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Technical Data
3.5 Optical Specifications
Optical Resolution D:S
EN1RL
EN1RH
Because the sensor has variable focus, through-the-lens sighting, and parallax-free optics, it can be
mounted almost anywhere. Adjustable focus distance range varies by model:
F1 (Close Focus) models can be focused from 300 mm to 600 mm (12 to 24")
•
F2 (Standard Variable Focus) models can be focused from 600 mm to infinity (24" to infinity)
•
For 1-color temperature measurements make sure the target completely fills the measurement spot.
The spot size for any distance, when the unit is properly focused at that distance, can be determined
using the following formula and Figure 6.
Divide the distance (D, in Figure 6) by the D:S specification. For example, if the D:S specification is
150:1, and the sensor is 2000 millimeters (80 inches) from the target, divide 2000 by 150 (80 by 150),
resulting in a target spot size of which gives you a target spot size of 13.3 mm (0.5 in).
The spot size calculated using this method is valid only at the focus distance. Spot
sizes out of focus distances will vary from the rule.
16
info@Raytek-Direct.ca
(assumes 95% energy at the focus point)
100:1
150:1
Figure 6: Spot Size Chart
Rev. E1 Sep 2015
D = Distance
S = Spot size
ENDURANCE 1R
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