3M Display Materials & Systems Division

Technical Data 2024

3M Advanced Light Control
Film Automotive™

ALCF-A2+
ALCF-A3+
ALCF-A5+39
ALCF-A5+39H
Product Description
3M™ Advanced Light Control Film (ALCF-A2+,
ALCF-A3+ and A5+39(H)) constrains light
exiting from liquid crystal displays and interior
light sources. This effect minimizes reflections
on the windscreen or side glass.

Construction/Performance
ProductOpticalSpecification

ACLF-A2+

ALCF-A3+

ALCF-A5+39(H)Effective Transmission[Axial Gain; ET(0°,0°)]≥ 1.13≥ 1.13≥ 1.30Effective Transmission [WindshieldView Gain; ET (90°,45°)]≤ 0.10≤ 0.10≤ 0.18

Color Shift 0° dx, dy≤ 0.010, ≤ 0.010

Color Shift 30° dx, dy

Physical≤ 0.030, ≤ 0.030

Haze, %

21 ± 863 ± 1065(45) ± 10Caliper, µm

440 ± 50380 ± 30380(390) ± 30

43

43

38.5

Louver Pitch, µm
Enhanced Scratch resistance(✓)

3M™ Advanced Llight Control Film (ALCF)

Automotive Environmental Testing
ProductCondition

Time

High Temperature

95°C (105°C*)

1000 hours

Low Temperature-40°C

1000 hours

Temperature/Humidity

65°C/90%RH

1000 hours

Thermal Shock-40°C to 95°C

1 hour dwell/ 300 cycles*for 3M ALCF-A5+39 and 3M ALCF-A5+39H

Automotive Display- Recommended Solutions
Partial Instrument Cluster

Full Instrument Cluster

Center Stack

High Axial Brightness

High Efficiency

Minimal Windscreen Reflection--

3M DBEF-D2-400 Auto--

3M BEF3-T-155n Auto

3M DBEF-D2-400 Auto

3M BEF3-T-155n Auto

3M BEF3-T-155n Auto

3M BEF3-T-155n Auto

DiffuserDiffuserDiffuserLight Guide

Light Guide

Light Guide

3M ESRAuto

3M ESRAuto

3M ESRAuto

Axial Luminance= 974 nits
Axial Gain (ref. Diffuser Only)= 2.8

Axial Luminance= 836 nits
Axial Gain (ref. Diffuser Only)= 2.4

Axial Luminance= 706 nits*
Axial Gain (ref. Diffuser Only) = 2.1.,,.

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6i'll""'m003.4® 85331tlu

E82 9622 600.,,,181'
1$1920""-•,17.2

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3M™ Dual Brightness Enhancement Film (DBEF)
3M™ Brightness Enhancement Film (BEF).,;o226 1

1611

200 81.W.S

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3M™ Enhanced Specular Reflector (ESR)
3M™ Advanced Light Control Film (ALCF)*example data shown in plot from ALCF-A3+

3M™ Advanced Light Control Film Comparison
ALCF-A2*

ALCF-A3+

ALCF-A5+39

ALCF-A5+39H

Light Matte Polycarbonate

Heavy Matte Polycarbonate

Heavy Matte Polycarbonate I PC w ith Replicated Matte Surfac

Reflective Polarizer

Reflective Polarizer

Light Matte Polycarbonate

Light Matte Polycarbonate

Light Matte Polycarbonate• Least amount ofoff-axis light• New reflective polarizer
core for improved
temperature reliability,
reduced color shift
over angle and reducedthickness• Optimized louver design• Flexibility for reflective
polarizer transmission
axis oriented at 0° or 90°to louvers

PC with Hard Coat Surface• Optimized louver design• New material to allow for • New material to allow
a broader output
for a broader output• High Haze for improved
in-device appearance• High haze for improved
in-device appearance• Robust surface that
reduce scratching
between ALCF andadjacent films• Improved
environmental
stability

Full Instrument Cluster or Center Stack Sample Performance (Single BEF)
ALCF-A2+

ALCF-A3+

ALCF-A5+39H

Axial Luminance = 745 nits
Axial Gain = 1.8

Axial Luminance= 745 nits
Axial Gain = 1.8

Axial Luminance= 803 nits
Axial Gain = 1.9-.,.

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"'602.75592,.,.

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3/U,.,.

"112·"

187.3

202

<U

<1.6

Note: Samples measured on a 12.3” IPS display with White Reflector/Light Guide/Diffuser/BEF3-t-155n/ALCF-AX+ film stack
Axial Gain with reference diffuser only.

Partial Instrument Cluster Sample Performance
ALCF-A2+

ALCF-A3+

ALCF-A5+39H

Axial Luminance = 881 nits
Axial Gain = 1.8

Axial Luminance = 843 nits
Axial Gain = 1.8

Axial Luminance = 948 nits
Axial Gain = 1.9--...

,948.1>1142.1

711.3

631.9

•-421.li,..

rZ31.721U<1247'.5,,..

<0.9

Note: Samples measured on a 12.3” IPS display with White Reflector/Light Guide/Diffuser/BEF3-t-155n/ALCF-AX+ film stack
Axial Gain with reference diffuser only.

3M Demo – Example Angular Luminance Data

Measurement
Item

Description

Thickness

Equipment:
Calibrated caliper capable of measuring to the nearest 0.001 mm.
Procedure:Allow sample to come to equilibrium in a constant temperature and humidity (CTH) room, controlled to room
temperature conditions. Measure at least three evenly spaced locations across the converted sample in a
direction perpendicular to the louver direction (“across louvers”). Average the three or more readings.

Part Size

Equipment:
Calibrated ruler capable of measuring to the nearest 0.5 mm.
Procedure:
Allow sample to reach equilibrium in a constant temperature and humidity (CTH) room, controlled toroom temperature conditions. Measure the distance between adjacent corners along the short and long
dimensions of the converted sample. Average the two long and short side measurements.

CurlEquipment:
Flat working surface and calibrated ruler capable of measuring to the nearest 0.5 mm.
Procedure:
Lay sample on flat surface and measure the distance from the table top to the underside of the sample at all
four corners. Flip the sample over and repeat same measurements. The sample curl is the value of the largest
measured value.

EffectiveTransmission

Equipment:
3M Effective Transmission tester. PR-650 Spectrophotometer. Fostec DCR II or III halogen light source withfiber optic cable (minimum luminance of 50 foot Lamberts). Light box with Melles Griot polarizer.
Procedure:
Align test equipment absorbing polarizer pass axis parallel with louver direction. Effective transmission = Ld /Ln. Ln: measured luminance at normal axis of polarizer without sample on backlight. Ld: measured luminancewith sample between the backlight and polarizer. For horizontal ET, orient the film so that the louvers areperpendicular to the tilt axis of the light source. For vertical ET, orient the film so that the louvers are parallelto the tilt axis of the light source. For 0° ET, orient the light source such that its front surface is normal to theinspection camera (light table protractor should read 0°). For ET 30° and 45°, orient the light source so thatthe protractor reads 30° and 45° respectively.

3M™ Advanced Llight Control Film (ALCF)

Measurement (continued)
Item

Description

Color Shift

Equipment:
3M Color Shift tester. Photo Research, Inc., SpectraColorimeter, Model PR-650 SpectraScan. Absorbing
Polarizer (adjustable angle) Backlight System. Normally white, no-electrical driving, edge lit backlight or LED
advanced illuminations backlight.
Procedure:
Using Y, x, y color coordinate measurements, measure and record the x and y values for the color of thebacklight with and without a test piece at both 0° and 30° orientation. For 0° Color Shift, orient the lightsource such that it is normal to the inspection camera. For 30° Color Shift, orient the light source such that
it is 30° to the inspection camera. Color Shift = |Color (without louver film on backlight) – Color (with louver
film on backlight)|. Δx = Color Shift of the x color coordinate. Δy = Color Shift of the y color coordinate.

HazeEquipment:
BYK-Gardner HazeGard Plus 4725.
Procedure:
Place the front surface of the louver film flat against the haze port and capture reading.

Color Change,
Delta E*

Equipment:
BYK Color Sphere (equivalent to Minolta Co., Ltd., Spectrophotometers cm-3500).
Procedure:
ASTM E 1164. Light source: D65/10. Measurement: Transmission.
Measure color (L*a*b*” of transmitted light through louver film before and after environmental weathering.
Color change, DeltaE*, is calculated as follows:
ΔE* = √ΔL*2 + Δa*2 + Δb*2

Storage and Handling

Limited Warranty

Product must be stored flat, in its original 3M packaging, out ofsunlight, and in a clean, dry (relative humidity between 30% and60%) area that is maintained at a temperature between 10°C
and 30°C. Avoid applying pressure to, or resting objects on, theproduct to prevent marking, denting or deforming. Hold productby the edges to prevent soiling of the view area and wear gloves
to prevent fingerprints or nail marks. Do not slide the product.

3M warrants that each Product will conform to our Customer
Quality Standard (the “3M Warranty”) for 12 months after
3M’s Product shipment (“Warranty Period”). Any engineeringor technical information, recommendations, installation
instructions, jumbo delivery standards, certificates of analysis,
and other information or materials relating to Products (“OtherProduct Information”) is provided for the Product buyer’s
convenience and is not warranted. 3M will have no obligations
under the 3M Warranty with respect to any Product that has
been: (a) not stored, handled, or transported in accordance withthis Warranty or Other Product Information; or (b) modified ordamaged by anyone other than 3M.

3M Display Materials & Systems Division
3M Center, Building 235-1E-54St. Paul, MN
55144-1000 U.S.A.
Phone
Web1-800-3M HELPS
3M.com/AutoHMI

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