To provide an optical scanner suppressing reflection of a luminous flux in a boundary with air and substantially fully absorbing unnecessary light, and also to provide an image reader and an image forming apparatus each equipped with this scanner.
The optical scanner 1 is equipped with: housings 10-12 which support at least a part of the optical scanner; and an antireflection structure which is installed at least in a part of the housings 10-12 and which has structure units having a prescribed shape and periodically arrayed with a pitch smaller than the shortest wavelength of a laser luminous flux. At least either the antireflection structure itself or a part of the housings installed with this structure is composed of a material that absorbs a laser luminous flux. With this material, the laser luminous flux is absorbed whose reflection is suppressed in the antireflection structure.
ICHIHASHI HIROMOTO
YOSHIKAWA TOMONOBU
| JP2002148549A | 2002-05-22 | |||
| JP2002182003A | 2002-06-26 | |||
| JPS6247832A | 1987-03-02 | |||
| JPH07318834A | 1995-12-08 | |||
| JP2003270569A | 2003-09-25 | |||
| JP2003240903A | 2003-08-27 | |||
| JP2002131670A | 2002-05-09 | |||
| JPH0588096A | 1993-04-09 |