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Optoelectronics/Displays??

Light pipe operates with board-mounted push-button switches

Posted: 04 Oct 2004 ?? ?Print Version ?Bookmark and Share

Keywords:bivaropto? bivar? light pipe? pblp series?

BivarOpto, the Optoelectronics division of Bivar Inc., released a new light pipe designed to operate with board-mounted push-button switches, enabling non-lighted switch models to perform the same function as similarly mounted lighted push-button switch (LPBS) types, when used in conjunction with surface mounted LED chipsets.

The new PBLP series offers an integral prism design within the light pipe, directing the surface mounted LED light down the center of the light pipe. This new device includes a slide-on base for easy mounting onto industry-standard push-button shafts of through-hole or surface-mounted PCB-mounted switches. By positioning the switch immediately behind a surface-mounted LED chip, the light pipe immediately enables the otherwise non-illuminated switch to become a "lighted push-button switch" unit in effect. According to BivarOpto, this concept significantly reduces the cost multipliers experienced in specifying an LPBS, eliminating the need of the lighted switch itself and additional cost of filters, or other special legends while offering a new, smaller cross- section display/button configuration to designers.

Anthony Vilgiate, Bivar's VP for Strategic Business Development, commented, "The ability to provide such a small button surface, capable of transmitting the brightness and full color of a board-mounted LED to applications requiring a switch control from the front panel, opens new doors to creative panel and indicator status display design."

The PBLP design employs Bivar's high-contrast materials providing a 60 percent improved contrast ratio for light transmission of surface or through-hole mounted LEDs. Featuring the use of a new 94V-O compliant custom polycarbonate compound from GE, the light pipes are water clear in off-state appearance and take full color when in the on state. The PBLP series can also be specified in ultra-high contrast white diffused for additional design freedom.

The PBLP series is priced at 45 cents each in 1,000-piece quantities and is immediately available from stock through Bivar's distributors. Custom sizes and legends are available.





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