Name: 35mm Sq., 3mm Thick, VIS-NIR Coated λ/4 N-BK7 Window
Brand: TECHSPEC
SKU: 49-634
Price: NT$4,165

35mm Sq., 3mm Thick, VIS-NIR Coated λ/4 N-BK7 Window

Specifications

概況

Type:

Protective Window

物理和機械特性

Bevel:

Protective as needed

Clear Aperture (%):

Clear Aperture CA (mm):

31.50 x 31.50

Dimensions (mm):

35.00 x 35.00

Thickness (mm):

3.00 ±0.20

Edges:

Fine Ground

Knoop Hardness (kg/mm²):

610

Parallelism (arcmin):

Poisson's Ratio:

0.206

Young's Modulus (GPa):

Length (mm):

35.00

Width (mm):

35.00

光學特性

Abbe Number (v_d):

64.17

Coating:

VIS-NIR (400-1000nm)

Coating Specification:

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

Index of Refraction (n_d):

1.516

Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More

N-BK7

Surface Flatness (P-V):

λ/4

Surface Quality:

60-40

Wavelength Range (nm):

400 - 1000

5 J/cm² @ 532nm, 10ns

材料特性

Coefficient of Thermal Expansion CTE (10^-6/°C):

7.1 (-30 to +70°C)
8.3 (+20 to +300°C)

Density (g/cm³):

2.51

Regulatory Compliance

RoHS 2015:

Compliant

Reach 224:

Compliant

Certificate of Conformance:

View

產品概覽

提供2mm 到 200mm尺寸的圓形和方形版本選項
7 種寬頻抗反射鍍膜選項
業內最齊全標準N-Bk7 窗鏡選項
另有超薄 N-BK7 窗鏡可供選擇

TECHSPEC^® λ/4 N-BK7 精密窗口片非常適用於工業與低功率雷射應用。藉由精密公差設計，可以最大程度減少光束畸變與散射。廣波段鍍膜選項可延伸這些精密窗口片在可見光與近紅外光譜內的有效工作範圍。TECHSPEC^® λ/4 N-BK7 精密窗口片提供2mm 到 200mm尺寸的圓形和方形版本選項。

注意：此產品系列的新增產品可能會指定透射波前畸變 (TWD) 規格，而不是表面平整度。有關這兩種規格之間差異的更多信息，請參閱我們的應用說明“了解光學窗口片”。

Technical Information

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

Accessories

Coating Curves

VIS-NIR (400-1000nm)

Only 2 different Y Axises can be displayed at one time.

請注意，每種產品指定設計範圍以外的鍍膜性能僅為理論值，可能實用時會有所不同。

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

Custom dimensions, materials, coatings, and more
High-precision surface quality and flatness
Tight tolerances and complex geometries
Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

成像鏡頭選擇器

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#34-429 - 50mm Dia., 3mm Thick, Uncoated λ/4 N-BK7 Window

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Compatible Mounts

Title	Type	庫存號碼	價格	Buy
15mm Sq., Fixed Filter Holder	Fixed	#54-996	NT$2,205 Request Quote	5-7 Days ×
Filter Kinematic Mount, 2-Screw	Adjustable - Tip-Tilt	#58-874	NT$4,130 Request Quote	5-7 Days ×
60mm sq - Rectangular Bar Clamp	Fixed	#54-995	NT$4,130 Request Quote	5-7 Days ×
Filter Kinematic Mount, 3-Screw	Adjustable - Tip-Tilt	#58-875	NT$4,480 Request Quote	5-7 Days ×

Check out our full selection of mounts here.

資源

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Clear Aperture (CA)

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Surface Quality

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35mm Sq., 3mm Thick, VIS-NIR Coated λ/4 N-BK7 Window

Specifications

概況

物理和機械特性

光學特性

材料特性

Regulatory Compliance

產品概覽

Technical Information

Accessories

Coating Curves

相關產品

Custom

成像鏡頭選擇器

Frequently Purchased Together

Compatible Mounts

資源

抗反射 (AR) 鍍膜

光學鍍膜簡介

Beam Displacement Calculator

Understanding Optical Windows

Optical Windows Review

I need a window for imaging underwater. The water is filtered and at room temperature with a very small amount of detergent in it. It is flowing at low speed. Will a MgF2 coated window survive this for a few years?

光學玻璃

Surface Accuracy

BBAR Coating

了解表面品質規格

Removing Protective Plastic Coating

Anti-Reflection (AR) Coating

Bevel

Parallelism

Seamed Edge

Introduction to Basic Ray Optics

Surface Flatness

Transmission

How do I clean my optics?

Clear Aperture (CA)

愛特蒙特光學遍佈全球的製造工廠

愛特蒙特光學的度量技術：將測量作為製造的關鍵要素

Surface Quality