Kerr cell shutter 1970-01-01
Kinoform 1970-01-01
Kleinman symmetry 1970-01-01
Knapp's rule 1970-01-01
LBLRTM 1970-01-01
Laser & Photonics Reviews 1970-01-01
Laser Physics (journal) 1970-01-01
Laser detuning 1970-01-01
Lasing without inversion 1970-01-01
Leaky mode 1970-01-01
Least distance of distinct vision 1970-01-01
Lens sag 1970-01-01
Lenslet 1970-01-01
Lindberg (eyewear) 1970-01-01
Live MOS 1970-01-01
Long-Range Reconnaissance and Observation System 1970-01-01
Lummer–Gehrcke interferometer 1970-01-01
Lyot filter 1970-01-01
Lyot stop 1970-01-01
Martin diameter 1970-01-01