Diameter

• 1.0 in. ( 25.4 mm )(21)
• 2.0 in. ( 50.8 mm )(18)
• 0.98 in. ( 25.0 mm )(14)
• 1.97 in. ( 50.0 mm )(13)
• 0.5 in. ( 12.7 mm )(13)
• 0.49 in. ( 12.5 mm )(13)

• 1.18 in. ( 30.0 mm )(9)
• 0.79 in. ( 20.0 mm )(9)
• 0.39 in. ( 10.0 mm )(9)
• 1.57 in. ( 40.0 mm )(8)
• 0.20 in. ( 5.0 mm )(7)
• 0.59 in. ( 15.0 mm )(6)
• 2.95 in. ( 75.0 mm )(4)
• 0.49 in. ( 12.50 mm )(3)
• 2.5 in. ( 63.5 mm )(1)
• 1.5 in. ( 38.1 mm )(1)
• 1.38 in. ( 35.0 mm )(1)
• 1.25 in. ( 31.75 mm )(1)
• 0.94 in. ( 23.75 mm )(1)
• 0.87 in. ( 22.0 mm )(1)
• 0.68 in. ( 17.25 mm )(1)
• 0.51 in. ( 13.0 mm )(1)
• 0.50 in. ( 12.75 mm )(1)
• 0.50 in. ( 12.7 mm )(1)
• 0.37 in. ( 9.5 mm )(1)
• 0.25 in. ( 6.35 mm )(1)
• 0.10 in. ( 2.5 mm )(1)

Thickness

• 0.079 in. ( 2.0 mm )(33)
• 0.24 in. ( 6.0 mm )(21)
• 0.118 in. ( 3.0 mm )(21)
• 0.04 in. ( 1.0 mm )(15)
• 0.12 in. ( 3.0 mm )(12)
• 0.39 in. ( 10.0 mm )(11)

• 0.157 in. ( 4.0 mm )(10)
• 0.059 in. ( 1.5 mm )(8)
• 0.197 in. ( 5.0 mm )(6)
• 0.37 in. ( 9.4 mm )(4)
• 0.051 in. ( 1.3 mm )(4)
• 0.02 in. ( 0.5 mm )(4)
• 0.24 in. ( 6.1 mm )(3)
• 0.08 in. ( 2.0 mm )(2)
• 0.50 in. ( 12.7 mm )(1)
• 0.37 in. ( 9.52 mm )(1)
• 0.236 in. ( 6.0 mm )(1)
• 0.125 in. ( 3.175 mm )(1)
• 0.124 in. ( 3.15 mm )(1)
• 0.09 in. ( 2.3 mm )(1)
• 0.089 in. ( 2.25 mm )(1)
• 0.08 in. ( 2.00 mm )(1)

Antireflection Coating

• Uncoated(66)
• 430-700 nm (AR.14)(10)
• 425-675 nm (AR.14), both sides(10)
• 250-700 nm (AR.15), both sides(10)
• 250-450 nm (AR.10), both sides(10)
• 1000-1550 nm (AR.18)(9)

• 8-12 μm (AR.21)(8)
• 650-1000 nm (AR.16)(8)
• 300-1200 nm (AR.20)(8)
• 3-12 μm (AR.20)(7)
• 245-440 nm (AR.10)(4)
• R< 0.25% per surface @ 532 nm(3)
• R< 0.25% per surface @ 355 nm(3)
• R< 0.25% per surface @ 266 nm(3)
• R< 0.25% per surface @ 1064 nm(3)

Surface Quality

• 40-20 scratch-dig(50)
• 20-10 scratch-dig(39)
• 10-5 scratch-dig(31)
• 80-50 scratch-dig(23)
• 10-5 Scratch-Di g(12)
• 15-5 scratch-dig(6)

• 60-40 scratch-dig(1)

Surface Accuracy

• λ/10 @ 632.8 nm(47)
• λ/20 @ 10.6 μm(27)
• 2 λ per 25.4 mm @ 632.8 nm(23)
• λ/2 @ 632.8 nm(13)
• λ/4 @ 633 nm on both side(2)
• 1/20 λ @ 10.6 μm(2)

• λ/4 @ 633 nm per inch(1)
• λ/10 @ 633 nm(1)

Clear Aperture

• Central 90% of diameter(65)
• Central 80% of diameter(50)
• Central 85% of diameter(36)
• ≥central 80% of diameter(1)

Parallelism

• <5 arc seconds(39)
• ≤3.5 arc min(23)
• 5 arc seconds(12)
• < 1 arc minute(4)
• ≤3 arc min (≤0.9 mrad) arc sec(3)

Wedge

• ≤30 arc sec(32)
• 30 ±15 arc min(6)
• 30 ±5 arc min(2)

Price

• Less than $50(1)
• $50 - $100(24)
• $100 - $200(71)
• $200 - $300(31)
• $300 - $400(12)
• $400 - $500(7)

• $500 - $750(11)
• $750 - $1000(2)
• $1000 - $1500(2)
• $1500 - $2000(1)

Availability

• In Stock(134)
• 1 Week(3)
• 2 Weeks(1)
• 3 Weeks(6)
• 6 Weeks(1)
• 7 Weeks(1)

• 8 Weeks(7)
• 9 Weeks(2)
• 10 Weeks(1)
• 12 Weeks(1)
• 13 Weeks(4)