Name: 25mm 直径 x 75mm 焦距，镀可见光-近红外膜双凸透镜
Brand: TECHSPEC
SKU: 45-891
Price: RMB 440.70

25mm 直径 x 75mm 焦距，镀可见光-近红外膜双凸透镜

产品编码 #45-891 6-10 工作日其他镀膜选项

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RMB 440.70

数量 1-9
RMB 440.70

数量 10+
RMB 396.63

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产品对比

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直径 (mm):

25.00 +0.0/-0.025

后焦距 BFL (mm):

73.84

有效焦距 EFL (mm):

75.00

涂层:

VIS-NIR (400-1000nm)

涂层规格:

R_abs ≤0.25% @ 880nm
R_avg ≤1.25% @ 400 - 870 nm
R_avg ≤1.25% @ 890 - 1000nm

N-BK7

表面质量:

40-20

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

中心偏（弧分）:

倒角:

Protective bevel as needed

中心厚度 CT (mm):

3.50

中心厚度容差 (mm):

±0.10

边缘厚度 ET (mm):

1.45

半径 R₁=-R₂ (mm):

76.66

有效孔径 CA（mm）:

24.00

有效焦距/有效孔径直径比:

3.00

焦距指定波长 (nm):

587.6

焦距容差 (%):

±1

数字孔径 NA:

0.17

类型:

Double-Convex Lens

波长范围 (nm):

400 - 1000

5 J/cm² @ 532nm, 10ns

合规性

RoHS 2015:

符合标准

Certificate of Conformance:

浏览

Reach 235:

符合标准

产品系列说明

带AR镀膜，在400-1000nm范围内每个表面的反射率小于1.25%
最大限度地减少球差和慧差
提供紫外熔融石英双凸透镜
其他镀膜选项：未镀膜、 MgF₂、NIR I、 NIR II、 VIS-EXT、 VIS-NIR 和 YAG-BBAR

TECHSPEC® VIS-NIR镀膜双凸透镜有两个正的、对称的面，两边的半径相等。这些透镜通常被推荐用于共轭比（物距和像距之间的比率）在0.2和5之间的有限成像应用。在共轭比为1时，由于对称透镜的设计，球差、色差、慧差和畸变等像差得以最小化或消除。TECHSPEC 双凸透镜有多种基底和镀膜可选，适用于可见光和近红外光谱。

技术信息

N-BK7
	Typical transmission of a 3mm thick, uncoated N-BK7 window across the UV - NIR spectra. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with MgF2 (400-700nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg ≤ 1.75% @ 400 - 700nm (N-BK7) Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with VIS-EXT (350-700nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg≤ 0.5% @ 350 - 700nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with VIS-NIR (400-1000nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs≤ 0.25% @ 880nm R_avg≤ 1.25% @ 400 - 870nm R_avg≤ 1.25% @ 890 - 1000nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with VIS 0° (425-675nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg≤ 0.4% @ 425 - 675nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with YAG-BBAR (500-1100nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs ≤ 0.25% @ 532nm R_abs ≤ 0.25% @ 1064nm R_avg≤ 1.0% @ 500 - 1100nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with NIR I (600 - 1050nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg≤ 0.5% @ 600 - 1050nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with NIR II (750 - 1550nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs ≤ 1.5% @ 750 - 800nm R_abs ≤ 1.0% @ 800 - 1550nm R_avg≤ 0.7% @ 750 - 1550nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data