Abrisa Dichroic Glass MR16 50mm Filters
What is a Dichroic Filter?
A dichroic filter, thin-film filter, or interference filter is a very accurate color filter used to selectively pass light of a small range of colors while reflecting other colors. By comparison, dichroic mirrors and dichroic reflectors tend to be characterized by the color(s) of light that they reflect, rather than the color(s) they pass. Dichroic filters use the principle of thin-film interference, and produce colors in the same way as oil films on water. When light strikes an oil film at an angle, some of the light is reflected from the top surface of the oil, and some is reflected from the bottom surface where it is in
contact with the water. Because the light reflecting from the bottom travels a slightly longer path, some light wavelengths are reinforced by this delay, while others tend to be canceled, producing the colors seen. Dichroic color filter coatings are an excellent alternative to dyed plastics and glass when a beam of light must be split into two distinct beams varying by wavelength. Dichroic and color correction filters have the advantage of reflecting unwanted light instead of absorbing the energy, which allows dichroic filters to be used with much higher intensity light sources up to 550°F.
Dichroic glass coating/filters can be utilized for heat control (UV & IR) blocking, as soft and spread lenses, and for color correction.
Dichroic filters from Abrisa Technologies are primarily used in such applications as:
• LED color correction
• Special effects (photography)
• Entertainment (stage & theatrical lighting)
• Architectural lighting systems – mood and cosmetic enhancement (color correction) add warmth or cooler atmosphere depending upon the environment desired. For instance restaurant lighting – a warm dichroic filter is used to enhance food and atmosphere while a jewelry store would use a cool filter to enhance sparkle and shine of the gems.
• Museum
• Retail
• Restaurant
• Casino
• Residential
• Outdoor
• Landscape Dichroic Colors Similar to Rosco # # 120 Red 26 # 121 Golden Amber 20 # 122 Yellow 12 # 123 Medium Green 389 # 125 Medium Blue 68 # 129 Blue Magenta 49 # 130 Indigo 59 # 131 Pink Amber 03 # 132 Cyan 73 # 133 Pink 36 # 134 Dark Blue 80 # 135 Flesh Pink 34 # 137 Deep Blue 85 # 138 Orange Red 25 # 142 Orange 23 # 143 Fire 22 # 144 Salmon 42 # 145 Pale Pink 34 # 146 Light Yellow Green 86 # 147 Medium Yellow Green 90 # 149 Pale Green 88 # 150 Aqua (Turquoise) 95 # 151 Straw Amber 15 # 153 Pink Peach 02 # Medium Dark Blue 69
Dichroic Color Correction Filters
• #124 Cool Blue Color Corrector: Boosts color temperature (3200°K-3500°K) Similar
to Rosco #3208 (1/8" thick)
• #126 Full Blue Color Corrector: Boosts 3200°K-5500°K Similar to Rosco #3202
(1/8" thick)
• #127 Cosmetic Peach Color Corrector: Lowers color temperature (3000°K-2700°K)
Similar to Rosco #3410 (1/8" thick)
• #128 Medium Peach Color Corrector: Lowers color temperature (5500°K-3800°K)
Similar to Rosco #3408
• #152 Full CTO Color Corrector: Lowers color temperature ( (5500°K-3200°K) Similar
to Rosco #3407 Solid Colored Glass
Specialty Filters
Most available in a range of thicknesses
• Hot Mirrors: Reflects infrared (heat), while passing visible light 3 types available.
• 45° Cold Mirrors: Reflects visible light while passing infrared (IR)
• UV Blacklite: Passes UV, blocks visible light
• Neutral Density (ND) Grey Filters: Reduces light, 31% & 62% transmissions