CONTENTS:: Introduction Why optical sensor Working principle Sensor details Classification Comparison between two type Sensor type Block diagram Application Conclusion Reference

2.  Inroduction
 Why optical sensor
 Working principle
 Sensor details
 Classification
 Comparition between two type
 Sensor type
 Block diagram
 Application
 Conclution
 Reference

13.  Optical sensor are uesd to measure title
angle.
 LED and LASER emitter are used.
 LASER is used more than LED.
 Sensor must be mounted at a reliable
distance from the ground.

14.  IEEE
 WEKIPEDIA
 LINKIN
 SLIDESHARE