Published by De Gruyter

Volume 2 Issue 2

Issue of Advanced Optical Technologies

Contents
Journal Overview

Masthead

Publicly Available April 3, 2013

Call for Papers

Publicly Available April 3, 2013

AOT – Advanced Optical Technologies

Page range: 117-117

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Community

Publicly Available March 25, 2013

News from the European Optical Society

Renowned experts to support EOS conferences in Munich

Page range: 119-120

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Publicly Available April 3, 2013

Conference Notes

Page range: 121-125

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Publicly Available April 3, 2013

Topical Issue: Image Sensors and Cameras

Editorial

Publicly Available April 3, 2013

Image sensors and cameras

Jochem Herrmann, Alexander Hornberg

Page range: 129-130

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Tutorials

Publicly Available April 3, 2013

Camera-based driver assistance systems

Michael Grimm

Page range: 131-140

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Abstract

In recent years, camera-based driver assistance systems have taken an important step: from laboratory setup to series production. This tutorial gives a brief overview on the technology behind driver assistance systems, presents the most significant functionalities and focuses on the processes of developing camera-based systems for series production. We highlight the critical points which need to be addressed when camera-based driver assistance systems are sold in their thousands, worldwide – and the benefit in terms of safety which results from it.

March 25, 2013

Review of up-to date digital cameras interfaces

Joachim Linkemann

Page range: 141-145

Abstract

Over the past 15 years, various interfaces on digital industrial cameras have been available on the market. This tutorial will give an overview of interfaces such as LVDS (RS644), Channel Link and Camera Link. In addition, other interfaces such as FireWire, Gigabit Ethernet, and now USB 3.0 have become more popular. Owing to their ease of use, these interfaces cover most of the market. Nevertheless, for certain applications and especially for higher bandwidths, Camera Link and CoaXPress are very useful. This tutorial will give a description of the advantages and disadvantages, comment on bandwidths, and provide recommendations on when to use which interface.

Review Article

April 3, 2013

High dynamic range CMOS (HDRC) imagers for safety systems

Markus Strobel, Dietmar Döttling

Page range: 147-157

Abstract

The first part of this paper describes the high dynamic range CMOS (HDRC ® ) imager – a special type of CMOS image sensor with logarithmic response. The powerful property of a high dynamic range (HDR) image acquisition is detailed by mathematical definition and measurement of the optoelectronic conversion function (OECF) of two different HDRC imagers. Specific sensor parameters will be discussed including the pixel design for the global shutter readout. The second part will give an outline on the applications and requirements of cameras for industrial safety. Equipped with HDRC global shutter sensors SafetyEYE ® is a high-performance stereo camera system for safe three-dimensional zone monitoring enabling new and more flexible solutions compared to existing safety guards.

Research Articles

March 14, 2013

Color sensitivity of the multi-exposure HDR imaging process

Boris Lenseigne, Valéry Ann Jacobs, Martijn Withouck, Peter Hanselaer, Pieter P. Jonker

Page range: 159-169

Abstract

Multi-exposure high dynamic range(HDR) imaging builds HDR radiance maps by stitching together different views of a same scene with varying exposures. Practically, this process involves converting raw sensor data into low dynamic range (LDR) images, estimate the camera response curves, and use them in order to recover the irradiance for every pixel. During the export, applying white balance settings and image stitching, which both have an influence on the color balance in the final image. In this paper, we use a calibrated quasi-monochromatic light source, an integrating sphere, and a spectrograph in order to evaluate and compare the average spectral response of the image sensor. We finally draw some conclusion about the color consistency of HDR imaging and the additional steps necessary to use multi-exposure HDR imaging as a tool to measure the physical quantities such as radiance and luminance.

April 3, 2013

Eight considerations when evaluating a smart camera

Carlton Heard

Page range: 171-175

Abstract

With the increase in performance and decrease in cost, smart cameras have become increasingly more accessible over the past decade. Given this trend, how do you determine which smart camera best meets your needs or decide if a smart camera is appropriate for your application? Learn about the top eight considerations you do not want to forget when selecting a smart camera, including application examples and alternative solutions.

March 25, 2013

Global shutter pixels with correlated double sampling for CMOS image sensors

Guy Meynants

Page range: 177-187

Abstract

This article describes the operation and performance of global shutter pixels with correlated double sampling for CMOS image sensors. Correlated double sampling is required to keep the read noise at a level comparable to interline transfer CCDs. A pixel with voltage domain in-pixel sampling of the floating diffusion reset and signal levels is explained and its noise performance is modeled. The saturation level of this pixel is analyzed and parasitic light sensitivity is discussed. The pixel is benchmarked against other global shutter pixels that allow correlated double sampling, based upon charge domain in-pixel storage.

Research Article

November 29, 2012

Practical optimization of a coating deposition process by application of hybrid monitoring strategies in an industrial production environment

Mario Held, Steffen Wilbrandt, Olaf Stenzel, Norbert Kaiser, Andreas Tünnermann

Page range: 189-196

Abstract

The applicability of broadband optical monitoring to an industrial optical coating production environment is investigated. Different monitoring strategies have been applied to the deposition of beamsplitters and longpass edge filters by electron beam evaporation without any plasma or ion assistance. While the shift and reproducibility in the optical constants were poorly specified, pure optical broadband monitoring of the coatings did not prove superior to traditional quartz crystal monitoring. On the contrary, the introduction of a hybrid monitoring strategy that combines quartz crystal and broadband optical monitoring led to significant improvements in the coating performance reproducibility compared to a pure quartz crystal monitoring approach. Accompanying computational manufacturing experiments performed for the beamsplitter design reveal the same trend.

About this journal

Objective

Advanced Optical Technologies is a strictly peer-reviewed scientific journal. The major aim of Advanced Optical Technologies is to publish recent progress in the fields of optical design, optical engineering, and optical manufacturing. Advanced Optical Technologies has a main focus on applied research and addresses scientists as well as experts in industrial research and development.

Advanced Optical Technologies partners with the European Optical Society (EOS). All its 4.500+ members have free online access to the journal through their EOS member account.

Topics

Optical design
Lithography
Opto-mechanical engineering
Illumination and lighting technology
Precision fabrication
Image sensor devices
Optical materials (polymer based, inorganic, crystalline/amorphous)
Optical instruments in life science (biology, medicine, laboratories)
Optical metrology
Optics in aerospace/defense
Simulation, interdisciplinary
Optics for astronomy
Standards
Consumer optics
Optical coatings

Article formats
Tutorial, Review Article, Research Article, Letter, Short Communication, Views

> Information on submission process

Volume 2 Issue 2

Issue of Advanced Optical Technologies

Masthead

AOT – Advanced Optical Technologies

News from the European Optical Society

Renowned experts to support EOS conferences in Munich

Conference Notes

Conference Calendar

Image sensors and cameras

Camera-based driver assistance systems

Abstract

Review of up-to date digital cameras interfaces

Abstract

High dynamic range CMOS (HDRC) imagers for safety systems

Abstract

Color sensitivity of the multi-exposure HDR imaging process

Abstract

Eight considerations when evaluating a smart camera

Abstract

Global shutter pixels with correlated double sampling for CMOS image sensors

Abstract

Practical optimization of a coating deposition process by application of hybrid monitoring strategies in an industrial production environment

Abstract