SUMMARYDATA - MICROSEMI

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1/6 FRC series reflectors for Cree MC-E LEDs

FRC Series 35mm Diameter Reflectors

for CREE MC-E LEDs

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High efficiency

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Faceted designs

provide homogeneous

focused spot and

spilled/direct light

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34.5 mm diameter for

MR-11 lamp

applications

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3 beams available

The FRC MCE reflectors are specifically

designed for the XLamp 4-chip MC-E

LEDs and from Cree.

A software-optimized aspheric profile

combined with precision facets provides

a homogeneous central spot as well as

useful peripheral spilled light.

The high collection efficiency exceeds

90% of the total flux emitted by the

LEDs.

Typical applications are:

• Flashlights/Torches

• General Illumination

• Reading Lamps

• Architectural Lighting

Cree® XLamp is a trademark of Cree, Inc. For technical

information about these LEDs please refer to the Cree®

XLamp datasheet or visit:

http://www.cree.com/products/xlamp_mce.asp

FRAEN CORPORATION FRAEN S.r.l.

80 Newcrossing Road Via Stelvio, 12

Reading, MA 01867 20019 Settimo M. (MI) – Italy

Phone: 781.205.5300 Phone: +39-02-35.456.1

Fax: 781.942.2426 Fax: +39-02-335.456.239

optics@fraen.com info@fraen.com

Website: www.fraensrl.com

For ordering information, please contact:

NAFTA Countries

ARROW

Telephone: 1-888-9LIGHT1

email: lightingsolutions@arrow.com

European Countries Please contact Fraen S.r.l. for

distributor’s information

Email: info@fraen.com

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2/6 FRC series reflectors for Cree MC-E LEDs

General Characteristics

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Reflector Material:

Operating Temperature range:

Storage Temperature range:

Polycarbonate, black color, with aluminum reflective coating.

-40deg C / + 100 deg C

Please note that small defects in the reflective coating, and flow lines and weld lines on the surfaces of

the reflectors are acceptable if the optical performance of the reflector is within the specification

described in the section “OPTICAL CHARACTERISTS”.

IMPORTANT NOTE – Reflector handling and cleaning:

• Handling: Always handle the reflectors by the outside surfaces or flange. Never touch the inside

surfaces of the reflector with fingers; finger oils and contamination will absorb or refract light.

• Cleaning: Clean reflectors only if necessary. Use only soap and water to clean the surfaces and

reflectors. CAUTION - Never expose the reflectors to alcohol or solvents, as they could damage the

plastic.

Scope

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This datasheet provides information about the following FRC series reflectors:

• FRC-N1-MCE-0R narrow beam reflector

• FRC-M1-MCE-0R medium beam reflector, with textured facets

• FRC-M2-MCE-0R medium beam reflector, with polished facets

Part Identification

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P/N: FRC-N1-MCE-0R

Small polished facets

P/N: FRC-M2-MCE-0R

Large polished facets

P/N: FRC-M1-MCE-0R

Large textured facets

Figure 1. Visual appearance of reflectors, for differentiating between part numbers.

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3/6 FRC series reflectors for Cree MC-E LEDs

Optical Characteristics: Beam Divergence and On-axis Efficiency

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Central Spot Spilled Light / Halo

On-axis intensity

(candela/lumen) Beam Angle

(degrees) ~ Intensity

(candela/lumen) Beam Angle

(degrees)

Narrow Beam

(P/N: FRC-N1-MCE-0R)

14 10 0.35 90

Medium Beam, Textured Facets

(P/N: FRC-M1-MCE-0R)

1.8 30 0.35 90

Medium Beam, Polished Facets

(P/N: FRC-M2-MCE-0R)

2.3 29 0.35 90

* The “Beam Angle” for the central spot is measured at the full-width at half-maximum (FWHM); the

“Beam Angle” for the spilled light is measured at the Full Beam at 5% of center spot maximum (FWHM).

Spilled light intensity is typical, as measured at ~30º half-angle location.

** Preliminary data and subject to change; MC-E results may be better due to smaller LED chip size.

Beam photographs and beam profiles

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Narrow Beam

(P/N: FRC-N1-MCE-0R)

Medium Beam, Textured Facets

(P/N: FRC-M1-MCE-0R)

Medium Beam, Polished Facets

(P/N: FRC-M2-MCE-0R)

Figure 2. Beam photographs

Table 1. Beam angles and intensity values.

See next page for beam profiles.

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4/6 FRC series reflectors for Cree MC-E LEDs

-45 -35 -25 -15 -5 5 15 25 35 45

beam angle, degrees

candela/lumen

Narrow "N1"

Medium "M2" (polished)

Medium "M1" (textured)

llumination Calculations

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To calculate peak candela: Find the central spot “on-axis intensity” value in Table 1, then multiply this

value by the lumens output from your LED (refer to the MC-E LED datasheet

http://www.cree.com/products/pdf/XLampMC-E.pdf for nominal lumens values). Or for a more accurate

value, refer to Cree’s .pdf specification for intensity binning.

Example calculation:

If the Fraen narrow reflector FRC-N1-MCE-0R is used on a cool white MC-E LED at 350 mA, the typical

luminous flux of the “Group M” LED is 430 lumens:

The calculation is: (14 candela/lumen) x (430 lumens) = 6020 candela peak on-axis.

The beam angle specified in Table 1 above is 10 degrees full beam-width measured at half-peak. This

means at 5 degrees off-axis (half of 10 degrees), the intensity should be half of 6020 candela, or 3010

candelas.

1 candela at 1-meter distance produces 1 Lux. This means the peak intensity at 1 meter will be 6020 lux.

The intensity decreases as a function of the distance squared, so at 2 meters the peak intensity will be

6020 / (2

) = 1505 lux. At 3 meters distance, the peak intensity will be 6020 / (3

) = 670 lux.

Figure 3. Beam profiles (reference)

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5/6 FRC series reflectors for Cree MC-E LEDs

CAUTION: If attaching the reflector to the PCB, do not use instant glue

(containing cyanoacrylates). Always test the glue on a

sample assembly and check the results and performance 24

hours later. Some adhesives produce fumes that will damage

the surfaces of the plastic reflector, or coating, or LED.

Tolerances: +/

0.2 mm

Figure 4. Front, side, rear and isometric views, with main dimensions.

Figure 5. The reflector touches the PCB, and is self

centered on the LED,

by 8 small

crush-ribs inside the rectangular hole thru the reflector.

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6/6 FRC series reflectors for Cree MC-E LEDs

Ordering part numbers

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FRC-__-MCE-0R

Published by Fraen Corporation.

All data contained in this document is the property of Fraen Corporation and may change without notice.

Rev Date Author Description

03 17-November-09 C. Jones Part numbering change: M1 was polished, M2 was textured.

02 03-September-09 C. Jones Added 5 pages. Data re-measured. “-M2” version added.

01 18-September-08 C. Jones Initial Release

•

FRC-N1-MCE-0R narrow beam reflector

• FRC-M1-MCE-0R medium beam reflector, with textured facets

• FRC-M2-MCE-0R medium beam reflector, with polished facets

0 (number zero), not letter O