Blik

Russia, 620067, Ekaterinburg

Bluher street 3

telephon: (343) 365-77-32
fax: (343) 365-38-55

Blic Inc

Company profile:

Blic Inc. specializes in the field of development and manufacturing of optical elements with special optical coatings of various assignments including:

· Development and manufacturing of optical coatings in ultra-violet, visible and near infrared spectral regions, mainly for ophthalmic glass lenses.

· Band and narrow-band filters, cut on filters, beam splitters, antireflection coatings and dielectric mirrors at 0.4 - 14.0µm are produced for items manufacturing and special purposes.

The firm was set up in 1991. It consists of highly skilled experts in the field of optical coatings development and manufacturing. It has wide opportunities of an optimum design of optical coatings calculation according to the customer’s technical requirements.

In industrial division business, it has the necessary equipment for optical coatings manufacturing and quality control:

· Vacuum machines for coatings manufacturing equipped with electron-beam and thermal evaporators and the photometric system to control the layers thickness over evaporation process.

· Ultrasonic washing machines for lens cleaning.

· Spectrophotometers for optical measurements and special equipment for mechanical and humidity durability testing.

Monthly production capacity is up to 20,000 pieces of 70 mm diameter glass lenses with various coatings and up to 2,000 pieces of silicon wafers with 1.1-15µm infrared coatings.

Our advantages are:

· Application of progressive high technology production;

· Unique film-forming materials;

· Individual approach to each customer in a combination to flexible price policy;

· Work in contact to the end user;

· Sophisticated quality control system.

Scientific Research:

Constant theoretical research and the analysis of practical results conduct to occurrence of new technical decisions in coatings manufacturing.

New coatings are developed annually; equipment modernization is made for their manufacturing. Coating tests are carried out by special equipment providing conditions, close to real conditions of their operation.

Products: Manufacturing and delivery of infrared cut on filters and AR-coated protective windows.

1. Silicon substrate cut on filters.

Geometrical parameters:

Thickness, mm	Diameter, mm
0.35	Up to 76
0.5	Up to 100
0.9	Up to 100

Optical characteristics:

Parameter	Value	Wavelength range
Average transmission Тav	< 0.1%	Up to 4 µm
Absolute transmission Tav	< 1%	Up to 4 µm
Average transmission Tav	< 0.5%	4 – 5µm
Cut on wavelength λ5%	5.5 ± 0.3µm	--------
Average transmission Tav	> 80% (t = 0.35 mm) > 77% (t = 0.5 mm) > 73% (t = 0.9 mm)	7.5 – 13.5 µm or 6 – 13.5µm

Fig.1. Silicon cut on filter for 7.5 – 13.5 µm (0.5 mm thick).

Fig.2. Silicon cut on filter for 6 – 13.5 µm (0.9 mm thick).

2. AR-coated silicon protective windows

Thickness

0.35, 0.5 or 0.9 mm

Diameter

Up to 76mm

Average transmission (5 – 15 µm)

≥80% (t = 0.35 mm)

≥78% (t = 0.5 mm)

≥75% (t = 0.9 mm)

Fig.3. AR-coated silicon protective window (0.35 mm).

Both AR and cut on coatings meet with the requirements of MIL - C - 48497 A standard:

Test method Reference

Humidity MIL – C – 48497 A 4.5.3.2.

Moderate Abrasion MIL – M - 48497 A 4.5.3.3.

Adhesion MIL – M - 48497 A 4.5.3.1.

Water immersion 8 hours

3. AR-coated zinc selenide protective windows.

Fig.4. ZnSe AR-coated protective window, average transmission 94.3% (8 – 12.5 µm).

4. Calculation and development of optical coatings under customer’s specification for 0.4 – 15 µm is also available.