HIGH DIFFUSE REFLECTANCE FOR HIGH EFFICIENCY LIGHT FIXTURE DESIGN WhiteOptics develops and manufactures the patent-pending WhiteOptics Reflector based on a highly reflective plastic substrate. White97 Film Insertable reflector, 18 mils thick Available in rolls, custom width Die-cut and thermoformable Available with adhesive backing and release liner whiteoptics The reflector is unique in that it has extremely high diffuse reflectance and has greater than 97% reflectance across the visible spectrum, allowing light fixtures to be designed with more efficient light output while the highly diffuse nature of reflection allows light to be distributed evenly with a low-glare æsthetic. White97 Film Coil metal composite Can be roll formed, progressive die stamped, punched Available in cold rolled steel and Aluminum Features Benefits 97% Highly diffuse UV stable, does not yellow Antistatic Cleanable with common cleaners Color neutral Increased light output, Energy efficiency Low glare, uniform reflectance Extended product life Low dirt depreciation (LLD) Easy to clean No color shift or iridescence vs Incident Angle * vs Wavelength 98% 96% 94% White97 WhiteOptics Metal 98% 96% 94% White97 (film) 95% Reflective PVD Aluminum 88% 86% High reflectance powder coat 0 20 40 60 Incident Angle *testingby LTI Optics LLC 84% 400 500 600 700 Wavelength (nm) HIGH DIFFUSE REFLECTANCE Reduces Lamp Image Mixes LED colors Diffuses indirect light efficiently Reduces hotspots Reduces glare APPLICATIONS Fluorescent lighting LED lighting Lightboxes/Illuminated signage Daylighting Display backlighting Reflective tiles 2
Energy Efficiency Why does 5 to 20% fixture efficiency improvement matter? Fixture Manufacturers Lighting Specifiers LED Downlight Building Owners Fixture: 4 LED Downlight, 14 watt Frosted diffusion lens Fixture efficiency is becoming a strong point of differentiation. Increases of even 2% are significant. High reflectance coil eliminates need for post-forming powder coat paint. Willingness to pay premium for increased efficiency and white, diffuse distribution 2-year payback in energy savings is a no brainer for investment value to your customers PERFORMANCE TESTING Factory Reflector: Aluminum back-reflector Powder-coat white trim Light Output with and without White97 700 Test: Integrating sphere 24C constant ambient Third Party Testing 13% efficiency increase over powder coat paint in Direct/Indirect fixture 650 600 with White97 WhiteOptics White97 ring inserted Lumens 550 500 450 400 with powder coat trim 350 0 15 30 45 60 75 90 Time (min) 16% Light output improvement High Efficiency Architectural Luminaire Fixture: 2X2 recessed with linear prismatic lens Lamps: 2, GE F14WT5-835 ECO Finish: High reflectance white powder coat, ribbed reflector Light Output Comparison using WhiteOptics Reflector 19.3% increase 15.5% increase Luminaire as is Efficiency = 64.6% 0.026 powder coat side reflectors Luminaire with reflector Efficiency = 77.5% Direct Indirect 2 X4 0.026 WhiteOptics Metal reflector on sides and ballast PHILIPS F54T5/841/HO/A LTO 91% reflective powder coat *Lux measured at 5' in integrating cavity Fixture efficiency improvements using the reflector are highly dependant on fixture design, lamp and ballast selection. 3
Why does 97% reflectance matter? Every time a light ray is reflected, a portion will be absorbed by the reflecting surface. Many current fixture designs involve multiple reflections to achieve good aesthetics for indirect lighting or tight cavities. Used in such situations, a high performance reflector will minimize absorbance from multiple bounces and maximize the usable exiting light. A small difference in reflectance can make big difference in lighting efficiency. Why does high diffuse reflection matter? For typical indoor lighting applications, many designers would like to present a uniform, soft lighting experience, avoiding unpleasant glare and uneven hot spots. This becomes even more critical with LED light fixtures where diffuse reflectance is needed to hide multiple lamp images and mix color. % Remaining light 80% 70% 60% 50% 40% 1 2 3 4 5 # of bounces 97% 95% 85% Enhanced Aluminum vs WhiteOptics VS DIFFUSE Existing Commercial Diffuse Reflector WhiteOptics White97 Diffused luminance of 40 degree incident light 5 Significantly more uniform look vs specular aluminum at all viewing angles
IMPROVING LIGHTING EFFICIENCY AND DESIGN www.whiteoptics.com PHONE: 302.476.2055 EMAIL: INQUIRIES@WHITEOPTICS.COM 18 SHEA WAY, SUITE 106 NEWARK, DELAWARE 19713