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Transparent Heaters
are used
for the defrosting and maintaining
LCD displays at optimum operating
temperatures for screen response or the defrosting
and maintaining windows from
moisture.
Visiontek Systems have developed a clear transparent
heater circuit with a proprietary
rugged
busbar termination that can incorporated with our
range of contrast enhancement and
EMI shielded filters.
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Specification
The
Visiontek Transparent Heaters are
either unlaminated or fully
laminated glass filters with an
Indium Tin Oxide (ITO) coating of 12
ohms/sq. This is an optimum coating
density to provide excellent heating
performance with good optical
clarity compared to the highly
reflective thin resistive wires
typically used to provide heat.
Extensive testing and military
qualification has proved the Optical
Filter transparent heater to
maintain a LCD at 20'C with an
outside temperature of -50'C and
3’C/minute temperature gradient.
Termination Method
Highly rugged proprietary insulated
busbar and wire termination along
two opposing edges. |
Application
Transparent heaters are used in a
board range of applications
including: public information
displays, material handling
equipment, military ground based
vehicles, naval flight deck
equipment, control panels on heavy
agricultural and earth moving
equipment, periscopes and off-shore
oil platforms.
Product Range
Un-laminated glass
transparent heater
Transmittance @ 550nm 89%
Thickness 1.1mm only
Material
Plain float finish only
Max size 400 x 500mm
Laminated glass transparent heater
The ITO surface is located within the lamination for
ruggedization and additional layers
incorporated for mechanical and
impact resistant.
Thickness 2.5mm upwards
Finish plain, etch non-glare and
anti-reflective coating
Additional elements for
Multi-function
windows with
transparent heater
EmiClare EMI shielding
Contrast enhancement
Etch non-glare and anti-reflective coated front surface
finish
Silk screen printing
Colours neutral density filters
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