UMA / PRODUCTS / Lens MTF Tester
DSC501S

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DSC501S system is developed for DSC lens inspection; the optical design is Orthographic Projection.。Automatically MTF inspection design through customized tray design and auto-centering via motor XY table that can effectively reduce human source and the cycle time of lens load/unload.
Measurement principle is based on ISO12233 and using digitalized image process to provide promptly, accuracy and reliable MTF (SFR) test for optical inspection.
 
Features
  • The maximum test points are 97 points which are the same effect as 49 CCDs in back projector system that provide a relatively cheap and complete test solution.
  • Test Chart costs low and has high flexibility.
  • Color Sensor provides chromatic aberration test.

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Item Contents
MTF R、G、B、W Channel
97 Test Points
Auto grading from A to E by MTF data
DOF Deep of Focus
FBL Flange Back Focal Length
TV Distortion  
Shading  
Magnification  
E.F.L. Effective Focal Length (working)
Through Focus  
Focus Tilt  
Field Curve  
Lens Compare Auto comparing and analyzing two Through Focus curve
COF Cutoff Frequency
TVL TV Line (2*COF*Sensor Height)
All Frequency Spatial Frequency Response

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Inspection Contents
Cycle Time 5M:8 sec ( Include tray moving and centering)
21M:11 secs ( Include tray moving and centering )
MTF Repeatability(<100lp/mm)
(Scan Step≦ 0.004mm)
10pcs Samples to repeat in/out for 5 times(not load/unload Tray and lens)
center≦3;off center≦4:
MTF Difference Between Machines MTF+/-5(<100lp/mm)
Auto Centering Software will adjust automatically when test image is off center.
Z Axis Precision Resolution=0.002mm
Locating Precision=0.004 mm
Test Chart Size 722mm* 531mm
Total Track 400mm (FOV:950 Diagonal)
FBL Limit 0.35mm ( C.G 0.2mm)
0.45mm ( C.G 0.3mm)
0.55mm (C.G 0.4mm)
Image Sensor 5M Sensor Size : 5.7mm*4.28mm(1/2.5”)
Pixel Size: 2.2um*2.2um
21M Sensor Size : 5.985mm*4.497mm(1/2.4”)
Pixel Size: 1.12um*1.12um
Light Source LED Back Light
Available Space of Tray 100mm * 100mm
Machine Size 1220mm(L)*71360mm(W)*1990mm(H) including indicator.
Operation Height: 840mm
Weight 150KG
Power Requirement AC220V、50/60 Hz 、1200W
Operation Software Windows 7