Monthly Archives: July 2011

Wavien, Inc. Demonstrates a Low Cost 3D LED Projector Using Proprietary Recycling LED Technology

VALENCIA, Calif., June 15, 2011 /PRNewswire/ — Wavien, Inc. will be demonstrating the latest advances in LED light engine technology with a prototype 3D Projector using its proprietary LED Recycling Technology (RLT™).

Wavien’s low cost 3D projector combines the left and right polarized images from two TFT-LCD panels using a reflective polarizer, and projects the combined images onto a polarization-preserving screen through a single projection lens. The 3D image can then be viewed using low-cost polarizing eyeglasses. This system allows use of a “home-made” polarization-preserving screen, produced with off-the-shelf metallic spray paint, which further reduces the total cost of ownership. Wavien is working with manufacturers in Taiwan for this 3D projector. A 2D version of this low cost LED projector is also available.

A production ready 2D sample and a 3D engineering prototype will be shown at the Wavien booth, #5283, at the InfoComm in Orlando, Florida, from June 15th to 17th. Performance, pricing, and delivery details for these new projectors are now available from Wavien.

“Our goal is to provide a low-cost, maintenance-free 3D projection system for home and classroom uses. Wavien’s RLT technology utilizes a low-cost, street-lamp type of LED, and costs are reduced even further by using large area TFT-LCD panels to simply the light engine architecture. The two-polarization system permits the use of low-cost, passive polarization eyeglasses, instead of expensive LCD shutter glasses. A further innovation is to project the images onto a simple metallic spray painted screen, which is polarization preserving and has high gain,” stated Dr. Kenneth Li, President and CEO of Wavien, Inc., who is also the inventor of the recycling technology. Dr. Li added: “This unique combination of low-cost components makes 3D viewing at home and in classrooms affordable, which is one of the major factors in the widespread adoption of 3D.”

Ron Meritt is president of Olens Technology, based in Pismo Beach, CA.

“Olens Technology is excited to work with Wavien, a global leader in projection technology with the RLT technology,” stated Mr. Meritt, who was featured in many media outlets including the cover story of Forbes Magazine. “We are very optimistic that Olens Technology will be able to introduce this 3D projector as a leading product into the market using Wavien’s technology,” added Mr. Meritt.

About Wavien, Inc.

Wavien, based in Valencia, California, is a technology licensing company developing long-life, high-performance light sources and engine prototypes for the projection and general lighting industries. Wavien currently offers its unique “Dual Paraboloid Reflector” (“DPR”) technology using ultra-high-pressure arc lamps. Wavien has also entered the LED illumination market with its RLT recycling and non-imaging optical technology. These technologies improve lamp life, brightness, and efficiency when teamed with applications in the projection display, fiber optics, entertainment, and general lighting markets.

DPR is a registered trademark of Wavien, Inc. RLT is a trademark of Wavien, Inc.

For more information, please visit http://www.wavien.com or contact the company.

Contact Information:
Harry Farrar
Sales and Marketing
(661) 294-2900 ext. 210

About Olens Technology, Inc.

Olens Technology is a division of Tirem Corp, founded in 1997 in Pismo Beach, CA. The company originally manufactured the first portable video system for vehicles, and within 18 months sales exceeded $200 million annually. Following the success of the mobile video system, the company expanded into many consumer electronic products, including unique projectors and, more recently, 3D and hologram projection devices.

Contact Information:
Ron Meritt
President, Olens Technology
P.O. Box 386
Pismo Beach, California 93448
Office 805-489-3636
Cell 805-459-1131
Skype ron.meritt

Green LED finally bright enough for large projectors

The Osram subsidiary Osram Opto Semiconductors, which is owned by Siemens Industry, is the only manufacturer to offer LED solutions for projectors in every performance class — from home cinema systems with an image diagonal of over 79 inches to tiny units that can be integrated directly into cell phones or MP4 players. Highly efficient lighting is part of the Siemens Environmental Portfolio, which generated around €28 billion in sales for the company in fiscal year 2010.

The brightness of an LED depends to a large extent on the output of the green LED, because green light accounts for more than two thirds of the white light produced in such projectors. The new diode emits 410 lumens of light at a wavelength of 520 nanometers, which is twice as bright as lamps used in the past. This means it is now possible to build systems of multiple LEDs that have a brightness of 2,000 lumens, enough for office projectors with image diagonals of up to several meters. The component is based on the latest chip technology for high-performance LEDs. Blue light is transformed into green light by means of phosphor converters. This allows the developers to achieve twice as much light as with directly generated green light.

Projectors superimpose images in the three primary colors red, green, and blue in rapid succession. Conventional devices use a special halogen lamp behind a rotating color wheel. LED projectors do without a color wheel because the diodes emit red, green, and blue light directly. What’s more, LEDs generate brilliant images with high contrast and high color saturation. They require less power and have a service life of about 30,000 hours, more than seven times as long as conventional lamps. In the past, however, LEDs have not been bright enough for office projectors, which have to supply about 2,000 lumens of light. The brightest pocket projectors now provide between 50 and 100 lumens.

Source: Siemens

LCoS vs DLP LED systems

The most common questions about front projectors center on the different technologies that they use. Which is better? That depends on what you are looking for. In this section will we compare the technologies as they relate to front projection. We will discuss how the technologies work in greater detail in the Learn About The Technologies section.

Digital Light Processing™ (DLP™) — DLP™ is a Texas Instruments technology that uses micro mirrors to project an image. There are three distinct types of DLP™ light engines: three chip; single chip for home theater and single chip for business. We will cover the pros and cons for each.

Three chip DLP™ — Pros:

1. Perfect color accuracy.
2. Good contrast; much greater than film theaters.
3. Good shadow detail.
4. Can provide high brightness compared to the limited brightness of single chip versions.
5. Overall image quality deemed as the best of any type of micro display technology.
6. Same technology as projectors installed in digital theaters.
7. Pure digital technology.

Three chip DLP™ — Cons:

1. Very expensive compared to the other technologies. Prices start at around $20k.
2. Lower contrast than single chip versions.
3. Generally larger and always louder than single chip versions.
4. Lamps usually don’t last as long.

Single chip DLP™ for home theater — Pros:

1. Fantastic color accuracy.
2. The best contrast ratios and shadow detail.
3. Generally very quiet.
4. Very little space between each pixel creates a very smooth image, even when using lower resolution projectors.
5. Best overall image quality available for under $10k.
6. Very few, if any, dead pixels.
7. Light engine failures are very rare so repairs are less costly than other technologies.
8. Technology doesn’t degrade over time. With proper routine maintenance, DLP™ projectors consistently provide just-out-of-the-box performance. (DLP™ is the only technology that makes this claim).
9. Color uniformity is the best of the technologies.

Single chip DLP™ for home theater — Cons:

1. It is more expensive than LCD technologies given comparable projector resolution and brightness.
2. Home theater DLP’s only reach a maximum of 1500 lumens of brightness.
3. On some DLP™ projectors, viewers can detect a color breakup effect called the “rainbow” effect. This rarely occurs with home theater DLP’s.

Single chip DLP™ for business — Pros:

1. Provides higher brightness than home theater DLP’s.
2. Excellent contrast and shadow detail.
3. Generally produces reduced noise levels.
4. Very little space between each pixel creates a very smooth image even when using lower resolution projectors.
5. Very few, if any, dead pixels.
6. Light engine failures are very rare so repairs are less costly than other technologies.
7. Technology doesn’t degrade over time. With proper routine maintenance, DLP™ projectors consistently provide just-out-of-the-box performance. (DLP™ is the only technology that makes this claim).
8. Color uniformity is the best of the technologies.
9. Cheaper to purchase – based on resolution and brightness – than true home theater DLPs.

Single chip DLP™ for business — Cons:

1. Color saturation is not as good as LCD or home theater DLP™ machines.
2. Color separation effect, AKA “rainbow effect,” can be apparent on these projectors and can be distracting to watch, although most people don’t notice the effect.
3. Advanced menu screens for image adjustments are rare in business machines, although some manufacturers do offer them.
4. Most, but not all, business machines won’t offer HDCP enabled digital inputs.
5. These machines are only offered in 4:3 aspect ratios.
6. True 720p resolution projectors not offered.

LCD — LCD or liquid crystal displays are the oldest type of micro display technology used in front projection. Since the only real differences between an LCD projector for home theater and one built for business are the resolution and menu options, we won’t differentiate between the two here.

Pros:

1. Can be very bright even in home theater applications.
2. True high definition models are the least costly of any technologies with 720p models starting at under $2k.
3. Great color saturation.
4. Home theater models are usually feature-rich.
5. 1000 lumen and lower models will usually have long lasting lamps.

Cons:

1. Dead pixels are common.
2. Contrast ratios are lower than those on DLP™ projectors.
3. Shadow detail and absolute black levels fall short of DLP™ powered projectors.
4. Panel convergence problems (where the three LCD panels don’t align properly producing a noticeable color halo around each pixel) are common.
5. LCD panels are organic and lose image quality over time. The less the machine is used each day, the less of a problem this is. Projectors that are used for over eight (8) hours a day can exhibit problems fairly quickly.
6. Color uniformity across the image is lower than that of DLP™ powered projectors.

LCoS — LCoS, or liquid crystal on silicone projectors, came along at about the same time as DLP™ powered projectors and have a much smaller market share than either DLP™ or LCD in the home theater or business machine markets. LCoS technology is also referred to as reflective LCD, while individual manufacturers use their own names. For example, JVC refers to its LCoS light engines as “D-ILA.”

Pros:

1. LCoS resolutions tend to start at SXGA enabling native 720p high definition images to be shown.
2. Like LCD, LCoS machines can be very bright.
3. Offers a very smooth, film-like image due to its pixel structure.
4. Great color saturation and accuracy.

Cons:

1. Can be pricey, although based on resolution, the cost is not much more than that of DLP™ home theater projectors.
2. Dead pixels are more visible than with other technologies and happen as often as with LCD’s.