Manufacturing method of eyepiece optical system, optical equipment and eyepiece optical system

摘要

Provided are an eyepiece optical system EL having a large observation magnification and good optical performance, an optical device having this eyepiece optical system EL, and a method for manufacturing the eyepiece optical system EL. In the eyepiece optical system EL, in order from the observation object side, a first lens component having a positive refractive power, a second lens component having a negative refractive power, a third lens component having a positive refractive power, and positive It has a fourth lens component having an optical power and satisfies the condition of the following equation. 0.01 fe / f4 0.33 However, fe: Focal length of the entire eyepiece optical system EL f4: Focal length of the fourth lens component G4 The "lens component" means a single lens or a junction lens.