LEDs may be little, but new high-brightness models produce a considerable amount of light. First used as status and indicator lamps, and more recently in under-shelf illumination, accent lighting, and directional marking applications, high-brightness LEDs have emerged within the last six years. But only recently have they been seriously looked upon as a feasible option in general-purpose lighting. 

Originally used as status and indicator lamps, and more recently in under-shelf illumination, accent lighting, and directional marking applications, high-brightness LEDs have emerged within the last six years. But only recently have they been seriously looked upon as a feasible option in general-purpose lighting applications. Things like lumen-per-watt efficacy and colour consistency must be improved, and reliability and lumen maintenance should be addressed.

Thus, NG-1000 – Micro Vickers and Knoop Hardness tester uses an LED Cold light source (no heat generated from the light source – service life of light source can reach 100,000 hours)

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