LA4874 In Stock

The LA4874 by ThorLabs is a premium quality plano-convex lens that offers exceptional performance and versatility for a wide range of applications. With a diameter of Ø1", this lens is manufactured using UV-grade fused silica, a material known for its high transmission in the deep UV and minimal laser-induced fluorescence. This makes the LA4874 lens the perfect choice for applications ranging from the UV to the near IR. Compared to its counterpart, N-BK7, UV fused silica offers superior homogeneity and a lower coefficient of thermal expansion. In addition, this lens boasts an Abbe Number of 67.82, which is a crucial indicator of dispersion.

The LA4874 can focus a collimated beam or collimate light from a point source. For optimum results and to reduce the occurrence of spherical aberration, one should use collimated light on the curved surface of the lens while focusing, and a point light source should be incident on the planar surface when aiming for collimation. Furthermore, when image quality is not critical, this plano-convex lens can be used as a substitute for achromatic doublets, which can help to reduce the cost of your optical system. With an uncoated wavelength range of 185 nm - 2.1 μm and a focal length of 150.5 mm, the LA4874 is a versatile and reliable choice for any optical system requiring a plano-convex lens. Additionally, the plano-convex lens is ideal for use in situations where absolute magnification is less than 0.2 or greater than 5, unlike a bi-convex lens.