The SPIE Digital Library is available to researchers and scientists on an annual subscription basis. Personal subscriptions represent a significant savings over single-paper purchases, and SPIE Members save even more.
Personal subscriptions offer download options of 25 or 50 full-text papers from the Digital Library, valid for a one-year period.
50 downloads / 1-year subscription
Nonmembers: $335 SPIE Members: $195 
25 downloads / 1-year subscription
Nonmembers: $250 SPIE Members: $145 
Once the form is successfully submitted and validated, you will receive an email confirmation with instructions for setting up your account. At that point you may begin using all features of the SPIE Digital Library.
Note: Student Members, Retired Members, and Members residing in a Special Consideration Country are eligible for a special subscription rate. Please contact SPIE Customer Service or fax/mail the PDF Subscription Form to subscribe to the Digital Library.