Lock-in thermal IR imaging using a solid immersion lens

2006 ◽  
Vol 46 (9-11) ◽  
pp. 1508-1513 ◽  
Author(s):  
O. Breitenstein ◽  
F. Altmann ◽  
T. Riediger ◽  
D. Karg ◽  
V. Gottschalk
Author(s):  
O. Breitenstein ◽  
F. Altmann ◽  
T. Riediger ◽  
D. Karg ◽  
V. Gottschalk

Abstract A hemispherical silicon solid immersion lens (SIL) was used to improve the spatial resolution of front-side thermal IR imaging in lock-in mode. The bottom of the SIL was coneshaped to reduce the footprint of the SIL to the size of the imaged region. Caused by the lock-in operation mode, the detection limit improves by 2-3 orders of magnitude, and scattered light does not limit the image contrast. By using this SIL in combination with an IR camera working in the 3-5 μm wavelength range, a spatial resolution of 1.4 μm was obtained for thermal IR imaging. An automatic SIL positioning facility was constructed to place the SIL exactly in the center of the imaged region and to easily remove it after the detailed investigation.


Author(s):  
A.C.T. Quah ◽  
S.H. Goh ◽  
V.K. Ravikumar ◽  
S.L. Phoa ◽  
V. Narang ◽  
...  

Abstract The spatial resolution and sensitivity of laser induced techniques are significantly enhanced by combining refractive solid immersion lens technology and laser pulsing with lock-in detection algorithm. Laser pulsing and lock-in detection enhances the detection sensitivity and removes the ‘tail’ artifacts due to amplifier ac-coupling response. Three case studies on microprocessor devices with different failure modes are presented to show that the enhancements made a difference between successful and unsuccessful defect localization.


1995 ◽  
Vol 7 (1) ◽  
pp. 215-228 ◽  
Author(s):  
J. Rantala ◽  
D. Wu ◽  
G. Busse
Keyword(s):  

1982 ◽  
Vol 43 (5) ◽  
pp. 755-759 ◽  
Author(s):  
M. Bertault ◽  
M. Krauzman ◽  
M. Le Postollec ◽  
R.M. Pick ◽  
M. Schott

2012 ◽  
Vol 132 (11) ◽  
pp. 1033-1038
Author(s):  
Yuichiro Kai ◽  
Yuji Tsuchida ◽  
Takashi Todaka ◽  
Masato Enokizono

GIS Business ◽  
2007 ◽  
Vol 2 (1) ◽  
pp. 39-47
Author(s):  
Sunita Kumari ◽  
Bino Paul G.D.

We explore emerging contexts of social entrepreneurship in India. Social entrepreneurship is emerging as an important option in poverty reduction and social change wherein organizing societal responses to scenarios like entrenched deprivation, cumulative disadvantages, long extant institutional lock-in, and vulnerabilities enmeshed in social stratification, hiatus emanating from segmentation of labour market and inadequate coverage of social protection form the core of strategies/collectives/organisation. In this paper, first, drawing cues from the literature, we outline basic typology of social entrepreneurship while delineating pivotal role technology and collaboration play in social entrepreneurship. Second, we provide a glimpse of not profit organisations in India, based on the secondary data. We juxtapose select patterns from the data on non profit organisations with human development. Third, we discuss select cases of social entrepreneurship that diverge in characteristics and contexts, in particular how these initiatives work towards poverty reduction and social development.


2016 ◽  
Vol 58 (1) ◽  
pp. 31-35
Author(s):  
Philipp Myrach ◽  
Christiane Maierhofer ◽  
Markus Rahammer ◽  
Marc Kreutzbruck
Keyword(s):  

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