JP2533240B
PURPOSE:To prevent a virtual image to be formed by reflection at the inner surface of a filter at the time when an infrared ray emitting element is lighted from appearing on the monitor screen of an intercom master machine at the intercom slave machine with an infrared noctovision camera built in a...
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | PURPOSE:To prevent a virtual image to be formed by reflection at the inner surface of a filter at the time when an infrared ray emitting element is lighted from appearing on the monitor screen of an intercom master machine at the intercom slave machine with an infrared noctovision camera built in a spherical camera unit. CONSTITUTION:The intercom slave machine is constituted as follows. The head surface side of a spherical camera unit 7 opposite to the filter 33 is formed into a flat surface 20, and simultaneously, the circumference of the camera lens 8 of the above--mentioned infrared noctovision camera 6 is covered by a light shielding cylinder 22 provided with a flange part 21. |
|---|