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| Method for making a holographic mirror |
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Beam scanning system adopting deflection disc
| Details |
Inventors: Cho, Sung-min; Lee, Won-hyung; Choi, Hwan-young; Lee, Moon-gyu; Min, Jee-hong; Kim, Young-il; Choi, Jin-seung; Eum, Jae-yong;
Assignee: Samsung Electronics Co., Ltd. (Kyungki-Do, KR)
Primary Examiner: Henry; Jon
Assistant Examiner:
Attorney, Agent or Firm: Sughrue, Mion, Zinn, Macpeak & Seas, PLLC
A beam scanning system including: a light source; a deflection disc rotatably installed over the light sources and having a hologram pattern on each of the upper and lower surfaces thereof, for diffracting beams emitted from the light source; and a plurality of mirrors for reflecting beams that have been diffracted by the deflection disc, to change the diffracted paths of the beams. Each of the upper and lower hologram patterns is formed with a low density relative to a one-sided hologram pattern. |
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DETAILED DESCRIPTION An object of the present invention is to provide a beam scanning system adopting a diffractive reflection disc, in which the deflection disc has hologram patterns on both upper and lower surfaces thereof, providing an effect as if a high hologram pattern is formed thereon, and simultaneously the bowing of the scanline, which occurs with the rotation of the deflection disc, can be corrected by the hologram pattern.
To achieve the above object of the present invention, there is provided a beam scanning system comprising: a light source; a deflection disc rotatably installed over the light source, having a hologram pattern on each of the upper and lower surfaces thereof, for diffracting beams emitted from the light source; and a plurality of mirrors for reflecting beams that have been diffracted by the deflection disc, to change the paths of the beams.
Preferably, beams emitted from the light source are primarily diffracted by the lower hologram pattern, and then diffracted again by the upper hologram pattern.
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Optical Systems 
