Testing Visual Performance Factors

At Display Technologies, we created the Cinema Expert Lab to allow us to test our products and solutions accurately. The lab is small, but it is very valuable to us!

The lab is 100% light-controlled and has black fabric walls, which help dampen acoustic and visual reflections.

To simplify visual performance testing and ensure its repeatability, we have created a simple test rig that allows samples to be quickly swapped and analysed.

For visual testing, we use the following setup:

Labsphere Spectralon calibrated reference white standard
Optoma projector
Jeti 1501 HiRes Spectroradiometer
70cm2 fabric frame with fixed base
USB Microscope

The fixed base of the fabric frame means that the image surfaces are always in the same plane when tested.

At the start of the test session, the target laser in the Jeti 1501 is aligned to the diameter of the Spectralon reference standard, ensuring that the measurement area is always consistent across a session.

The projector and Spectro are allowed at least 30 minutes of warm-up time before measurement, enabling them to reach stable operation conditions. The setup allows the reference standard to be quickly put back in place between measurements to ensure consistency.

Each image surface is measured with full-field red, green, blue, and white test patterns. Each measurement is taken at least three times, and the average is recorded.

The fixed location of the image surface makes visual comparisons easy, as the surface is a fixed distance from the projector and rear wall.

A detailed evaluation of the construction of each image surface is performed using a USB microscope.