Barium Fluoride (BaF2) Lenses

Products

Specifications

Brochures

Description

Diameter

Focal length

Type

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Code	Diameter	Focal length	Type	Price	Delivery	Add to cart
541-7105	ø 12.7 mm	25 mm	Plano-convex	98 $	4 - 5 days
541-7204	ø 25.4 mm	40 mm	Plano-convex	160 $	Request
541-7205	ø 25.4 mm	50 mm	Plano-convex	148 $	4 - 5 days
541-7207	ø 25.4 mm	75 mm	Plano-convex	132 $	4 - 5 days
541-7210	ø 25.4 mm	100 mm	Plano-convex	120 $	4 - 5 days
541-7212	ø 25.4 mm	125 mm	Plano-convex	120 $	4 - 5 days
541-7213	ø 25.4 mm	150 mm	Plano-convex	120 $	4 - 5 days
541-7214	ø 25.4 mm	200 mm	Plano-convex	120 $	Request
541-7225	ø 25.4 mm	250 mm	Plano-convex	120 $	4 - 5 days
541-7230	ø 25.4 mm	300 mm	Plano-convex	120 $	4 - 5 days
541-7240	ø 25.4 mm	400 mm	Plano-convex	120 $	4 - 5 days
541-7275	ø 25.4 mm	750 mm	Plano-convex	120 $	4 - 5 days
541-7250	ø 25.4 mm	1000 mm	Plano-convex	120 $	4 - 5 days
542-7105	ø 12.7 mm	-25 mm	Plano-concave	98 $	4 - 5 days
542-7205	ø 25.4 mm	-50 mm	Plano-concave	148 $	Request
542-7207	ø 25.4 mm	-75 mm	Plano-concave	132 $	Request
542-7210	ø 25.4 mm	-100 mm	Plano-concave	120 $	4 - 5 days
542-7225	ø 25.4 mm	-250 mm	Plano-concave	120 $	4 - 5 days
542-7250	ø 25.4 mm	-1000 mm	Plano-concave	120 $	4 - 5 days
542-7270	ø 25.4 mm	-2000 mm	Plano-concave	120 $	4 - 5 days

Physical Properties

Crystal type	cubic
Density, g/cm³	4.89
Melting point, °C	1386
Refractive index @ 0.265 µm	n = 1.51217
Refractive index @ 10.3 µm	n = 1.39636
Transmission range, µm	0.15-12

Specifications

Material	BaF₂
Surface quality	60-40 scratch & dig (MIL-PRF-13830B)
Clear aperture	90% of diameter
Diameter tolerance	+0.0, -0.5 mm
Focal length	+-2%@3 µm
Surface irregularity	λ/4 @ 633 nm
Centration	3 arcmin

EKSMA Optics Barium Fluoride (BaF2) Components
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Useful transmission range covers 0.265-10 µm
Most resistant to high energy radiation among fluorides listed in this catalogue

Barium fluoride (BaF₂) is used for optical windows, prisms and lenses transmitting from ultraviolet into infrared, it can be used as infrared laser window or lens. BaF₂ is recommended for use as a vacuum ultraviolet window where high radiation resistance is required. BaF₂ is less soluble than LiF, but relatively more soluble than MgF₂ and CaF₂.