Opto-Electronics


Lightpipes for PCB surface-mounted LEDs

4 October 2006 Opto-Electronics

VCC's LPX Series lightpipes are designed to provide a method of transmitting the light from a circuit board surface mounted LED to a display panel. In addition, they are capable of blending the colours of new multicolour LEDs. They are available with three display lens shapes and produce up to 160° viewing angle.

Recent technological advances by the LED manufacturers of surface mount LEDs include multichips, increased brightness and lower power usage. Due to their new super small package size, designed for pick-and-place assembly equipment, these LEDs are not suitable for front panel displays.

Current methods of transmitting the light of a surface mount LED on a PCB to a front panel are less than acceptable aesthetically and physically. Lightpipes are typically attached to the PCB by moulded plastic pegs. These are quite fragile and, being attached to the PCB prior to final chassis assembly, care must be exercised to prevent damage. Alignment to the panel cutout during final assembly also causes difficulties.

The LPX Series 4 mm lightpipes are designed for use with both vertical and horizontal surface mount LEDs while their physical attachment is made directly to the display panel. Combining the physical attachment advantage with the fact that the lightpipe is available in 81 lengths, the designer has much freedom in the positioning of the circuit board within the chassis. These features allow for easy board insertion in final assembly or removal for inspection and repair.

Further, the display lens is designed as low profile with fresnel rings in three different styles; round, square and rectangular. The lens will disperse the light up to 160°. The light receiving end of the lightpipe has a concave surface designed to be positioned in front of the horizontal surface-mounted LED or directly over the top of the vertical surface-mounted LED.

The lightpipes are tubular in shape, moulded from an optical grade of acrylic plastic for clarity with highly polished surfaces for optimum light refraction and transmission. The LPX is secured directly to the display panel by means of a retaining clip or grommet.

For more information contact Ian Watson, Mimic Components/Crafts, +27 (0)11 689 5700, [email protected]



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Advanced HMI delivers enhanced durability
Fox Controls Rand Opto-Electronics
This compact touchscreen HMI from IDEC provides essential visualisation and high-performance multitouch control, even in the most space-limited applications.

Read more...
Powerful UVC disinfection
Opto-Electronics
The S3535-H emitter generates an output power of more than 150 mW per chip at 265 nm, providing the strongest germicidal effect currently available on the market.

Read more...
Front panels for electronics
Seven Labs Technology Opto-Electronics
In the world of electronics, the significance of a well-designed front panel cannot be overstated as it serves not only as the first point of interaction between users and devices, but also plays a crucial role in the functionality and aesthetics of electronic products.

Read more...
Cree: Illuminating the future of LED technology
Altron Arrow Editor's Choice Opto-Electronics
As a pioneer in this field, Cree LED has been instrumental in shaping the LED landscape, driving innovation and performance in this sector.

Read more...
New optical sensors for object detection
Opto-Electronics
A special feature of the Würth Elektronik sensors is that they filter out visible light up to 800 nm, rather than just up to 700 nm, like many other sensors of this type.

Read more...
HTML5 WebPanel with Linux, Android, or AutomationBrowser
Vepac Electronics Opto-Electronics
Having a front protection rating of IP65, and additional features such as Wi-Fi, Bluetooth, USB, RS232 integrated, these panels are an excellent solution for most industrial applications.

Read more...
Laser control for smart glasses
Opto-Electronics
TDK has developed the world’s first full-colour laser control device for 4K smart glasses using lithium niobate thin film.

Read more...
PVision introduces interactive PoS to South Africa
Opto-Electronics
Recently, PVision partnered with Nexmosphere, a company that transforms any digital display into an engaging experience using sensors and controls, to bring the next level of point-of-sale digital displays to consumers.

Read more...
InGaAs and SWIR surveillance
Opto-Electronics
Sensing in the SWIR range (wavelengths from 0,9 to 1,7 microns) has only recently been made practical by the development of Indium Gallium Arsenide (InGaAs) sensors.

Read more...
Touchscreen interfaces for industrial applications
Rugged Interconnect Technologies Opto-Electronics
Being protected from water and dust ingress, scratches, abrasions, and metallic dust makes them suitable for installation into harsh environments.

Read more...