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Table of Contents

Long working distance ("Series No.378")

These are the objectives people usually refer to. Edmund Optics seems to be the official distributor although I'm not sure they carry all types such as the BD Plan.

M Plan Apo

Wavelength correction: 436 nm - 656 nm

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um EO list price
M Plan Apo 1X 0.025 11.0 200 11.0 440 N/A
M Plan Apo 2X 0.055 34.0 100 5.0 91 869
M Plan Apo 5X 0.14 34.0 40 2.0 14 650
M Plan Apo 7.5X 0.21 35.0 26.67 1.3 6.2 1220
M Plan Apo 10X 0.28 34.0 20 1.0 3.5 819
M Plan Apo 20X 0.42 20.0 10 0.7 1.6 1899
M Plan Apo 50X 0.55 13.0 4 0.5 0.9 2490
M Plan Apo 100X 0.70 6.0 2 0.4 0.6 3190

M Plan Apo High Resolution (HR)

Wavelength correction: 436 - 656

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um EO list price
M Plan Apo HR 10X 0.42 15.0 20 0.6 1.55 7210
M Plan Apo HR 50X 0.75 5.2 4 0.4 0.48 5290
M Plan Apo HR 100X 0.90 1.3 2 0.3 0.34 5690

M Plan Apo Super Long (SL) working distance

Wavelength correction: 436 - 656

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um EO list price
M Plan Apo SL20x 0.28 30.5 10 1.0 3.5 2899
M Plan Apo SL50x 0.42 20.5 4 0.7 1.6 3050
M Plan Apo SL80x 0.50 15.0 2.5 0.6 1.1 3750
M Plan Apo SL100x 0.55 13.0 2 0.5 0.9 4500
M Plan Apo SL200x 0.62 13.0 1 0.4 0.7 9930

G Plan Apo

Wavelength correction: 436 - 656

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um
G Plan Apo 20x 0.28 29.42 “in air” 10 1.0 3.5
G Plan Apo 50x 0.50 13.89 “in air” 4 0.6 1.1

M Plan Apo NIR

Wavelength correction: 480 - 1800

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um
M Plan Apo NIR 5x 0.14 37.5 40 2.0 14.0
M Plan Apo NIR 10x 0.26 30.5 20 1.1 4.1
M Plan Apo NIR 20x 0.40 20.0 10 0.7 1.7
M Plan Apo NIR 50x 0.42 17.0 4 0.7 1.6
M Plan Apo NIR 100x 0.50 12.0 2 0.6 1.1

M Plan Apo NIR-HR

Wavelength correction: 480 - 1800

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um
M Plan Apo NIR-HR 50x 0.65 10.0 4 0.42 0.65
M Plan Apo NIR-HR 100x 0.70 10.0 2 0.39 0.56

LCD Plan Apo NIR

Wavelength correction: 480 - 1800

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um
LCD Plan Apo NIR 20x(t1.1) 0.40 19.98 “in air” 10 0.7 1.7
LCD Plan Apo NIR 50x(t1.1) 0.42 17.13 “in air” 3.9 0.7 1.6
LCD Plan Apo NIR 50x(t0.7) 0.42 17.26 “in air” 3.9 0.7 1.6
LCD Plan Apo NIR 100x(t0.7) 0.50 12.11 “in air” 2 0.6 1.1

M Plan Apo NUV

Wavelength correction: 355 - 620

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um
LCD Plan Apo NUV 20x 0.40 17.0 10 0.7 1.7
LCD Plan Apo NUV 50x 0.42 15.0 4 0.7 1.6
LCD Plan Apo NUV 100x 0.50 11.0 2 0.6 1.1

LCD Plan Apo NUV

Wavelength correction: 355 - 620

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um
LCD Plan Apo NUV 50x(t0.7) 0.42 14.76 “in air” 4 0.7 1.6
LCD Plan Apo NUV 50x(t1.1) 0.42 14.75 “in air” 4 0.7 1.6

M Plan UV

Wavelength correction: 266, 550

The important thing to know about these is that if you drop one on your foot you'll be balancing the hospital bill against the optics damage. At at list price of over $20,000 the 80X wins for most expensive COTS objective.

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm @ 266 nm f mm @ 550 nm Resolving power R um Depth of focus +/- DF um
M Plan UV 20x 0.36 15.0 10 10.4 0.8 2.1
M Plan UV 50x 0.40 12.0 4 4.5 0.7 1.7
M Plan UV 80x 0.55 10.0 2.5 2.9 0.5 0.9

BD Plan Apo

Wavelength correction: 436-656

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um
BD Plan Apo 2x 0.055 34.0 100 5.0 91
BD Plan Apo 5x 0.14 34.0 40 2.0 14
BD Plan Apo 10x 0.28 34.0 20 1.0 3.5
BD Plan Apo 20x 0.42 20.0 10 0.7 1.6
BD Plan Apo 50x 0.55 13.0 4 0.5 0.9
BD Plan Apo 100x 0.70 6.0 2 0.4 0.6

BD Plan Apo HR

Wavelength correction: 436-656

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um
BD Plan Apo HR 50x 0.75 5.2 4 0.4 0.48
BD Plan Apo HR 100x 0.90 1.3 2 0.3 0.24

BD Plan Apo SL

Wavelength correction: 436-656

Model Numerical Aperature (NA) Working distance (WD) mm Focal length f mm Resolving power R um Depth of focus +/- DF um
BD Plan Apo SL20x 0.28 30.5 10 1.0 3.5
BD Plan Apo SL50x 0.42 20 4 0.7 1.6
BD Plan Apo SL80x 0.50 13 2 0.6 1.1
BD Plan Apo SL100x 0.55 13 2 0.5 0.9

QV

For machine inspection. They look similar to the LWD objectives.

Misc

They do seem to make a few “standard” objectives.

Includes:

  • M50

References

2012 prices are from EO website on Feb 26, 2012

  1. “Long working distance objectives”. 99MBA113B3. Series No.378.
  2. Edmund optics: Mitutoyo infinity corrected long working distance objectives: http://www.edmundoptics.com/products/displayproduct.cfm?productid=1942
  3. Edmund optics: Mitutoyo NIR, NUV, UV: infinity corrected objectives: http://www.edmundoptics.com/products/displayproduct.cfm?productid=1950
microscope/mitutoyo/objective.1330253386.txt.gz · Last modified: 2013/10/20 14:59 (external edit)