Analysis of ghost images in a compound prismatic combiner for head-up-displays

V. N. Vasilyev; G. E. Romanova; N. Y. Grishina; A. V. Bakholdin

doi:10.1117/12.2191118

23 September 2015 Analysis of ghost images in a compound prismatic combiner for head-up-displays

V. N. Vasilyev, G. E. Romanova, N. Y. Grishina, A. V. Bakholdin

Proceedings Volume 9626, Optical Systems Design 2015: Optical Design and Engineering VI; 96262U (2015) https://doi.org/10.1117/12.2191118
Event: SPIE Optical Systems Design, 2015, Jena, Germany

Abstract

Systems of augmented reality are widely used not only in military but and in civil application. Providing a sufficient size for the pupil zone, which is the area where the user’s eye could be located, may be implemented in different ways. One of the ways is to multiply (duplicate) the pupil using a beam-splitting with special coating or elements, for example with semi-transparent layers. This method is very attractive because it can provide the most compact schemes. The compound prismatic combiner which uses waveguide principle is considered and analyzed in the work. It was shown in previous work that the angles of the entrance prism and layers should be chosen in certain limits to provide beam passing through the structure due to total internal reflection, partially reflected by beam-splitting layers. This structure has mosaic structure of the pupil zone that means appearing the dark zones where the part of an image does not exist. To minimize dark zones the structure step should be minimal but the ghost images may appear. Dark zones size and brightness of the ghosts are dependent on the combiner’s parameters, so we can find optimal case as a compromise between the dark zone size and ghost image. Analysis of the ghosts’ brightness was implemented, and optimal locations of the observer’s eye and optimal structure parameters were found from the point of view of minimizing ghosts for the system with the smallest blind zone sizes.

Citation Download Citation

V. N. Vasilyev, G. E. Romanova, N. Y. Grishina, and A. V. Bakholdin "Analysis of ghost images in a compound prismatic combiner for head-up-displays", Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96262U (23 September 2015); https://doi.org/10.1117/12.2191118

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