4 April 2007Enclosures, Racks, Cabinets & Panel Products
VCC's new CMS Series lenses are designed to provide a means of protecting equipment from both drip or splash conditions, while displaying panel or circuit board mounted LEDs. Traditional methods of moisture sealing have been with bulky military style indicator lights requiring O-rings, nuts and washers. While effective, it does not provide aesthetics desired today. As a result, engineers have to design elaborate display panel windows with special gaskets.
The new CMS Series low-profile lens is equipped with a moisture sealing gasket that provides an effective seal against splash and drip conditions. In addition to water tests, the manufacturer says the lens and retaining systems were tested up to 6 g of shock and from 0 to 2000 Hz of vibration. Operating temperature tests from -40 to 85°C and a UV test were also performed. The CMS Series lens and the retaining systems used exceeded all test criteria.
The CMS Series consists of button-type lenses designed for mounting 5 mm LEDs. These lenses have a smooth, clean look with a convex surface protruding only 2 mm above the panel. This minimises the potential problem of snagging, interference or physical damage. To install, the lens is inserted through a panel hole; a retaining ring is pressed onto the back of the lens, compressing the seal between the panel and the lens. This allows PCB-mounted LEDs to be moved easily in or out of the lens. The circuit board is now completely independent of the display panel, simplifying its installation or removal for assembly or repair.
The CMS lenses greatly increase the aesthetics of the display panel. With their use, the viewing angle of a 5 mm LED is increased considerably. The low-profile design enhances the light output of the LED by reducing the ambient light effect upon the lens. Use of the lens with a non-diffused LED increases the viewing angle from 35° up to 180° (with a diffused LED, from 90° to 180°).
The CMS Series low-profile, button-type lenses are constructed of optical quality, UL listed, polycarbonate plastic in six colours: red, amber, green, yellow, blue and water clear. The seal is a medical-grade 40 durometor thermoplastic material.
For more information contact Ian Watson, Mimic Components/Crafts, +27 (0) 11 689 5700, [email protected]
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