47-730 25 mm Dia. L-BAL35 Precision Aspheric Lens; EFL=25mm; NA=0.5 Uncoated

The 47-730 is a high-precision aspheric lens, designed and manufactured by Edmund Optics. This lens, with a catalog number 47-730, is a part of their extensive catalog, available for purchase directly from their website. The lens is currently in stock, ready for immediate dispatch.

The lens is constructed from L-BAL35, a material from Ohara, a renowned manufacturer of optical glass. This material is chosen for its excellent optical properties, making it suitable for a wide range of applications.

The lens has a diameter of 25 mm and a numerical aperture (NA) of 0.5. The NA is a measure of the light-gathering ability of the lens, and a value of 0.5 indicates a moderate to high light-gathering ability. This makes the lens suitable for applications that require a moderate to high level of light collection.

The lens has an effective focal length (EFL) of 25 mm. The EFL is the distance from the lens to the point where the light rays converge, and a value of 25 mm indicates a relatively short focal length. This makes the lens suitable for applications that require a wide field of view.

The lens is uncoated. Coatings are often applied to lenses to reduce reflections and improve transmission. However, in some applications, an uncoated lens may be preferred due to its lower cost or specific optical properties.

The lens has a center thickness of 7.5 mm and an edge thickness of 1.74 mm. The center thickness is the distance from one surface of the lens to the opposite surface, measured at the center of the lens. The edge thickness is the distance from one surface of the lens to the opposite surface, measured at the edge of the lens.

The lens has an aspheric surface with a radius of curvature (R1) of 14.728 mm and a conic constant (K1) of -1.439137. The aspheric shape of the lens reduces spherical aberration, improving the image quality.