a trapezium 11, one side of which is rigidly connected to the body of the level and twice as large as its opposite side, fastened to the key. The sides of the trapezoid are intersecting elastic ribbons. Such a suspension system with a variable center of gravity reduces the length of the tandem with

The level works as follows (in the image.

The rays from the object pass through the lens 1, focusing the lens 2 and are reflected from the hypotenuse face of the prism 6. Entering the prism 1 8 and 9 Porro, they undergo a complete reversal of the image. Prism 7 isla: swings the axis and brings it into a horizontal position. With a purely transverse tilt of the level in a plane perpendicular to the plane of compensation, the system 8 and 9 of the Porro prisms and the rectangular prisms 6 and 7 work as a rigid system. When tilting the level, the slope of the sighting axis is compensated.

Editor N. Tupitsa

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Tehred M. Didyk Proofreader S Cherni

Order 4039/34 Circulation 676 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow F - 35, Raushsk nab. 4/5

Production and printing company, Uzhgorod, ul, Project "4

the offset of the prism 9 is fixed 1P

regarding

prisms 6 and 7, 1 are clearer and return it to the center of the i- grid. The required bending moment on the trapezium ribbons 11 to achieve compensation is created by moving the center of gravity of the suspension by balancing

The use of the proposed level with a self-aligning line of sight makes it possible to increase its light transmission by 10% by reducing the stroke length of the beams in the glass of prisms and also to combine two functions in the compensator — image wrapping and automatic stabilization of the numerical axis.

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gaining

1, a level with a self-aligning-with line of sight containing a lens arranged in series along the beam path, a focusing lens, a sight axis compensator with a damped head, a grid and an eyepiece, characterized in that, in order to increase productivity by improving the lighting characteristics of the level, tilt compensator; -; the sighting axis is made in the form of a prism reversing system of the 1st kind and located in front of and behind it along the first and second rectangular prisms, one of the features of the Porro system of the 1st kind fixed on the damper jsaHHOM of the hypothesis of the hypotenuse side parallel to the Gtloko1 :: ti compensation y) la tilt, sighting axis

2, The level non.l differs from the fact that, in order to ensure the possibility of adjustment, the damper of the BaBHHbrff master is made with the possibility of transmission: its center of gravity.

Claims (2)

Claim 1, A level with a self-aligning line of sight, containing a lens arranged in series along the beam, a focusing lens, and a compensator for tilting the sight axis c. a damped pendulum, a mesh and an eyepiece, characterized in that, in order to increase labor productivity by improving the lighting characteristics of the level, the compensator for the inclination of the sighting axis is made in the form of a prism wrap system Psfro of the first kind and located in front and behind. along the beam of the first and second rectangular prisms, while one of the prisms of the Porro system of the first kind is mounted on a damped pendulum with a hypotenous face parallel to the compensation plane of the tilt angle 2. The level of n <1, u and th with the fact that, from the axis. distinguished by the purpose of ensuring the possibility of adjustment, the damped pendulum is made with the possibility of moving the center of gravity.