Optical Design, Fabrication and Measurement Associate Professor: Yi-Pai Huang Department of Photonics and Display Institute 2010/02/25

2 教師：黃乙白 TEL : ext Office : 交映樓 516 室 助教：丁志宏 TEL : ext Office : 交映樓 502 室 助理：李穎佳 TEL : ext Office : 交映樓 511 室 Contact information

3 YearsTopicSponsor 2008 High Collimated Backlight 工研院 20093D Projection Screen 揚明光學 2010 Multi-user 3D Backlight 中強光電 D Interactive Scanning Device 友達光電 Final Project

Final Project - 3D Interactive Scanning Device

3D display 3D interactive system Camera based Machine based Optical sensor based Working range limited Accurate 3D coordinates Large volume Inconvenient devices Small volume Mostly for closer range Blind Range Introduction of Interactive System

Introduction - Prior Arts Kinect Xbox 360PlayStation Move BiDi Screen MicrosoftSonyMicrosoftMIT Media Lab Camera basedCamera + DeviceIR CameraCamera Sensor Array 1.Light coding 2.Machine learning 1.Color tracking 2.Motion controller 1.Shadow-based Tracking 1.Depth algorithm 2.Computer vision

Camera based:  Accurate 3D coordinates  Blind in near panel region  Large size Motivation Optical sensor based:  Near working range  Small volume  Low cost Reference: Yi-Pai Huang, 3D Interactive Display with Embedded Optical Sensors,SID 2010 Blind Range

Objective: 3D Virtual Touch With Embedded Sensor Optical Rail 3D Barrier Polarizer Top Substrate Liquid Crystal Embedded Optical Sensor Bottom Substrate Polarizer TFT

Backlight Construction Embedded Optical sensor Top substrate 3D barriers

Detection Concept 8° 11° 14° 17° 20° Backlight 5° Sequential illuminators

Region based algorithm 4-inch panel with embedded optical sensor Region A Intensity –tilt angle curve Region B Region C y: 8.78 cm x: 4.98 cm x Side view of panel Top view of panel

0.2cm Experimental results

13 FHD on 2D/3D -Both of 2D and 3D mode can display FHD image. The image must also be full color. Comfortable of viewing -Including Accommodation-convergence matching, Moiré free, Color-Breakup less, Crosstalk and Ghost image invisible. Freedom of movement -Freely move in 120 o at horizontal with 1-meter movement at vertical. Multi-user -More than 2 users can see 3D images at the same time. Flat-able -Should be as flat as current LCDs. Simple input -Capture system less than 2 cameras, and can real-time process for applications. Functions for Perfect 3D Display

Head tracking system ( Increased viewing range )

W-OLED + Lens Concept : 利用 Lens 將分區的 W-OLED 的光折射到不同的位置，即可達 到分多角度光的效果。 優點 : 結構簡單、 OLED 反應時間短 缺點 : W-OLED 的壽命 Lens 分區的 W-OLED

Dual Barrier Type  Concept : L eyeR eye Backlight Dual Barrier Advantages: Multi-user High accurate Simple structure Disadvantages: Low brightness Low response time

Side-lit LED+lens Advantage LED high luminance and good color rendering All components exist and barrier controlled easily Disadvantage Coupling device design and efficiency (loss) More complex than OLED selective backlight Barrier(select users according to tracking sensor signal ) Coupling device

Scanning LC Lens Scanning LC lens & Sequential BL  Concept : (Moving Tracking) Multi-user potential Sequential BL Advantages: Flat-able Multi-User potential Freedom of movement Single structure Disadvantages: Low LC response Time Low Brightness Complicate Circuit

19 Target of Final Project Multi-Angle Projection Device 1800um (1.8mm) < 1cm ….. Θ <2 o Total project beams =10 3D Virtual Touch