SilflexTM (MKII, VIS, UV)

Versatile Silver Mirrors, giving highest light Output from UV to FIR

SilflexTM MKII
SilflexTM MKII is a broadband high-reflectivity mirror coating offering unprecedented performance and durability. It is virtually insensitive to polarization and angle of incidence, yet maintains more than 98% reflectivity from VIS to FIR wavelength range.

SilflexTM VIS
Unlike enhanced aluminium and all-dielectric mirror coatings SilflexTM VIS blue enhanced is virtually insensitive to polarization and angle of incidence, yet maintains more than 98% reflectivity for VIS wavelength range.

SilflexTM UV
SilflexTM UV as member of the SilflexTM family features a higher reflectivity in the UV wavelength range as the other SilflexTM mirrors. It is virtually insensitive to polarization and angle of incidence, yet maintains more than 89% reflectivity in the UV-A wavelength range and up to more than 97% reflectivity in the NIR wavelength range.

Versatile Silver Mirrors, giving highest light Output from UV to FIR

Benefits

Excellent environmental stability due to protective dielectric coatings
Very low angle of incidence dependency
Virtually free of polarization effects
No color shift
Designed specifically to meet demands of customer systems
Engineering design support
EU RoHS directive compliant

Applications

All reflective optics at UV, VIS, IR and FIR
Optical sensors and instruments
Metrology & Inspection (e.g. Spectrometer)
Safety & Security
Technical Lighting
Data projection systems
Automotive Lidar ranging systems
Space applications

Technical Data

Substrate type

Floatglass, other substrates e.g. plastic or metal on request. Silflex™ are applicable as well on customer supplied substrates.

Cleaning

SilflexTM withstands immersion in acetone, ethanol, etc., as specified in MIL-C48497, para. 4.5.4.2. It can be cleaned with a soft cotton cloth soaked in mild soapy water, ethanol or other non-abrasive substances.

Technical Data SilflexTM MKII

Rabs. >= 98.5% at 550–650 nm

Ravg. >= 98% at 450–750 nm

Ravg. >= 97.5% at 700–3500 nm

Rabs. >= 98% at 3500–12000 nm

AOI = 45°

r-pol.

Environmental resistance and durability

The coating withstands the following tests on glass substrates:

Temperature

(MIL-M-13508C, para. 4.4.4.)

5 hrs each at –62° and 71°C

(ISO 9022-2)

16 hrs at –62°C and 2 hrs at +71°C

Abrasion

(MIL-M-13508C, para. 4.4.5.)

50 strokes/cheesecloth

(ISO 9211-4-01)

50 strokes/cheesecloth

Adhesion

(MIL-M-13508C, para.4.4.6.)

Scotch tape test, slow

(ISO 9211-4-02-01)

2–3 s /25 mm, tape 3M

Humidity

(MIL-M-13508C, para. 4.4.7.)

24 hrs. at 49°C r.h. 95%

(ISO 9022-2)

24 hrs. at +40°C, r.h. 95%

Salt atmosphere

(MIL-STD-202G 101 EC)

24 hrs. at 35°C r.h. 95%

(ISO 9022-4)

16 hrs. at 35°C, fog test

Technical Data SilflexTM VIS

Rabs. >= 97% at 425–490 nm (blue enhanced)

Ravg. >= 98% at 420–680 nm

AOI = 45°

r-pol.

Environmental resistance and durability

The coating withstands the following tests on glass substrates: as SilflexTM MKII

Technical Data Silflex™ UV

Rabs. >= 89% at 350–600 nm

Ravg. >= 94.5% at 350–600 nm

Rabs. >= 97% at 600–1100 nm

Ravg. >= 97.5% at 600–1100 nm

AOI = 45°

r-pol.

Environmental resistance and durability

The coating withstands the following tests on glass substrates: as SilflexTM MKII but except for salt atmosphere test which is not applied

SilflexTM – Principle curves at AOI = 45°, r-pol between 300–2000 nm

SilflexTM – Principle curves at AOI = 45°, r-pol between 2000–12000 nm

> PDF Download