thin achromatic doublet
消色差薄双片透镜

• photoelectric mixer
• photoelectric mixing experiment
• photoelectric observation
• photoelectric photmeter
• photoelectric photmetry
• photoelectric pickoff
• photoelectric pyrometer
• photoelectric quadrupler
• photoelectric relay
• photoelectric senson
• photoelectric solid-state device
• photoelectric spectrometer
• photoelectric spectrophotometer
• photoelectric surface
• photoelectric threshold
• photoelectric transit nstrument
• photoelectric tube
• photoelectric yield
• photoelectro-luminescence
• photoelectrolytic cell
• photoelectromanetism
• photoelectrometer
• photoelectromotive force
• photo-electron
• photoelectronagnetic effect