Advanced features of SCD's uncooled detectors

• Autorzy: Fraenkel A. , Mizrahi U. , Bykov L. , Adin A. , Malkinson E. , Zabar Y. , Seter D. , Gebil Y. , Kopolovich Z.
• Konferencja: Infrared Photodetectors (IPH) ; (30-31.08.2005, Warsaw, Poland)
• Języki publikacji: EN

Abstrakty

EN

SCD has recently presented an uncooled detector product line based on the high-end VOx bolometer technology. The first FPA launched, BIRD, is a 384×288 (or 320×240) configurable format with 25 μm pitch. Typical NETD values for these FPAs range at 50 mK with an F/1 aperture and 60 Hz frame rate. These detectors also exhibit a relatively fast thermal time constant of approximately 10 ms. In this paper we elaborate on the special advanced features that were incorporated within the ROIC and supporting algorithms. In this framework we have addressed two important issues: the power consumption and the time span between shutter activations. Minimum power consumption is a critical issue for many un-cooled applications. SCD has addressed this by introducing the "power-save" concept accompanied with flexible dilution architecture. The paper will present recent results exhibiting the various advantages. One of the limiting factors on the performance of uncooled detectors is their vulnerability to ambient drift. Usually, even minor temperature fluctuations are manifested as high residual non-uniformity (RNU) or fixed pattern noise (FPN). As a result frequent shutter operations must be applied, with the risk of blocking the scenery in critical time frames. The challenge is thus twofold: to increase the time span between shutter corrections and achieve better control of its activation. For this purpose BIRD provides two complementing mechanisms: A real-time (frame-by-frame) ambient drift compensation accompanied by an RNU prediction mechanism. The paper will discuss these features in detail and present illustrative system implementations.

Słowa kluczowe

EN

uncooled FPA; VOx technology; power-save; ambient drift compensation; RNU prediction

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2006
• Tom: Vol. 14, No. 1
• Strony: 47--54
• Opis fizyczny: Bibliogr. 7 poz., il., wykr.

Twórcy

autor

Fraenkel A.

autor

Mizrahi U.

autor

Bykov L.

autor

Adin A.

autor

Malkinson E.

autor

Zabar Y.

autor

Seter D.

autor

Gebil Y.

autor

Kopolovich Z.

• Semi Conductor Devices (SCD), P.O. Box 2250, Haifa 31021, Israel,

Bibliografia

• 1. U. Mizrahi, "Uncooled development program at SCD", Proc. SPIE 5783, 551-558 (2003).
• 2. P.W. Kruse, Uncooled Thermal Imaging Arrays, Systems and Applications, SPIE Press, Bellingham, WA (2001).
• 3. O. Nesher, S. Elkind, A. Adin, I. Nevo, A.B. Yaakov, S. Raichshtain, A.B. Marhasev, A. Magner, M. Katz, T. Markovitz , D. Chen, M. Kenan A. Ganany, J.O. Schlesinger, and Z. Calahorra, "A digital cooled InSb detector for IR detection", Proc. SPIE 5074, 120 (2003).
• 4. O. Nesher, P.C. Klipstein, and E. Weiss, "Advanced IR detector design at SCD: from D3CTM to ABCS", Proc. SPIE 5359, 101-110 (2004).
• 5. P.E. Howard, J.E. Clarke, A.C. Ionescu, C. Li, and A. Frankenberger, "Advances in uncooled 1-mil pixel size focal plane products at DRS", Proc. SPIE 5406, 512-520 (2004).
• 6. "Performance specification of uncooled B-Kit module", Night Vision/RSTA, January 2003.
• 7. K. Grealish, T. Kacir, B. Backer, and P. Norton, "An advanced infrared imaging module for military and commercial applications", Proc. SPIE 5796, 186-192 (2005).