Direct and recycle light
Use prismatic films for viewing-angle control and reflective polarizers for polarization recycling. Confirm orientation against the LCD and adjacent layers.
Backlight Optics / Backlight Films
Shape the light. Improve the backlight.
Explore prismatic brightness films, reflective polarizers, reflectors and diffusers for custom modules, enhancement and repair. Select by optical function, then confirm the exact grade, size and orientation.
Material references are starting points for selection. Cut dimensions, usable area, thickness, axis datum and supplied grade must be confirmed. A catalog entry does not establish current stock or interchangeability.
Add items to your Interest List for application review and quotation. Selection does not confirm stock, price, fit or design release.
Select the film by its optical job.
Review the stack, the viewing requirement and the cut-part geometry together.
Mix and recover light
Diffusion and reflector choices affect uniformity and the way light moves through the cavity. Evaluate the combination with the source and light guide.
Define the cut part
Specify outline, aperture, thickness, tabs, notches and an orientation datum. Review handling, surface protection and the exact grade before substitution.
Explore by function.
Open a group to compare descriptions and select references.
Prismatic brightness films (13 references)
BEF-type films redirect light toward the intended viewing region. Match prism pitch and orientation to the display.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / Vikuiti BEF III-T 5T / 14 ×14 in
PN: BFM-3001-00
Clear-backed prismatic film with randomized prisms, 90° apex and nominal 50 µm pitch. Published applied thickness 155 µm without liners.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / Vikuiti BEF III-M / 14 ×14 in
PN: BFM-3003-00
Matte-backed prismatic film with randomized prisms, 90° apex and nominal 50 µm pitch. Published applied thickness 160 µm without liners.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / Vikuiti BEF II 90/50 / 14 ×18 in / horizontal
PN: BFM-3008-00
Prismatic film redirects off-axis backlight toward the viewing direction. Prism apex 90° and pitch 50 µm. Published thickness differs by document revision; confirm the supplied construction.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / Vikuiti BEF II 90/50 / 14 ×18 in / vertical
PN: BFM-3009-00
Prismatic film redirects off-axis backlight toward the viewing direction. Prism apex 90° and pitch 50 µm. Published thickness differs by document revision; confirm the supplied construction.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / Vikuiti BEF II 90/24 / Material Reference
PN: BFM-03014-00
Prismatic film with 90° apex and 24 µm pitch. Published applied thickness 140 µm without liners. Evaluate the prism pitch against the LCD pixel structure.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / Vikuiti BEF III-T 10T / Material Reference
PN: BFM-03015-00
Prismatic film on a thicker polyester support. Published applied thickness 278 µm without liners. Exact-grade optical data must be confirmed.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / Vikuiti TBEF / Material Reference
PN: BFM-03016-00
Thin prismatic brightness film for compact backlight stacks. Published applied thickness 62 µm without liners.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / BEF3-T-155n Auto / Material Reference
PN: BFM-03019-00
Prismatic brightness film with 90° apex and 50 µm pitch. Published caliper 155 ±10 µm. Evaluate performance in the complete display stack.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / BEF3-T-205 ASn Auto / Material Reference
PN: BFM-03020-00
Prismatic brightness film with 90° apex and 50 µm pitch. Published caliper 205 ±15 µm. Evaluate performance in the complete display stack.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / AEF-155 / Material Reference
PN: BFM-03021-00
Prismatic brightness film with 90° apex and 50 µm pitch. Published caliper 155 ±10 µm. This is a separate material reference from other films of the same gauge.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / BEF2 T 155n / Material Reference
PN: BFM-03022-00
Prismatic brightness film using non-halogenated acrylic on polyester. Published applied thickness approximately 150 µm. Confirm the production specification.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / BEF4 GT 90/24 / Material Reference
PN: BFM-03023-00
Thin prismatic film with 90° apex and 24 µm pitch. Published applied thickness approximately 90 µm without liners.
Representative prism-film construction from 3M application guidance; not to scale.
BFM / 3M / BEF3 M2 155n / Material Reference
PN: BFM-03024-00
Matte prismatic film combining angular redistribution and diffusion. Published applied thickness approximately 154 µm without liners.
Reflective polarizers (15 references)
DBEF and related films recycle polarization in the backlight cavity. These have a different function from prismatic BEF.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / Vikuiti DBEF-D400 / 14 ×14 in / 45°
PN: BFM-3002-00
Diffuse multilayer film recycles polarization in an LCD backlight. Nominal thickness 400 µm; published haze 80% ±4%. Align its transmission axis with the LCD rear polarizer.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / Vikuiti DBEF-E / 17 ×17 in / 45°
PN: BFM-3004-00
Embossed multilayer reflective polarizer for LCD backlights. Select transmission-axis orientation and confirm the exact supplied thickness.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / Vikuiti DBEF-E / 17 ×17 in / 0°
PN: BFM-3005-00
Embossed multilayer reflective polarizer for LCD backlights. Select transmission-axis orientation and confirm the exact supplied thickness.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / Vikuiti DBEF-D400 / 17 ×17 in / 0°
PN: BFM-3006-00
Diffuse multilayer film recycles polarization in an LCD backlight. Nominal thickness 400 µm; published haze 80% ±4%. Align its transmission axis with the LCD rear polarizer.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / Vikuiti DBEF-D400 / 17 ×17 in / 45°
PN: BFM-3007-00
Diffuse multilayer film recycles polarization in an LCD backlight. Nominal thickness 400 µm; published haze 80% ±4%. Align its transmission axis with the LCD rear polarizer.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / Vikuiti DBEF-D400 / 14 ×14 in / 0°
PN: BFM-03013-00
Diffuse multilayer film recycles polarization in an LCD backlight. Nominal thickness 400 µm; published haze 80% ±4%. Align its transmission axis with the LCD rear polarizer.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / Vikuiti DBEF II / Material Reference
PN: BFM-03017-00
Multilayer reflective polarizer with matte surfaces. Nominal thickness 150 µm and published haze 40% ±10%. Align its transmission axis to the LCD rear polarizer.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / Vikuiti DBEF-D550 / Material Reference
PN: BFM-03018-00
Reflective polarizer with diffuse support layers for backlight polarization recycling. Exact thickness and controlled optical limits require confirmation.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / DBEF-D2-280 Auto / Material Reference
PN: BFM-03025-00
Diffuse reflective polarizer with polycarbonate support layers. Published caliper 280 ±40 µm and haze 75.5% ±10%.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / DBEF-D2-400 Auto / Material Reference
PN: BFM-03026-00
Diffuse reflective polarizer with polycarbonate support layers. Published caliper 390 ±40 µm and haze 79.5% ±10%.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / ARP-260 / Material Reference
PN: BFM-03027-00
Reflective polarizer with polycarbonate support layers. Published caliper 255 ±40 µm and haze 79.5% ±10%.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / ARP-320 / Material Reference
PN: BFM-03028-00
Reflective polarizer with polycarbonate support layers. Published caliper 320 ±40 µm and haze 41.5% ±10%.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / APF family / Material Reference
PN: BFM-03029-00
Reflective-polarizer family intended for lamination to the LCD rear absorbing polarizer. Exact grade, adhesive and laminate construction remain to be selected.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / SRP family / Material Reference
PN: BFM-03030-00
Reflective-polarizer family intended for lamination to the LCD rear absorbing polarizer. Exact grade, adhesive and laminate construction remain to be selected.
3M DBEF-D400 principle diagram; representative of polarization recycling, not grade-specific performance.
BFM / 3M / DBEF5-125 / Material Reference
PN: BFM-03031-00
Matte reflective polarizer with antistatic treatment for backlight polarization recycling. Exact caliper and controlled optical data require confirmation.
Backlight reflectors (4 references)
Specular and diffuse reflectors return escaping light into the optical system.
BFM / 3M / ESR 65 / Material Reference
PN: BFM-03032-00
Non-metallic multilayer reflector for a backlight recycling cavity. Published caliper 65 ±4 µm and minimum reflectivity 98%. Confirm the specified wavelength range and interfaces.
BFM / 3M / ESR 80v2 / Material Reference
PN: BFM-03033-00
Non-metallic multilayer reflector for a backlight recycling cavity. Published caliper 82 ±4 µm and minimum reflectivity 98%. Confirm the specified wavelength range and interfaces.
BFM / 3M / EDR-95 / Material Reference
PN: BFM-03034-00
Diffuse multilayer rear reflector for backlight light recycling. Exact thickness and wavelength-resolved reflectance require confirmation.
BFM / Toray / Lumirror white display-reflector grades / Material Reference
PN: BFM-03042-00
White polyester reflector family for diffuse backlight recycling. Select exact grade, gauge and reflectance spectrum.
Diffusion and light-shaping films (7 references)
Mix light, manage hot spots and tailor the angular distribution. Exact diffusion and turning characteristics depend on grade.
BFM / 3M / UDF family / Material Reference
PN: BFM-03035-00
Non-beaded optical diffuser for backlight homogenization. Select thickness, transmission, haze and angular distribution for the application.
Representative light-shaping patterns from the manufacturer datasheet.
BFM / Luminit / DBF / Material Reference
PN: BFM-03036-00
Prismatic brightness film on a nominal 250 µm polycarbonate substrate. Gloss or integrated-diffuser construction must be selected; total thickness requires confirmation.
Representative light-shaping patterns from the manufacturer datasheet.
BFM / Luminit / RTD / Material Reference
PN: BFM-03037-00
Prismatic film with rounded tips on a nominal 254 µm substrate. Optional diffusion construction and total thickness require confirmation.
Representative light-shaping patterns from the manufacturer datasheet.
BFM / Luminit / LSD circular / elliptical / Material Reference
PN: BFM-03038-00
Surface-structured diffuser family for circular or elliptical angular spreading. Select angular distribution, substrate, gauge and format before ordering.
Representative light-shaping patterns from the manufacturer datasheet.
BFM / Luminit / DTF for displays / Material Reference
PN: BFM-03039-00
Prismatic direction-turning film with a nominal 20° beam turn. The structured side faces the image source. Select construction and verify image quality.
BFM / Keiwa / OPALUS family / Material Reference
PN: BFM-03040-00
Optical diffusion-film family for LCD backlight uniformity. Exact grade, thickness, haze, transmission and angular profile remain to be selected.
BFM / Keiwa / OPASUKI family / Material Reference
PN: BFM-03041-00
Composite optical diffusion-plate family for direct-lit backlights. Select a construction matching the light-source spacing and desired angular distribution.
Related mirror film (1 reference)
A related optical mirror material; its suitability for a backlight must be evaluated separately.
OFM / 3M / RPM / TF110-45° / 12 ×12 in / 45° / adhesive
PN: OFM-03010-00
Reflective polarizing mirror film with adhesive for a display behind a partial mirror. Exact optical limits, adhesive construction and transmission-axis datum require confirmation.
Film data and integration guidance.
Use the exact grade and orientation when reviewing brightness, polarization, diffusion and reflector data.