Photo Research developed the first commercially available video photometer over
15 years ago. We are proud to introduce our newest and most advanced video photometer
- the PR-920 Digital Video Photometer (DVP). Our video photometers are being used
world-wide for applications ranging from FAA testing of radar screens to ISO certification
of information displays.
Digital Precision
The heart of the new PR-920 is a thermoelectrically cooled, 1024 x 1024 element
digital CCD camera which helps to make it the most accurate, sensitive and repeatable
video photometer in its class. Because the PR-920detector consists of 1.048 million
pixels, superior spatial resolution is guaranteed.
Hand Matched Filters
In addition to the proprietary camera design, the detector response of each PR-920is
painstakingly matched to the CIE V(λ), (photopic) response by our proprietary
filter matching techniques that have been developed over the last 50 years. Our
filter matching experience, combined with an individual calibration of each and
every detector element means that the PR-920delivers the most accurate measurement
results of any commercially available video photometer. In addition to the standard
photopically matched filter, the PR-920 can be equipped with high-accuracy, hand-matched
CIE Tristimulus filters (option CFS- 302).
Versatility
The PR-920 is the only commercially available video photometer that utilizes a focusable
objective lens as standard equipment providing capability of addressing virtually
any application without change lenses. System versatility is further enhanced by
5 neutral density filters, giving the PR-920the widest measuring range of any video
photometer available today.