Introducing the Light Touch interactive projector (w/ Video)

Jan 11, 2010 by Lin Edwards report

( -- UK-based company Light Blue Optics has introduced an extremely compact projector that converts any flat surface into an interactive touch video screen.

The Light Touch interactive is basically a hand-held computer that runs Windows CE and uses a proprietary holographic laser projection (HLP) system to project a virtual touch screen onto any flat surface. The image projected is only 15 lumens, but remains in focus even at long distances.

Holographic refers to the method Light Blue Optics uses to create two-dimensional images by transforming original images into sets of diffraction patterns that are shown on a micro-display and then illuminated by laser light. Diffraction patterns are used because of their high efficiency, since they direct light to where it is needed rather than indiscriminately.

Multiple diffraction patterns are calculated, with each producing a rough version on the image. The viewer's eye then separates the images from the noise and sees them as a clear video image that is always in focus, even when projected onto a curved surface. The lasers produce vivid and bright image colors, and the wide throw angle produces large (10-inch) images even close to the tiny projector.

The Light Touch system detects interactivity via an integrated infrared system that in effect transforms any surface into a touch screen, and this allows users to run the projector and control applications by touching the image. WiFi connectivity and Bluetooth technology are built-in to allow users to connect to the Internet for multimedia sharing and social networking via the projector.

The laser used in the Light Touch projector is a class 1, which means it is completely eye safe, and the projected images are WVGA (Wide Video Graphics Array), which produces a crisp, auto-focused image. The standard flash memory is 2 GB, but there is a micro SD card slot to upgrade to 32 GB storage. The battery life rating is for two hours.

The projector, the first released product of Blue Light Optics, was demonstrated for the first time on 7 January at the 2010 Consumer Electronics Show (CES) in Las Vegas.

Explore further: Indiegogo project 'Switchmate' lets you run light switch from your phone without rewiring

More information: Light Blue Optics website:

add to favorites email to friend print save as pdf

Related Stories

World's Highest-Resolution Projector

May 26, 2009

If one were to stack 16 of the world's best high-definition projectors side-by-side (and on top of each other), the combined image projected would contain 33 megapixels. This is the resolution achieved by the world's highest-resolution ...

Ericsson developing a 'spider' computer (w/ Video)

Oct 30, 2009

( -- Ericsson has produced a prototype of a portable computer that projects the screen and keyboard, and a mock-up of a "spider" computer that will be small enough to carry in a pocket.

Epson's new 4K panel for 3LCD projectors

Nov 10, 2009

( -- Seiko Epson Corporation has announced the world's first 4K panel for 3LCD (liquid crystal display) projectors. The panel will enable the projectors to produce a bright image of 4096 x 2160 ...

Virtual factory on the tabletop

Dec 03, 2007

Many industrial processes involve reactions in places that are difficult to see directly. A novel tabletop touch screen allows hidden sequences of events to be observed in progress. It can be operated intuitively ...

Laser projector, set-top box win gadget awards

Jan 10, 2010

A pocket-size laser projector and a set-top box which delivers Web content to your television were named among the best products in an annual competition as the Consumer Electronics Show (CES) prepared to ...

Recommended for you

Panoramas for your tablet

Mar 25, 2015

Most people are familiar with the fictional world of 'Star Trek,' in which the characters can use a holodeck to create and interact with virtual worlds. It is possible to recreate a similar effect in the ...

Bound to please: Book-making machines star at French fair

Mar 23, 2015

Chose a PDF file on the screen and five minutes later a book, printed and bound with a proper cover, spits out. It used to be science fiction, but machines that do this are here now and increasingly grabbing the attention ...

User comments : 2

Adjust slider to filter visible comments by rank

Display comments: newest first

Jan 11, 2010
This comment has been removed by a moderator.
not rated yet Jan 11, 2010
vit, yes those screens and keypads are way too small.

But if all you want is just a keypad then that has been out for a couple of years. You can even get a foldaway physical keypad (less space than the projector type).
1 / 5 (1) Jan 13, 2010
Because of the distributed nature of the image information, I would expect that the shadow of a hand stuck between the surface and the emitter would be greatly attenuated. Looks that way in the videos, too, but a little hard to tell to what degree.

Anybody seen this effect up close?
Jan 16, 2010
This comment has been removed by a moderator.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.