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Masuyama Orthoscopic Eyepieces
Masuyama Orthoscopic Eyepieces

Masuyama Orthoscopic Eyepieces

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Eyepiece Focal Length
Product Code
Email us a question about this ProductMasuyama

Masuyama Orthoscopic 1.25" Eyepieces  

  • Classic Abbe Orthoscopic eyepieces – generally called “Masuyama Ortho”
  • Made in Japan
  • Manufacturer : Ohi Optical Manufacturing Co., Ltd.
  • Perfect eyepieces for solar viewing due to less number of lens surfaces and sharpness at the center of FOV
  • More affordable pair of eyepieces for binoscope or bino-viewer.
  • Ohi Optical, as known as Masuyama, has been producing the high quality eyepieces under their brand-name or 3rd party brands over 70 years at Ohi district in Tokyo besides Nikon factory.

Specifications: Masuyama Orthoscopic Eyepieces

Focal Length 4mm 5mm 9mm 12.5mm 18mm
Baffle Diameter (mm) 2.65 3.40 6.30 9.20 12.50
Eye Relief (mm) 3.35 4.05 7.61 10.41 15.21
Effective Lens Diameter (mm) 3.5 4.0 7.3 10.0 15.0
AFOV (°) 42 42 42 42 42


What's in the Box

What's in the Box: Masuyama Orthoscopic Eyepieces

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