The SBC025AR.10 Bi-Concave Lens is an 245 to 440 nm antireflection coated, 25.4 mm diameter, UV grade fused silica bi-concave lens with an effective focal length of -150 mm. It is designed to meet the demanding requirements of laser electro-optic applications. Newport's UV grade fused silica precision bi-concave lenses are polished to tight tolerances using master test plates to ensure minimum wavefront distortion. UV grade fused silica will not fluoresce under UV light and is resistant to radiation. And for high-energy applications, the extreme purity of fused silica eliminates microscopic defect sites that could lead to laser damage.
透镜形状
Bi-Concave
直径
25.4 mm
透镜材料
UV Fused Silica
增透膜
245-440 nm
有效焦距
-150 mm
表面质量
20-10 scratch-dig
表面精度,不规则性
λ/8
表面精度(光圈)
1.5 λ
表面平面度
λ/8
后焦距
-150.85 mm
F/#
-5.9
对中
≤3 arc min
主平面 2
-0.85 mm
主平面 1
0.85 mm
曲率半径
-138.092 mm
倒角
0–0.8 mm face width
倒角公差
45° ±15°, typical
直径公差
+0/-0.1 mm
焦距公差
±1 %
中心厚度
2.5 mm
中心厚度公差
±0.1 mm
边缘厚度
3.45 mm
通光孔径
≥central 90% of diameter
镀膜类型
UV Multilayer
镀膜代码
AR.10
清洁
损伤阈值
2 J/cm2, 10 nsec pulses, 10 Hz at 355 nm
SBC025AR。10双凹透镜为245 ~ 440nm防反射涂层,直径25.4 mm,紫外级熔融石英双凹透镜,有效焦距- 150mm。它是为满足激光电光应用的要求而设计的。纽波特公司的UV级熔融石英精密双凹透镜采用主试板抛光,以确保最小的波前畸变。紫外级熔融石英在紫外光下不会发出荧光,并且抗辐射。对于高能应用,熔融二氧化硅的极高纯度消除了可能导致激光损伤的微观缺陷位点。