Landauer’s VISION Dosimeter

VISION®: Discrete and versatile multi-support lens dosimeter

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The International Commission on Radiological Protection (ICRP) recommends lowering lens of eye annual limit down to 20 mSv. This value has been included in the European directive 2013/59. In 2018, the directive is implemented in regulatory texts in most European countries.

The use of a lens dosimeter is specially recommended for potential dosing professional activities such as:

  • interventional radiology and nuclear medicine
  • imaging in veterinary practice
  • handling within glove boxes
  • maintenance operations in the nuclear industry
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Technical Specifications

Ergonomy and Hygiene

LANDAUER® has developed a lens dosimeter to assist you:

  • Ergonomic, compact and flexible: it adapts to all protection supports such as lead glasses, visors, caps, etc. It can be used behind lead glasses as close as possible to the eye without obstructing the view. VISION should be worn to the left or to the right of the eye, or in the middle of the glass.
  • Simple, fast and durable identification by laser engraving.
  • Easy to disinfect.

Firm fixation: two sizes are available to adapt to your personal protective equipment. The lens shifts from a horizontal position to a vertical position to adapt to your personal protective equipment and to your morphology.

VISION is the only lens dosimeter on the market certified by the French Accreditation Committee (COFRAC). It can measure Hp(3) photon dose to the lens from 0.1 mSv. Moreover, its high measuring dynamic and extreme accuracy allow dose measurement up to 10 Sv with a standard deviation greater than 9%. Its performance has been assessed and validated by the Laboratoire National Henri Becquerel (LNHB), an independent and accredited laboratory.
Type of radiation measured Results of VISION dosimeter
Photons Beta or electrons
Dose equivalent Hp(3)
Dose range 0.1 mSv to 10 Sv
Minimum reporting value 0.1 mSv
Linearity response 0.1 mSv to 10 Sv Standard deviation < 9%
Angular response ± 60° from 24 keV to 6MeV ± 45° ; 0.8 MeV (Emean)

Weight
M: 720 mg
L: 770 mg

Mean deviations
M: 4.6 mm
L: 7.6 mm

 

lens of eye dosimeter, two sizes available

Two sizes available

Manufacturer: Lens dosimeter designed and manufactured in France by LANDAUER

Detector: TLD badge (manufactured in accordance with LANDAUER’s specifications)

Badge material: LiF:Mg,Ti (magnesium and titanium doped lithium fluoride)

  • COFRAC NF EN ISO/IEC 17025 Certification: 2005, scope n°1-1545, available on www.cofrac.fr
  • Approved in Belgium by the FANC (Federal Agency for Nuclear Control)
  • Participation in national and international inter-comparisons
  • Dosimeter characterization completed by the Laboratoire National Henri Becquerel (LNHB) – CEA

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