Our full selection of microscope objectives can be used with all major brands of microscopes. Our matrix includes both DIN (Deutsches Institut für Normung) 45mm standard and JIS (Japan Industrial Standards) 36mm standard objectives. All optics are AR coated. DIN microscopes are configured for a 160mm tube length, and JIS microscopes for a 170mm tube length. DIN and JIS objectives can be interchanged, although the powers will not be equivalent (approximately 10% difference). All 20X to 100X objectives have spring-loaded (retractable) front ends in order to prevent slide damage. Oil immersion is recommended for all 100X objectives in order to achieve an NA higher than 1.0 (for typical use: low viscosity 150 cps, 0.5 oz. tube with nd=1.515).

JIS Objectives
Power	A	B	C	D	E
10X	29.7mm	20.0mm	8.5mm	11.0mm	17.0mm
20X	32.7mm	18.0mm	10.7mm	15.3mm	21.0mm
40X	35.5mm	18.0mm	10.7mm	15.3mm	21.0mm
60X	35.7mm	21.0mm	11.0mm	15.3mm	21.0mm
100X	35.9mm	21.0mm	10.8mm	15.3mm	21.0mm

商品名称

4X DIN Achromatic Intl Standard Objective
Type Achromatic
Magnification 4X
Effective Focal Length EFL (mm) 30.30
Field of View, 18 Diameter Field Eyepiece (mm) 4.50
Working Distance (mm) 15.80
Numerical Aperture NA 0.10
RoHS Not Compliant 
 
10X DIN Achromatic Intl Standard Objective
Type Achromatic
Magnification 10X
Effective Focal Length EFL (mm) 16.60
Field of View, 18 Diameter Field Eyepiece (mm) 1.80
Working Distance (mm) 6.30
Numerical Aperture NA 0.25
RoHS Not Compliant 
 
20X DIN Achromatic, Spring Loaded Intl Standard Objective 
Type Achromatic
Magnification 20X Spring Loaded
Effective Focal Length EFL (mm) 8.55
Field of View, 18 Diameter Field Eyepiece (mm) 0.90
Working Distance (mm) 3.30
Numerical Aperture NA 0.40
RoHS Not Compliant 
 
40X DIN Achromatic, Spring Loaded Intl Standard Objective 
Type Achromatic
Magnification 40X Spring Loaded
Effective Focal Length EFL (mm) 4.48
Field of View, 18 Diameter Field Eyepiece (mm) 0.45
Working Distance (mm) 0.52
Numerical Aperture NA 0.65
RoHS Not Compliant 
 
60X DIN Achromatic, Spring Loaded Intl Standard Objective 
Type Achromatic
Magnification 60X Spring Loaded
Effective Focal Length EFL (mm) 3.09
Field of View, 18 Diameter Field Eyepiece (mm) 0.30
Working Distance (mm) 0.28
Numerical Aperture NA 0.85
RoHS Not Compliant 
 
100X DIN Achromatic, Spring Loaded Intl Standard Objective
Type Achromatic
Magnification 100X Spring Loaded
Effective Focal Length EFL (mm) 1.90
Field of View, 18 Diameter Field Eyepiece (mm) 0.18
Working Distance (mm) 0.13
Numerical Aperture NA 1.25
RoHS Not Compliant 
 
4X DIN Semi-Plan Intl Standard Objective
Type Semi-Plan
Magnification 4X
Effective Focal Length EFL (mm) 29.80
Field of View, 18 Diameter Field Eyepiece (mm) 4.50
Working Distance (mm) 15.80
Numerical Aperture NA 0.10
RoHS Not Compliant 
 
10X DIN Semi-Plan Intl Standard Objective
Type Semi-Plan
Magnification 10X
Effective Focal Length EFL (mm) 15.26
Field of View, 18 Diameter Field Eyepiece (mm) 1.80
Working Distance (mm) 10.00
Numerical Aperture NA 0.25
RoHS Not Compliant 
 
40X DIN Semi-Plan, Spring Loaded Intl Standard Objective 
Type Semi-Plan
Magnification 40X Spring Loaded
Effective Focal Length EFL (mm) 4.39
Field of View, 18 Diameter Field Eyepiece (mm) 0.45
Working Distance (mm) 0.60
Numerical Aperture NA 0.65
RoHS Not Compliant 
 
100X DIN Semi-Plan, Spring Loaded Intl Standard Objective
Type Semi-Plan
Magnification 100X Spring Loaded
Effective Focal Length EFL (mm) 1.82
Field of View, 18 Diameter Field Eyepiece (mm) 0.18
Working Distance (mm) 0.16
Numerical Aperture NA 1.25
RoHS Not Compliant 
 
10X JIS Achromatic Intl Standard Objective 
Type Achromatic
Magnification 10X
Effective Focal Length EFL (mm) 16.60
Field of View, 18 Diameter Field Eyepiece (mm) 1.80
Working Distance (mm) 6.30
Numerical Aperture NA 0.25
RoHS Not Compliant 
 
20X JIS Achromatic, Spring Loaded Intl Standard Objective 
Type Achromatic
Magnification 20X Spring Loaded
Effective Focal Length EFL (mm) 8.55
Field of View, 18 Diameter Field Eyepiece (mm) 0.90
Working Distance (mm) 3.30
Numerical Aperture NA 0.40
RoHS Not Compliant 
 
40X JIS Achromatic, Spring Loaded Intl Standard Objective 
Type Achromatic
Magnification 40X Spring Loaded
Effective Focal Length EFL (mm) 4.48
Field of View, 18 Diameter Field Eyepiece (mm) 0.45
Working Distance (mm) 0.52
Numerical Aperture NA 0.65
RoHS Not Compliant 
 
60X JIS Achromatic, Spring Loaded Intl Standard Objective 
Type Achromatic
Magnification 60X Spring Loaded
Effective Focal Length EFL (mm) 3.09
Field of View, 18 Diameter Field Eyepiece (mm) 0.30
Working Distance (mm) 0.28
Numerical Aperture NA 0.85
RoHS Not Compliant 
 
100X JIS Achromatic, Spring Loaded Intl Standard Objective 
Type Achromatic
Magnification 100X Spring Loaded
Effective Focal Length EFL (mm) 1.86
Field of View, 18 Diameter Field Eyepiece (mm) 0.18
Working Distance (mm) 0.13
Numerical Aperture NA 1.25
RoHS Not Compliant