The forward-facing element uses high-powered single-chip RGB sources to give full range colour changing, preferred over individual colour LED chips. The front of the cross is diffused using Lee 129 Heavy Frost filter to reduce the high intensity spots of the LED and give more uniform lighting.
The drop shadow uses an array of single white high-powered wide angle LEDs to create a permanent background improving contrast and lifting the cross from the stonework. Peak power consumption (with all LEDs at full brightness) is just 34W - less than that of a single T8 4ft fluorescent tube.
The cross generally sequences through a rainbow colour change with each step timed at two minutes. Specific colours or sequences can be programmed to coincide with religious events. Reverend Rodger Fox, who lives opposite the church, commented: "It gives a lovely glow into my bedroom and I feel God is always with me."
With a life in excess of 30,000 hours and controlled by a timer and daylight sensor, energy consumption is minimal and long life assured, says Henshaw.
(Lee Baldock)
