Plates

Plates are used as optical windows in optoelectronic devices, protective glasses, light filters, filters, substrates for mirrors and grids, pressure glasses, screens and other purposes according to customer drawings. The material used is optical glass, quartz glass, Cerodur, Sitall, optical ceramics.

The production of optical windows for image intensifier tubes is carried out from own-produced electrovacuum glass, which can significantly reduce the costs and the price of windows as compared to existing analogues.

For the manufacture of plates, as part of the observation devices, we use glass LK107 of own production, which provides resistance to radiation.

Shape of plates:

Plates of complex configuration
Round
Rectangular
Oval
Wedges

Technical specifications

	Plate	Wedge
Measurements of flat surfaces, mm	3,0 – 250,0	3,0 – 250,0
Diameter, mm	5 – 320	5 – 320
Diameter tolerance	h 7	h 7
Thickness, mm	0,3 – 50,0	0,3 – 50,0
Surface accuracy	N=0,1 (λ/10)	N=0,1 (λ/10)
Surface quality	In accordance with GOST 11141	In accordance with GOST 11141
Wedge shape of the plate	1”	10”
Coating	Ref. to our coating catalog (page 14)	Ref. to our coating catalog (page 14)

Optical Vacuum Coatings

Coating	Substrate	Type of component (lens, cemented lenses, prism, cemented prisms, plane-parallel plates)	Spectrum characteristics of the coatings	Overall dimensions, mm
1	2	3	4	5
AR coating
1.Single wave coating. The coating provides antireflection for a single wavelength.	Optical glasses with a refractive index n_е from 1,44 to 1, 8138	Lenses, plates, wedges, prisms	– R ≤ 0,3 % for λ = 550 nm – R ≤ 0,3 % for λ = 632,8 nm – R ≤ 0,3 % for λ = 650 nm – R ≤ 0,3 % for λ = 720 nm – R ≤ 0,3 % for λ = 808 nm – R ≤ 0,3 % for λ = 860 nm – R ≤ 0,3 % for λ = 1060 nm – R ≤ 0,3 % for λ = 1064 nm – R ≤ 0,3 % for λ = 1540 nm	Lenses: from Ø 5 mm to Ø 80 mm. Plates, wedges: – from Ø 5 mm to Ø 80 mm; – from 8х8 mm to 70х70 mm. Prism types АР-90°, АР-0°, БР-180°, БС-0°, АкР-90°, БП-90°: Size of the sides – from 7х7 mm to 40х40 mm. Diameter from 3 mm to 8 mm, length from 50 mm to 80 mm.
2. Multiwave and broadband antireflection. The coating provides antireflection for two or more wavelengths.	Optical glasses with a refractive index nе from 1,44 to 1, 8138 К8, silica KGW	Lenses, plates, wedges, prisms Active elements	– R_ср_.≤ 0,5 % for ∆λ = (420 – 700) nm – R_ср_.≤ 0,5 % for ∆λ = (650 – 1000) nm. – R_А ≤ 0,8 %. – R_λ ≤ 0,5 % for λ=755 nm and λ=1064 nm – R_λ ≤ 1 % for λ = 1064 nm – R_λ ≤ 0,5 % for λ = 1351 nm – R_λ ≤ 0,5 % for λ = 1538 nm
High-reflection coating
1. Metal-dielectric coatings	К8	Plates, prisms	– R_λ ≥ 99 % for λ = 1064 nm – R_λ ≥ 96 % for λ = 1067 nm, α = 45°. – R_λ ≥ 96 % for λ = 1067 nm, α = 48°. – R_λ ≥ 96% for ∆λ=(600–700)nm, α = 45°. – R_λ ≥ 96 % for λ = 632,8 nm – R_λср_. ≥ 93 % for ∆λ = (480 – 650) nm – R_А ≥ 90 %, α = 45°.	Plates: – from Ø 5mm to Ø 80 mm; – from 8х8 mm to 70х70 mm. Prism types АР-90°, Ар-0°, БР-180°, БС-0°, АкР-90°, БП-90°: Size of the sides – from 7х7 mm to 40х40 mm.
2. Dielectric coatings	К8	Lenses, prisms, plates	– R_λ ≥ 96 % for λ = 632,8 nm – R_λ ≥ 90 % for ∆λ = (640 – 690) nm – R_λ ≥ 90 % for λ = (500 – 550) nm – R_λ ≥99% for λ=755nm and for λ=1064 nm – R_λ ≥ (95 ± 1) % for λ = 1064 nm – R_λ ≥ 99 % for λ = 1064 nm
Beam-splitting coating
1. For unpolarized radiation	К8 К8 К8	Prisms (measured on glued prisms at the angle of incidence of radiation α = 45 ° to the hypotenuse) Lenses, plates (measured R at an angle of incidence of radiation α = 8°, measured T at an angle of incidence of radiation α = 0°) Plates (measured at the angle of incidence of radiation α = 45°)	– Т = (50 ± 5) % for λ = 540 nm – Т = (47 ± 3) % for λ = (530 ± 30) nm – Т = (50 ± 5) % for λ = 680 nm – Т_ср_. = (70 ± 5) % for ∆λ = (400–750) nm – Т = (86 – 90) % for λ = (540 ± 10) nm – Т_ср_. = (28 – 35) % for ∆λ = (420–820) nm – Т_ср_. ≥ 70 % for ∆λ = (475 – 625) nm Т ≤ 30 % for λ = 1064 nm – R_λ = (10 ± 3) % λ = 1060 nm – R_λ = (25 ± 5) % for λ = 1060 nm – R_λ ≤ 10 % for λ = 560 nm, R_λ ≥ 70 % for λ = 660 nm – Т_∆_λ_. ≥ 75 % for ∆λ = (420 – 615) nm, Т ≤ 30 % for λ = 650 – 670 nm – R_∆_λ_. ≤ 15 % for ∆λ = (400 – 550) nm, R ≥ 85 % for ∆λ = 630 – 670 nm – Т_∆_λ_. ≤ 10 % for ∆λ = (600 – 700) nm, Т ≥ 94 % for λ = 1067 nm	Prism types АР-90: Size of the sides -from 7х7 mm to 40х40 mm. Lenses: from Ø 5m to Ø 80 mm. Plates: – from Ø 5 mm to Ø 80 mm; – from 8х8 mm to 70х70 mm. Plates: – from Ø 5 mm to Ø 80 mm; – from 8х8 mm to 70х70 mm.
2. For polarized radiation	К8 ТК121 К8 К8 К8	Prisms (measured on glued prisms at the angle of incidence of radiation α = 45° ° to the hypotenuse) Prisms (measured on glued prisms at the angle of incidence of radiation α = 48°57′ ° to the hypotenuse) Prisms (measured on glued prisms at the angle of incidence of radiation α = 34°50′ ° to the hypotenuse) Prisms (measured at the angle of incidence of radiation α = 45°)	– Rs/Ts = 2 ÷ 4 for λ = 633 nm – Rs/Ts = 0,6 ÷ 1 for λ = 633 nm – Rs/Ts = 0,8 ÷ 2 for λ = 633 nm – Тр ≥ 90 % and Ts ≤ 2 % for ∆λ = (900 ± 25) nm – Тs = (45 – 56) % for λ = 633 nm – Тs = (63 – 70) % for λ = 633 nm – Тр = (51 ± 5) % and Ts = (48 ± 5) % for λ = 633 nm	Prism types АР-90: Size of the sides -from 7х7 mm to 40х40 mm. Prism types АР-90: Size of the sides – от 7х7 mm to 40х40 mm. Prism types АР-90: Size of the sides -от 7х7 mm to 40х40 mm. Prism types АР-90: Size of the sides – от 7х7 mm to 40х40 mm. Plates: – from Ø 5 mm to Ø 80 mm; – from 8х8 mm to 70х70 mm.

Plates

Certificated

Technical specifications

Optical Vacuum Coatings

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