Is Blu Ray Worth The Money?

Do you desire for the ultimate high definition experience? Do you want to bring your favorite movies to life with extremely crisp pictures and greater surround sound? Well, now you can, thanks to Blu-ray technology. Blu-ray technology was developed to record, rewrite and playback high definition video (HD).

Blu-ray, also known as Blu-ray Disc (BD), is the name given to the next generation in optical disc formats. It was jointly developed by the Blu-ray Disc Association (BDA). While current optical disc technologies such as the DVD and standard CD rely on a red laser to read and write data, Blu-ray uses a blue-violet laser instead.

Blu-ray is currently being supported by 200 of the world’s leading electronics, personal computer, gaming, music and recording media companies. All Hollywood studios are supporting this format as the new HD format, and countless other smaller studios as well.

Many studios have already announced that they will be releasing feature films on the Blu-ray disc day-and-date with DVD, including a continuous array of catalog titles every month, as Blu-ray discs can fit a lot more data compared to CDs and DVDS, even though they are the same size. A single layer Blu-ray disc can store 25GB, while a dual layer stores up to 50GB.

An internet connection is not required to play Blu-ray movies, but it is required for value-added services, such as downloading new extras, watching recent movie trailers, web browsing and etc. It will also be required when authorizing managed copies of Blu-ray movies that can be transferred on the home network.

So why should you get a Blu-ray? The answer is simple, High Definition Television (HDTV). If you’ve seen high definition video on a HDTV before, then you will know how crisp and sharp the pictures are and how vivid the colors are. In fact, HD offers 5 times more detail compared to the standard definition (SD).

Blu-ray devices can vary in price from $120 to $500, but you can always buy them wholesale and save a large amount of cash. This would be the safest option if you want to purchase Blu-ray, since you will not be taking a big gamble with your hard earned cash.


http://www.kelseypub.com/blog/artsentertainment/2009-04-05/is-blu-ray-worth-the-money

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Stable 405-, 35-mW Blue-Violet Laser Diode

Products, a UK optoelectronics device manufacturer and laser diode specialist, has introduced a lead-free, blue-violet wavelength (405 nm) laser diode from Sanyo. The Sanyo DL-5146-152 405-nm, 35-mW CW (50-mW pulsed) laser diode incorporates an internal monitor photodiode that can be used to accurately stabilize and control optical output power. Ideal for applications such as biomedical instrumentation, medical imaging, fluorescence sensing, spectroscopy and microscopy, the DL-5146-152 was also developed for use in DVD and other emerging technologies. Supplied in a 5.6-mm package with M-type common cathode pin configuration, the Sanyo DL-5146-152 laser diode has a low threshold current of 38 mA, typical operating current of 75 mA, operating voltage of 5.6 V (higher than conventional lasers), threshold voltage of 4.8 V, monitoring output current of 0.2 mA, laser reverse voltage of 2 V and differential efficiency of 0.9 mW/mA at a visible wavelength of 405 nm. The operating temperature range is 0 to 60 degrees C. Virtually all Sanyo laser diodes are now RoHS compliant.

http://www.photonics.com/Content/ReadArticle.aspx?ArticleID=24500