To realize further miniaturization and to make the rigidity of a bearing high so as to restrain the occurrence of shaft runout to the utmost.
The optical device 2 is equipped with: an optical member 8 for guiding illuminating light emitted by a light emitting element 3 to an area to be illuminated, and having an incident surface 6 on which the illuminating light is made incident, an emitting surface 7 from which the illuminating light is emitted to the area to be illuminated, and a reflection surface by which the illuminating light made incident from the incident surface 6 is guided to the emitting surface while it is reflected; and a driving means for rotating the optical member 8 with respect to a rotary shaft L1 passing through the almost center of the emitting surface 7. In the optical device 2, at least a part (motor 20) of the driving means is arranged in a virtual cylinder P which the rotational locus of the rotating optical member 8 inscribes and which sets the rotary shaft L1 as a center axis. The illuminating device having the optical device 2 is provided.
| JP2000294491A | 2000-10-20 | |||
| JPH0963024A | 1997-03-07 | |||
| JP2004199024A | 2004-07-15 | |||
| JPH06351190A | 1994-12-22 |
Masatake Shiga
Masakazu Aoyama
Suzuki Mitsuyoshi
Tadao Takashiba
Hiroshi Masui
Kiyoshi Kato
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