20mm Dia. x 80mm FL, Uncoated, Double-Convex Lens

Specifications

概況

Type:

Double-Convex Lens

物理和機械特性

Diameter (mm):

20.00 +0.0/-0.025

Centering (arcmin):

Bevel:

Protective bevel as needed

Center Thickness CT (mm):

4.00

Center Thickness Tolerance (mm):

±0.10

Edge Thickness ET (mm):

2.78

Clear Aperture CA (mm):

19.00

光學特性

Back Focal Length BFL (mm):

78.67

Effective Focal Length EFL (mm):

80.00

Coating:

Uncoated

N-BK7

Surface Quality:

40-20

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Radius R₁=-R₂ (mm):

82.00

f/#:

4.00

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Numerical Aperture NA:

0.13

Wavelength Range (nm):

350 - 2200

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 235:

Compliant

產品概覽

350 - 2200nm 的波長範圍
精準的直徑及共軸性容差，輕鬆實現 OEM 整合
提供各式各樣的直徑、焦距及鍍膜
抗反射鍍膜選項：MgF₂、VIS 0°、VIS-NIR、NIR I、NIR II、VIS-EXT 及 YAG-BBAR

雙凸 (DCX) 透鏡採用兩個同樣外凸的曲面，具有正焦距，可用於1:1成像及多元件系統中。

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

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

Frequently Purchased Together

#02-105 - 12.5mm Diameter Float Glass Window

NT$473

#30-120 - 15mm Dia x 25.4mm EFL Hastings Triplet Achromatic Lens

NT$4,445

6mm Dia. x 6mm FL, MgF<sub>2</sub> Coated, Double-Convex Lens

#31-860 - 6mm Dia. x 6mm FL, MgF₂ Coated, Double-Convex Lens

NT$1,260

#32-021 - 6mm Dia. x 6mm FL Uncoated, Double-Convex Lens

NT$1,015

Compatible Mounts

Title	Type	庫存號碼	價格	Buy
20.0mm Optic Dia., Optic Mount	Fixed	#64-559	NT$1,068 Request Quote	5-7 Days ×
20mm Inner Single Optic Mount	Fixed	#38-754	NT$1,190 Request Quote	5-7 Days ×
25mm Cage 20mm Diameter Lens Mount	Fixed	#85-543	NT$1,496 Request Quote	5-7 Days ×

Check out our full selection of mounts here.

資源

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Back Focal Length (BFL)

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Field Curvature

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Sag

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Quickly Respond to Collapsing Product Lifecycles

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Center Thickness (CT)

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Chromatic Focal Shift

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Conjugate Distance

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Épaisseur de bord

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Distance focale effective (EFL)

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Power

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Surface Quality

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20mm Dia. x 80mm FL, Uncoated, Double-Convex Lens

Specifications

概況

物理和機械特性

光學特性

Regulatory Compliance

產品概覽

Technical Information

Accessories

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

Lens Geometry Performance Comparison

瞭解光學規格

SAG Calculator

下一代球面透鏡

Edge-Blackening

Geometrical Optics 101: Paraxial Ray Tracing Calculations

Optics Application Examples

Understanding Optical Lens Geometries

球面透鏡的精準容差

Keys to Cost Effective Optical Design and Tolerancing

How do I clean my lenses?

Is it possible to find Plano-Concave (PCV) or Double Concave (DCV) lenses where the diameter is greater than the focal length?

How does reversing the orientation of a PCX lens affect the EFL and BFL in a setup?

Double-Concave (DCV) Lens

Double-Convex (DCX) Lens

Meniscus Lens

Plano-Concave (PCV) Lens

Plano-Convex (PCX) Lens

在紅外應用中使用彎月透鏡的優勢

How to Design your own Beam Expander Using Stock Optics

Modifying Stock Optics Tip #3: Turn A Sphere Into An Asphere

What is the difference between the effective focal length and the back focal length?

What are the benefits of aspheric lenses compared to standard singlet lenses?

I am looking to prototype an illumination system. My objective is to use a small halogen filament bulb and end up with a beam of light. What would be the best lens or lens combination to give me this projected spot of light?

Back Focal Length (BFL)

Field Curvature

Sag

快速建立光學產品原型

光學玻璃

像差如何影響機器視覺鏡頭

解析度與對比度限制： 艾里斑

What is the difference between an inked lens and a non-inked one?

If I want to design with your lenses and lens assemblies, how do I get the information that I need?

Now that I have chosen my lens, how do I mount it?

Center Thickness (CT)

Chromatic Focal Shift

Conjugate Distance

Épaisseur de bord

Distance focale effective (EFL)

Finite/Finite Conjugate

Power

Singlet Lens

How to Determine Magnification of an Optical Lens Setup

Understanding Collimation to Determine Optical Lens Focal Length

How to Form an Image with an Optical Lens Setup

Modifying Stock Optics Tip #4: Add A Coating To A Stock Lens

Irregularity

Radius of Curvature

BBAR Coating

Diopter

了解表面品質規格

Anti-Reflection (AR) Coating

Bevel

Seamed Edge

Introduction to Basic Ray Optics

Surface Flatness

Transmission

How do I clean my optics?

Clear Aperture (CA)

Refraction

Integration of Optical Systems

Stock and Custom Optics Manufacturing Capabilities

愛特蒙特光學遍佈全球的製造工廠

解析度與對比度限制：艾里斑