Optimization of corrugated QWIPs for high-speed infrared imaging

2004 ◽  
Author(s):  
Kwong-Kit Choi ◽  
Kok Ming Leung ◽  
Theodor Tamir ◽  
Carlos Monroy ◽  
F. Wang ◽  
...  
Keyword(s):  
High Speed ◽  
Infrared Imaging

InGaAs based heterojunction phototransistors: Viable solution for high-speed and low-noise short wave infrared imaging

2019 ◽  
Vol 114 (16) ◽  
pp. 161101 ◽  
Author(s):  
Mohsen Rezaei ◽  
Min-Su Park ◽  
Cobi Rabinowitz ◽  
Chee Leong Tan ◽  
Skylar Wheaton ◽  
...  
Keyword(s):  
High Speed ◽  
Infrared Imaging ◽  
Short Wave ◽  
Low Noise ◽  
Viable Solution ◽  
Short Wave Infrared

Indium Antimonide (InSb) Focal Plane Array (FPA) Detection for Near-Infrared Imaging Microscopy

1994 ◽  
Vol 48 (5) ◽  
pp. 607-615 ◽  
Author(s):  
Patrick J. Treado ◽  
Ira W. Levin ◽  
E. Neil Lewis
Keyword(s):  
Indium Antimonide ◽  
High Speed ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Optical Microscope ◽  
Tunable Filter ◽  
Model Systems ◽  
High Spectral Resolution ◽  
Spectral Interval ◽  
Wide Range

Near-infrared spectroscopy is a sensitive, noninvasive method for chemical analyses, and its integration with imaging technologies represents a potent tool for the study of a wide range of materials. In this communication the use of an indium antimonide (InSb) multichannel imaging detector for near-infrared absorption spectroscopic microscopy is described. In particular, a 128 × 128 pixel InSb staring array camera has been combined with a refractive optical microscope and an acousto-optic tunable filter (AOTF) to display chemically discriminative, spatially resolved, vibrational spectroscopic images of biological and polymeric systems. AOTFs are computer-controlled bandpass filters that provide high speed, random wavelength access, wide spectral coverage, and high spectral resolution. Although AOTFs inherently have a wide range of spectroscopic applications, we apply this technology to NIR absorption microscopy between 1 and 2.5 μm. The spectral interval is well matched to the optical characteristics of both the NIR refractive microscope and the AOTF, thereby providing near-diffraction-limited performance with a practical spatial resolution of 1 to 2 μm. Design principles of this novel instrumentation and representative applications of the technique are presented for various model systems.

scholarly journals High-Speed Infrared Imaging for Characterization of the Additive Manufacturing Process

2018 ◽  
Author(s):  
M.-A. Langevin ◽  
A. Huot ◽  
S. Boubanga ◽  
P. Lagueux ◽  
É. Guyot
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Process ◽  
High Speed ◽  
Infrared Imaging

High-speed infrared imaging of flash mixing and streetview omnilens thermography

2018 ◽  
Author(s):  
Kimmo Solehmainen ◽  
Timo Kauppinen ◽  
Marko Rasi ◽  
Jouni Matula ◽  
Kari Peltonen ◽  
...  
Keyword(s):  
High Speed ◽  
Infrared Imaging

Infrared Temperature Measurements of the Blade Tip for a Turbine Operating at Corrected Engine Conditions

2020 ◽  
Author(s):  
Louis Christensen ◽  
Richard Celestina ◽  
Spencer Sperling ◽  
Randall Mathison ◽  
Hakan Aksoy ◽  
...  
Keyword(s):  
High Speed ◽  
Infrared Imaging ◽  
Wiener Filter ◽  
Infrared Camera ◽  
Measurement Procedure ◽  
Motion Blur ◽  
Lessons Learned ◽  
Main Flow ◽  
Test Facility ◽  
Cooling Flow

Abstract A high-speed infrared camera is used to measure the temperature of blade tips in a cooled high-pressure turbine operating at corrected engine conditions in The Ohio State University short duration Turbine Test Facility. These experiments create a challenging problem for infrared imaging since the rotor turns at over 13,000 rpm with tip speeds on the order of 300 m/s, and the surface temperature of the airfoils is on the order of 350 K. This means that the camera needs to capture a low intensity signal in a very short time period. This paper will review the design and operation of a measurement procedure to accomplish this difficult task along with the post-processing steps necessary to extract useful data. Raw infrared images are processed by deblurring the images using a non-blind Wiener filter and mapping the two-dimensional data onto the three-dimensional blade. This paper also describes experiments covering a range of cooling flow rates and main flow temperatures. In addition, several tests with no main flow and only cooling flow were performed at lower speeds to reduce motion blur and enable the separation of internal and external heat transfer information. Results show that the infrared data is consistent and can provide quantitative comparisons of cooling performance even at the high rotation speed. This paper presents the lessons learned for high-speed infrared measurement along with representative data to illustrate the repeatability and capability of the measurement scheme as well as suggested improvements to guide further development.

Noninvasive, high-speed, near-infrared imaging of the biomolecular distribution and molecular mechanism of embryonic development in fertilized fish eggs

2017 ◽  
Vol 11 (4) ◽  
pp. e201700115 ◽  
Author(s):  
Mika Ishigaki ◽  
Takashi Nishii ◽  
Paralee Puangchit ◽  
Yui Yasui ◽  
Christian W. Huck ◽  
...  
Keyword(s):  
Embryonic Development ◽  
Molecular Mechanism ◽  
High Speed ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Fish Eggs ◽  
Near Infrared Imaging
Sign in / Sign up

Export Citation Format

Share Document