Have you checked out SPIE Journals? All of which include Open Access articles:

Optical Engineering
Journal of Biomedical Optics
Journal of Electronic Imaging
Journal of Micro/Nanolithography, MEMS, and MOEMS
Journal of Applied Remote Sensing
Journal of Nanophotonics
Journal of Photonics for Energy

Additional Open Access SPIE Publications include:

• SPIE Reviews: virtual journals containing letters, review articles, and tutorials
• SPIE Newsroom: researcher-authored technical articles organized by topical interest area
• Fundamentals of Photonics: 10 tutorial modules written by experts
• SPIE Professional, the Society's quarterly member magazine: industry features and technology updates
• Optipedia: encyclopedic articles, including text, equations, and graphs originally published in SPIE Press books.