Testing – Rainbow Research Optics

Testing

Environmental
and
Durability
Testing

Image: Salt fog spray test being
conducted on six witness samples

Standard MIL-SPEC Packages

starting at $399!

RROI offers custom and standard mil-spec testing packages starting at $399. Price is for typical Mil-Std testing that is 1 business day or less. Standard testing methods available include MIL-PRF-13830B and MIL-F-48616, and more.

Military Specifications Definitions

MIL-C-48497A (STANDARD RROI TEST)
This specification establishes the durability requirements for single layer and multi-layer interference coatings used on optical materials. Optical components cannot show signs of deterioration or abrasion after each of the following tests:

Military Specifications Definitions

MIL-C-48497A (STANDARD RROI TEST)

This specification establishes the durability requirements for single layer and multi-layer interference coatings used on optical materials. Optical components cannot show signs of deterioration or abrasion after each of the following tests:

Required:

  • Adhesion: A 1/2″ wide strip of cellophane tape is pressed against the coated surface and quickly removed
  • Humidity: Components are exposed to an atmosphere of 120° ± 4° and 95 to 100% relative humidity
  • Moderate Abrasion: Coated optical components are rubbed with a cheese cloth pad for 25 cycles (50 strokes)
  • Temperature: Components are exposed to temperatures of -80° and +160° for 2 hours at each temperature
  • Solubility and Cleanability: Coated components are immersed in trichloroethylene, acetone, and ethyl alcohol and wiped with cheesecloth

Optional:

  • Severe Abrasion: A MIL-E-12397 compliant eraser is rubbed over the coated surface for 20 complete cycles (40 strokes)
  • Salt Solubility: Coated components are immersed in a saline solution for 24 hours
  • Water Solubility: Coated components are immersed in distilled water

MIL-C-675C

This specification establishes the durability and abrasion resistance requirements of anti-reflection interference films used on optical materials. Optical components cannot show signs of deterioration or abrasion after each of the following tests:

Required:

  • Salt Solubility: Coated optical components are immersed in a saline solution for 24 hours
  • Humidity: Components are exposed to an atmosphere of 120° ± 4° and 95 to 100% relative humidity
  • Salt Spray Fog: Components are exposed to a salt spray fog for 24 hours
  • Severe Abrasion: A MIL-E-12397 compliant eraser is rubbed over the coated surface for 20 complete cycles (40 strokes)
  • Moderate Abrasion: Coated optical components are rubbed with a cheese cloth pad for 25 cycles (50 strokes)
  • Adhesion: A 1/2″ wide strip of cellophane tape is pressed against the coated surface and quickly removed

MIL-C-675C

This specification establishes the durability requirements for a mirror coating consisting of a deposited aluminum reflective film overlaid with a transparent dielectric protective film. Optical components cannot show signs of deterioration or abrasion after each of the following tests:

Required:

  • Temperature: Components are exposed to temperatures of -80° and +160° for 2 hours at each temperature
  • Adhesion: A 1/2″ wide strip of cellophane tape is pressed against the coated surface and quickly removed
  • Moderate Abrasion: Coated optical components are rubbed with a cheese cloth pad for 25 cycles (50 strokes)

Optional:

  • Humidity: Components are exposed to an atmosphere of 120° ± 4° and 95 to 100% relative humidity
  • Salt Spray: Components are exposed to a salt spray

Capabilities

Rainbow Research Optics, Inc. (RROI) is an ITAR compliant and our quality management systems are ISO 9001:2015 certified. This allows us to customize testing procedures while maintaining compliance and accountability.

HumidityTemperature between 60°F to 200°F
Relative humidity from 5% to 99%
Temperature CyclingTemperature between -75°C (-103°F) to 200°C (392°F)
Ramp rate of thermal cycling (up to 10°C/min)
Salt Spray FogParts/components are exposed to a salt spray fog for a set period of time
Temperature between 60°C (140°F) to 100°C (212°F)
AbrasionEither cheesecloth (CCC-C-440) or eraser (MIL-E-12397) abrasion material
Either 1.0lb (moderate abrasion) or 2.0-2.5lb (severe abrasion) of pressure
AdhesionA 1/2″ wide strip of cellophane adhesive is pressed against the coated surface
Adhesive can be removed rapidly or gradually
Salt SolubilitySodium chloride density in water
Duration of time soaking in salt water

Sample Temperature Cycle Report

Sample Humidity Report