G-Series Glare Control and Gain Diffusers
Glare Suppression
G-Series glare control diffusers suppress high-angle light above 65 degrees to reduce visual glare and improve the Unified Glare Rating (UGR) of luminaires. This helps luminaires comply with IESNA RP1-04 and EN12464 glare specifications. These patented² and patent-pending diffusers, unlike conventional prismatic sheets, have a soft cutoff with no color separation thereby increasing visual appeal and LED hiding ability.
Gain
G-Series diffusers can increase central (on-axis) candela intensity by up to 30%, or as high as 60% when used with a C-HE55 or C-HE80 diffuser.
An optional anti-wet-out coating is available on the back surface for compatibility with edge lit lighting (light guide plates).
| Product | Appearance | Glare L65° / L0° (% of CBCP, typical. Lower is better)1 | UGR 2' x 2' 4000 lumens typical | Gain L0° G-Series / L0° Lambertian (Typical Edge-Lit Panel)1 G-Series | Gain L0° G-Series / L0° Lambertian (Typical Edge-Lit Panel)1 G-Series with C-HE80 | Angle FWHM (Typical)1 | Efficiency in LED luminaire (Typical)1 |
|---|---|---|---|---|---|---|---|
| G-GC90 | Smooth | 15% | 17.7 | 125% | 150% | 90° | 89 - 93% |
| G-GPHS | 1.5 mm Hex Pattern | 15% | 17.5 | 130% | 160% | 90° | 89 - 93% |
| G-GPHM | 2.4 mm Hex Pattern | 13% | 17.3 | 130% | 160% | 90° | 89 - 93% |
| G-GPHX | 10 mm Hex Pattern | 12% | 17.2 | 130% | 160% | 90° | 89 - 93% |
| G-GH85 | Smooth with LED hiding | 13% | 17.5 | 135% | 160% | 85° | 89 - 93% |
| G-GH85 + G-GPHM | 2 Layer Solution | 9% | 16.3 | 180% | 75° | 85 - 91% | |
| Lambertian Source | (provided for reference) | 40% | 100% | 100% | 120° | 100% |
Visual Appearance
Glare Control diffusers exhibit a variety of appearances depending on illumination conditions. They can be used in conjunction with C-Series diffusers to better hide light sources and further increase gain.
Usage Notes:
- G-Series glare control diffusers must be flat to achieve glare control; they cannot be formed in curves around lamps
- G-Series glare control diffusers must be used with the microstructure facing away from the LED or lamp
- Helps luminaries meet ANSI/IESNA RP-1-04 and EN12464 glare standards for office/indoor lighting
- Suppression of glare and efficiencies are typical; they vary greatly depending on luminaire design
- Bright View applications engineers can assist with product choices and help your design achieve peak performance
1Optical performance including Glare, Gain, Angles and Efficiencies are typical; they vary greatly depending on luminaire design. Results shown were measured using a test fixture with lambertian light source in a goniophotometer.
2Protected by patent US9086521, other patents, and pending patent(s).
