Prism Light

for those times when maximum security is not required, but a stylish all-glass cover is.

Like its bigger brother, PrismHD, we can mount Prism Light cases on freestanding plinths, table-tops, or on walls. Plinth styles include cupboard, SSS display storage drawer units, open metal framework, timber and steel structures all of which can be customised.

The glass cover of all Prism cases is securely bonded into a locking metal frame. Glass to glass joints are bonded with a transparent UV cured adhesive. With all Prism light cases the glass cover lifts off when unlocked.

Museum-quality laminated security glass is standard and this provides important protection from external UV radiation. The option of Optiwhite™ glass ensures that delicately coloured items such as illuminated manuscripts, textiles and art are seen in their true colours. Internal lighting is available with a choice of either fibre optic or LED, depending on the application.

Technical information

The TESS Prism Light Frameless System comprises bespoke sized individual cases. Prism Light is a low level fully bonded case designed to exhibit books, manuscripts, works of art and smaller 3-dimensional artefacts.

Displays can be mounted directly on the internal base display board or on purpose made mounts.

System sizes

The Prism Light system is available in a variety of standard sizes and specific made-to-order sizes, although careful consideration should be given to the ease of handling of larger cases and also the supporting plinths (if present).

Structural glass

6.4mm thick laminated security glass conforming to BS6206 & 6262, is fitted as standard.

The laminated glass we use also has the added benefit of filtering over 97% of UV radiation between the harmful wavelengths of 320 & 380 nanometres.

options include:

  • High quality low-iron content “Optiwhite” glass, which greatly enhances the colour rendering of display objects in comparison to standard glass (which has a noticeable green tint).
  • Schott Amiran® low-reflective glass is also available to further enhance the viewing experience. This treated glass is only 1% reflective compared to the normal 8% reflectivity of normal glass and offers an exceptionally clear view of the display objects.

System extrusions

The showcase structure comprises purpose designed aluminium extrusions, which are powder coated as standard


The Prism Light system is normally accessed by removing the two Huwil locks, releasing the four captive cone-point screws which compress the internal seal, attaching glass suckers to the hood, then lifting carefully upwards and over any display objects.

Unlike PrismHD there are no hinges or internal gas-springs to assist with the opening/closing.

The glass hood is only available as a lift-off and as such the overall sizes should be carefully considered from a weight point of view and also the practicality of lifting and lowering the hood over the display objects. Size (safety) restrictions are applied by us and depend on the dimensional ratios and overall weight.


Each case is normally equipped with two extractable Huwil cartridge locks, which are normally suited alike and supplied with 2 keys per suite.

Lighting options

The Prism Light system can be fitted with internal lighting in the form of either an LED gantry or LED spotlights as standard.

Power supply

When fitted with a lighting option, each case requires an external power supply.

All connections utilise standard IEC plugs and sockets with no wiring by the end-user being required.


Compressible silicone foam seals are fitted all round the case (internal) periphery.

Cases typically have an air exchange rate of 0.1 (or better) per 24 hours.

Environmental control

Each case can be equipped with the following options:

  • Minimal (internal) passive system comprising a control medium reservoir beneath the internal base display board.
  • High capacity remote passive system comprising a control medium reservoir located within the supporting plinth (can be serviced without opening the case).
  • A fully active remote “micro-climate generator” located with the supporting plinth or an adjacent structure. A constant power supply is required for this option.

Base display board

The standard base display board is manufactured from ZF-MDF, which is sealed with a water-based acrylic lacquer and wrapped in fabric from the Baumann Ultra range.

Alternative panels and finishes are available.

Case plinth

Where applicable, the standard supporting plinths (or individual plinth legs) are manufactured from ZF-MDF with integral levelling adjusters. The plinth is normally painted and may easily be removed, repaired and/or repainted if required.

Alternative construction methods and finishes are available.