Collimating lens

Easy to Use: This one-part strip coating simplifies your cleaning process. First Contact conforms to any contour. Just apply, dry, and peel to reveal the restored surface, which is now clean to the molecular level.

How to collimatelight

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Collimatedbeam divergence

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When this research was performed, the authors were with the Department of Physical Electronics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.

Coherentlight

Amazing success! We were able to clean small, permanently mounted, curved mirrors in a compact setting extremely easily - and the results were stellar! Much better than we ever could have done with our old methods. We love the product!

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Low Adhesion: First Contact is a non-toxic polymer system specially formulated to minimize surface adhesion: 1/20 the adhesion of Scotch tape.

Collimatedbeam

Mengyu Jia, Xueying Chen, Huijuan Zhao, Shanshan Cui, Ming Liu, Lingling Liu, and Feng Gao Opt. Express 23(2) 1337-1352 (2015)

Laser collimation

Collimated light sources in turbid media are difficult to describe within the diffusion approximation, because they do not meet the requirement of near isotropy. For precise calculation of light intensities close to the source, alternative descriptions of the light source are necessary. In this paper the transition of collimated light into diffusivity is studied by Monte Carlo simulations. On the basis of these simulations and the diffusion approximation a hybrid approach is designed and used to analyze approaches based on analytic source terms. The influence of boundaries to air is studied. The benefits of increased approximation orders are investigated. It is shown that, even in the presence of strong absorption, the diffusion approach can give satisfactory results if only the source terms are suitably chosen.

Specially formulated to safely remove all contaminants from optical surfaces, First Contact is a proprietary blend of solvents designed to clean first surface mirrors, diffraction gratings, and diffractive optics to the molecular level. First Contact is low-adhesion, leaves no residue, and is carefully designed not to thermally shock or remove coatings – simply apply, dry, and peel to reveal an atomically clean, contaminant-free surface.

Collimated light sources in turbid media are difficult to describe within the diffusion approximation, because they do not meet the requirement of near isotropy. For precise calculation of light intensities close to the source, alternative descriptions of the light source are necessary. In this paper the transition of collimated light into diffusivity is studied by Monte Carlo simulations. On the basis of these simulations and the diffusion approximation a hybrid approach is designed and used to analyze approaches based on analytic source terms. The influence of boundaries to air is studied. The benefits of increased approximation orders are investigated. It is shown that, even in the presence of strong absorption, the diffusion approach can give satisfactory results if only the source terms are suitably chosen.

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