Lumenera Lt-C1610, User Manual

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Teledyne Lumenera Lt Series Additional Reference Information • 119
7.2.2 Light Sources
Keep these guidelines in mind when selecting and setting up light source:
•
LED light sources are relatively inexpensive; provide a uniform field, and longer life span
compared to other light sources. However, they also require a camera with excellent sensitivity.
•
Halogen light sources generally provide very little blue relative to infrared light (IR).
•
Fiber-optic light distribution systems generally transmit very little blue relative to IR.
• Some light sources age such that over their life span they produce less light. This aging may
not be uniform—a light source may produce progressively less light in some areas of the
spectrum but not others.
7.2.3 Monochrome Cameras with Anti-Reflection Filter
Lt-Ux0x-xxxxx and Lt-Ux1x-xxxxx series monochrome models are available with AR/AR coated
glass filters, factory installed for optimized imaging solutions. See section Monochrome Cameras
for ordering information.
7.2.3.1 AR/AR Filter Specification Highlights
Spectral Performance
Parameter Value Unit Comment
Reflectance 380nm – 399nm < 4 % Maximum
Reflectance 400nm – 700nm < 2 % Maximum
Reflectance 701nm - 1100nm < 4 % Maximum
Coating Uniformity
There will be less than ± 1nm variation in the transmittance of any wavelength when measured
across the clear aperture area of one filter