Scientific Charge-Coupled Devices

Janesick, James R.

doi:10.1117/3.374903

Cited by 1,001 publications

(935 citation statements)

References 0 publications

Supporting

Mentioning

907

Contrasting

Unclassified

Order By: Relevance

“…Unlike single PDs or PMTs, the CCD sensor provides spatial information, i.e. it gives information about the distribution of the light intensity in an array of pixels (Janesick, 2001). In order to obtain a continuous spectrum, the incoming light is dispersed, normally by a diffraction grating.…”

Section: Photodetectors For Fniri Instrumentsmentioning

confidence: 99%

A review on continuous wave functional near-infrared spectroscopy and imaging instrumentation and methodology

Scholkmann¹,

Kleiser²,

Metz³

et al. 2014

NeuroImage

1,531

1,394

View full text Add to dashboard Cite

This year marks the 20th anniversary of functional near-infrared spectroscopy and imaging (fNIRS/fNIRI). As the vast majority of commercial instruments developed until now are based on continuous wave technology, the aim of this publication is to review the current state of instrumentation and methodology of continuous wave fNIRI. For this purpose we provide an overview of the commercially available instruments and address instrumental aspects such as light sources, detectors and sensor arrangements. Methodological aspects, algorithms to calculate the concentrations of oxy-and deoxyhemoglobin and approaches for data analysis are also reviewed. From the single-location measurements of the early years, instrumentation has progressed to imaging initially in two dimensions (topography) and then three (tomography). The methods of analysis have also changed tremendously, from the simple modified Beer-Lambert law to sophisticated image reconstruction and data analysis methods used today. Due to these advances, fNIRI has become a modality that is widely used in neuroscience research and several manufacturers provide commercial instrumentation. It seems likely that fNIRI will become a clinical tool in the foreseeable future, which will enable diagnosis in single subjects. This year marks the 20th anniversary of functional near-infrared spectroscopy and imaging (fNIRS/fNIRI). As the vast majority of commercial instruments developed until now are based on continuous wave technology, the aim of this publication is to review the current state of instrumentation and methodology of continuous wave fNIRI. For this purpose we provide an overview of the commercially available instruments and address instrumental aspects such as light sources, detectors and sensor arrangements. Methodological aspects, algorithms to calculate the concentrations of oxy-and deoxyhemoglobin and approaches for data analysis are also reviewed. From the single-location measurements of the early years, instrumentation has progressed to imaging initially in two dimensions (topography) and then three (tomography). The methods of analysis have also changed tremendously, from the simple modified Beer-Lambert law to sophisticated image reconstruction and data analysis methods used today. Due to these advances, fNIRI has become a modality that is widely used in neuroscience research and several manufacturers provide commercial instrumentation. It seems likely that fNIRI will become a clinical tool in the foreseeable future, which will enable diagnosis in single subjects. Contents

show abstract

Section: Photodetectors For Fniri Instrumentsmentioning

confidence: 99%

A review on continuous wave functional near-infrared spectroscopy and imaging instrumentation and methodology

Scholkmann¹,

Kleiser²,

Metz³

et al. 2014

NeuroImage

1,531

1,394

View full text Add to dashboard Cite

show abstract

“…For a general description of CCDs, particularly n-type, see Ref [8]. DECam is the instrument currently being built for the Blanco 4m Telescope at CTIO [9] that will be used for the Dark Energy Survey (DES) and will be available as a facility instrument at CTIO.…”

Section: Introductionmentioning

confidence: 99%

Measurements of charge diffusion in deep-depletion CCDs by optical diffraction

et al. 2007

View full text Add to dashboard Cite

The charge diffusion is measured in back illuminated, fully depleted, 250µm thick CCDs by imaging the diffraction pattern of a double slit. The CCDs studied are the focal plane detectors for the Dark Energy Camera (DECam) instrument currently under construction for the Dark Energy Survey (DES). The results presented here indicate that the dispersion of charge due to diffusion can be kept below the DES specification ( σ d < 7.0 µm ).

show abstract

“…4.6.2). Response at longer wavelengths increases strongly with temperature (Janesick 2001). If data are acquired over a large temperature range, inaccuracies in correction for temperature-dependent response will introduce systematic errors in spectral properties at 850-1,000 nm that ultimately could lead to false mineralogic interpretations.…”

Section: Optical Designmentioning

confidence: 99%

The Mercury Dual Imaging System on the MESSENGER Spacecraft

Hawkins¹,

Boldt²,

Darlington³

et al. 2007

The Messenger Mission to Mercury

View full text Add to dashboard Cite

The Mercury Dual Imaging System (MDIS) on the MESSENGER spacecraft will provide critical measurements tracing Mercury's origin and evolution. MDIS consists of a monochrome narrow-angle camera (NAC) and a multispectral wide-angle camera (WAC). The NAC is a 1.5°field-of-view (FOV) off-axis reflector, coaligned with the WAC, a fourelement refractor with a 10.5°FOV and 12-color filter wheel. The focal plane electronics of each camera are identical and use a 1,024 × 1,024 Atmel (Thomson) TH7888A chargecoupled device detector. Only one camera operates at a time, allowing them to share a common set of control electronics. The NAC and the WAC are mounted on a pivoting platform that provides a 90°field-of-regard, extending 40°sunward and 50°anti-sunward from the spacecraft +Z-axis-the boresight direction of most of MESSENGER's instruments. Onboard data compression provides capabilities for pixel binning, remapping of 12-bit data into 8 bits, and lossless or lossy compression. MDIS will acquire four main data sets at Mercury during three flybys and the two-Mercury-solar-day nominal mission: a monochrome global image mosaic at near-zero emission angles and moderate incidence angles, a stereocomplement map at off-nadir geometry and near-identical lighting, multicolor images at low incidence angles, and targeted high-resolution images of key surface features. These data will be used to construct a global image base map, a digital terrain model, global maps of color properties, and mosaics of high-resolution image strips. Analysis of these data will provide information on Mercury's impact history, tectonic processes, the composition and emplacement history of volcanic materials, and the thickness distribution and compositional variations of crustal materials. This paper summarizes MDIS's science objectives and technical design, including the common payload design of the MDIS data processing units, as well as detailed results from ground and early flight calibrations and plans for Mercury image products to be generated from MDIS data.

show abstract

Scientific Charge-Coupled Devices

Cited by 1,001 publications

References 0 publications

A review on continuous wave functional near-infrared spectroscopy and imaging instrumentation and methodology

A review on continuous wave functional near-infrared spectroscopy and imaging instrumentation and methodology

Measurements of charge diffusion in deep-depletion CCDs by optical diffraction

The Mercury Dual Imaging System on the MESSENGER Spacecraft

Contact Info

Product

Resources

About