We present the discovery of four gravitationally lensed quasars selected from the spectroscopic quasar catalog of the Sloan Digital Sky Survey .
We describe imaging and spectroscopic follow-up observations that support the lensing interpretation of the following four quasars : SDSS J0832+0404 ( image separation \theta = 1 \farcs 98 , source redshift z _ { s } = 1.115 , lens redshift z _ { l } = 0.659 ) ; SDSS J1216+3529 ( \theta = 1 \farcs 49 , z _ { s } = 2.012 ) ; SDSS J1322+1052 ( \theta = 2 \farcs 00 , z _ { s } = 1.716 ) ; and SDSS J1524+4409 ( \theta = 1 \farcs 67 , z _ { s } = 1.210 , z _ { l } = 0.320 ) .
Each system has two lensed images .
We find that the fainter image component of SDSS J0832+0404 is significantly redder than the brighter component , perhaps because of differential reddening by the lensing galaxy .
The lens potential of SDSS J1216+3529 might be complicated by the presence of a secondary galaxy near the main lensing galaxy .