A first surface of the first scanning lens is formed with a spherical surface, a second surface of {HEAD ~ the first scanning lens} and third and fourth surfaces of the second scanning lens are formed with an a spherical toric surface having a rotating axis in {TAIL ~ the scan direction} 
A first surface of the first scanning lens is formed with a spherical surface , a second surface of { HEAD ~ the first scanning lens } and third and fourth surfaces of the second scanning lens are formed with an a spherical toric surface having a rotating axis in { TAIL ~ the scan direction }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL