High protection and high light transmittance, eavesdropping electromagnetic blocking two-in-one film, photoelectric film is made of a super wear-resistant PET protective film layer and a multi-layer film compounded with a nano-absorbing material of a specific wavelength by a special process. This specific wavelength nano-absorbing material adopts the composite absorption principle (absorption + reflection), which overcomes the difficulty of achieving high OD value for thin films. The laser blocking window film absorbs and reflects specific wavelength bands while maintaining high light transmittance and high definition, so as to achieve a laser-blocking effect of more than 99.9%.
1. This product is formulated according to the following national or industry standards:
GB/T 2680-1994 Determination of visible light transmittance, direct sunlight transmittance, total solar transmittance, ultraviolet transmittance and related window glass parameters of architectural glass
GA/T 744-2013 Automobile window glass sunshade film
GJB 5792 Classification and measurement method of electromagnetic shielding of military confidential information system
2. Functional description
2.1 Anti-infrared laser film
When attached to the window glass of a building, it can make the invading infrared laser energy attenuate sharply, thereby blocking the transmission path of infrared laser in and out of sensitive areas, achieving the purpose of anti-laser eavesdropping.
2.2 Visible light
Electromagnetic waves with wavelengths between 380 nanometers and 780 nanometers.
2.3 Infrared laser
Laser with wavelengths between 780nm and 1800nm.
2.4 Infrared laser transmittance
The ratio of the emitted infrared laser flux to the incident infrared laser flux.
2.5 Infrared laser reflectivity
The ratio of the reflected infrared laser flux to the incident infrared laser flux.
3. Product description
3.1 Product overview
Anti-infrared laser film products are made of materials that block or absorb infrared lasers, on which materials that attenuate electromagnetic waves can be added. The film product is made of special optical precision coatings, which have functions such as anti-laser eavesdropping, anti-peeping, and electromagnetic shielding, and has good light transmission effect.
3.2 Application environment
Mainly used in uncontrollable sensitive areas of buildings within the field of view of external windows, important confidential places, core key parts, etc.
IV. Functional requirements
4.1 Light transmission effect
Anti-infrared laser film products should have good light transmittance.
4.2 Infrared laser blocking
Anti-infrared laser film products should be able to block infrared lasers from entering and exiting sensitive areas to prevent laser eavesdropping and peeping.
V. Performance requirements
5.1 Visible light transmittance
Requirements for visible light transmittance of anti-infrared laser film products: not less than 40%.
5.2 Infrared laser transmittance
Infrared laser transmittance requirements for anti-infrared laser film products: infrared laser transmittance between 780nm and 900nm wavelengths should not be greater than 5%, and infrared laser transmittance between 900nm and 1800nm wavelengths should not be greater than 2%.
The infrared laser transmittance requirements for wavelengths between 780nm and 900nm can be reduced according to product design.
5.3 Consistency of infrared laser transmittance
The infrared laser transmittance of different parts of anti-infrared laser film products should meet the requirements of 6.2, and at least 3 points should be randomly sampled.
5.4 Infrared laser reflectivity
The infrared laser reflectivity of the film surface of infrared laser protective film products should not be greater than 10% within the wavelength range of 780nm to 1800nm.
5.5 Electromagnetic shielding effectiveness
The electromagnetic shielding effectiveness requirements of infrared laser protective film products within the frequency range of 30MHz to 10GHz are: not less than 30dB.
5.6 Response time
The detection alarm response time of infrared laser protective film products should not be greater than 1s.
5.7 Environmental adaptability
The environmental adaptability of infrared laser protective film products should be heat-resistant and radiation-resistant. According to the experimental method of GA/T744-2013, the current top domestic laser eavesdropping blocking and shielding anti-counterfeiting films should not have obvious defects such as cracks, turbidity, bubbles, discoloration, degumming, etc.
Laser Safety Window Film Install:
We can provide free cutting service (1m/2m/3m/5m/10m length) and accept special requirements for a full spectrum.
Product Application:
Due to the special product, the application of laser protective film includes the protection of laser equipment operators but is not limited to this, such as security, military, criminal investigation, etc.
Contact Details:
If you have any ideas, welcome to talk with us. No matter where our customers are and what our requirements are, we will follow our goal to supply high quality, low price, and best service for our customers.
Email: info@loshield.com
Tel: 0086-18092277517
FAX : 86-29-81323155
WhatsApp：0086-18092277517
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