 |
| Subject | English | German |
| opt. | heat filter | Wärmefilter (placed in front of a lamp to protect condenser systems, interference filters etc.) |
| meas.inst. | heat filter | Wärmeschutzfilter |
| earth.sc., industr., construct. | heat filter | Waermeschutzfilter |
| tech. | heat filter | Wärmefilter |
| opt. | heat filter | Wärmeschutzfilter (placed in front of a lamp to protect condenser systems, interference filters etc.) |
| opt. | heat filter | Waermefilter |