ISO 9680:2014 pdf free

ISO 9680:2014 pdf free.Dentistry一Operating lights
Aim the light beam at a measuring screen, perpendicular to the optical axis, at a distance of 700 mm measured from the external most forward part of the operating light from which light is emitted.
Adjust the controls for ilumination during the tests at the setting of the maximum iluminance level.
Establish a rectangular coordinate system in the measurement plane with the origin of coordinates (i.e.the coordinate axis intersection point) centrally placed in the zone of maximum ilumination level and with the x-axis parallel to the major axis of the light beam. If there is a marked cut-off in the y-direction, take this as the positive direction.
For tests specifying visual assessment of the ilumninance pattern, place a flat white screen in the measurement plane. For tests requiring instrumented measurements, place the specified detector in the measurement plane.
Perform optical tests in ambient lighting not exceeding 30 lx.
If an operating light is designed to be used at a distance other than 700 mm, the manufacturer shall state the intended operating distance in the instructions for use and include additional optical measurements at the intended operating distance in the technical description.
Use the test set-up as described in 7.3.1.
Measure the iluminance levels with a photometer calibrated in accordance with CIE 69 and having an active cell with a diameter of 10 mm.
Moving the photometer within the measurement plane, make measurements at rectilinear coordinates not more than 5 mm apart, such that all points within the illuminance pattern having illuminance greater than 600 lx are measured.
Record the measurements and their location. Check whether the requirements given in 5.2.1, 5.2.2.1 and 5.2.3 are fulilled. Use linear interpolation of measurements for determining specified isolux contours.
Use the test set-up as described in 7.3.1 with a calibrated photometer as described in 7.3.2. Moving the photometer in the measurement plane along the line 60 mm above the centre line of area A, make measurements at increments not more than 5 mm apart, such that all points along the line having illuminance greater than 600 lx are measured.
Place a flat white screen in the measurement plane. Observe whether there are areas of brightness above the horizontal line 60 mm above the centre of area A when viewed by a person with normal visual acuity at a distance of 50 cm to 75 cm. If any areas appear brighter than along the horizontal line 60 mm above the centre of area A, measure the iluminance in those areas using a calibrated photometer, as described above.
Record the measurements and their location. Check whether the requirement specified in 5.2.3 is fufilld.ISO 9680 pdf download.