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What is a polaroid?
Called the polaroid polarized piece, can control the specific direction of polarization of the light beam.Natural light through a polarized light, and polarization direction of vibration through axis vertical light will be absorbed through the light only through shaft vibration direction and parallel polarized light.
Regular polarized light structure is a kind of sandwich structure, composed of all kinds of thin film materials and laminating, subject generally protected through double tensile support layer, function layer with a layer of polarization mechanism, the main layer's main function is as follows:
TAC film: polaroid support, protection and prevent retraction, average thickness of 25 ~ 40 um
PVA membrane: polarization mechanism function layer, normally the thickness of the 12 um
PSA film: pressure sensitive rubber, used to polaroid attached with a display screen, average thickness of 25 um
In practice, according to the different application, in the light TAC layer on the surface will have HC (Hard Coating Anti scratch), AR (Anti - Reflection Anti glare) and AF (Anti - Fingerprint Fingerprint proof) attached to the processing function of plating or Coating.
Polaroid structure schematic (source: three spectrum),
Polaroid the composition of raw materials is a little different according to different product requirements, including TAC film and PVA film, protective film, incremental film, pressure sensitive adhesive, phase difference film and TAC film replacement materials (PET/PMMA/COP), etc.
Main PVA optical film for poly (vinyl alcohol) actually, it is the core part of the polaroid, determines the polarization properties of the polaroid, optical transmittance, tonal, the index.
The TAC optical film is a kind of optical coating.Because PVA membrane made of polarized layer suction, fade easily and loss of polarization performance, so in PVA film on both sides of the need to adopt the uniform layer of optical transparency, good TAC (three Cellulose acetate, Triacetyl Cellulose) thin film from water and air, protect the polarized layer.
Constitute a polaroid various features and functions of the main membrane material has shown in the table below:
Called the polaroid polarized piece, can control the specific direction of polarization of the light beam.Natural light through a polarized light, and polarization direction of vibration through axis vertical light will be absorbed through the light only through shaft vibration direction and parallel polarized light.
Regular polarized light structure is a kind of sandwich structure, composed of all kinds of thin film materials and laminating, subject generally protected through double tensile support layer, function layer with a layer of polarization mechanism, the main layer's main function is as follows:
TAC film: polaroid support, protection and prevent retraction, average thickness of 25 ~ 40 um
PVA membrane: polarization mechanism function layer, normally the thickness of the 12 um
PSA film: pressure sensitive rubber, used to polaroid attached with a display screen, average thickness of 25 um
In practice, according to the different application, in the light TAC layer on the surface will have HC (Hard Coating Anti scratch), AR (Anti - Reflection Anti glare) and AF (Anti - Fingerprint Fingerprint proof) attached to the processing function of plating or Coating.
Polaroid structure schematic (source: three spectrum),
Polaroid the composition of raw materials is a little different according to different product requirements, including TAC film and PVA film, protective film, incremental film, pressure sensitive adhesive, phase difference film and TAC film replacement materials (PET/PMMA/COP), etc.
Main PVA optical film for poly (vinyl alcohol) actually, it is the core part of the polaroid, determines the polarization properties of the polaroid, optical transmittance, tonal, the index.
The TAC optical film is a kind of optical coating.Because PVA membrane made of polarized layer suction, fade easily and loss of polarization performance, so in PVA film on both sides of the need to adopt the uniform layer of optical transparency, good TAC (three Cellulose acetate, Triacetyl Cellulose) thin film from water and air, protect the polarized layer.
Constitute a polaroid various features and functions of the main membrane material has shown in the table below:
