Thorlabs 索雷博 LA4246-UV-ML 平凸透镜
Thorlabs 索雷博 LA4246-UV-ML 平凸透镜 LA4246-UV-ML - Ø75 mm紫外熔融石英平凸透镜，SM3螺纹安装，f=500.0 mm，增透膜：245-400 nm 平凸透镜，紫外熔融石英，已安装，紫外增透膜 概述 UV Fused Silica Plano-Convex Lenses, UV AR-Coated Lens Shape Plano-Convex Substrate Material UV-Grade Fused Silicaa UV AR Coating Range 245 - 400 nm Reflectance Over CoatingRange (AOI = 0°) Ravg < 0.5% Lens Diameter Ø1/2" in SM05-Threaded Mount(0.535"-40)Ø1" in SM1-Threaded Mount(1.035"-40)Ø2" in SM2-Threaded Mount(2.035"-40)Ø75 mm in SM3-Threaded Mount(3.035"-40) Diameter Tolerance +0.00 mm / -0.10 mm Clear Aperture Ø1/2" Lenses: >Ø11.05 mmØ1" Lenses: >Ø22.86 mmØ2" Lenses: >Ø45.72 mmØ75 mm L...
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LA4246-UV-ML
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Thorlabs 索雷博 LA4246-UV-ML 平凸透镜
LA4246-UV-ML - Ø75 mm紫外熔融石英平凸透镜，SM3螺纹安装，f=500.0 mm，增透膜：245-400 nm
平凸透镜，紫外熔融石英，已安装，紫外增透膜
| UV Fused Silica Plano-Convex Lenses, UV AR-Coated | |
|---|---|
| Lens Shape | Plano-Convex |
| Substrate Material | UV-Grade Fused Silicaa |
| UV AR Coating Range | 245 - 400 nm |
| Reflectance Over Coating Range (AOI = 0°) |
Ravg < 0.5% |
| Lens Diameter | Ø1/2" in SM05-Threaded Mount (0.535"-40) Ø1" in SM1-Threaded Mount (1.035"-40) Ø2" in SM2-Threaded Mount (2.035"-40) Ø75 mm in SM3-Threaded Mount (3.035"-40) |
| Diameter Tolerance | +0.00 mm / -0.10 mm |
| Clear Aperture | Ø1/2" Lenses: >Ø11.05 mm Ø1" Lenses: >Ø22.86 mm Ø2" Lenses: >Ø45.72 mm Ø75 mm Lenses: >Ø67.50 mm |
| Design Wavelength | 546 nmb |
| Index of Refraction (@ 546 nm) |
1.460 |
| Surface Quality | 40-20 Scratch-Dig |
| Damage Thresholdc | 5 J/cm2 (355 nm, 10 ns, 10 Hz, Ø0.350 mm) |
| Surface Flatness (Plano Side) |
λ/2 |
| Spherical Surface Powerd (Convex Side) |
3λ/2 |
| Surface Irregularity (Peak to Valley) |
λ/4 |
| Centration | ≤3 arcmin |
| Focal Length Tolerance | ±1% |
特性
- Ø1/2英寸、Ø1英寸，Ø2英寸和Ø75 mm透镜可选，安装在SM螺纹安装座中
- 紫外增透膜，波长范围245 - 400 nm
- 由紫外级熔融石英制造
- 可提供的焦距：20.0 - 1000.0 mm
- 表面质量：40-20划痕-麻点
这些紫外级熔融石英平凸透镜可选择Ø1/2英寸、Ø1英寸、Ø2英寸和Ø75 mm的尺寸，安装在螺纹外壳内，透镜的两个表面镀245-400 nm紫外增透膜。紫外级熔融石英在深紫外波段具有很高的透过率，并且几乎不产生激光诱导荧光（测量波长193 nm），这使其特别适合应用于紫外到近红外波段。另外，与N-BK7相比，紫外级熔融石英具有更好的均匀性和更低的热膨胀系数。
这些平凸透镜上附加的紫外增透膜在有多个光学元件的应用中是尤其可取的。每个未镀膜的基底表面大约反射4%的入射光，紫外增透膜提高了透过率，这在弱光应用中是尤为重要的，可以防止多重反射的不良影响（如鬼影）。
平凸透镜具有正焦距，是应用最广泛的透镜元件。它们一般用来对准直的入射光进行聚焦；在这种情况下，为了尽量减小球差，准直光束应从透镜的曲面入射。当成像质量不重要时，平凸透镜也可以作为消色差双胶合透镜的替代品。
虽然平凸透镜和双凸透镜都可以对准直光进行会聚，但在选择时，如果想要获得低于0.2或者大于5的绝对放大倍率，通常倾向于选取平凸透镜。当需要的放大率介于0.2和5之间时，使用双凸透镜比较适合。
| UVFS Plano-Convex Lens Selection Guide | |
|---|---|
| Unmounted Lenses | Mounted Lenses |
| Uncoated | Uncoated |
| -UV Coating (245 - 400 nm) | -UV Coating (245 - 400 nm) |
| -A Coating (350 - 700 nm) | -A Coating (350 - 700 nm) |
| -AB Coating (400 - 1100 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) | - |
我们还提供定制镀膜。关于报价请联系技术支持techsupport-cn@thorlabs.com。
| Quick Links to Other Spherical Singlets | ||||||
|---|---|---|---|---|---|---|
| Plano-Convex | Bi-Convex | Best Form | Plano-Concave | Bi-Concave | Positive Meniscus | Negative Meniscus |
平凸透镜，紫外熔融石英，Ø75 mm，已安装，增透膜：245-400 nm
| Item # | Optic Diameter |
Focal Length | Dioptera | Radius of Curvature | Center Thickness | Edge Thicknessb | Back Focal Length | Working Distance | AR Coating | Housing | Reference Drawing |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LA4384-UV-ML | 75.0 mm | 90.0 mm | +11.1 | 41.4 mm | 26.9 mm | 3.0 mm | 71.6 mm | 67.8 mm | 245 - 400 nm | SM3-Threaded Mount |
 |
| LA4372-UV-ML | 75.0 mm | 150.0 mm | +6.7 | 69.0 mm | 14.1 mm | 3.0 mm | 140.4 mm | 136.6 mm | |||
| LA4795-UV-ML | 75.0 mm | 200.0 mm | +5.0 | 92.0 mm | 11.0 mm | 3.0 mm | 192.5 mm | 188.7 mm | |||
| LA4246-UV-ML | 75.0 mm | 500.0 mm | +2.0 | 230.0 mm | 6.1 mm | 3.0 mm | 495.8 mm | 492.0 mm |
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