Welding Notch Filter

The filter is an essential component in the Darkening Welding Lenses. It helps to cut off the infrared light and UV energy to protect the user’s eyes and facilitates the operation when people are welding.

	Application : Darkening Welding Lens
	Features : IR energy reflection UV energy reflection

Standard Spectral Characteristics

540-580nm Tmax peak > 50%

780-2000nm Tavg < 0.1%

Available Sizes
◎ Square : 7mm - 300mm
◎ Round : 10mm - 450mm

Available Glass Material & Thickness
◎	Soda-Lime Glass:
	1.10mm, 2.0mm, 3.0mm, etc.
◎	Tempered Glass:
	2mm, 3mm, etc.
◎	Borosilicate Glass:
	0.30mm, 0.40mm, 0.55mm, etc.
◎	Borofloat Glass:
	1.10mm, 2mm, 2.75mm, 3.3mm, etc.

Maximum Operation Temperature
◎	Soda-Lime Material: 150°C
◎	Tempered Material: 250°C
◎	Borosilicate Glass: 450°C
◎	Borofloat Glass: 450°C

Cutting Tolerance

◎ ± 0.2mm

Technical Specification

Humidity, Adhesion, and Abrasion Resistance is based on MIL-M-13508C

Custom Design Flexibility
Kupo’s experienced engineers are available to customize the filter based on the specs you require.
Any request of a specified size and shape is welcome.
Please contact Kupo for further information!

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