Patent ID: 8187542

Claim:
An optical detection field, comprising: a reaction region, of a plurality of reaction regions, wherein, the reaction region is configured to facilitate a fluorsecent reaction of at least one substance, a diamond-like carbon thin film containing therein fluorine is formed on a surface of the reaction region, such that the film is between the surface of the reaction region and the substance, the film has a transmittance of visibile light of 10% or less, the film contains therein flourine in atom ratio (F/(F+C+H)) of 0 to 40%, the film has a hybrid ratio of SP 2 /SP 3 set in the range of 0.5 to 1.1, and the film has a thickness set in the range of 1 to 1,000 nm, and the reaction region is adjacent to a cover that is opposite the film, such that the substance is between the thin film and the cover, and the cover is optically transparent over the range of wavelengths that the reaction fluoresces.