Profile: Sine Patterns, LLC supplies sinusoidal patterns as photographic images for evaluation of materials, lenses, cameras and electro-optical systems. We produce photomasks, glass reticles & replicas as chrome images on any glass type/size. Our microdensitometer scans represent a basic calibration of sinusoidal test patterns and are included with each test pattern. Our random test patterns tests MTF of any detector array using a pseudo-natural test scene.