Curved sensors for compact high-resolution wide field designs

Over the recent years, a huge interest has grown for curved electronics, particularly for opto-electronics systems. Indeed, curved sensors help the correction of off-axis aberrations, such as Petzval Field Curvature and astigmatism. In this paper, we describe benefits of curvature and tunable curvature on an existing fish-eye lens. We proposed a new design architecture, compact and with a high resolution, developed specifically for a curved image sensor. We discuss about aberrations and effect of higher sensor curvature on third order aberrations. Besides, we show results of sensors’ mechanical limits and its electro-optical characterization. Finally, all these experiments and optical results demonstrate the feasibility and high performances of systems with curved sensors.

[1]  AVID,et al.  Combining freeform optics and curved detectors for wide field imaging : a polynomial approach over squared aperture , 2017 .

[2]  K. Itonaga,et al.  A novel curved CMOS image sensor integrated with imaging system , 2014, 2014 Symposium on VLSI Technology (VLSI-Technology): Digest of Technical Papers.

[3]  Jose Sasian,et al.  Optical analysis of miniature lenses with curved imaging surfaces. , 2015, Applied optics.

[4]  G. Lemaitre,et al.  Astronomical Optics and Elasticity Theory: Active Optics Methods , 2008 .

[5]  Peter Brewer,et al.  Highly curved image sensors: a practical approach for improved optical performance , 2017, Optics express.

[6]  E. L. le Coarer,et al.  Curved focal plane detector array for wide field cameras. , 2012, Applied optics.

[7]  嶋田 俊之.  Zoom lens, and an optical apparatus including the zoom lens , 2007 .

[8]  J. Ford,et al.  Optimization of two-glass monocentric lenses for compact panoramic imagers: general aberration analysis and specific designs. , 2012, Applied optics.

[9]  C. H. Chen,et al.  Evaluation of test methods for silicon die strength , 2008, Microelectron. Reliab..

[10]  Christophe Gaschet,et al.  Flexible focal plane arrays for UVOIR wide field instrumentation , 2017, International Conference on Space Optics.

[11]  V. Gupta,et al.  Experimental Evaluations of the Strength of Silicon Die by 3-Point-Bend Versus Ball-on-Ring Tests , 2008, IEEE Transactions on Electronics Packaging Manufacturing.

[12]  Sidney Ray,et al.  Applied photographic optics , 1998 .

[13]  E. Hugot,et al.  Tunable Curvature of Large Visible CMOS Image Sensors: Towards New Optical Functions and System Miniaturization , 2016, 2016 IEEE 66th Electronic Components and Technology Conference (ECTC).

[14]  M. Ferrari.  Development of a variable curvature mirror for the delay lines of the VLT interferometer , 1998 .