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KMID : 1159320210230020139
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Korean Journal of Vision Science
2021 Volume.23 No. 2 p.139 ~ p.146
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A Simulation Study on Improvement of the F-theta Lens for Laser Scanning Unit
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Son Ho-Sung
Jeon Young-Wook
Kim Dal-Young
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Abstract
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Purpose : This study was conducted to improve the performance of a low-end f-theta lens for application to laser scanning unit.
Methods : A f-theta lens system was newly designed using ZemaxTM program. Results of this study were compared and evaluated in three items, such as spot diagram, ray fan, and Seidel aberrations.
Results : The newly designed f-theta lens system reduced the spot size and distortion of the incident laser beam, and particularly its spherical aberration was drastically reduced up to 77%.
Conclusion : The f-theta lens system designed in this study has greatly improved overall image quality and performance, and is expected to be applied to laser printer equipment.
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KEYWORD
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Confocal microscope, F-theta lens, Laser scanning unit, Lens design
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