Test tube projection system and method
US4120575A · kind A · utility
2Cited by
4References
9Claims
0Family size
Inventor
Key dates
| Filing date | Jul 11, 1977 |
| Grant date | Oct 17, 1978 |
| Priority date | — |
| Expiry date | Jul 11, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system for the projection of the magnified image of the liquid contents on the wall of a test tube includes a light-tight cabinet, a light source, a test tube holding means which preferably positions the test tube at an angle of 10.degree.-40.degree. from the horizontal, a projection lens and a rear viewing screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.