Philips Indoor Luminaires Indoor Furnishings User Manual


  Open as PDF
of 78
 
Optic guide – Specications
Philips indoor luminairesTechnical data12.36
Innovative OLC optics
OLCstandsforOmnidirectionalLightControl,all-aroundlight
control.TheOLCopticsaredesignedtoobtainoptimallightingonthe
working plane and to limit undesired brightness spots, avoiding direct
andreectedglareallaroundtheluminaire.Thenewopenaluminum
OLCopticsC8,D8,C8-C,D8-C,C8-VHandD8-VHcomplementthe
C6,D6,M6,C7andD7range,andthenewdecorativeOLCoptics
AC-MLOandPC-MLOareclosed.Theyallcombineoptimalluminous
efcacyandlightdistributionwithexcellentall-roundglarecontrol.
New generation optics for TL5 lamps
Thecomputer-aideddesignedshapeofthesidereectorsin
combination with the advanced miniaturised 3-dimensional cross
lamellae with the broken arch contour are made of high-grade
aluminum.Theyhavegivenrisetonewopticalqualities:
•All-roundglarecontrolOLC1000cd/m
2
ofC8,D8,C8-VHand
D8-VH,orOLC200cd/m
2
ofC8-CandD8-C,isinaccordance
with the European standard on lighting of workplaces EN 12464-1.
Dependingontheapplication,theexceedinglyefcientopticsC8-VH
andD8-VH,theperformeropticsC8andD8,orthecomfortoptics
C8-CandD8-Ccanbeselectedfortheapplication.
• Although the width of the optic is very small, the direct glare from
the luminaire is well controlled and the UGR
R
limit of 19 is always
met.
• The light output ratio (LOR) is up to 94%, depending on the type of
mirror material, number of lamps per luminaire and lamp type.
• The wide-beam delta-shaped light distribution yields a high
uniformity of light at the working plane and a pleasant balance
between the horizontal and vertical illuminances.
• No disturbing luminance spots can be noticed for all optic versions
– a very smooth uniform appearance is produced by the comfort
versionC8-CandD8-C.
• Slim-line optics have an optical opening only 55 mm in width to
ensure they are inconspicuous in the ceiling; slim-line luminaires offer
the best aesthetical appearance.
Cross louver of OLC optics C8 and D8.
Notice the broken arch and the seam at the underside for improved efciency
and the fully enclosed convex top for optimal lighting control and higher efciency.
Optic guide – Specications
Previous generations of optics with a larger optical width like the
miniopticsC7andD7(opticalopeningof80mm)with3-Dlamellae
with curved upper side and concave underside result in slightly lower
efciencies.However,theirdirectandreectedglareguresremain
within the limits set in the standards. This also applies for the mini, the
midiandmaxiopticsC6,D6andM6(opticalopeningof80,100and
125 mm respectively) with their Fresnel structure on top of the cross
louvers.
Theseopticalfeaturescreatecomfortableandhighlyefcientofce
lighting:
•Flexibleofcedesignthankstoall-roundglarecontrol:computer
displays can be positioned anywhere in the room without the risk of
reectedglare.
• Thanks to the high light output ratio the lighting is very cost-effective
and less installation power is required to achieve the illuminance
specied.
• The delta-shaped light distribution ensures uniform lighting, even in
the case of wider or random luminaire spacing.
• No disturbing luminance spots means a high level of visual comfort.
Thewidechoiceofnishesforthehigh-gradealuminumusedforthe
optics, which are available in semi-high gloss D8, D7 and D6, high gloss
C8,C7andC6andmattM6,alwaysoffersanidealopticforevery
application, depending on personal preferences.
Matt mirror material (M) gives the luminaire a particular visual
presence in the ceiling, resulting in a certain extent of visual guidance.
Highglossspecularmaterial(C)reducesalldisturbingluminances
and produces a higher light output, however, this material is more
susceptibletodustpollutionandngerprints.
Semi-high-gloss mirror material (D) offers the best overall practical
value:thesatinmaterialhasalowvisualpresencewithoutbecominga
“darkspot”andisnotsensitivetosmallamountsofpollution.
Every trend – in this case low-brightness luminaires – creates a
counter-trend:visualguidanceandclearpresenceofthelighting
elements in the ceiling architecture can be achieved using the new
MLO optics.
Indoor_2008_Chapter_12_LIS.indb 36 20-05-2008 14:34:41
 previous next