Philips Indoor Luminaires Indoor Furnishings User Manual


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Optic guide – Specications
Technical data
Philips indoor luminaires Technical data 12.37
All-round glare control Delta-shaped light distribution
Micro Lens Optics (MLO)
AlternativesfortheopenaluminumOLCopticsaretheMicroLens
OpticsAC-MLO(acrylate)andPC-MLO(polycarbonate).Theiroptical
technique is quite different, although they are based on more or less
identicallightingspecicationstheirappearanceiscompletelydifferent.
• The decorative but uniform optical covers are made of patented
Micro Lens Optics.
•All-roundglarecontrolOLC1000cd/m
2
, with average luminance
< 1000 cd/m
2
forg≥65ºinalldirections,isinaccordancewiththe
European standard on workplaces EN 12464-1. This is realised by the
typical conical element with 108 degrees top angle and small inverse
top moulded in a regular square pattern. In all directions, the same
luminance cut-off in combination with a very low luminance between
65 and 90 degrees from the vertical is realised. The limits are
achieved by applying dedicated MLO material per lamp type, which
differsforTL5HEandTL5HOlamps.
• MLO provides the option to mix the light of different lamp colors,
e.g. warm-white and cool-white or daylight, at will or continuously,
in order to realise individual color temperature control or Dynamic
Lighting. The overall light color appearance of the luminaire, when
ttedwithdifferentlampcolorsremainsuniformwhicheverratioof
warm-white to cool-white light is chosen by the end user.
The different color tones from the different lamps are perfectly
mixed.
• ‘Visible’ light, the MLO optics realise a strong architectural
appearance at the ceiling of the application area and contribute to
the room design.
• The wide-beam delta-shaped light distribution is created in all
directions to ensure a high uniformity of light at the working
plane and a pleasant balance between the horizontal and vertical
illuminances.
Enlarged detail of Micro Lens Optics MLO
These optical features of the Micro Lens Optics create comfortable
andefcientgenerallightingthatisnotonlydedicatedtoofcelighting,
but also very suitable for general lighting applications in e.g. hospitals,
lobbiesandcommercialareas:
•Flexibleinteriordesignthankstoall-roundglarecontrol:computer
displays can be positioned anywhere in the room without the risk of
reectedglare.
• The direct glare expressed in UGR
R
is limited, which results in a
comfortable decorative lighting installation.
• The high light output ratios of these closed luminaires make the
lighting cost effective.
• The all-around delta-shaped light distribution ensures uniform
lighting, even in the case of wider luminaire spacing. By applying
square luminaires mounted in square patterns, the ceiling will appear
uniform in all directions.
• No disturbing luminance spots will guarantee a high level of visual
comfort.
Luminaires with MLO optics are available in such dimensions that they
can replace a square or rectangular ceiling tile, and also in slim-line
version.BytheirdistinctbrightnessOLCopticsmaycreateclearvisual
guidance and direction for the users of the illuminated spaces.
Optics to suit all requirements
Theopticinaluminaireismadeupofthereectorandlouvers,
diffuser or refractor system that controls the light direction and beam
pattern of the luminaire. It is an essential control device. It is therefore
not surprising that Philips offers a wide variety of optics, each designed
toperform
aspecicfunction.
Which optic is best for the practical situation in question?
The function of the area to be illuminated and the task to be
performed usually determine the type of luminaire and optic you need,
while the ceiling system often determines the dimensions and the
way the luminaire is to be mounted. The luminaire-optic combination
mustfullthelightingrequirementsdenedforeachspecicareaand
task.Inaddition,otherrequirements,suchasimage,efciencyand
aesthetics,willinuencethedecision.Lightdistribution,directand
reectedglarecontrolandefciencyareparametersthatinuencethe
performance of the lighting installation. These elements are described
in the European standard EN 12464-1 (Light and lighting - Lighting of
workplaces).
Thefollowingopticguideiscomprisedofopticsforuorescent
luminaires with TL5 and TL-D lamps, grouped in the different optic
dimensions (Micro, Mini, Midi and Maxi), for downlights with compact
uorescentlampsandforprojectorswithcompactHIDlamps.
The overview offers an indication of the optic description and
performance. As the optical performance may vary with lamp type
and number of lamps, please consult the photometric database via
www.lightingsoftware.philips.com in conjunction with calculation
programmeslikeDIALUXandRELUX.
Indoor_2008_Chapter_12_LIS.indb 37 20-05-2008 14:34:43
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