The 63-754 is a 0.40 mm diameter sapphire half-ball lens, uncoated, sourced from the reputable optical vendor, Edmund Optics. This lens is a part of their extensive catalog and is available for immediate purchase, as indicated by its "weblink status" of "Valid - in stock".
The lens is of the "Half Ball Lens" subtype, with a base shape of "Circular". Its geometry includes a diameter of 0.40 mm, a thickness of 0.20 mm, and an inner radius of 0.20 mm. The outer radius is not specified, which suggests that it may not be relevant to the lens's functionality or that it is of negligible value.
The lens is made of Sapphire, specifically identified as "al2o3 mal-1972-n-o" in the Material ID field. Sapphire is a highly durable material, known for its scratch resistance and high thermal conductivity. It is often used in high-performance applications where durability and heat resistance are critical.
The lens is designed to operate at a wavelength of 587.6 nm, which is in the visible light spectrum. This wavelength corresponds to the color yellow and suggests that this lens may be used in applications where yellow light manipulation is required.
Notably, the lens is uncoated. Coatings are often applied to lenses to enhance their performance or protect them from environmental factors. The absence of a coating may indicate that this lens does not require additional protection or enhancement, or it may be intended for applications where coatings are not desirable.