| |||
| optical system | |||
| optical train | |||
| lens system; battery (of lenses and prisms) | |||
| optic system | |||
| |||
| optical systems | |||
|
optisches System : 68 phrases in 11 subjects |
| Automated equipment | 1 |
| Communications | 3 |
| Cultural studies | 2 |
| Earth sciences | 1 |
| General | 1 |
| Industry | 1 |
| Information technology | 3 |
| Microelectronics | 2 |
| Optics branch of physics | 51 |
| Physics | 2 |
| Video recording | 1 |