LEDs are solid-state electronics that instantly transform electrical energy into a single colour of light. LEDs don’t waste energy by converting it into heat that doesn’t produce light since they use “cool” light-generating technology, in which the majority of the energy is provided in the visible spectrum. In contrast, an incandescent bulb emits the majority of its energy in the infrared (or non-visible) region of the spectrum. As a result, both HID and fluorescent bulbs generate a lot of heat.

LEDs don’t just provide cold light; they also:

• Can be powered by a solar panel or even a portable battery pack.
• Can be included in a control system.
• Are compact, shock-resistant and vibration-resistant.
• Enjoy a quick “on-time” (60 nsec vs 10 msec for an incandescent lamp).
• Possess good colour resolution and a little or nonexistent shock danger.

NextGen’s Macro Vickers Hardness Tester – Analogue, Digital and Digital with CCD Optical Analysis Software uses LED Cold light source (no heat generated from light source – service life of light source can reach 100,000 hours)