MA947 Strain Free Plan for Incident Light 20X Polarizing Brightfield Objective ? for MT9900

N.A. 0.40, F.L. 8.6mm, W.D. 5.2mmMeiji Techno MA947 Infinity corrected Strain Free Plan 20X Incident light Polarizing Upright Microscope Objective is made to the highest Japanese quality and optical standards, utilizing an Infinity Tube Lens Design F=200mm. Designed to meet the most advanced Polarizing and Geological imaging requirements. This objective represents the culmination of Meiji Techno’s Optical Japanese technology. 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 200 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 MA947  Strain free Plan 20X Infinity Corrected Optical System (I.C.O.S.) upright compound polarizing objective lens is also an option in our MT9900, MT9400, 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: ma947_strain_free_plan_incident_light_20x_objective Category:

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 Incident Light Series

  • A variety of Strain Free Plan Bright Field objective for Incident light illumination
  • 0.78mm – 5.20mm Working Distance for 20X to 50X 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

STRAIN FREE PLAN OBJECTIVES• MA935: Strain Free Plan Objective 4X ∞/ 0.17, N.A. 0.10, W.D. 15.3mm, F.N. 24 • MA936: Strain Free Plan Objective 10X ∞/ 0.17, N.A. 0.25, W.D. 10.67mm, F.N. 24 • MA936D: Strain Free Plan Objective 10X ∞/ 0.17, N.A. 0.25, W.D. 10.67mm, F.N. 24 • MA936DC: Strain Free Plan Objective 10X ∞/ 0.17, N.A. 0.25, W.D. 10.67mm, F.N. 24• MA937: Strain Free Plan Objective 20X ∞/ 0.17, N.A. 0.40, W.D. 7.29mm, F.N. 24 • MA937D: Strain Free Plan Objective 20X ∞/ 0.17, N.A. 0.40, W.D. 7.29mm, F.N. 24 • MA938: Strain Free Plan Objective 40X ∞/ 0.17, N.A. 0.65, W.D. 0.72mm, F.N. 24 • MA938D: Strain Free Plan Objective 40X ∞/ 0.17, N.A. 0.75, W.D. 0.72mm, F.N. 24 • MA939: Strain Free Plan Objective 60X ∞/ 0.17, N.A. 0.85, W.D. 0.20mm, F.N. 24 • MA940: Strain Free Plan Objective 100X ∞/ 0.17, oil, N.A. 1.25, W.D. 0.14mm, F.N. 24• MA947: Strain Free Plan Objective 20X ∞/ 0.17, N.A. 0.40, W.D. 5.20mm, F.N. 24 • MA948: Strain Free Plan Objective 40X ∞/ 0.17, N.A. 0.65, W.D. 0.781mm, F.N. 24 • MA994: Strain Free Plan Objective 50X ∞/ 0.17, N.A. 0.55, W.D. 5.0mm, F.N. 24 

Details

OBJECTIVE
MA935
MA936
MA936D
MA936DC
MA937 
MA937D
MA938
MA938D
MA939
MA940 (oil)
MA947
MA948
MA994

Type
Strain Free Plan Polarizing Objectives for Incident Light Work

Magnification
4X
10X
10X
10X
20X
20X
40X
40X
60X
100X
 20X
 40X
50X 

Numerical Aperture (N.A.) 
0.10
0.25
0.25
0.25
0.40
0.40
0.65
0.75
0.85
1.25
 0.40
0.65 
 0.55

Working Distance (W.D.)
15.3
10.67
10.67
10.67
7.29
7.29
0.72
0.72
0.20
0.14
5.20 
0.781 
5.0 

Focal Length (F.L.)
30.55
15.6
15.6
15.6
8.60
8.60
4.50
4.50
2.90
1.80
 8.60
4.50 
4.0 

Downloads

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

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

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

Double click to read at full screen Download How-To (PDF)

Specifications

MA947 Info:
Strain free Plan 20X objective ∞/ 0.17, N.A. 0.40, F.L. 8.6mm, W.D. 5.2mmMeiji Techno MA947 Infinity corrected Strain Free Plan 20X Incident light Polarizing Upright Microscope Objective is made to the highest Japanese quality and optical standards, utilizing an Infinity Tube Lens Design F=200mm. Designed to meet the most advanced Polarizing and Geological imaging requirements. This objective represents the culmination of Meiji Techno’s Optical Japanese technology. 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 200 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 MA947  Strain free Plan 20X Infinity Corrected Optical System (I.C.O.S.) upright compound polarizing objective lens is also an option in our MT9900, MT9400, Polarizing Upright Series.

Type 

 Strain Free for Incident Light (Polarizing)

Optical 

 Infinity Corrected ∞ Tube Lens 

Tube Length 

 F=200mm

Magnification 

 20X

Numerical Aperture (N.A.) 

 0.40

Focal Length (F.L.) 

 8.6mm

Working Distance (W.D.) 

 5.2mm

Parfocal Distance 

 45mm

Cover Slip Correction

 0.17mm

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"