1.8mm Dia, 810nm DWL, 0.0mm WD, NIR Coated, GRIN Lens

Product Details Ideal for Fiber Coupling and Laser Diode Applications Comparable Performance to Conventional Aspherical Singlets Multiple Sizes and Wavelength Options GRIN Lens Grippers and Table Mounts Available Gradient Index (GRIN) Rod Lenses feature plane optical surfaces and achieve focus via a continuous change of the refractive index within the lens material. By eliminating complex geometries (such as aspherical surface figures) and carefully designing the lenses for specific working distances, these microlenses are comparatively easy to handle and integrate into optical systems. Gradient Index (GRIN) Rod Lenses are designed to provide a 0.55 numerical aperture. These Rod Lenses are available for purchase in 2 working distance options: 0 and 0.23 mm. Lenses with a 0mm working distance are ideal for the collimation of single and multi-mode optical fibers and laser diodes because the lens can be positioned and glued directly to the emission source. For focusing applications, or in instances where the lens can’t be in direct contact with the emission source, all lenses are available with a small working distance as well. Each lens is available uncoated (approximately 12% reflection loss), or with a BBAR coating option for R < 0.5%. Specifications General Type: Gradient Index Lens Physical & Mechanical Properties Diameter (mm): 1.80 +0.00/-0.01 Length (mm): 4.36 Length Tolerance (%): ±5 Clear Aperture (%): 90.00 Pitch: 0.25 Optical Properties Effective Focal Length EFL (mm): 1.72 Focal Length Specification Wavelength (nm): 810.00 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Aluminosilicate Glass Embedded with Silver Ions f/#: 0.93 Numerical Aperture NA: 0.52 Index of Refraction (n d ) - Center of Lens: 1.624 Coating: BBAR (800-1000nm) Coating Specification: R avg <0.5%, 0-30° Wavelength Range (nm): 800 - 1000 Working Distance (mm): 0 Working Distance Tolerance (mm): ±0.02 Gradient Constant (mm -1 ): 0.360 Surface Quality: 40-20 Regulatory Compliance RoHS 2015: Compliant × Reach 219: Compliant × Certificate of Conformance: View ×