LED News Thread

[LeeROI]

 

[hempfield]

Already old, but this might be interesting :

Optogan Announces the Scalable World Class 500W LED Lighting Module X10

Optogan will present its new high power Chip-on-Board module, X10, which is based on the vision of scalability and lean processing for luminaire manufacturing at the embeddedworld 2012 on February 28, 2012 at 3.30 pm. The 50 segment modular system covers 10 to 500W at about 100lm/W.

The X10 is a COB-block, consisting of 50 segments, can be easily divided into LED elements of smaller sizes and power, and each of them can be used in separate light fittings. The smallest segment of Optogan´s X10 consists of a 1cm² ceramic board and consumes 10W (1A, 10V), with efficacy levels already exceeding 100lm/W.

The connections of the sub-modules are opened, where required, either by industrial means, or a simple mechanical operation. Due to various sizes and forms of the elements, they can be used in halogen lamp analogues, light fittings, fixtures with reflectors, as well as in industrial or street lights. The ceramic base and product material selection is based on long life performance by design.

“X10 represents Optogan’s new flagship, offering modular solutions, economical and simple to use, for that additional degree of freedom in lighting design. Coupled with state of the art module efficiency over 100lm/W, the X10 provides our clients the maximum possible variety in steps of 10W reaching up to 500W”, says Markus Zeiler General Manager of Business Unit International at Optogan GmbH in Germany.

 

[GP73LPC]

great idea Vuk !!!!

subbed

 

[hempfield]

Not new, but a very interesting idea : http://www.ceramtec.com/news/id/6/

I wonder how much a 100W ceramic heatsink can cost ?

 

[medmaker420]

nice

interesting indeed brother

 

[WeedIsGod]

^^^ Cool. That will be insanely expensive, but I like their attempt at lowering the junction temperature. Most of the time people focus on mitigating heat that's two to three times removed from the chip junction. Getting as close as possible to directly controlling Tj seems like the right approach and could be somewhat of a breakthrough for LED efficiency and L70, on top of their purported benefits of the technology. I dig it.

 

[hempfield]

Not quite in news section, but I recently discovered this website : http://www.ledcoolers.com/

Extremely useful especially for high power DIY projects (and not only).

 

[hempfield]

Cree does it again!

Cree does it again!

http://www.cree.com/News-and-Events/Cree-News/Press-Releases/2014/March/300LPW-LED-barrier

Cree reports that the LED efficacy was measured at 303 lumens per watt, at a correlated color temperature of 5150 K and 350 mA. Standard room temperature was used to achieve the results.

 

[morgandecaptain]

That's why I run all Cree except for a couple small specialty lights like 730 nm and 660 nm.

 

[a6grow]

Two interesting bits of news I saw on the web:

From a Wired article:
"SPARC’s production director, Robby Flannery, who holds a PhD in plant biology, says he may have figured out a way for his plants to have their buds and gorge on light too. To a plant, the absence of light in the red spectrum signals night. So by eliminating red light 12 hours a day while continuing to shine blue light, SPARC should be able to create plants that still produce buds while constantly absorbing light. “You can keep driving photosynthesis and trick them into thinking it’s nighttime,” he says. Flannery is setting up the A/B test now and plans to publish an academic paper in conjunction with the University of California–Davis later this year."

LED controller to simulate sunrise/sunset and moon phases.

 

[MarCogollo]

Not quite in news section, but I recently discovered this website : http://www.ledcoolers.com/

Extremely useful especially for high power DIY projects (and not only).

but where in the led panel would be mounted ? I would like to see examples