MELLOW LIGHT V

Recessed LED and fluorescent luminaire

MELLOW LIGHT V

Design

“The new technologies which are now available for manufacturing products are far removed from the past when product design was determined predominantly by mechanical processes. We are moving into a virtual era in which it will not necessarily be possible to understand the way in which something was manufactured by simply looking at it. Adopting too much of a flowing shape for a product like MELLOW LIGHT V would have been inappropriate: when one enters a room, one can see hundreds of such luminaires in rows on the ceiling with constant repetition of an identical product. Here we need to devise an idiom which, even when repeated, is refreshing without constantly calling for attention.”

Design James Irvine | Milan

MELLOW LIGHT V

On the lighting innovation winners' podium

OPTIMUM LIGHTING QUALITY

Similar to daylight: gentle, glare-free light distribution without any distracting harsh shadows
Well-balanced illumination of work plane, walls and ceilings for a bright, open room atmosphere
Homogeneous illumination with no visible light source thanks to perfectly broken up LED lighting points
In order to meet special requirements, the luminaire with micro-prismatic optic is also available with Ra 90 (4000 K)

MELLOW LIGHT V

On the lighting innovation winners' podium

MELLOW LIGHT V EM 55 W TC-L

MELLOW LIGHT V EM LED4200-840

OUTSTANDING ENERGY EFFICIENCY

Best-in-class fluorescent lamp with a light output ratio of up to 96%
Latest-generation LED produces same amount of light with 40% smaller installed load
Large potential savings thanks to generally dimmable LED luminaires

MELLOW LIGHT V

On the lighting innovation winners' podium

EXTENSIVE PRODUCT RANGE

Three optical systems: optimised for efficiency, aesthetic appeal and glare control
Wide range of wattages
Three sizes for optimum integration in suspended ceilings
Integrated emergency lighting: uncluttered ceiling look without additional outlets and with a small number of emergency luminaires

MELLOW LIGHT V

Optimum Lighting Quality

MELLOW LIGHT V

Comparison calculation over a period of 15 years

Empowerment

Vista

Average energy consumption
per m² and year (kWh)

Total costs
(operating costs +
investment costs)

Total CO₂
throughout service life (kg)

Lighting quality:

Energy consumption and costs:

Underlying conditions
Conventional T26 luminaires
10 T26 louvre luminaires, each 4 x 18 W
Luminous flux of luminaires: 3024 lm
Luminous efficiency of luminaires: 34 lm/W
LED luminaires
10 recessed MELLOW LIGHT V LED 37 W luminaires
Luminous flux of luminaires: 4000 lm
Luminous efficiency of luminaires: 108 lm / W
Lighting management system
DIMLITE daylight with daylight-based control
and presence-based control. zumtobel.com/dimlite
Calculation period 20 years

Example of refurbishment: Although slightly higher investment costs have to be factored in for MELLOW LIGHT V LED initially, refurbishing an existing lighting system incorporating louvre luminaires pays for itself after just 3 years. This is explained by its low energy and maintenance costs. Additional efficiency can be obtained by using a lighting control system such as DIMLITE. Presence detectors and daylight sensors effectively reduce the need for artificial lighting and improve convenience at the same time. With average energy consumption of only 22 kWh per year, MELLOW LIGHT V LED is recommended for buildings where sustainability certification is required.

zumtobel.com/sustainability

Comparison calculation

Example of refurbishment

MELLOW LIGHT V

Surface anatomy of a Brightness-Optik

A unique distinguishing feature of the optic is that it is manufactured in one piece but combines various types of light distribution in one unit. Efficient, finely structured lenticular lenses perfectly break up the lamp image, so that luminaires and workstations can be arranged independently in the room. The lateral lighting chamber with Soft Edge Prismatic Structure ensures typically “mellow” brightness distribution in the room while also reducing luminance to a level perfectly suited to office applications.

Surface anatomy of a HighDefinition-Optik

Combining high performance with a more structured and detailed appearance, the one-piece HD optic makes optimum use of the latest technology. From the soft MELLOW LIGHT distribution to the high light output ratio, the HD optic is the perfect choice for the modern workplaces.

Surface anatomy of a MicroVane-Optik

With its bright metallic surface, the MicroVane optic provides a pleasantly elegant contrast to the lighting chamber boasting soft glare control. In addition, miniaturised cross blades provide effective glare limitation in compliance with EN 12464, with luminance levels below 1000 or 1500 cd/m² above 65°.

Extensive Product Portfolio

Brightness-Optik

HighDefinition-Optik

MicroVane-Optik

MELLOW LIGHT V

Extensive Product Portfolio

Flexibility thanks to diversity

The amount of light produced by MELLOW LIGHT V
ranges from 2,000 lm to over 7,000 lm. This means that the twin objectives of as few luminaries as possible and maximum possible lighting efficiency can both be met. Hitherto well-known in its square luminaire incarnation, MELLOW LIGHT V now also comes as a linear luminaire that boasts an impressively slim shape combined with extremely high light output ratios. MELLOW LIGHT V is also versatile when it comes to choosing a lamp technology.

MELLOW LIGHT V bears the eco+ label for especially resource-friendly products. For more information on eco+, please visit zumtobel.com/eco

Overview

LED

T16

TCL

MELLOW LIGHT V

LED

MELLOW LIGHT V fitted with a HighDefinition optic is now available with a colour rendering index of Ra 90 at a colour temperature of 4000 K. This makes MELLOW LIGHT V the perfect lighting solution for hospitals, laboratories and care facilities.

Primary optic for perfectly homogeneous LED lighting points

LED light source with a service life of 50,000 hours at 90 % residual luminous flux

With luminous efficiency levels of up to 122 lm/W, the new LED generation of MELLOW LIGHT V is up to 87 % more efficient than conventional luminaires fitted with fluorescent lamps. In combination with the light sources’ service life of 50,000 hours, the way is cleared for the economically efficient use of LEDs for general office lighting.

MELLOW LIGHT V

LED

Lighting quality   Individual LED lighting points are broken up perfectly by the primary optic, which prevents multiple shadows while providing highly uniform illumination of the task area.

Thermal management   The highly effective passive cooling system ensures optimum heat dissipation despite its small dimensions. As the LED board and heat sink are closely connected to each other, the cooling system ensures a long service life of the LED module.

Control   MELLOW LIGHT V LED is basically equipped with a DALIdimmable converter to combine optimum lighting quality with maximum energy saving potential.

Minimum maintenance effort   Thanks to the LED’s long service life, the maintenance effort of MELLOW LIGHT V LED is reduced to a minimum. Replacement of the light source is usually not necessary. An additional sealing rim fitted around the optic reduces soiling of the luminaire.

Sustainability Thanks to mercury-free light sources, a long service life and, last but not least, high luminaire efficiency, MELLOW LIGHT V makes a sustainable contribution to environmental protection.

MELLOW LIGHT V

TCL / T 16

Control gear MELLOW LIGHT V is fitted with electronic control gear as standard. Optional dim²save devices make it easier to get into the world of dimming. For maximum convenience and minimum energy consumption, MELLOW LIGHT V is also available with DALI-dimmable control gear as standard. zumtobel.com/dim2save

High-performance reflector An innovative high-performance reflector made of microcellular plastic covers nearly all of the inside of MELLOW LIGHT V. A reflection factor of 99 % ensures that absolutely no light is lost inside the luminaire.

Plug-in connection system MELLOW LIGHT V products are generally fitted with the non-proprietary LINECT® plug-in connection system.

Cool Spot Cooler MELLOW LIGHT V compact fluorescent lamps are selectively cooled to their optimum operating temperature by the patented Cool Spot Cooler. Excessive heat is passively conducted by the CSC from the lamp to the luminaire housing, which considerably improves both the energy efficiency and service life of the light sources.

MELLOW LIGHT V

Form follows function

Seamless housing The matt white powder-coated
luminaire housing is seamlessly welded at the corners,
thus ensuring perfectly harmonious integration into the ceiling.

Lighting chamber Soft Edge Prismatic (SEP) Structure
with gently rounded microprisms for mellow brightness
distribution in the room with simultaneous reduction
of luminance levels at every viewing angle.

All-round sealing rim
Provides a clean seal between the
luminaire's optic and housing,
thus protecting against soiling.

MELLOW LIGHT V

with tunableWhite

For details please refer to the White Paper on the “Lighting quality perceived in offices” research study at zumtobel.com/study-office

Findings from the user study on lighting quality perceived in offices conducted jointly with the Fraunhofer Institute of Labour Planning and Organisation (IAO):

Huge differences with regard to colour temperature preferences:
- ideal: colour temperatures between 3000 K and 6000 K
- most popular: 4000 K and 5000 K
Office users rate their working situation significantly higher if it is possible for them to adjust the lighting to their personal needs
DIN SPEC 67600:201304: design recommendations for biologically effective lighting using artificial lighting on the basis of available daylight
Artificial lighting solutions incorporating wide-area panels emitting diffuse light such as MELLOW LIGHT V tunableWhite, in combination with lighting management, support daytime activities and ensure a good night's sleep

MELLOW LIGHT V

with tunableWhite

* Eh = horizontal illuminance

Getting ready for sleep
Colour temperature: 3000 K,
Eh* (daylight and artificial lighting):
higher than 500 lx

Aim:
synchronisation of people's circadian rhythm, no interference with melatonin release, restful sleep

During the day with cloudy sky
Colour temperature: 6000 K,
Eh* (daylight and artificial lighting):
higher than 800 lx

Aim:
enhancing people's well-being through well-matched colour temperature, accordingly cooler light colours with overcast sky

Stimulation in the morning
Colour temperature: 5000 K,
Eh* (daylight and artificial lighting):
higher than 500 lx

Aim:
synchronisation of people's circadian rhythm, complete suppression of melatonin release

During the day at sunshine
Colour temperature: 4000 K,
Eh* (daylight and artificial lighting):
higher than 1000 lx

Aim:
enhancing people's well-being through well-matched colour temperature, accordingly warmer light colours during sunshine

MELLOW LIGHT V

for emergency lighting

MELLOW LIGHT V

Emergency lighting included

Emergency lighting version
with LED emergency lighting integrated into the optic

Ensures good orientation in the room. LED emergency luminaire
for anti-panic lighting according to EN 1838. Maximum room
lighting: up to 130 m² per luminaire > 0.5 lx

Thanks to the integrated LED emergency lighting’s characteristic light distribution, one luminaire is enough to provide sufficient orientation for an area of 130 m² and to make escape routes or obstacles visible. Thus, the number of emergency luminaires as well as the output required by the supply systems can be reduced.

The ONLITE RESCLITE emergency luminaire is a great way of continuing the LED concept into areas where there is no MELLOW LIGHT V. The RESCLITE app for mobile devices makes designing emergency lighting really straightforward and convenient.

zumtobel.com/resclite