SoftCut Reflector Design
Tungsten softlights radiate light in a broad field. Flags, cutters, skirts or louvers are needed to concentrate the light into specific areas. With its unique characteristics and SoftCut reflector design, the Imara produces a high output, concentrated, even spread of light on the horizontal and vertical axes. The beam spread can be further controlled through the use of honeycomb louvers to create a very cosmetic soft edged spot. This concentration
is useful in TV studios and photographic applications where the subject is localized and the spread of the light is required to be more directed.
Heat Management Design
For Kino Flo, heat management is a critical design element of fixture design. The physical heat of the lamp or the buildup of heat within the fixture will directly influence the color temperature and lumen performance and lamp life.
The Imara fixture design addresses these requirements:
- The reflector is properly ventilated near the cathodes (hottest spot) of the lamps.
- The orientation of the lamps (with lamp bases up) keeps the cathodes cool and provides best color temperature stability and best color rendering.
- The lamps are properly spaced apart to maximize light output from the reflector and minimize heat buildup.
A well maintained lamp temperature extends the lumen maintenance, color temperature and life of a lamp.
Yoke Mount and Pole-Op
The Yoke Mount is designed with two holes to allow the yoke bracket to be placed in one of two positions. The additional option is useful when hanging the units with a low ceiling.
The Yoke mounted Imara can be mounted to a stand or hung from a grid using a standard junior pin or Junior Pin Assembly for Yoke (MTP-I80), sold separately.
The Pole-Op Yoke already includes a junior pin and can be hung from a grid using standard studio grid hardware. The Pole-Op offers an advantage of lighting from a grid eliminating the need for ladder access or costly automated rigging and hoist systems. The accessory holder brackets add another hanging option which allows a four point rope hang for specialty rigging applications.
Cost savings attributed to fluorescents cover a broad range of concerns:
- Low energy costs
- Less heat so low air conditioning expenses
- No gel replacements because of low heat
- Fewer lamp replacements due to longer lamp life
- Lamp replacement labor reduced by a factor of 10
Energy Savings Calculations
With the push of reducing fossil fuel consumption, TV studios are looking at cooler, more efficient lighting systems to reduce costs and save energy. One of the most important values is Btu/kWh.
British Thermal Units per Kilowatt Hour
Any light generates a percentage of usable light and the rest in heat.
For example, a standard incandescent light bulb converts only 11 percent of its electrical input into visible light, while the rest is dissipated directly as heat. There are energy costs involved in cooling the studio environment. The measure of Btu/kWh is a means of calculating the thermal loads related to operating lighting.
Use the following information to calculate Btu/kWh:
Watts to Btu
1 kWh = 3413 Btu/hr
1 Watt = 3.413 Btu/hr
3.413 = Btu per Watt-hour
Example: Imara S100 = 550 Watts
550 x 3.413 = 1877.15 Btu/kWh