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Products Colored Glass Filters
Sharp Cut Filters ( L,Y,O,R )
  Sharp Cut Filters
( W series )
  Color Compensating Filters ( C )
  Infrared Transmitting Filters ( R,IR,RM,RT )
  Neutral Density Filters ( ND )
  Blue Filters ( B )
  Heat Absorbing Filters ( HA )
  Green Filters ( G )
  Ultraviolet Transmitting, Visible Absorbing Filters ( U )
  Light Balancing Filters
( LA, LB )
  Multiband Calibration Filters ( V,H,HY )
Products Opto-Electronics Glasses
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Heat Absorbing Filters ( HA )

Heat Absorbing Filters feature high transmittance in the visible region and good absorption of heat rays (infrared rays).
They efficiently absorb thermal radiation emitted from light sources and are highly effective when employed for slide projectors and illumination equipment.
Remarks : To prevent a filter glass from being broken by rapid heating or cooling, this filter can be also provided as a thermal toughening tempered glass.

Note : Strengthened glass, produced by tempering processes, may also be supplied.

Transmittance
HA30-50
 
PC Use our transmittance simulation software for further information on transmittance. [Transmission simulation software]
Heat Absorbing Filter: Data
 
Item / Name Standard value Color specification
(Standard illuminants A)
Thick-ness Ref
lective index
Chemical pro
perties
Thermal properties Mecha
nical pro
perties
Specific gravity
λTmax Transmittance Tav x y mm 600nm DW DA Tg TS α
-30/
70
α
100/
300
HK FA d
pdf HA5 T750<6 T1000<1 63±5 0.424 0.419 3.00 1.525 1 595 64 517 2.63
pdf HA15 380±5 T750<15 70±5 0.431 0.414 3.00 1.524 1 597 65 502 2.64
pdf HA30 T750<35 T1000<1 80±5 0.438 0.412 3.00 1.519 1 565 620 66 2.61
pdf HA50 T750<55 T1000<3 80±5 0.440 0.411 3.0 1.515 1 560 615 66 2.60
* The listed data are standard values. As we are always improving our products,
the data listed are subject to change without notice.
Explanation of terms for transmittance specifications Explanation about the specification values in the tables is displayed.
Colored Glass Glossary Explanation about the items other than specification values in the tables is displayed.
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