Good Reasons for CMOS Cameras Semicon, Dresden October 2015 René von Fintel, Head of Product Management
Let s do the right step in your vision system 2
Agenda Coming next I. Latest Technology and News II. Good Reasons for CMOS based Cameras a. because of speed b. because of image quality c. because of resolution d. because of cost improvement Date Author 3
Agenda Coming next I. Latest Technology and News II. Good Reasons for CMOS based Cameras a. because of speed b. because of image quality c. because of resolution d. because of cost improvement Date Author 4
CCD & CMOS Two Image Sensor Technologies CCD was long time seen as more suitable for vision systems because of global shutter function and a bigger sensitive pixel area Today CMOS sensors deliver global shutter and a higher quantum efficiency too, additionally they can deliver much higher frame rates they do not have any Blooming or Smearing artefacts due to mass market production their cost structure is significantly better Sony announced CCD discontinuation for 2020* 5
The CCD to CMOS Trend 80.00% 70.00% 60.00% 50.00% 40.00% CCD CMOS 30.00% 20.00% 10.00% 0.00% 2012 2013 2014 6
Featuring the Latest Sensor Technology by Sony Sony IMX 174 and following IMX Long investment in first global shutter pixel technology: Pregius Sony s proven quality and long term experience in image sensors Highest dynamic range Highest sensitivity Frame rates up to full USB 3.0 bandwidth 7
Sony IMX 174 Highest Sensitivity and Best Image Quality New CMOS sensor benchmark CCD sensor Sony IMX 174* Sony ICX 285* QE (at 500nm) 70% 57% SNR max. db 45 43 Dynamic Range db 73 68 Saturation 32000e- 17000e- Temp. Dark Noise 6,6e- 8e- Framerate 155fps 30fps (overclocked) * Values bases on Basler aca1920-155um and sca1400-17gm 8
Featuring the Latest Sensor Technology by ON Semiconductor ON Semiconductor built up a strong image sensor division by acquiring: Truesense (former Kodak sensors) and Aptina ON Semiconductor launched fast high quality CMOS sensors: Newest global shutter pixel technology Complete range from VGA to 5MP Highest frame rates The python Series! 9
ON PYTHON Series Sensitivity and Image Quality ON Semiconductor 5MP CMOS Sensor Very Popular 5MP CCD Sensor PYTHON 5000* Sony ICX625 QE (at 500nm) 58% 47% SNR max. db 39 38 Dynamic Range db 58 54 Saturation ~8300e- 7000e- Temp. Dark Noise 10e- 13e- Framerate 60fps 15fps * All values preliminary and based on Basler internal EMVA measurements 10
Agenda Coming next I. Latest Technology and News II. Good Reasons for CMOS based Cameras a. because of speed b. because of image quality c. because of resolution d. because of cost improvement Date Author 11
Because of Speed Full Usage of Mainstream Interfaces USB 3.0 and GigE CMOS VGA: 750fps! CMOS XGA -500fps! CMOS 1.3MP- 200fps! CCD VGA CMOS 2MP 150fps CCD 1.3MP CCD 2MP CMOS 5MP 60fps 12
Because of Speed Who Can Benefit? Sample applications which need higher frame rates and global shutter for performance enhancement: 1. AOI in electronics incl. PCB inspection by less inspection time 2. Laboratory Automation by less time to deliver analyzing results 3. ITS speed enforcement by more accuracy for fast moving vehicles Use USB 3.0 or GigE to save cost for frame grabber e.g. 5MP at 60fps! 13
Benefits Through Speed Increase Factory Traffic (ITS) Medical / Life Sciences 14
Agenda Coming next I. Latest Technology and News II. Good Reasons for CMOS based Cameras a. because of speed b. because of image quality c. because of resolution d. because of cost improvement Date Author 15
Because of Image Quality Sensitivity enables: good results in low light conditions Sony CCD ICX 274 Sony CMOS IMX 174 * All same conditions, at 850nm 16
Because of Image Quality Higher dynamic range means: Good results in difficult light situations * CCD KAI04050* * Basler ava2300-25gm 17
Because of Image Quality Higher dynamic range means: Good results in difficult light situations * Bright lights do not overexposure darker parts in the image, also no Blooming or Smearing Sony IMX 174* Clear details and contrast between different bright and dark objects Additionally: Very good sensitivity of a sensor leads to less noise and higher visibility * Basler aca1920-155um 18
Agenda Coming next I. Latest Technology and News II. Good Reasons for CMOS based Cameras a. because of speed b. because of image quality c. because of resolution d. because of cost improvement Date Author 19
Because of Resolution ITS example: Multiple lanes with one camera in a tolling application Width of lane =2x 2,5m Width of number plate: 0,4m Necessary pixel per plate: 200px 20
Because of Resolution 21
Because of Resolution Necessary resolution =5m/0,4m* 200px =2500px -> 5MP resolution necessary -> global shutter because of vehicle movement e.g. Basler ace USB 3.0 or GigE: aca2500-60um or aca2500-20um 22
Because of Resolution Basler Camera Portfolio with C-Mount VGA XGA 1.3MP 2MP 4MP 5MP 10MP 14MP Rolling shutter Global Shutter In many applications rolling shutter can be a good choice (cost efficiency). Also keep attention on lenses: C-mount is in most cases the best match between price and performance! 23
Agenda Coming next I. Latest Technology and News II. Good Reasons for CMOS based Cameras a. because of speed b. because of image quality c. because of resolution d. because of cost improvement Date Author 24
CMOS GS CCD CCD 5MP CMOS GS Because of Cost Reduction Massive reduction in cost structure, performance increase on the other hand Example: 5MP CCD camera vs. new 5MP CMOS global shutter 60 fps ~ 1.500 ~700 15 fps Camera Price Frame Rate 25
Do you want to do a CCD step? a CMOS step? 26
Questions & Answers Rene.vonfintel@baslerweb.com Phone: +49 4102 463 332