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.
