Tag Archives: slim RPTV

Publication

SLIM LASER TV PRESENTED AT SID MID EUROPE JENA

SID 2008

Micro Display based Rear projection TV (RPTV) offers Full HD and potentially lower cost than LCD and PDP for large screen size. Today millions of RPTV’s sold in the market do not fit customer need in terms of form factor and the limited life time of the lamp. Slimmer and low chin cabinets coupled with Laser or semiconductor long life light sources enable this technology to compete against LCD or PDP panels for larger screens above 56 inch.

We’ve developed several generations of slim RPTV optical engines for either UHP or Led based projection systems. In this paper, we present the latest generation of the slim optical engines that should drastically change the look of RPTV’s with a form factor close to that of flat panel displays. We also combine this slim feature with a Laser based projection system. A technical description of the optical system used as design results will be discussed.

Download Full Publication Here:

Slim_Laser_TV__SID_MID_Europe_Jena_2008

Publication

SPACE VARIANT RETARDER PRESENTED AT SID LOS ANGELES

SID 2008

Rear Projection TV (RPTV) offers low cost and high definition images, but suffers from inadequate form factor for the cabinet design. Slim RPTV design with small depth and low chin (distance from stand to image lower edge) are available and offer a second chance for RPTV to compete in the battle of flat screen displays.

For slim RPTV with a low-cost, refractive Fresnel screen, the angle of incidence of the light beam reaches 70° and induces large Fresnel losses. In order to correct this issue and to increase brightness uniformity and light flux, we designed a space variant retarder (SVR) to be located in the imaging arm of the Slim RPTV. This paper describes the concept and the experimental results.

Download Full Publication Here:

Space_Variant_Retarder__SID_2008

Publication

ULTRA WIDE ANGLE OPTICAL SYSTEM FOR LASER TV AND SHORT THROW DISTANCE FRONT PROJECTOR

IDW 2008

Micro Display based (Rear & Front) projectors in general offer HD and are lower cost than LCD and PDP for large screen size. Current non slim RPTV sold in the market do not fit customer needs in terms of form factor and the limited life time of the lamp. Slim and low chin cabinets using Laser sources (Laser TV) enable this technology to compete against LCD or PDP panels for larger screens above 60 inch.

On the other hand, Short Throw Distance front projection is an emerging market. It allows to project a large image with a projection system located only around two feet from the screen. This technique offers new products for projector market for several applications like Home Video Education and Simulators.

Both Slim RPTV and Short Throw Distance projectors need a wide angle projection system with low cost and high performance optical components.

We’ve developed several generations of wide angle optical engines using either UHP or Laser sources. In this paper, we present the latest generation of this optical engine that should drastically change the look of RP TV’s with a form factor close to that of a flat panel. The system could also be used for Short Throw Distance to display bright images on large screen with a projector located near the screen. A technical description of the optical system used on both applications and design results will be discussed.

Download Full Publication Here:

ultra-wide-angle-projector-optinvent