| 摘要 |
PURPOSE:To obtain a compact and accurate attitude detector using a photo sensor and a light-shielding small ball. CONSTITUTION:V-shaped inclination surfaces 12-1 and 12-2 are formed opposingly at a case main body 11 and light reception sensors 5-1 and 5-2 are laid buried at openings 13-1 and 13-2 which are formed on each inclination surface. Also, the light reception sensors 5-1 and 5-2 and a light emitting element forming an optical switch are laid buried at the openings formed at the cover main body covering a case main body 11 and a small ball 3 is positioned in a state without shielding light of the two optical switches while a device is in horizontal attitude. |
