The MLA Series of Microlens Arrays (click here to see an enlarged photo) are 10 mm x 10 mm fused silica lens arrays. Fused silica offers excellent transmission characteristics from the UV to IR, making it ideal for a range of applications. The microlenses have a plano-convex shape, a lens pitch of 150 µm or 300 µm, and are arranged in a square grid. In addition, the lenses are formed using photolithographic techniques based on semiconductor processing technology, which allows for excellent uniformity in the shape and position of each microlens. This method produces microlens arrays where the spot size of each microlens is nearly diffraction limited, unlike some microlens arrays produced from molded epoxy. The MLA150-5C has a chrome mask that blocks light from being transmitted unless it goes through a microlens. The MLA150-7AR and MLA300-14AR have a broadband AR coating to reduce the surface reflections in the 400 - 900 nm spectral region to below 1 %.
