Patent · US Expired

Slit-lamp apparatus

US4175839A · kind A · utility

6Cited by

4References

7Claims

0Family size

Assignee

Carl Zeiss Stiftung · DE

Inventors

Ortwin Muller · Aalen, DE
Karl Grunvogel · Aalen, DE
Kurt S. Schulz · Williston, US

Key dates

Filing date	Oct 18, 1977
Grant date	Nov 27, 1979
Priority date	—
Expiry date	Oct 18, 1997

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B3/0075
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention contemplates slit-lamp apparatus for ophthalmological examinations and is characterized by simplicity of components designed to facilitate use, the use being assumed to involve the analytical operations most often needed. The instrument is portable and provides ready availability of slit-projector means and tonometer means when desired, on the microscope-viewing axis. All components are upstanding, with respect to the mounting base, and simple knurled-ring adjustments enable selection of projected-slit dimensions and filters.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.