| |||
| Plusglas m; Sammellinse f | |||
| Brennglas n; Negativlinse f | |||
| Sammellinse f (opt); Konvexlinse f | |||
|
convex lens : 18 phrases in 8 subjects |
| Astronomy | 6 |
| Health care | 1 |
| Medical | 1 |
| Medical appliances | 3 |
| Optics branch of physics | 1 |
| Physical sciences | 1 |
| Physics | 1 |
| Technology | 4 |