How DLP™ Works
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Mirror -12 deg
Mirror +12 deg
Hinge Yoke CMOS Substrate
Source:TI
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投影機工作原理基本介紹
陳科順 Al Chen
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常見投影機種類及架構
三片式穿透式液晶投影機（LCD）
反射式LCoS 投影機(LCoS)
反射式DLP投影機（DMD）
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LVPS
380VDC
Motor Drive
Ballast
Lam p
Integrator Rod
Illumination Optics
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關鍵零件組介紹
Optical – DMD,Lamp,Optical Engine
Power Supply – LVPS,Ballast
Video Sources
Graphic Sources
NTSC/PAL/SECAM,HDTV
Up to UXGA
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單片或DLP投影機投影原理
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投影機系統內部結構
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Power Supply
LVPS – Low Voltage Power Supplier
EMI filter
PFC –功率因數之調整 AC/ DC DC/DC
Ballast
Ignite Lamp Provide Constant Power Synchronize with DMD
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投影機工作原理方塊圖
Projection Lens Signals Main Board TI Formatter Board DMD 12V/ 5V/ 3.3V
CW INDEX CW CNIRL
Display Image
Power
Parabolic Lamp /Elliptical Lamp
Key Requirements of Lamp
Brightness – Power & Arc–Gap
Maintenance Non–Flickering
Lamp Supplier
OSRAM,Philips,Phoenix,Ushio,……
Thermal – Fan Electrical – Main Board,TI Formatter Board
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DLP™ DMD-ProvidingHow the image
Works
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Projection Lens
Brightness FOFO Contrast Ratio ANSI Contrast Ratio Uniformity Volume Weight Audible Noise Lamp Life Connectors
Fixed / Zoom
2000ANSI lumens …… 1800：1 1000：1 ≧ 75% WXLXH <4lbs <35 dB(A ) 2000 hours DVI , VGA ,USB……
Optical EngineCW WT41 M2 L2 M1 DMD Relay L1
Lamp UVIR
L3 Rod
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Lamp-Providing light
Lamp Classification
AC Lamp / DC Lamp
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Thermal
Fan Classification
Axial Fan – 用於冷卻整個系統 Blower Fan – 用於冷卻 Lamp Burner
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三片式穿透式液晶投影機（LCD）
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反射式LCoS 投影機(LCoS)
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System Requirements
Resolution SVGA(800*600)/XGA(1024*768)/SXGA+(1400*1050)