parfocal

adj.

等焦面的；

Parfocal
Parfocal coupler for endoscopic viewing system
Microscope Parfocal Adjustment Dominant eye
Why aren't all eyepieces parfocal?
Low Magnification Parfocal Microscope Objective
Parfocal Eyepieces / Dobsonian Booklet / Hextek / Gas Fusion Mirrors
Telecentric, parfocal, multiple magnification optical system for videoinspection apparatus
Design of diffractive-refractive dual-band co-path parfocal optical system
Visible/Infrared Dual-Band Large Field Shared-Aperture and Parfocal Optical System
[A comparative study of the effects of photocoagulation with krypton lasers in the parfocal or defocal systems]