www.fraen.com 1/10 50mm Nested Lens, Standard Version, Rev 2
50 mm Multi-TIR Nested Lens Series
Standard Version
Patent pending multi-TIR innovation
High efficiency
Tight beam Narrow Beam, Spot Beam, and
Elliptical Beam versions with minimal
spilled light
Medium Beam and Wide Beam versions
have same diameter and fit same holders.
Ideal size for MR16 applications
Fraen Corporation’s multi-TIR nested lens delivers
narrow beam lighting when used with a variety of
LEDs including many multi-chip and chip-on-board
LEDs. The Patent Pending technology allows the
optic size to be reduced significantly (when
compared to reflectors or TIR collimators with
similar optical performance) while delivering a
tightly focused beam with reduced spill and low
glare.
Fraen’s nested lens design enables the luminaire
designer to have more room for thermal and
electrical components, thereby increasing design
options.
Typical applications include:
LED lighting applications requiring a narrow-
beam and/or high center-beam candela
Architectural Lighting and Wall-wash lighting
Retail Lighting Fixtures
Spot Lights
Hospitality Lighting Fixtures
Commercial Lighting Fixtures
Entertainment Lighting
FRAEN Corporation
80 Newcrossing Road
Reading MA 01867
USA
Phone:+1 781.205.5300
Fax: +1 781.942.2426
Inquiries: optics@fraen.com
Website: fraen.com
For ordering or sales information in your region,
please contact one of our offices listed above or
visit http://www.fraen.com/optics/contact-us/.
www.fraen.com 2/10 50mm Nested Lens, Standard Version, Rev 2
General Characteristics
Materials
Lens Material Optical Grade PMMA
Lens Holder Material Polycarbonate
Operating Temperature range -40° C / + 80° C
Storage Temperature range -40° C / + 80°C
Average transmittance in visible spectrum (400 – 700nm) >90%, as measured using 3mm thick
Optical Grade PMMA.
Please note that flow lines and weld lines on the external surfaces of the lenses are acceptable
if the optical performance of the lens is within the specification described in the section
“OPTICAL CHARACTERISTICS”
IMPORTANT NOTES – Lenses handling and cleaning:
Handling: Always use gloves to handle lenses and/or handle the lenses only by the
flange. Never touch the outside surfaces of the lenses with fingers; finger oils and
contamination will absorb or refract light.
Cleaning: Clean lenses only if necessary. Use only soap and water to clean the
surfaces and lenses. Never expose the lenses to solvents such as alcohol, as it will
damage the plastic.
CAUTION:
Due to the inherently high power of COB LEDs, use proper thermal management of the
LED to protect the LED as well as the Fraen plastic parts. Fraen has no liability for
direct, indirect or consequential damages resulting from parts being subjected to
temperatures outside of the recommended operating range.
Scope
This datasheet provides information about the mechanical features and optical performance of
the 50mm diameter FNL lens series and lens holders when used with a variety of LEDs.