Umeå University HUMlab-X

© NANCO

Creating a display studio and facing space, vibration and luminosity challenges

The challenge

Umeå University’s newest lab, HUMlab-X, connects multiple arts institutions, artists and entrepreneurs at the heart of the university’s arts campus. HUMlab-X is designed to meet, discuss, study and research through a multitude of interactive systems available for experiments, workshops, research, modeling, simulations, etc.
 
When Humlab-X wanted to expand the lab with a display studio consisting of one large landscape projection area and one smaller portrait projection area NANCO faced three challenges:
  • A limited space – In order to obtain the planned 3.6m landscape projection area the approx. 1.4m long projector would need to be set up 3.6m from the screen, a space that was not available.
  • A vibrating floor – The room’s 60cm installation floor, creating a hiding space for cables and cooling, was not resistant to vibration from e.g. traffic and passers-by, which can disturb the projection and hence the visual experience.
  • A difference in luminosity – As the projectors for each projection area differed in luminosity, the more luminous projection would automatically darken the adjacent projection, which would affect the experience negatively.

The solution

It turned out that both the space and the floor challenges were intertwined… and that the solution would create additional challenges.

Using stands, rear projection and a complex CAD-modeling.
To ensure a vibration-free projection the technical equipment would need to be placed on stands resting on the concrete floor beneath the raised floor; a 60cm space full of wires, cables and pipes.

To create a 3.6m wide projection area through rear projection and mirror reflection, a 3.6m wide glass screen would have to be mounted in the room’s wall and a 4K projector and a 2m * 1,2m large mirror would have to be installed behind the glass screen. As such an installation demands extra precision to avoid problematic second projections, the mirror’s and the projector’s exact positions have to be meticulously calculated.

NANCO was now facing the challenge of placing a 4K projector and  a large mirror at only one and precise position on stands through a raised floor compact with cables and cooling elements. In order to succeed with this task, NANCO created an advanced CAD-model based on the premises and the planned setup.

CAD-model HUMlab -X © NANCO

CAD-model HUMlab -X © NANCO

On stands through a raised floor compact with cables and cooling elements © NANCO

On stands through a raised floor compact with cables and cooling elements © NANCO

On stands in detail © NANCO

On stands in detail © NANCO

While the CAD-model turned out to be an excellent tool to enable the installation of the planned setup, it also revealed a secondary challenge: the exact positioning of the 4K projector made its maintenance impossible. The solution was to use a divisible stand, where the bottom part stays anchored in the concrete floor and the upper part can pivot in order to change the projector’s lamp once its life cycle is over.
 
Using a divisible stand, where the bottom part stays anchored in the concrete floor and the upper part can pivot © NANCO

Using a divisible stand, where the bottom part stays anchored in the concrete floor and the upper part can pivot © NANCO

Using a divisible stand in detail © NANCO

Using a divisible stand in detail © NANCO

Doing magic with reflection
As the landscape projection area 4K projector is too luminous compared with the portrait projection areas´s  two mono projectors, this difference in luminosity would impair the user experience. NANCO selected therefore a landscape screen with less gain (GAIN 0,3) to reflect less light and a portrait screen with more gain (GAIN 0,5) in order to balance the experience in luminosity.
 

The outcome

HUMlab-X display studio with two powerwalls

HUMlab-X display studio with two powerwalls

HUMlab-X has now a display studio consisting of a 3.6m * 1.8m landscape 4K projection area created through rear projection and a reflecting mirror. Adjacent is a 1.8m * 2.1m portrait  projection area created by two rear projecting mono projectors with soft edge overlaping. All vibration-free and without second reflection for maximum experience.

”The display studio (added in 2014/2015) is an innovative interaction space with sensor technology and two large, angled screens. Among other things, this studio is used for critiquing software and for enacting complex 3D models using stereo projection.” – HUMlab-X
Industry

Academic/Research

Challenge
  • limited space
  • installation floors that are not resistant to vibration
  • difference in luminosity
  • Additional challenges:
    • second projections
    • limited space for projector maintenance
Solution
  • rear projection and mirror
  • stands anchored in concrete floor
  • gain adapted screens
  • precise calculations and CAD-modeling
  • divisible stand for maintenance of 4K projector
Outcome
  • 3.6m * 1.8m 4K powerwall
  • 1.8m * 2,1m powerwall
  • no vibration
  • no second reflection
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