产品描述
北京波威科技有限公司代理的美国CVI厂家的材质为截面为矩形的平凹柱面透镜，分为标准型BK7材质的和精确型BK7材质以及熔融石英材质的。
一、标准型BK7材质（LCN-C - Standard BK7 Rectangular Cylindrical Plano-Concave Lenses）
产品技术参数描述：
|
Specifications |
|
|
Antireflection Coating |
User specified |
|
Center Thickness |
tc±0.6 mm |
|
Chamfer |
Slight protective bevel |
|
Clear Aperture (CA) |
≥ 90% of central dimension |
|
Design Wavelength |
587.6 nm |
|
Dimensional Tolerance |
±0.6 mm |
|
Flat Island Width (Δ) |
0.5±0.4 mm |
|
Optical Material |
N-BK7 |
|
Paraxial Focal Length |
f±2% |
|
Surface Quality |
60-40 scratch and dig |
|
Wedge (tc/x) |
≤ 8 mrad |
具体选型表请参见资料下载PDF
二、精密型BK7材质（RCC-C - Precision BK7 Rectangular Cylindrical Plano-Concave Lenses ）
产品技术参数描述：
|
Specifications |
|
|
Antireflection Coating |
Wavelength user specified |
|
Center Thickness |
tc±0.25 mm |
|
Chamfer |
0.35 mm at 45° typical |
|
Clear Aperture (CA) |
≥ 85% of central dimension |
|
Damage Threshold |
10 J/cm2, 20 nsec, 20 Hz @ 1064 nm |
|
Dimensional Tolerance |
+0/-0.25 mm |
|
Optical Material |
N-BK7 |
|
Paraxial Focal Length |
f±0.5% |
|
Surface Figure |
x direction: λ/4 per cm rms at 633 nm before coating |
|
Surface Quality |
20-10 scratch and dig |
|
Wedge |
≤ 3 arc minutes |
|
Antireflection Coating |
|
|
Broadband |
Ravg ≤ 0.5% per surface |
|
Narrowband |
R&n
|
