4. Photocopying
  5. Projection printing and copying cameras
  6. Focus or magnification control

Jae-Keun Jeong

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Apparatus for aligning semiconductor wafer using mixed light wit

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Auto focus system using twice reflection

Photocopying – Projection printing and copying cameras – Focus or magnification control
Patent

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Profile ID: LFUS-PAI-P-439527

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