Document Type : Original Article
Since most optical imaging system depends on tracking surface detail, a key discovery was that most
modern laminated work surfaces are microscopically embossed, presumably to reduce glare. When this
texture is obliquely illuminated by a light source a pattern of highlights and shadows (speckle pattern)
is revealed. The performance of the optical imaging systems with different diffuse has been studied. It
is important for accurate study to know the characteristics of these surfaces produced by Gabbor
Single-exposure Gabbor holograms using different types of light sources (i.e. He-Ne laser, diode laser,
various color LEDs), diffusers, and holographic plates is presented. Circular interference fringes from
single-exposure Gabbor hologram were recorded.
Relations between the squared radii of the fringes and their interference order for each light source
were presented to calculate the wavelengths of diode laser, various color LEDs,. The measured
wavelengths were found to be in good agreement with the real one. So, we can differentiate between
all of these diffusers for designing a new optical imaging system based on the laser speckle pattern.