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  5. 2D Lens/Lens Module Defect Inspection

2D Lens/Lens Module Defect Inspection

Lens

Items Specification Remark
Min. detection size
12um
Short side length base
Inspecting items
Particle, black spots, white spots, bubbles, scratches, stains, poor coating
Inspecting area: lens top and button surface
Underskill
≤ 0.5% (± 0.3%)
  • Validation quantity: 1000 benchmarks for mass production products
  • Except for missed detection and over-detection due to ±1 pixel size deviation
  • The detection rate is subject to defects visible in the vertical direction.
  • Subject to customer products yield rate up to 90%.
  • Formula of overkilled rate and underkilled detection rate: number of overkilled and underkilled /number of inputs (%)
  • Exclude the gray level between background and defect under 30. 
Overkilled
≤ 1.5% (± 1%)
Cycle Time
0.4 sec/ea.(± 0.1)
- 150ea Lens / Tray
- 20 Trays/Magazine
- MGZ to MGZ
Camera Q'ty
4 Sets (4M Camera)
Mono Camera
Pixel size
5.5um
Pixel resolution 6.11um
Magnification
0.9 X
FOV
12mm x 12mm
Illumination
Inhouse illumination system
Tray Q'ty
20 coating trays/magazine
Subject the discussion with customer

Structure

Lens Module

Items Specification Remark
Min. detection size
12um
Short side length or width basis
Inspecting items
Particle, black spots, white spots, bubbles, scratches, stains, poor coating, poor glue (depending on the characteristics of the glue)
Inspection area: Between the lens, above and below the lens barrel
Underkilled
≤ 0.8% (± 0.2%)
  • Validation quantity: 1000 benchmarks for mass production products
  • Except for missed detection and over-detection due to ±1 pixel size deviation
  • The detection rate is subject to defects visible in the vertical direction.
  • Subject to customer products yield rate up to 90%.
  • Formula of overkilled rate and underkilled detection rate: number of overkilled and underkilled /number of inputs (%)
  • Exclude the gray level between background and defect under 30. 
Overkilled
≤≤ 8% (± 2%)
Cycle Time
2.0sec./ea (± 0.2%)
1000 continuous input benchmarks for mass production products
Camera Q'ty
(Vision system)
4 Sets
0.9X AF camera 3set (4M Camera)
0.5X Fixed focus vision 1set (25M Camera)
Pixel size
5.5um(4M Camera)
2.5um(25M Camera)
Working Distance : 71.5mm
Magnification
0.9X & 0.5X
FOV
12mm x 12mm
Scanning depth range
8mm(±1mm)
Illumination
Inhouse illumination system
Specification and the design could be changed for better performance.
Tray Q'ty
10 trays/magazine

Structure

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