UV Fused Silica Plano-Convex Lenses, Uncoated
- UV-Grade Fused Silica
- Broadband AR Coating Available
- Near Best Form for Infinite Conjugate Applications
- Wavelength Range: 185 nm - 2.1 µm
- Zemax Files Available
|Available Diameters||2 mm and 3 mm||5 mm, 6 mm, 1/2",
1", 2", and 3"
|Substrate Material||UV-Grade Fused Silicaa|
|Wavelength Range||185 nm - 2.1 μm|
|Design Wavelength||587.6 nm|
|Index of Refraction||1.460 @ 588 nm|
|Spherical Surface Power
(Peak to Valley)
|Diameter Tolerance||+0.00 / -0.02 mm||+0.00 mm / -0.10 mm|
|Thickness Tolerance||±0.03 mm||±0.1 mm|
|Surface Quality||60-40 Scratch-Dig||40-20 Scratch-Dig|
|Centration||≤5 arcmin||<3 arcmin|
|Abbe Number||vd = 67.82|
|Clear Aperture||>90% of Diameter|
|Focal Length Tolerance||±1%|
|Click on the red Document icon next to the item numbers below to access the Zemax file download. Our entire Zemax Catalog is also available.|
- Material: UV-Grade Fused Silica
- Wavelength Range: 185 nm - 2.1 μm (Uncoated)
- Focal Lengths Available from 4 - 1000 mm
These uncoated UV-Grade Fused Silica Plano-Convex lenses are available in sizes ranging from Ø2 mm to Ø75 mm. UV-grade fused silica offers high transmission in the deep UV and exhibits virtually no laser-induced fluorescence (as measured at 193 nm), making it an ideal choice for applications from the UV to the near IR. In addition, UV fused silica has better homogeneity and a lower coefficient of thermal expansion than N-BK7.
Plano-convex lenses can focus a collimated beam or collimate light from a point source. To minimize the introduction of spherical aberration, a collimated light source should be incident on the curved surface of the lens when being focused and a point light source should be incident on the planar surface when being collimated. When image quality is not critical, plano-convex lenses can also be used as a substitute for achromatic doublets.
The focal length of each lens can be calculated using a simplified thick lens equation:
f = R/(n-1),
where n is the index of refraction and R is the radius of curvature of the lens surface. These lenses are fabricated from UV-Grade Fused Silica, which has an Abbe Number of 67.82; this value is an indicator of the dispersion.
When deciding between a plano-convex lens and a bi-convex lens, both of which cause collimated incident light to converge, it is usually preferable to choose a plano-convex lens if the desired absolute magnification is either less than 0.2 or greater than 5. Between these two values, bi-convex lenses are generally preferred.
Thorlabs offers fixed lens mounts that can be used for mounting the lenses sold here. For mounting high-curvature lenses in select sizes, extra-thick retaining rings with SM05 (0.535"-40), SM1 (1.035"-40), or SM2 (2.035"-40) threading are available that provide extra clearance for spanner wrenches (see the Mounting Options tab for more information).
UV Fused Silica lens kits are also available. Please click here for information.
|UVFS Plano-Convex Lens Selection Guide|
|Unmounted Lenses||Mounted Lenses|
|-UV Coating (245 - 400 nm)||-UV Coating (245 - 400 nm)|
|-A Coating (350 - 700 nm)||-A Coating (350 - 700 nm)|
|-B Coating (650 - 1050 nm)||-B Coating (650 - 1050 nm)|
|-C Coating (1050 - 1700 nm)||-C Coating (1050 - 1700 nm)|
|-YAG V-Coating (532/1064 nm)||-YAG V-Coating (532/1064 nm)|
|-405 V-Coating (405 nm)||-|
|-532 V-Coating (532 nm)||-|
|-633 V-Coating (633 nm)||-|
|-1064 V-Coating (1064 nm)||-|
|-1550 V-Coating (1550 nm)||-|
|Quick Links to Other Spherical Singlets|
|Plano-Convex||Bi-Convex||Best Form||Plano-Concave||Bi-Concave||Positive Meniscus||Negative Meniscus|
Below is the transmission curve for a 10 mm thick uncoated sample of UV fused silica when the incident light is normal to the surface. Please note that this is the measured transmission, including surface reflections.
Other AR Coatings:
Thorlabs offers V-coatings centered at various wavelengths and broadband AR coatings for the UV, visible, or NIR (shown below). Click here to view all coating options for UV-grade fused silica plano-convex lenses.
|Recommended Mounting Options for Thorlabs Lenses|
|Item #||Mounts for Ø2 mm to Ø10 mm Optics|
|(Various)||Fixed Lens Mounts and Mini-Series Fixed Lens Mounts for Small Optics, Ø5 mm to Ø10 mm|
|(Various)||Small Optic Adapters for Use with Standard Fixed Lens Mounts, Ø2 mm to Ø10 mm|
|Item #||Mounts for Ø1/2" (Ø12.7 mm) Optics|
|LMR05||LMR05/M||Fixed Lens Mount for Ø1/2" Optics|
|MLH05||MLH05/M||Mini-Series Fixed Lens Mount for Ø1/2" Optics|
|LM05XY||LM05XY/M||Translating Lens Mount for Ø1/2" Optics|
|SCP05||16 mm Cage System, XY Translation Mount for Ø1/2" Optics|
|(Various)||Ø1/2" Lens Tubes,
Optional SM05RRC Retaining Ring for High-Curvature Lenses (See Below)
|Item #||Mounts for Ø1" (Ø25.4 mm) Optics|
|LMR1||LMR1/M||Fixed Lens Mount for Ø1" Optics|
|LM1XY||LM1XY/M||Translating Lens Mount for Ø1" Optics|
|ST1XY-S||ST1XY-S/M||Translating Lens Mount with Micrometer Drives (Other Drives Available)
|CXY1||30 mm Cage System, XY Translation Mount for Ø1" Optics|
|(Various)||Ø1" Lens Tubes,
Optional SM1RRC Retaining Ring for High-Curvature Lenses (See Below)
|Item #||Mount for Ø1.5" Optics|
|LMR1.5||LMR1.5/M||Fixed Lens Mount for Ø1.5" Optics|
|(Various)||Ø1.5" Lens Tubes,
Optional SM1.5RR Retaining Ring for Ø1.5" Lens Tubes and Mounts
|Item #||Mounts for Ø2" (Ø50.8 mm) Optics|
|LMR2||LMR2/M||Fixed Lens Mount for Ø2" Optics|
|LM2XY||LM2XY/M||Translating Lens Mount for Ø2" Optics|
|CXY2||60 mm Cage System, XY Translation Mount for Ø2" Optics
|(Various)||Ø2" Lens Tubes,
Optional SM2RRC Retaining Ring for High-Curvature Lenses (See Below)
|Item #||Adjustable Optic Mounts|
|LH1||LH1/M||Adjustable Mount for Ø0.28" (Ø7.1 mm) to Ø1.80" (Ø45.7 mm) Optics|
|LH2||LH2/M||Adjustable Mount for Ø0.77" (Ø19.6 mm) to Ø2.28" (Ø57.9 mm) Optics|
|VG100||VG100/M||Adjustable Clamp for Ø0.5" (Ø13 mm) to Ø3.5" (Ø89 mm) Optics|
|SCL03||SCL03/M||Self-Centering Mount for Ø0.15" (Ø3.8 mm) to Ø1.77" (Ø45.0 mm) Optics|
|SCL04||SCL04/M||Self-Centering Mount for Ø0.15" (Ø3.8 mm) to Ø3.00" (Ø76.2 mm) Optics|
|LH160C||LH160C/M||Adjustable Mount for 60 mm Cage Systems,
Ø0.50" (Ø13 mm) to Ø2.00" (Ø50.8 mm) Optics
|SCL60C||SCL60C/M||Self-Centering Mount for 60 mm Cage Systems,
Ø0.15" (Ø3.8 mm) to Ø1.77" (Ø45.0 mm) Optics
Mounting High-Curvature Optics
Thorlabs' retaining rings are used to secure unmounted optics within lens tubes or optic mounts. These rings are secured in position using a compatible spanner wrench. For flat or low-curvature optics, standard retaining rings manufactured from anodized aluminum are available from Ø5 mm to Ø4". For high-curvature optics, extra-thick retaining rings are available in Ø1/2", Ø1", and Ø2" sizes.
Extra-thick retaining rings offer several features that aid in mounting high-curvature optics such as aspheric lenses, short-focal-length plano-convex lenses, and condenser lenses. As shown in the animation to the right, the guide flange of the spanner wrench will collide with the surface of high-curvature lenses when using a standard retaining ring, potentially scratching the optic. This contact also creates a gap between the spanner wrench and retaining ring, preventing the ring from tightening correctly. Extra-thick retaining rings provide the necessary clearance for the spanner wrench to secure the lens without coming into contact with the optic surface.