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20X DIN Achromatic Finite Intl Standard Objective

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Stock #33-438 3-4 days
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Design Wavelength DWL (nm):
546
Field of View (mm):
1
Focal Length FL (mm):
8.00
Length excluding Threads (mm):
41.70
Magnification:
20X
Maximum Diameter (mm):
25
Numerical Aperture NA:
0.40
Mounting Threads:
RMS / 20.32mm x 36 TPI
Compatible Tube Lens Focal Length (mm):
Focal Length: 160mm
Type:
Achromatic
Depth of Field (μm):
4.98
Field of View, 18 Diameter Field Eyepiece (mm):
0.90
Operating Temperature (°C):
+10 to +40
Operating Humidity:
Max 85% at 35°C with no condensation
Working Distance (mm):
0.8
Weight (g):
63.8
Wavelength Range (nm):
400 - 700
Style:
Finite Conjugate
Field Number (mm):
20
Parfocal Length (mm):
42.5
Immersion Liquid:
N/A

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:

Product Family Description

  • For Use with RMS Thread Microscopes
  • AR Coated Optics
  • 4X to 100X Magnifications Available

International Standard Microscope Objectives can be used with most major brands of microscopes that utilize RMS mounting threads. Our product offering features DIN 45mm standard objectives with achromatic and semi-plan designs. The achromatic design ensures proper color correction for broadband white light sources, while semi-plan designs have an added feature to create a flatter image field. International Standard Microscope Objectives include AR-coated optics to ensure maximum transmission and reduce internal reflections in the optical assembly. All 20X to 100X objectives have spring-loaded (retractable) front ends to prevent slide damage. 


Note: Oil immersion is recommended for all 100X objectives with an NA higher than 1.0 (part number #86-834). 

Technical Information

DIN Objectives - Achromatic
Magnification A B C
4X 23mm 24mm 21mm
10X 44.3mm 24mm 21.5mm
20X 47.5mm 24mm 22mm
40X 48.5mm 24mm 22mm
60X 48.1mm 24mm 22mm
100X 48.5mm 24mm 22mm
DIN Objectives - Micro-Plan
Magnification A B C
4X 34.3mm 25mm 21.5mm
10X 42.4mm 25mm 23mm
40X 48.1mm 25mm 23mm
100X 48.7mm 25mm 23mm