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AB Svensk Filmindustri Patents |
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Assignee: AB Svensk Filmindustri
Address: Stockholm, SE
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4741605 |
Multifocal objective |
May 3, 1988 |
| The present invention relates to an image-forming objective which is capable of forming sharp images of objects at at least two different distances from the objective, there being arranged at one focal plane of the objective a corrective element divided into at least two fields in wh |
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