High Precision Laser Grade Optical Lenses
Featured Product from Hangzhou Shalom Electro-optics Technology Co., Ltd.
- Plano Convex or Plano Concave Lenses made from UV Fused Silica
- Laser Grade High Precision Lenses: λ/10 Irregularities and 10/5 S/D surface qualities
- Material source from Corning UV Grade Fused Silica Glass(Corning HPFS)
- Wavelength range: 200-2200nm
- Standardized focal lengths and diameters convenient for OEM
- Ideal for UV-NIR wavelengths and durable under high temperature
- Coating options: uncoated, V-coating, or Broadband Anti-reflection(BBAR) coatings.
- Applications: detectors, imaging systems, lasers, fiber lasers, etc.
Plano-Convex (PCX) Lens is an optical element with a positive focal length and a flat-spherical surface profile. The lenses are designed for the purpose of light focusing, collection, and collimating. Plano-Concave Lens is a bulk optical singlet with a flat side and a convex side, which contribute to a negative focal length and a negative spherical aberration. Plano concave lens diverges collimated light beams from a virtual focus and therefore could be applied to Galilean beam expanders, also as components to increase the focal length of an optical instrument.
Compared to Biconvex or Biconcave lenses, Plano-Convex or Plano-Concave Lenses have two unidentical sides and therefore work best for infinite conjugate ratios (objective distance: image distance). However, plano-convex or plano-concave lenses still reduce spherical aberrations to a quite low extent when the absolute conjugate ratio is greater than 5:1. For conjugate ratio below 5:1, consider using plano convex/concave lenses in pair or biconvex/biconcave lens.
UV Fused Silica is the amorphous form of Silicon Dioxide. The material features superior transmission in the UV region and could be utilized for wavelengths ranging from Ultraviolet (UV) to Near-infrared (NIR) spectrum. Other than UV transmission, UV grade fused silica glass also excels in terms of low thermal expansion, high optical homogeneities, and the absence of fluorescence under UV radiation. Compared with NBK7, the material is more reliable for high-temperature environments.
Hangzhou Shalom EO offers stocked and custom Plano Convex Lenses and Plano Concave Lenses made from Corning High Purity UV Fused Silica Glass (Corning HPFS Glass), or JGS1 with excellent mechanical, and chemical rigidness(The lenses in the stock list are made from Corning 7980-0F, 7980-1D). These lenses are fabricated with laser-grade high precision with irregularities of λ/10 and surface qualities of 10/5 S/D, which make them capable of coping with high-end contexts for various incorporations into detectors, imaging instruments, lasers, fiber lasers, etc. The focal lengths of the stocked UV Fused Silica plano-convex lenses range from 20-1000mm, while other focal lengths could be customized. Each piece of the lens will undergo strict inspection in Shalom EO’s in-house labs before dispatch, to assure tight tolerance and secure your interest.
To further enhance the transmission rate of the UVFS plano-convex lenses and plano-concave lenses, Broadband Anti-reflection (BBAR) coatings could be furnished to accommodate the requirements for multi-wavelength and tunable lasers. V coatings, which are a special form of AR coatings that deliver an ultra-low reflection at a narrow band of designed wavelengths are available, too. These coated lenses are in particular advantageous for elevating the efficiencies of complex optical instruments. Besides, Uncoated UV Fused Silica plano convex lenses are also accessible in Shalom EO.
1. For Plano-Convex Lenses, to minimize spherical aberration, engineers from Shalom EO suggest that collimated light beams should be projected to the curved side of the lens for focusing.
2. For Plano-Concave Lenses, The curved surface should face the light source (Or in other words, the flat side should point to the focal plane you intend to modulate).
3. Simplified Calculation of Focal Length of a Plano Convex Lens: focal length = R/(n-1), where R is the radius of curvature and n is the refractive index.