The MARTHA series from LEDiL, are a family of round LED lenses with a diameter of 50 mm. These multi-lens arrays are designed for use with three LEDs. They have a clear or diffused lens and offer a range of beam types from a spot to wide angle. MARTHA lenses direct the light from an LED light source through the lens to achieve the desired beam emission type with a uniform output.
Made using an optical grade PMMA, the MARTHA lenses offer a high UV and temperature resistance. They fasten into place using positioning pins and glue.
MARTHA lenses have been designed and optimised for use with a variety of LEDs. Due to the rapidly changing nature of LED products customers are strongly advised to consult the latest manufacturer data for compatible LEDs.
The viewing angle produced (the full angle measured at the half peak luminous intensity value) will vary depending on the chip size, colour and position of the LED.