PICO PROJECTORS

Presented byAnjitha C SRollno-14S7 cs1

CONTENTSIntroduction to projectorsWhat is a Pico projector?How do Pico projectors work?Pico projector types ApplicationsConclusionReference

Introduction A projector or image projector is an optical device that projects an

image (or moving image) onto a surface , commonly a projection screen.

The first known record of what might portray the idea of projecting an image on a surface is a drawing by Johannes de Fontana from 1420.

In the 17th century , the first image projector device called “magic lantern” was developed.

HIST

ORY O

F PI

CO P

ROJE

CTOR

2003:Concept introduced by Explay

2006:1St public showcase by Digislide

2008:Optoma launched “world first” pico projector,PK101(DLP)-AAXA launched P1 Jr(LCoS).

2009:Most picoProjectorsStill widelyCriticized forHavingInsufficientBrightness.

2010:-AAXA launchedPico L1(LSP)-MicrovisionLaunched 1st

Commercial LSPProjector,SHOWWX.

What is a Pico projector?A pico projector is a small hardware device designed to project

content from a smartphone , camera , tablet , notebook or memory device onto a wall or other flat surface.

Pico projector use either an LED or laser light source which effectively eliminates the need for lamp replacement over the useful life of a pico.

Pico projectors are tiny battery powered projectors-as small as a mobile phone-or even smaller : these projectors can even embedded inside phones or digital cameras.

Pico projectors are small , but they can show large displays (sometimes up to 100”).While great for mobility and content sharing , pico projectors offer low brightness and resolution compared to larger projectors.

They were introduced as a concept only in 2003 by Explay , they went into production only in late 2008.

They are now estimated to be selling in the millions all over the world and have biggies like Asus , Acer , 3M and more making products as well.

PICO PROJECTOR TECHNOLOGIES

Technology

Key features

Advantages

Disadvantages

DLP

Reflective imaging technology using micro mirror.

RGB color delivered sequentially.

Compact & small size. High contrast. No color degradation.

Rainbow effect. Sharp pixel edges.

LCoS

Reflective imaging technology using liquid crystal.

RGB colors delivered simultaneously.

High resolution. No rainbow effect. Smooth pixel edges.

Larger size. Potential color

degradation.

LBS

Image scanning technology using directed laser beams.

RGB color delivered simultaneously.

Focus free Low power

consumption. Small size. Laser is expensive. Speckle. Eye safety.

How do pico projectors work?There are 3 major technologies- DLP , LCoS and Laser beam-steering(LBS)

which power pico projectors.

DLP(Digital Light Processing)Created by Texas Instruments.It is a technology that basically involves using tiny mirrors on a chip that

directs light from a white light source.Each tiny mirror controls a pixel on the target picture , and depending on

how long it’s on , the target pixel gets brighter or dimmer , since it has only on and off states.

Between the light source and the mirrors , is a color wheel that splits light into the three primary colors(red , green , blue) and each mirror controls all three light beams for its designated pixel.

LCoS(Liquid Crystal on Silicon)An LCoS projector uses a small liquid-crystal display(LCD) to control

how much light each pixel gets.There are two basic designs to get color:* Color Filter(CF LCoS):-which uses 3 subpixels with the primary

colors to create finished images.* Field Sequential Color(FSC-LCoS):-which uses a dynamic color filter

and faster LCD which refreshes the colors rapidly.The light source is white light based- either LED or diffused laser.

MECHANISM OF LCoS

The lamp creates a beam of white light.The beam passes through a condenser lens that focuses and directs the light. The white light is separated into red ,green and blue light by a polarizing

beam splitter.Then beams of colored light simultaneously come into contact with one of the three LCoS micro devices.The reflected light from the micro devices passes through a prism that combines the light.Prism directs the light-which now creates a full color image into a projection lens, which magnifies the image and displays it on the screen.

Laser beam steering(LBS) LBS projectors are different , creating the image one pixel at a time using a directed laser beam.

If we scan the image fast enough(usually over 60hz) , we don’t notice this pixel-by-pixel design.

Micro vision is currently the only company with commercialized LBS projectors and embedded modules.

Advantages to LBS over DLP and LCoS:- Focus free. Low power consumption. Small size.

Disadvantages to lasers:- Laser is expensive. Speckle: a random intensity pattern produced by the mutual interference of a set of wave fronts. Eye safety concerns.

Pico projector typesPico projectors are not limited to just being miniature projectors ,

they are also sometimes embedded in other devices ,or devices on their own , that work in tandem to create something of a portable media device.

Base on size , power and devices required , there are a few types of pico projectors

Standalone: Simple pico projectors that work by themselves and required input to display images .They are mostly self powered by batteries.

Embedded: Pico projectors that are embedded with other mobile devices and derive their power and input from them.

Media player: Pico projectors that have onboard storage and minimal processing power ,as well as external storage support that can be used as media devices for playback independently.

USB Projector: Pico projectors that use USB for both power and input.

Stand aloneEmbedded

USB Media player

Applications Cicret smart BraceletA bracelet wearable that can project a touch-controlled screen onto our

arm.Cicret uses a Pico projector to throw your mobile’s screen into your arm.

It features eight proximity sensors which the bracelet uses to detect your finger position so as to feedback controls.

It features its own processor ,storage ,vibration ,feedback , Wi-Fi and Bluetooth connectivity as well as the sensors and projector.

Smart watches with Pico projectorIt allows project an image with high quality graphics and brightness.The watch doesn’t have any button,except of one touch sensitive button,with which you can manipulate the projection.

Stand alone Pico projectors3M Mpro 120 ProjectorOptoma Pico PK -101Ever Win EW 1000Optoma Pico Projectors PK201 and PK301

Mobile phone Pico ProjectorsSamsung i8520 GalaxyLG expo Projector PhoneNTT DoCoMo F-04B

Camera/Camcorder Pico ProjectorsNikon Coolpix S1000pjSony HDR-PJ50VGE PJ1 projector camera

Gaming

Hand Gesture RecognitionSixth SenseOmnitouch

3D Pico-projection3D prototype pico projector

BUSSINESS OPPORTUNITIESDue to improvement of components, pico projectors can be integrated

into :Gaming application Eg. Integrated into game consoleHand gesture recognition Eg. Virtual keyboardComputing devices3D imaging devicesToy

conclusion Pico projector is an emerging technology that applies the use of an image

projector in a handheld device. They take a number of formats that work in various ways .What they all have

in common is that they are extremely compact and designed to take the place of conventional bulky projectors for presentations and media viewing.

For interactive presentations, a pico projector can enable control of a computer , working in conjunction with a laser pointer, a webcam and an image processing application.

In the near future, we might completely abandon full size projectors if pico projector keep getting powerful.

reference• Handheld projector-Wikipedia, the free encyclopedia http://en.m.Wikipedia.org/wiki/Pico Projector• Introduction to Pico Projectors www.picoprojector-info.com• Introduction to touch projector technology-IJRET paper• The cicret bracelet https://cicret.com/wordpress/• Rainbow effect www.hometheaterreview.com• Pico projector market analysis www.hexaresearch.com• What is LBS www.mpwreviews.com• www.google.co.in

Thank you