Proceedings of SPIE is the 25th out of 103 Optics journals. This Journal is the 685th out of 2,084 Physics journals. This Journal is the 3334th out of 11,479 Physical Sciences journals.
How are inpact factors calculated?
The impact factor (IF) is calculated by counting citations from peer-reviewed journals only.
extended IF also counts citations from books and conference papers. However, no patent, abstract, working papers, online documents, etc., are covered.