The Kallista is the latest Virtual Daylight® fitting from Clearvision designed to meet the key demands of the modern workplace:

• The ergonomics of daylight type lighting that research suggests improves
  attention and cognitive ability at work (see opposite)
• Good lateral light distribution to provide high wall and ceiling illumination in
  the spirit of CIBSE LG7
• High efficiency options (LOR up 79%) that surpass both Part L and ETL
  (Carbon Trust) requirements
• An environmental approach to design that considers future refurbishment to
  minimise waste, extend the life of the fitting and to ease recycling
  

The look of the Kallista is very modern, with a clean curved lens design and subtle translucent end caps. The lens/end caps only extend 13mm below the ceiling line making the fitting much less visually intrusive when viewed across larger spaces. The curvature and optics of the lens are used to bend light up onto the walls and higher surfaces, creating a bright airy feel.

Ergonomics

The Kallista is based on the ideas of Virtual Daylight®, which state that working performance is improved by giving artificial light as many of the characteristics of daylight as possible. There is recognised independent research evidence that whiter light is mentally stimulating and supports natural human biology for improved staff well-being.

The key to this evidence is the effectiveness of artificial light in suppressing the sleep hormone Melatonin in the manner of natural daylight. Please contact our technical department for more information.

Versatile usage

The look and performance of the Kallista is versatile because it has interchangeable lenses (shown above) which can be changed by unskilled maintenance operatives.

The 214/24 version has an intelligent ballast that allows the fitting to produce either 2500 or 4000 lumens just by changing the lamps. A four lamp version (5000/8000 lumens) is also available. The idea behind this versatile design is that space use is always changing.

The lighting should be able to reflect these changes with simplicity and at little cost.

Lens Options

Q45 Fisheye (Code –Q)
The Q45 has a radial MQC layer and diffuse polyester co-polymer layer. The result is a 3D fisheye appearance with wide distribution. It combines meeting modern lighting distribution guidance with a strong aesthetic. Suited to areas where the visual feature of the lighting is important.

Click here for Photometrics

Optika 2 Polariser (Code –P)
The Optika is based on VDT polarising technology (GB patent 2330217B). The curved Optika II is a good
glare reducer with an even spread of light. Recommended for prestige areas and those requiring
high visual acuity.

Click here for Photometrics

MTX Microprismatic (Code –M)
The MTX lens has two sets of linear microprisms which combine high output with wide distribution. The MTX offers good efficiency and an excellent spread of light for open plan space.

Click here for Photometrics

GRID lens (Code –G)
The GRID lens has a polymeric aluminium grid on an acrylic layer and a diffuse polyester co-polymer layer. The two layers combine to provide an appearance like an open metal mesh but with superior light transmission and a wipe-clean surface. Suited to areas with lower light levels where visual comfort is the prime requirement.

Click here for Photometrics

Sustainability

The design of the Kallista is based on sustainable principles. These combine low energy lamps and gear with recyclable and replaceable component parts. The choice of lens options and lamp configurations
provides the flexibility to match power to need.

This is key to reducing waste and lowering cost of ownership.

The following parts are removable and replaceable with the fitting in the ceiling:

• Lens
• Reflector wings
• Geartray/ballast
• Lamps/lampholders
  

All that is left is a bodyframe, allowing the whole fitting to be refurbished, quickly and simply, minimising both waste and cost.

What goes into a Kallista unit

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Technical

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Kallista product order codes

1. Lens Options: Q = Q45 Optics P = Polarising Optika Lens M = MTX Optics G = Grid Optics

2. Lamps and control gear: We supply lamps with all our luminaires. The correlated colour temperature (CCT) of our standard lamps is 6500K with a Colour Rendering Index (CRI) of 80 & above. We use high frequency electronic control gear for our standard products. This provides flicker-free light.

3. Dimming options: We can offer DALI, Tridonic (DSI) or SwitchDim (SD) and Philips/Osram Analogue (1-10) or Touch&Dim (T&D). Please discuss your dimming requirements with our sales team.

4. Emergency: Our emergency luminaires use a maintained 3Hr emergency pack.

Example Order Codes:

CODE DESCRIPTION
KAL6-Q.314/D/E Kallista with Q45 lens. Dimmable with 3x14w T5 lamps and 3hr Maintained Emergency Pack
KAL6-P.240 Kallista with Optika Polarising lens. Fixed output with 2x40w PLL lamps

Some of the best organisations use Clearvision:

Along with many smaller companies and organisations in the public sector including: