
142 Solid-State Light Sources
4.8.2 General Lighting: No Visual Contact with the Source
There are some applications in general lighting where LEDs are preferred for
various reasons, which include the following:
• Dental treatments/bleaching (blue color, size, long lifetime, replacement
of low efciency halogen lamps)
• Flashlights (size, low voltage)
• Architectural lighting
• Machine sensors (various geomet ...