• Ø25.4 mm Plano-Convex Spherical Singlet Lenses
• Material: N-BK7 (Abbe Number: 64.17)
• AR V-Coat: 633 nm
• Focal Length: 150 mm
• Surface Quality: 20-10 Scratch-Dig

The LA1433-633 Plano-Convex Lens is fabricated from N-BK7 glass and features a laser line V-coat at 633 nm for use with high-power HeNe lasers. V-coating is a multilayer, antireflective, dielectric, thin-film coating that achieves a theoretical minimum reflectance over a narrow band of wavelengths. N-BK7 is typically chosen whenever the additional benefits of UV fused silica (i.e., good transmission further into the UV and a lower coefficient of thermal expansion) are not necessary.

The LA1433-633 plano-convex lens has a positive focal length (150 mm) and near-best-form shape for infinite and finite conjugate applications. Plano-convex lenses can be used to focus a collimated beam that is incident on the curved surface of the lens (to minimize spherical aberrations). If the desired absolute magnification is either less than 0.2 or greater than 5.0, it is usually preferable to use a plano-convex lens (rather than a bi-convex lens which also causes collimated incident light to converge). Also, when image quality is not critical, plano-convex lenses can also be used as an economical substitute for achromatic doublets.

• Design Wavelength: 587.6 nm
• Index of Refraction at 633 nm: 1.515
• Damage Threshold: 10 J/cm² (1064nm, 10 ns, 10 Hz, Ø1.040 mm)
• Surface Flatness (Plano Side): λ/2
• Spherical Surface Power (Convex side): 3λ/2
• Surface Irregularity: λ/4
• Centration: =3 arcmin
• Clear Aperture: > 90% of Diameter
• Focal Length Tolerance: ±1%
• Diameter: 25.4 mm
• f: 150 mm
• R: 77.3 mm
• tc: 3.1 mm
• te: 2 mm
• fb: 148 mm
• Suggested Fixed Lens Mount: LMR1