the LED signals were more difficult for them to discern based only on brightness as the visual indicator
The new product features the removal of the AC/DC converter and consequently the optimized form factor. The company claims that this type of solution increases reliability by removing many of the components that cause early lifetime failure of other fluorescent replacement solutions. In particular, the design also provides more flexibility and space to work inside the fixture since the large ballast (power supply) does not have to be accommodated.
Prof Ochiai starts to study LED application in 2003, when they first began to be used in traffic lights in preference to regular light bulbs. Sources has shown that colour-blindness affects around 8 per cent of males and 0.5 per cent of females, with most people with the condition experiencing problems differentiating between red and green. As a result , Colour-blind drivers reported that the LED signals were more difficult for them to discern based only on brightness as the visual indicator.
To solve this problem, Prof Ochiai has worked with lighting manufacturer Koito Electric Industries Ltd., to incorporate blue LEDs with four times the brightness of the other diodes in the shape of a cross through the red lamp.
Prof Ochiai starts to study LED application in 2003, when they first began to be used in traffic lights in preference to regular light bulbs. Sources has shown that colour-blindness affects around 8 per cent of males and 0.5 per cent of females, with most people with the condition experiencing problems differentiating between red and green. As a result , Colour-blind drivers reported that the LED signals were more difficult for them to discern based only on brightness as the visual indicator.
To solve this problem, Prof Ochiai has worked with lighting manufacturer Koito Electric Industries Ltd., to incorporate blue LEDs with four times the brightness of the other diodes in the shape of a cross through the red lamp.
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