| Patent Number |
Title Of Patent |
Date Issued |
| 4907882 |
Surveying instrument for automatically taking measurements |
March 13, 1990 |
| The surveying instrument contains a component part (1) for the optical imaging of a target and a camera (2) for the electronic acquisition of the image produced in the optical instrument part. A reference mark (20) is located in the optical part (1) of the instrument, and this is outside |
| 4759131 |
Method and apparatus for marking image points in photogrammetric surveys |
July 26, 1988 |
| A stylus is briefly placed on the surface coating of photographs for forming an artificial marking symbol on the coating. The stylus oscillates in the ultrasonic frequency range. Part of the oscillation energy of the stylus is converted into frictional heat producing a marking symbol in |
| 4717246 |
Microscope with movable binocular tube |
January 5, 1988 |
| A microscope includes a stand with an upright. A generally L-shaped motion box is movable along the upright. A vertical portion of the motion box surrounds the upright, while its horizontal section provides a support for the microscope optical system. An objective is fixed to the bottom |
| 4715714 |
Measuring device for determining relative position between two items |
December 29, 1987 |
| The measuring device is used for determining a relative position between a first item and a second item or the image thereof. The items are displaceable or rotatable relative to one another. The first item has a code carrier, which is arranged along a path. The code carrier is provided |
| 4697893 |
Microscope with a binocular tube |
October 6, 1987 |
| A microscope includes a generally L-shaped motion box and an optical support located on a horizontal leg of the motion box. A binocular tube is fixed to the optical support. An objective changer is guided in the horizontal leg of the motion box and supports a first objective for ster |
| 4623790 |
Apparatus for digital angular measurement |
November 18, 1986 |
| In an apparatus for the digital measurement of an angle means are provided for a course and a fine measurement. For the course measurement, full intervals of a generated periodical signal are counted, and for the fine measurement, a reference mark is provided within the periodical signal |
| 4620788 |
Apparatus for measuring pulse signal delay interval |
November 4, 1986 |
| Apparatus for measuring the time delay between pulse signals, particularly in conjunction with electro-optical range finders. A coarse measurement counter counts the output of a reference oscillator, while a fine measurement interpolator determines the residual time at the start and |
| 4607218 |
Digital phase measurement method |
August 19, 1986 |
| In a method for the mathematical, digital measurement of the phase difference of two periodic or cyclic signals U and V of the same frequency by averaging from n elementary measurements Mi, a timing signal of a much higher frequency and asynchronous with signals U and V is counted betwee |
