MachineU > China Products
Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools
Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools
Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools
Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools
Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools
Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools
Specifications
Brand Name :
LONGWAY
Model Number :
LW16092213
Certification :
ISO9001
Place of Origin :
Shanghai, China
MOQ :
800 pcs
Price :
negociation
Payment Terms :
D/P,T/T,Western Union
Supply Ability :
35000 Piece/Pieces per Month
Packaging Details :
electrolytic capacitor paper, foam, carton, pallet
Structure :
Double Convex
Name :
Optical Bi-Convex Lens
Transmission :
over 92%
Coating :
available
Processing :
grinding and polishing
Application :
Optics and lighting
OEM :
available
Usage :
Optics
Description



Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools


1. Material & Manufacturing

  • Optical Substrate: Schott N-BK7 borosilicate glass (standard reference 517642)

  • Surface Precision:

    • λ/4 surface accuracy @ 632.8nm

    • 60-40 scratch-dig specification

  • Coating Options: Broadband AR (MgF₂ or multilayer) for >99.5% peak transmission


2. Critical Properties

  • Optical Performance:

    • >92% transmission (350nm–2.0μm uncoated)

    • Abbe number 64.2 (minimizes chromatic aberration)

  • Thermal/Mechanical Stability:

    • CTE: 7.1 × 10⁻⁶/K

    • Knoop hardness: 610 kg/mm²

  • Precision Tolerances:

    • Focal length: ±1%

    • Center thickness: ±0.05 mm

    • Centration: < 3 arcminutes


3. Core Functions

  • Beam Convergence: Short focal lengths (10–200mm) for high-power focusing

  • Aberration Correction: Bi-convex design reduces spherical distortion vs. plano-convex alternatives

  • Collimation: Converts point sources to parallel light for illumination systems

  • Image Magnification: 2X–20X capability for detailed inspection


4. Professional Applications

  • Microscopy Systems:

    • Objective lenses in biological/industrial microscopes

    • Condenser optics for Köhler illumination

  • Laser Tools:

    • Focusing lenses for medical lasers (dermatology/surgery)

    • Beam expanders in fiber laser cutters

  • Industrial Equipment:

    • Barcode scanner optics

    • Machine vision inspection lenses

  • Scientific Instruments:

    • Telescope eyepieces

    • Spectrometer collimators



Name optical glass

Material

 Optical Glass,Bk-7,Pyrex,Fused Silica,Sapphire,quartz
Diameter Tolerance +0/-0.2 mm
Thickness Tolerance +/-0.2 mm
Cler Aperture over 90%
Flatness ^/4 @632.8nm
Surface Quality 80/50~10/5 scratch and dig
Transmission above 92%
Chamfer 0.1-0.3 mm x 45 degree
Focal Length Tolerance +/-2%
Back Focal Length Tolerance +/-2%
Coating available
Usage

opticl system, photographic sysem, Lighting system,Electronic apparatuse.g.laser,camera,monitor,projector,magnifier,

telescope,polarizer,electronic instrument,led etc.

Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools


Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools


Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools



Send your message to this supplier
Send Now

Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools

Ask Latest Price
Watch Video
Product Detail
Brand Name :
LONGWAY
Model Number :
LW16092213
Certification :
ISO9001
Place of Origin :
Shanghai, China
MOQ :
800 pcs
Price :
negociation
Contact Supplier
video
Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools
Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools
Precision N-bk7 Optical Glass Bi-convex Lens For Microscopes & Tools

Shanghai Longway Special Glass Co., Ltd.

Verified Supplier
1 Years
shanghai, shanghai
Since 2008
Business Type :
Manufacturer, Agent, Exporter, Trading Company, Seller
Main Products :
Optical Glass Lens, Borosilicate Glass Lens, Glass Led Lens
Total Annual :
1000000-5000000
Employee Number :
30~100
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Optical Glass Lens
MachineU China Products
Contact Supplier
Submit Requirement