Audio Visual Technology PART 1

Purpose Of Lesson Part 1 We will discuss the different types of visual screens that have been available in the past and the different types of current models available today.

CATHODE RAY TUBE (CRT) INVENTED IN 1897 BECAME COMMERCIALLY AVAILABLE IN LAST LONG TIME NO MAINTANCE

(CRT) NEGATIVES USES LOTS POWER SCREEN CAN BURN!!! HEAVY LARGE

SCREEN RATIOS BEEN GETTING WIDER AND WIDER WITH TIME. IT IS EASIER FOR YOUR EYES TO MOVE SIDE TO SIDE THAN UP AND DOWN

SCREEN RATIOS BEEN GETTING WIDER AND WIDER WITH TIME.

SUPER WIDE ASPECT THERE ARE NOW SUPER WIDE SCREENS 32:10

SUPER WIDE ASPECT They are curved Very expensive = $ You need nice video card to run them.

LCD, OCD, OLED, Fog, Projector, and Plasma

Liquid Crystal Display (LCD) Doesn’t reflect light, uses less power, can be touch screen Available up 110 inches Used in Laptop screens, touch panels, etc. NEGATIVE Can’t be seen from angle

Plasma Can be Touch Screen Up to 14 feet Truest Black of any monitor Used in TV’s NEGATIVES: Reflects Light, Screens don’t live as long, lots of power, and need more service.

Organic Light-Emitting Diode (OLED) or Organic Crystal Displays (OCD) Can be very thin as little as 3MM thick Can be made flexible, Doesn’t Reflect Light, Visible from side, and uses the least amount of power of any screen Came out in February of 2008 There are now quite a few models on the market, getting bigger, and cheaper by the day

OLED IN THE PAST COUPLE OF YEARS NEARLY HALF OF SCREENS SOLD HAVE BEEN OLED. 77” is $25,000

OLED IN THE PAST COUPLE OF YEARS NEARLY HALF OF SCREENS SOLD HAVE BEEN OLED.

OLED - 4K and 8K UHD Flexible Thin Sheet of Plastic

Future Flexible OLED Screens Flexible Thin Sheet of Plastic

OLED VIDEOS oled-tv/9742-1_ htmlhttp://cnettv.cnet.com/sony-27- oled-tv/9742-1_ html handson-with-transparent- display-of-the-future/ http:// handson-with-transparent- display-of-the-future/ http:// 7311

Projectors Used in Home or Schools Can project image from table top, ceiling, front or behind screen. Cost Relatively Cheap, but have high maintenance costs Can be used in Holographic

Projectors Negatives Bulbs can be $100s of dollars Using a WHITE screen makes Dark Colors such as Black not very BLACK So, it doesn’t work well in high light situations

OLED Screens VIDEOS Flexible Thin Sheet of Plastic

Holographic Screens 3D Holographic Screens Just a thing of Sci-Fi Movies Right This is Star Wars Movie 25 Years Ago

Today There Are Several Commercially Produced Models

Fog Screen Video en/fogscreen_beyond.wmvhttp://wm.esitykset.net/magneetto/fogscre en/fogscreen_beyond.wmv Like all projector screens it doesn’t work well in high lighting. It requires a water line run to it, so it probably wouldn't work well in a home environment.

3D TV Gives 3D effect, however you have to wear the glasses If you don’t the screen is very blurry I think it is a fad

3D TV Manufacture s are pouring tons of money into development In future may work without glasses!!!

WE HAVE DISCUSSED 1.Cathode Ray Tube (CRT) 2.Plasma 3.Liquid Crystal Display (LCD) 4.Organic Crystal Display (OCD) 5.Organic Light Emitting Diode (OLED) 6.Projectors 7.Holographic Screens – Fog Screens 8.3D TV 9.Super Wide Aspect Ratios

END OF PART 1