ILSC 2011 Paper #101 (Orientation Guide for Laser Safety Standard Users)

Orientation Guide for Laser Safety Standard Users
Authors:
Werner Horak, Siemens AG; Munich Germany
Ronald Neuhaus, Siemens AG; Munich Germany
Presented at ILSC 2011

The task of extracting the appropriate assessment conditions for classification can be rather challenging. The safety philosophies of the different laser classes are dedicated to address several worst case use conditions. Virtually, there are up to seven laser classes available. Four of them, where the safety philosophy comprises optically aided viewing, would even require two different assessment conditions (conditions 1 and 2 in terms of IEC 60825-1). At which condition 1 is intended to situations where telescopes et...

ILSC 2011 Paper #102 (IEC TR 60825-5 Ed. 3.0 Manufacturer's Checklist - A Guide for Manufacturers Documenting Compliance with IEC 60825-1:2007 Compliance)

IEC TR 60825-5 Ed. 3.0 Manufacturer’s Checklist – A Guide for Manufacturers Documenting Compliance with IEC 60825-1:2007 Compliance
Authors:
Woody Strzelecki, Food and Drug Administration; Silver Spring MD USA
Presented at ILSC 2011

A release of IEC 60825-1:2007 necessitated to upgrade IEC TR 60825-5:2003. The new edition of the Technical Report reflects modification of the new standard relative to IEC60825-1:2001 such as the removal of LEDs from the scope of the standard for most products, modification of the definition of the apparent source size, fail safe and fail safe safety interlock definitions, human access, most restrictive position, manual reset, beam stop and attenuator, walk-in ...

ILSC 2011 Paper #103 (The Widely Varying Risk from Class 3R Laser Products in Light of the Revision of IEC 60825-1)

The Widely Varying Risk from Class 3R Laser Products in Light of the Revision of IEC 60825-1
Authors:
Karl Schulmeister, Seibersdorf Laboratories; Seibersdorf Austria
Presented at ILSC 2011

The current state of the characterisation of the risk from Class 2 and Class 3R laser products is discussed. We distinguish exposure to cw lasers from pulsed lasers, and we also distinguish between classification as small source (C-sub6 equal to 1) or classification as extended source. Due to the dependence of the damage threshold on exposure duration, Class 2 exposure does not appear to be able to induce retinal injury by thermal pathway even for exposure durations of several seconds. Class 2 can therefor...

ILSC 2011 Paper #1102 (Assessing Audience Exposure at Laser Shows)

Assessing Audience Exposure at Laser Shows
Authors:
Michael Higlett, Health Protection Agency; Didcot Great Britain
John O'Hagan, Health Protection Agency; Didcot Great Britain
Presented at ILSC 2011

Lasers have been used in live entertainment since the 1970s. A high power laser beam is required to form visual effects of large image patterns generated by moving the laser beam by computer-controlled galvanometers. Many laser companies promote audience scanning. However, some patterns require the same location to be repeatedly scanned, which may lead to the potential for injury, particularly to the eye, where a person receives a burst of laser pulses as the pattern passes across the ...

ILSC 2011 Paper #1104 (MATILDA: A Laser Range Hazard Assessment Utility)

MATILDA: A Laser Range Hazard Assessment Utility
Authors:
Brian Flemming, SELEX Galileo Ltd; Edinburgh Great Britain
Daniel Huantes, TASC, Inc.; San Antonio USA
Paul Kennedy, US Air Force Research Lab; Brooks City-Base TX USA
Presented at ILSC 2011

A jointly-owned utility the Military Advanced Technology Integrated Laser Hazard Assessment (MATILDA) system is being developed under the auspices of a Memorandum of Understanding between the US and the UK. This paper provides an update on progress in developing the MATILDA utility.
The United Kingdom Ministry of Defence has had long experience in developing and applying probabilistic risk assessment (PRA) methods ...

ILSC 2011 Paper #1201 (Blue Light Hazard Evaluation Based On The Luminance Of Light Sources)

Blue Light Hazard Evaluation Based On The Luminance Of Light Sources
Authors:
Jian Zheng, Zhejiang University; Hangzhou Peoples Republic of China
Junkai Li, SENSING Instruments Co., Ltd; Hangzhou Peoples Republic of China
Mou Tongsheng, Zhejiang University; Hangzhou Peoples Republic of China
Presented at ILSC 2011

Blue Light takes various effects in the human vision. Several physical parameters, as luminance, chromaticity, circadian radiance and weighted radiance of retinal photochemical damage could be quantitative. In the safety standard IEC62471, the threshold of the retinal blue light hazard and the assessment methods of the weighted radiance were specified, but it...

ILSC 2011 Paper #1203 (Expected Changes for the Retinal Thermal Exposure Limits for Broadband Incoherent Radiation of IEC 62471 and ICNIRP)

Expected Changes for the Retinal Thermal Exposure Limits for Broadband Incoherent Radiation of IEC 62471 and ICNIRP
Authors:
Karl Schulmeister, Seibersdorf Laboratories; Seibersdorf Austria
Presented at ILSC 2011

Broadband Radiation Session Please!

Based on recent research, the exposure limit for retinal thermal injury can be updated in terms of wavelength dependence, spot size dependence and basic time dependence. The update is to be published by ICNIRP, the International Commission on Non-Ionizing radiation protection in 2011. In parallel, IEC 62471 and CIE S009 are to adopt their emission limits accordingly.

ILSC 2011 Paper #1204 (The Standardization and Regulation of Photobiological Safety for Non-Laser Sources in China)

The Standardization and Regulation of Photobiological Safety for Non-Laser Sources in China
Authors:
Jianping Wang, SENSING Instruments Co., Ltd; Hangzhou Peoples Republic of China
Junkai Li, SENSING Instruments Co., Ltd; Hangzhou Peoples Republic of China
Mou Tongsheng, Zhejiang University; Hangzhou Peoples Republic of China
Presented at ILSC 2011

The industries of new sources e.g. LED lighting are developing rapidly in recent years in China, photobiological safety of the non-laser radiation light sources has been paid more and more attentions; The issuance of IEC Standards and the European Council Regulations related to photobiological safety has greatly accelerated ...

ILSC 2011 Paper #1301 (An Audit of Laser Safety in Universities: A Comparison to Medical Laser Safety)

An Audit of Laser Safety in Universities: A Comparison to Medical Laser Safety
Authors:
Stanley Batchelor, Medical Physics Department, Guy's & St Thomas' NHS Foundation Trust; London Great Britain
Sharmila Franks, Medical Physics Department, Guy's & St Thomas' NHS Foundation Trust; London Great Britain
Graham Hart, Graham Hart YourRPA- Independent Radiation & Laser Protection Adviser; West Yorkshire Great Britain
Presented at ILSC 2011

There has been a history of laser accidents in Universities, sometimes with serious consequences. These have occurred due to a range of issues, including: the wide range of available laser equipment, often acquired without the knowledge ...

ILSC 2011 Paper #1303 (Hidden Menace: Recognizing and Controlling the Hazards Posed by Smaller and Lower Power Lasers)

Hidden Menace: Recognizing and Controlling the Hazards Posed by Smaller and Lower Power Lasers
Authors:
Samuel M. Goldwasser, Laser Teaching Center, Stony Brook University; Stony Brook NY USA
Ben Edwards, Duke University Medical System; Durham NC USA
Presented at ILSC 2011

The hazards of high power lasers are well recognized, and the necessity for controlling these hazards justifiably enjoys wide consensus. However, physically small lasers, or those with relatively low output power (e.g. Class 3B), can also present significant safety issues. The safety aspects of such small or lower power lasers often suffer from neglect because of the tendency to downplay, ignore, or simply fai...