Name: 75mm Dia. x 5mm Thick, 8-12μm AR Coated & DLC Coated, Ge Window
Brand: TECHSPEC
SKU: 13-799
Price: €1.375,13

Bevel:

Protective as needed

Clear Aperture (%):

Clear Aperture CA (mm):

67.50

Diameter (mm):

75.00 +0.0/-0.1

Thickness (mm):

5.00 ±0.1

Coating:

S1: DLC Coating
S2: BBAR (8000-12000nm)

Coating Specification:

AR: R_avg ≤0.5% @ 800 - 12000nm

Edges:

Fine Ground

Knoop Hardness (kg/mm²):

780

Parallelism (arcmin):

Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More

Germanium (Ge)

Surface Flatness:

λ/10 @ 10.6μm

Surface Quality:

60-40

Type:

Protective Window

Wavelength Range (nm):

8000 - 12000

Coating Abrasion:

AR: Moderate, per MIL-C-48497A Paragraph 4.5.3.3
DLC: Severe, per MIL-C-675C Paragraph 4.5.10

Coating Adhesion:

AR: per MIL-C-48497A Paragraph 4.5.3.1
DLC: per MIL-M-13508C Paragraph 4.4.6

Coating Humidity:

AR: per MIL-C-48497A Paragraph 4.5.3.2
DLC: ≥24 Hours per MIL-C-675C paragraph 4.5.8

Coating Salt Solubility:

AR: N/A
DLC: ≥24 Hours Immersion per MIL-C-675C paragraph 4.5.7

Coating Salt Spray:

AR: N/A
≥24 Hours per MIL-C-675C paragraph 4.5.9

Coating Solubility and Cleaning:

AR: per MIL-C-48497A Paragraph 4.5.4.2
DLC: N/A

Coating Temperature (°F):

AR: -80 to +160 per MIL-C-48497A Paragraph 4.5.4.1
DLC: -80 to +160 per MIL-M-13508C Paragraph 4.4.4

Coating Wiper Durability:

AR: N/A
DLC: ≥5,000 Wipes of Sand/Slurry per TS-1888

Note:

Arrow on substrate edge points towards DLC coated surface

Regulatory Compliance

RoHS 2015:

Compliant

Reach 223:

Compliant

Product Family Description

Meets Severe Abrasion Requirements of MIL-C-675C
≥90% Transmission from 8 - 11.5µm
Ideal for Harsh Environments
Uncoated, 3-5 Micron BBAR, and 8 - 12 Micron BBAR Coated Germanium Windows are also Available

TECHSPEC® Diamond-Like Carbon (DLC) Coated Germanium Windows have been designed with durability in mind. Featuring a high efficiency broadband anti-reflection coating on one surface and a specially designed DLC coating on the other surface, these windows feature excellent transmission and environmental resistance. The DLC coated surface is designed to withstand temperature cycling from -80 to +160°F, salt spray for a continuous period of 24 hours, salt solubility for an immersion period of 24 hours, and 5,000 wiper oscillations in a sand and slurry mixture. Further, TECHSPEC DLC Coated Germanium Windows meet the MIL-C-675C requirements for severe abrasion.

Technical Information

Coating Specifications
Specification	AR Coating	DLC Coating
Adhesion	per MIL-C-48497A Paragraph 4.5.3.1	per MIL-M-13508C Paragraph 4.4.6
Abrasion	Moderate, per MIL-C-48497A Paragraph 4.5.3.3	Severe, per MIL-C-675C Paragraph 4.5.10
Humidity	per MIL-C-48497A Paragraph 4.5.3.2	≥24 Hours per MIL-C-675C paragraph 4.5.8
Salt Solubility	-	≥24 Hours Immersion per MIL-C-675C paragraph 4.5.7
Salt Spray	-	≥24 Hours per MIL-C-675C paragraph 4.5.9
Temperature (°F)	-80 to +160 per MIL-C-48497A Paragraph 4.5.4.1	-80 to +160 per MIL-C-48497A Paragraph 4.5.4.1
Solubility and Cleaning	per MIL-C-48497A Paragraph 4.5.4.2	-
Water Solubility	24 Hours, per MIL-C-48497A Paragraph 4.5.5.3	-
Wiper	-	≥5,000 Wipes of Sand/Slurry per TS-1888

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