LED projector breakthrough claimed! Is it real?

Archived from groups: alt.tv.tech.hdtv (More info?)

Does anyone know about this company? Do they really have a product
ready to go, or is this just another hoax?

http://www.ledsmagazine.com/articles/news/2/4/24

Goldeneye patent enhances brightness of LED systems
18 Apr 2005

Goldeneye Inc. has been granted a patent on a technique that will
enable the use of LEDs in large area projection displays.

Goldeneye, Inc. has announced the issuance of US patent no. 6,869,206
entitled "Illumination systems utilizing highly reflective LEDs and
light recycling to enhance brightness". The patent describes a method
of fabricating high intensity LED-based light sources, enabling the
creation of devices that match the brightness of expensive
ultra-high-pressure arc lamps using low-cost, current-generation LEDs.

In Goldeneye's technology, multiple LEDs are combined in a recycling
cavity where their individual brightness outputs are enhanced.
Normally, the concept of etendue (also known as optical extent or
throughput) states that multiple light sources cannot be combined to
create output that is brighter than any one individual source.

However, unlike blackbody radiators, LEDs can be fabricated with highly
reflective surfaces such that they absorb very little of the light they
emit. Using Goldeneye's recycling optical approach these "white body"
sources can be additively combined. The result is significant radiance
improvement in the output of the source.

The patent describes an LED array placed within a highly reflective
cavity. The LED source has a reflecting emitting surface, and the
optical system is designed to recycle a portion of the emitted light
back to the source and then transmit the remainder of the light to the
output aperture. Under certain conditions, the effective luminance of
the source as well as the output luminance of the optical system can be
higher than the intrinsic luminance of the source in the absence of
recycling, a result that is not predicted by the standard etendue
equations.

"Implementation of the technology behind this and other patents the
company currently has pending will have a major impact on the
projection display market," says Bill Livesay, president of Goldeneye.
"Besides significantly reducing manufacturing and ownership costs,
using LEDs provides for much better color purity than current
arc-lamp-based displays."

A big advantage of using LEDs is a 50 fold increase in service life:
500-2000 hours for arc lamps versus as much as 50,000 to 60,000 hours
for LEDs. And unlike die-based approaches such as resonant cavity LEDs
and laser diodes, Goldeneye's technology is scalable. It also has the
added benefits of spectral averaging and redundancy.

Products that leverage this proprietary technology can be used in a
wide variety of consumer applications, including front and rear
projection TVs, automotive headlights, and general lighting. Presently,
Goldeneye is developing sources capable of generating sufficient
brightness to potentially replace conventional arc lamps found in
current commercial projectors.

Goldeneye describes itself as "a technology foundry" that creates
innovations in optics and the solid-state lighting market. The
company's principals have generated over 50 issued patents in the
fields of micro-optics, displays, semiconductor processing, and
electronic packaging. Founded in 2004, Goldeneye, Inc. has already
accumulated a large and comprehensive IP portfolio, including ten
filings related to solid-state lighting. The company is headquartered
in Carlsbad, California.

-------------------
If this is true it is a tremendous breakthrough. They say it would
reduce manufacturing costs as well as lamp replacement costs. It is
hard for me to imagine that such a complex LED lamp would be cheap to
produce.

IB

Archived from groups: alt.tv.tech.hdtv (More info?)

<inkyblacks@yahoo.com> wrote in message
news:1113887401.872686.276230@f14g2000cwb.googlegroups.com...
> Does anyone know about this company? Do they really have a product
> ready to go, or is this just another hoax?
>
> http://www.ledsmagazine.com/articles/news/2/4/24
>
> Goldeneye patent enhances brightness of LED systems
> 18 Apr 2005
>
> Goldeneye Inc. has been granted a patent on a technique that will
> enable the use of LEDs in large area projection displays.
>
> Goldeneye, Inc. has announced the issuance of US patent no. 6,869,206
> entitled "Illumination systems utilizing highly reflective LEDs and
> light recycling to enhance brightness". The patent describes a method
> of fabricating high intensity LED-based light sources, enabling the
> creation of devices that match the brightness of expensive
> ultra-high-pressure arc lamps using low-cost, current-generation LEDs.
>
> In Goldeneye's technology, multiple LEDs are combined in a recycling
> cavity where their individual brightness outputs are enhanced.
> Normally, the concept of etendue (also known as optical extent or
> throughput) states that multiple light sources cannot be combined to
> create output that is brighter than any one individual source.
>
> However, unlike blackbody radiators, LEDs can be fabricated with highly
> reflective surfaces such that they absorb very little of the light they
> emit. Using Goldeneye's recycling optical approach these "white body"
> sources can be additively combined. The result is significant radiance
> improvement in the output of the source.
>
> The patent describes an LED array placed within a highly reflective
> cavity. The LED source has a reflecting emitting surface, and the
> optical system is designed to recycle a portion of the emitted light
> back to the source and then transmit the remainder of the light to the
> output aperture. Under certain conditions, the effective luminance of
> the source as well as the output luminance of the optical system can be
> higher than the intrinsic luminance of the source in the absence of
> recycling, a result that is not predicted by the standard etendue
> equations.
>
> "Implementation of the technology behind this and other patents the
> company currently has pending will have a major impact on the
> projection display market," says Bill Livesay, president of Goldeneye.
> "Besides significantly reducing manufacturing and ownership costs,
> using LEDs provides for much better color purity than current
> arc-lamp-based displays."
>
> A big advantage of using LEDs is a 50 fold increase in service life:
> 500-2000 hours for arc lamps versus as much as 50,000 to 60,000 hours
> for LEDs. And unlike die-based approaches such as resonant cavity LEDs
> and laser diodes, Goldeneye's technology is scalable. It also has the
> added benefits of spectral averaging and redundancy.
>
> Products that leverage this proprietary technology can be used in a
> wide variety of consumer applications, including front and rear
> projection TVs, automotive headlights, and general lighting. Presently,
> Goldeneye is developing sources capable of generating sufficient
> brightness to potentially replace conventional arc lamps found in
> current commercial projectors.
>
> Goldeneye describes itself as "a technology foundry" that creates
> innovations in optics and the solid-state lighting market. The
> company's principals have generated over 50 issued patents in the
> fields of micro-optics, displays, semiconductor processing, and
> electronic packaging. Founded in 2004, Goldeneye, Inc. has already
> accumulated a large and comprehensive IP portfolio, including ten
> filings related to solid-state lighting. The company is headquartered
> in Carlsbad, California.
>
> If this is true it is a tremendous breakthrough. They say it would
> reduce manufacturing costs as well as lamp replacement costs. It is
> hard for me to imagine that such a complex LED lamp would be cheap to
> produce.
> IB

"Pocket projectors":

http://www.physorg.com/news3000.html

This Mitsubishi model uses Lumileds, made I guess are made by the same
company that's supplying the newer improved-black-level LCD panels.

Fantastic...

Archived from groups: alt.tv.tech.hdtv (More info?)

well, based on the number of buzzwords used in the description... it SHOULD
be a sensation! Hahha

Archived from groups: alt.tv.tech.hdtv (More info?)

On Tue, 19 Apr 2005 08:28:48 -0400, "Richard" <rfeirste at
nycap.rr.com> wrote:

>
>Sony already has LED products but the price is not low enough yet for a
>broad consumer product introduction. In a few years it has been predicted
>that the current single bulb approach will be history. LED technology
>promises a wider color palette and longer life.

And 6 times less energy consumption and corresponding reduction in
heat generated. (2x for LED over halogen efficiency advantage, and
3x for getting rid of wasteful color wheel/filters.).