4Features • High CRI 90+ • High CCT 5000K • Full Spectrum • The Color of Natural Sunlight!
5Benefits Objects appear as they would outdoors Blues are true blue Whites are whiterReds are more vibrant
6Full SpectrumSpectral emission in all parts of the visible spectrum and in the near UVCCT of 5000KCRI of 90+Natural White lamps are a full spectrum product!
7Light output in all parts of visual spectrum Natural WhiteDaylight at 5000KLight output in all parts of visual spectrum
8High CCT Color Temperature Name CCT Range Description “27K” K Very Warm...incandescent color (2750K)…only available in a coated version“3K” K Warm…close to halogen lamp color (clear 3200K, coated-3000K)“4K” K Neutral…close to fluorescent or mercury “cool white”(clear-4000K, coated-3700K)“5K” 5000K Daylight…close to color of the sun. Often called a “full spectrum” source“6K” 6500K Daylight…close to average outdoor sky color“10K” 10,000K Blue-White…close to clear blue sky color….for aquarium lighting
9What is CRI? Color Rendering Index A numeric indication of a lamp’s ability to render individual colors accurately relative to a standardCRI value is derived from a comparison of the lamp’s spectral distribution to the standard at the same color temperature
11Workspaces and areas look brighter Tasks, such as reading, become easier to performMore lamps operating to rated lifeIncreased lumen maintenance
12• More consistent color from lamp to lamp 20,000• More consistent color from lamp to lampA regular benefit of
13A regular benefit of• Twice as fast as ceramic metal halide• Don't be left in the dark!
14Lasts longer than standard metal halide or ceramic metal halide A regular benefit ofRated life hoursFewer failures70% survival at end of rated life
15Weldless Construction • Elimination of #1 cause of Failure Mode• Most Durable HID Lamp Available - Shipping - Vibration• More Consistent LCLA regular benefit of
16ANSI type-O rating Complies with 2005 NEC Operate continuously without weekly shut-downsProtect merchandise and signage from fadingBlocks nearly all the damaging ultraviolet lightA regular benefit of
19Photopic lumens (day time) • Published lumen ratings• Light measurement based on daytime observationsScotopic lumens (nighttime)• Lumen measurements corrected for nighttime visionS/P Ratio• The ratio of light measured by the photopic and scotopic methods
20S/P Ratio Comparisons for Outdoor Lighting • The S/P Ratio of 5000K daylight light sources is 2.1• The S/P Ratio of 4000K light sources is 1.65• The S/P Ratio of 3000K light sources is 1.4• The S/P Ratio for yellow HPS light sources is 0.64
21What Does the S/P Ratio Tell Us about Outdoor Lighting? • Lamps with high S/P ratios (high scotopic content) improve one’s ability to see outdoors.• A 4000K light source is at least twice as effective for viewing at night as HPS sources. Similarly, a 5000K light source is more than 3 times as effective as HPS sources.
22What Does the S/P Ratio Tell Us about Indoor Lighting? • Lamps with high S/P ratios (high scotopic content) improve one’s ability to see indoors.• Human studies have shown that the S/P values, though previously applicable to only nighttime conditions, can be used to describe the "effective lumens" of indoor lighting as well.• Example: If two rooms are lit separately with 4000K and 5000K lamps to equal photopic luminance, the 5000K room will appear at least 13% brighter.
23What are “Effective Lumens”? • As defined by Dr. Ian Lewin, the term “effective lumens” describes the modified lumen output of a lamp, taking into account the shifting color sensitivity of the eye at low light levels.• The Effective Lumen rating reflects the lumen rating of Natural White lamps is given relative to 4000K lamps. The formula used to determine this rating indoors is (S/P)0.5. This provides the end user, lighting designer or contractor with an accurate comparison of traditional 4000K lamps to 5000K lamps.
24How does this relate to Natural White? With a high S/P ratio of 2.1, Natural White lamps provide customers with an:• Improved ability to see indoors• Improved nighttime visionThis makes Natural White an excellent product for either indoor or outdoor lighting applications. Combined with high CRI and high CCT, the Natural White lamp/ballast system features superior color rendering, as well as all the benefits of Uni-Form arc tube and Opti-Wave ballast technology.