MA642 SM Plan Strain Free 10X Objective ∞ Polarizing Transmitted Brightfield Finite Strain Free – ML9900, ML9400, ML9700

N.A. 0.25, F.L. 15.6mm, W.D. 6.7mmMeiji Techno MA642 Infinity corrected Strain Free Plan 10X Transmitted light Polarizing Upright Microscope Objective is made to the highest Japanese quality and optical standards, utilizing an Finite Tube Lens Design F=160mm. Designed to meet the most advanced Polarizing and Geological imaging requirements. This objective represents the culmination of Meiji Techno’s Optical Japanese technology made specifically for our ML9000, ML9400 and ML9700 Series. This objective offers increased brightness and the highest possible N.A. in its class for maximum light gathering ability. Designed to correct lateral and axial chromatic aberrations over the entire field of view. This objective produce images that are flat, crisp and clear with high contrast and optical resolution. This objective works with a wide array of applications. The stated magnification is based on a Tube lens of 160 mm. DIN Standard mounting threads is 0.7965” (20.1MM) Diameter threads, 36 TPI (Threads per inch), 55° Whitworth. This objective is compatible with all Infinity Corrected Optical System.The MA642 Strain free Plan 10X Infinity Corrected Optical System (I.C.O.S.) upright compound polarizing objective lens is also an option in our ML9000, ML9400, ML9700 Polarizing Upright Series.We understand the importance of having a Strain Free objective specially for use in most geological applications, to reduce spherical aberration and strain on the lens, tremendously improving the petrographic sample view.  Whether one is looking at a thin section mineral sample or interference figures. These samples are viewed with polarizing microscopes in mineralogy, geological, petrographic applications. When designing objectives it is critical for Meiji Techno Japanese Engineers to set the ultimate resolution limit of the optical microscope. The important factors is to include the wavelength of light used to illuminate the specimen sample, the angular aperture of the light cone being captured by the objective and as important is the refractive index in the object distance between the objective front lens and the specimen. Resolution can be measured as the minimum detectable distance between two closely spaced specimen points of interest. Note: Meiji Techno offers objectives made in our main factory by Meiji Techno in Saitama, Japan with strict ISO9001 standards and Japanese optical quality.  When choosing a proper microscope objective, it is important to keep in mind that objectives are designed to integrate with a particular microscope.  Before interchanging objectives, it is imperative to check the tube lens design and focal length and the threading type of the objective being replaced.  Please note that the optical performance of each objective may vary from the engraved specifications when integrated with components and systems from different microscope manufacturers.  Multiple optical factors including the microscope objective, tube lens and eyepiece together define the magnification of a system

SKU: ma642_semi_plan_strain_free_10x_objective Categories: , , , , ,

Description

The Brightfield Objective features include:
   • 100% MADE IN JAPAN

               • High Quality Strain free Plan Design

              • Flat image correction over entire field of view ( F.O.V.)

   • Brightfield Inspection
   • Computer-Aided-Design (CAD) objective
   •  Infinity Corrected Tube Lens Design, F=200mm
   • DIN Standard mounting thread is 0.7965”(20.1MM) diameter threads
   • 36 TPI (Threads per inch), 55° Whitworth
   • High quality optics designed by Meiji Techno Optical Engineers
   • Objectives composed of Numerous internal glass elements
   • Corrected for flatness of field
   • Uniform Quality and Glass formulations
   • Corrected for most common optical artifacts such as coma, astigmatism, geometrical abberation
   • Corrected for field curvature and spherical and chromatic aberration
   • Corrected for more aberrations over wider fields, but image flare has been dramatically reduced
   • Substantial increase in light transmission, yielding crisp and remarkably bright sharp images

Strain free Plan Polarizing Objective Transmitted Light Series

  • A variety of Strain Free Plan Bright Field objective for Incident light illumination
  • 0.10mm – 19.83 mm Working Distance for 4X to 100X Models
  • High Quality Plan Long Working Distance Objective Design
  • Flat Image Surface over Entire Field of View
  • Good Color Reproducibility
  • 100% Designed and Made in Japan

Additional information

Weight 1.0000 kg
Components & Accessories

DIN STANDARD POL OBJECTIVES FOR TRANSMITTED LIGHT• MA641: SM Plan Strain Free Objective 4X, N.A. 0.10, W.D. 19.83mm, F.N. 24 • MA642: SM Plan Strain Free Objective 10X, N.A. 0.25, W.D. 6.70mm, F.N. 24 • MA642D: SM Plan Strain Free Objective Free Dispersion Staining 10X, N.A. 0.25, W.D. 6.70mm, F.N. 24 • MA643: SM Plan Strain Free Objective 20X, N.A. 0.40, W.D. 1.80mm, F.N. 24• MA644: SM Plan Strain Free Objective 40X, N.A. 0.65, W.D. 0.40mm, F.N. 24 • MA645: SM Plan Strain Free Objective 60X, N.A. 0.85, W.D. 0.38mm, F.N. 24 • MA646: SM Plan Strain Free Objective 100XS oil, N.A. 1.25, W.D. 0.10mm, F.N. 24

Details

OBJECTIVE
MA641
MA642
MA642D
MA643
MA644 
MA645
MA646 oil

Type
DIN STANDARD POL OBJECTIVES FOR TRANSMITTED LIGHT

Magnification
4X
10X
10X
20X
40X
60X
100XS

Numerical Aperture (N.A.) 
0.10
0.25
0.25
0.40
0.65
0.85
1.25

Working Distance (W.D.)
19.83
6.70
6.70
1.80
0.40
0.38
0.10

Focal Length (F.L.)
30.55
15.6
15.6
8.60
4.50
2.90
1.80

Downloads

 

Double click to read at full screen Download Manual (PDF)
 

Double click to read at full screen Download Brochure (PDF)
 

Double click to read at full screen Download Chart (PDF)

Specifications

MA642 Info:SM Plan Strain Free 10X Objective, N.A. 0.25, F.L. 15.6mm, W.D. 6.7mmMeiji Techno MA642 Infinity corrected Strain Free Plan 10X Transmitted light Polarizing Upright Microscope Objective is made to the highest Japanese quality and optical standards, utilizing an Finite Tube Lens Design F=160mm. Designed to meet the most advanced Polarizing and Geological imaging requirements. This objective represents the culmination of Meiji Techno’s Optical Japanese technology made specifically for our ML9000, ML9400 and ML9700 Series. This objective offers increased brightness and the highest possible N.A. in its class for maximum light gathering ability. Designed to correct lateral and axial chromatic aberrations over the entire field of view. This objective produce images that are flat, crisp and clear with high contrast and optical resolution. This objective works with a wide array of applications. The stated magnification is based on a Tube lens of 160 mm. DIN Standard mounting threads is 0.7965” (20.1MM) Diameter threads, 36 TPI (Threads per inch), 55° Whitworth. This objective is compatible with all Infinity Corrected Optical System.
The MA642  Strain free Plan 10X Infinity Corrected Optical System (I.C.O.S.) upright compound polarizing objective lens is also an option in our ML9000, ML9400, ML9700 Polarizing Upright Series.

Type 

 Semi Plan Strain Free (Polarizing)

Optical 

 Finite (Non-Infinity) Tube Lens 

Tube Length 

 F=160mm

Magnification 

 10X

Numerical Aperture (N.A.) 

 0.25

Focal Length (F.L.) 

 15.6mm

Working Distance (W.D.) 

 6.7mm

Parfocal Distance 

 45mm

Cover Slip Correction

 -mm

Diameter Threads

 0.7965" (20.1mm) DIN Standard

TPI 

 36

Whitworth

 55°

Diameter (mm) 

 -mm

Length (mm) 

 -mm

Weight (g) 

 70g

Oil 

 ?

IS9001 

 ?

Product Information:    • Manufactured: 100% MADE IN JAPAN   • Warranty: LIMITED LIFETIME WARRANTY    • Customer Support: 1-(800) 832-0060 (U.S.A Based)Package Information:    • Weight:  Less than 1lb   • Box Size: 8" x 8" x 4"