Array projector design for projection on arbitrarily curved surfaces

Stephanie Fischer; Peter Schreiber; Alf Riedel; Marcel Sieler

doi:10.1117/12.2191333

23 September 2015 Array projector design for projection on arbitrarily curved surfaces

Stephanie Fischer, Peter Schreiber, Alf Riedel, Marcel Sieler

Proceedings Volume 9626, Optical Systems Design 2015: Optical Design and Engineering VI; 96260D (2015) https://doi.org/10.1117/12.2191333
Event: SPIE Optical Systems Design, 2015, Jena, Germany

Abstract

The micro-optical array projector is a new and innovative possibility to project patterns onto arbitrary shaped surfaces¹ . In contrast to single-aperture systems the illuminance of the projected image is raised by only increasing the lateral extent of the projector while keeping the length constant. Thanks to the setup - analogous to a fly’s eye condenser – we obtain a very compact design with homogenization of illumination. The images to be projected are presented as arbitrarily curved CAD-objects. Because of its complexity, the first attempt was a chief-ray backtrace implemented into a CAD-program, with the individual projectorlets modelled as pinhole cameras. With this principle one can trace the slides for several applications like the projection on perpendicular, as well as tilted and curved surfaces. Since aberrations cannot be considered with the simple CAD backtrace described above, we used the commercially available raytracer Zemax®, controlled by a macro, working in conjunction with a CADprogram for improved slide mask generation. Despite both methods, depending on the complexity of the optical system, are generating the fundamental mask data, the paper will show that there is a tradeoff between calculation time and accuracy. Based on this evaluation we will discuss further development as well as the possibility of improvement concerning the calculation methods. The different methods were investigated to determine their advantages and disadvantages. This provides the basis for the scope of application. Further we will demonstrate simulations as well as results obtained with built demonstrators.

Citation Download Citation

Stephanie Fischer, Peter Schreiber, Alf Riedel, and Marcel Sieler "Array projector design for projection on arbitrarily curved surfaces", Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96260D (23 September 2015); https://doi.org/10.1117/12.2191333

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available