镀铝点阵分光片(Polka Dot Beamsplitter)是一种采用金属微图案实现光束分离的宽带分光元件。与传统介质膜分光片不同,它通过基底表面规则排列的铝膜点阵,将入射光分为反射光和透射光两部分。该类分光片具有工作波长范围宽、分光性能对入射角度及偏振状态相对不敏感等特点,适用于宽光谱光学系统及多种光电检测应用。
图知光学提供的镀铝点阵分光片采用高品质紫外熔融石英(UV Fused Silica)作为基底,在其表面制备规则分布的铝膜微结构。每个镀铝单元为0.1 mm × 0.1 mm的微小方块,通过精密排列形成均匀的金属点阵结构。紫外熔融石英基底具有良好的紫外透过性能、较低的热膨胀系数和优异的光学均匀性,能够满足紫外、可见及近红外等不同波段的应用需求。
其工作原理是:入射光照射到镀铝区域时,部分光被金属铝膜反射,形成反射光束;照射到未镀膜区域的光则透过石英基底,形成透射光束。通过控制铝膜的面积覆盖率,可以实现不同的反射与透射光功率分配比例。
与传统介质膜分光片相比,镀铝点阵分光片主要依靠金属反射和空间面积分配实现分光,因此在较宽波长范围内能够保持相对稳定的分光特性,并降低入射角度和偏振状态变化对分光比的影响。
使用注意事项
镀铝点阵分光片的实际分光比不仅与铝膜覆盖率有关,还受到工作波长、入射角度、铝膜反射率及基底透过率等因素影响。 因此,铝膜面积覆盖率不一定等于实际反射率,选型时应以对应波段的实测或标称光谱数据为准。此外,由于采用离散点阵结构,当入射光斑尺寸接近单个铝膜单元或点阵周期时,可能出现分光不均匀、衍射或空间光强调制等现象。建议使入射光斑覆盖足够数量的点阵单元,以获得更稳定的整体分光效果。
对于高功率激光、严格波前要求或高精度分光比应用,应进一步确认产品的激光损伤阈值、光束质量及相关光学性能。
* 如无特殊备注,单位默认为mm
| Material: UV grade Fused Silica | Surface Quality: 80/50 |
| Clear aperture: 85% | Dimension Tolerance: +0/-0.5 mm |
| Thickness: 1±0.2 mm | R/T: ±5%@250~2000 nm |
| Coating: Dot array | Min. beam diameter: >2 mm |
| Spherical Surface Irregularity: λ/2(per inch)@632.8 nm | |
| 展开 | No. | Size(mm) | Thickness(mm) | Split Ratio | Min. Beam Diameter | Spherical Surface Irregularity | Unit Price | 货期 | 购物车 |
|---|---|---|---|---|---|---|---|---|---|
| φ12.7 | 1.0mm(ref) | 30R/70T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥531.25 | 3-4天 | |||
|
No.:
镀铝点阵分光片-01
Size(mm):
φ12.7
Thickness(mm):
1.0mm(ref)
Split Ratio:
30R/70T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥531.25
货期:
3-4天
|
|||||||||
| 12.7x12.7 | 1.0mm(ref) | 30R/70T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥531.25 | 3-4天 | |||
|
No.:
镀铝点阵分光片-02
Size(mm):
12.7x12.7
Thickness(mm):
1.0mm(ref)
Split Ratio:
30R/70T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥531.25
货期:
3-4天
|
|||||||||
| φ25.4 | 1.0mm(ref) | 30R/70T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥687.50 | 3-4天 | |||
|
No.:
镀铝点阵分光片-03
Size(mm):
φ25.4
Thickness(mm):
1.0mm(ref)
Split Ratio:
30R/70T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥687.50
货期:
3-4天
|
|||||||||
| 25.4x25.4 | 1.0mm(ref) | 30R/70T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥687.50 | 3-4天 | |||
|
No.:
镀铝点阵分光片-04
Size(mm):
25.4x25.4
Thickness(mm):
1.0mm(ref)
Split Ratio:
30R/70T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥687.50
货期:
3-4天
|
|||||||||
| φ50.8 | 1.0mm(ref) | 30R/70T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥2468.75 | 3-4天 | |||
|
No.:
镀铝点阵分光片-05
Size(mm):
φ50.8
Thickness(mm):
1.0mm(ref)
Split Ratio:
30R/70T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥2468.75
货期:
3-4天
|
|||||||||
| 50.8x50.8 | 1.0mm(ref) | 30R/70T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥2468.75 | 3-4天 | |||
|
No.:
镀铝点阵分光片-06
Size(mm):
50.8x50.8
Thickness(mm):
1.0mm(ref)
Split Ratio:
30R/70T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥2468.75
货期:
3-4天
|
|||||||||
| φ12.7 | 1.0mm(ref) | 50R/50T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥531.25 | 3-4天 | |||
|
No.:
镀铝点阵分光片-07
Size(mm):
φ12.7
Thickness(mm):
1.0mm(ref)
Split Ratio:
50R/50T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥531.25
货期:
3-4天
|
|||||||||
| 12.7x12.7 | 1.0mm(ref) | 50R/50T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥531.25 | 3-4天 | |||
|
No.:
镀铝点阵分光片-08
Size(mm):
12.7x12.7
Thickness(mm):
1.0mm(ref)
Split Ratio:
50R/50T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥531.25
货期:
3-4天
|
|||||||||
| φ25.4 | 1.0mm(ref) | 50R/50T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥687.50 | 3-4天 | |||
|
No.:
镀铝点阵分光片-09
Size(mm):
φ25.4
Thickness(mm):
1.0mm(ref)
Split Ratio:
50R/50T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥687.50
货期:
3-4天
|
|||||||||
| 25.4x25.4 | 1.0mm(ref) | 50R/50T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥687.50 | 3-4天 | |||
|
No.:
镀铝点阵分光片-10
Size(mm):
25.4x25.4
Thickness(mm):
1.0mm(ref)
Split Ratio:
50R/50T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥687.50
货期:
3-4天
|
|||||||||
| φ50.8 | 1.0mm(ref) | 50R/50T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥2468.75 | 3-4天 | |||
|
No.:
镀铝点阵分光片-11
Size(mm):
φ50.8
Thickness(mm):
1.0mm(ref)
Split Ratio:
50R/50T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥2468.75
货期:
3-4天
|
|||||||||
| 50.8x50.8 | 1.0mm(ref) | 50R/50T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥2468.75 | 3-4天 | |||
|
No.:
镀铝点阵分光片-12
Size(mm):
50.8x50.8
Thickness(mm):
1.0mm(ref)
Split Ratio:
50R/50T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥2468.75
货期:
3-4天
|
|||||||||
| φ12.7 | 1.0mm(ref) | 70R/30T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥531.25 | 3-4天 | |||
|
No.:
镀铝点阵分光片-13
Size(mm):
φ12.7
Thickness(mm):
1.0mm(ref)
Split Ratio:
70R/30T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥531.25
货期:
3-4天
|
|||||||||
| 12.7x12.7 | 1.0mm(ref) | 70R/30T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥531.25 | 3-4天 | |||
|
No.:
镀铝点阵分光片-14
Size(mm):
12.7x12.7
Thickness(mm):
1.0mm(ref)
Split Ratio:
70R/30T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥531.25
货期:
3-4天
|
|||||||||
| φ25.4 | 1.0mm(ref) | 70R/30T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥687.50 | 3-4天 | |||
|
No.:
镀铝点阵分光片-15
Size(mm):
φ25.4
Thickness(mm):
1.0mm(ref)
Split Ratio:
70R/30T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥687.50
货期:
3-4天
|
|||||||||
| 25.4x25.4 | 1.0mm(ref) | 70R/30T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥687.50 | 3-4天 | |||
|
No.:
镀铝点阵分光片-16
Size(mm):
25.4x25.4
Thickness(mm):
1.0mm(ref)
Split Ratio:
70R/30T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥687.50
货期:
3-4天
|
|||||||||
| φ50.8 | 1.0mm(ref) | 70R/30T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥2468.75 | 3-4天 | |||
|
No.:
镀铝点阵分光片-17
Size(mm):
φ50.8
Thickness(mm):
1.0mm(ref)
Split Ratio:
70R/30T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥2468.75
货期:
3-4天
|
|||||||||
| 50.8x50.8 | 1.0mm(ref) | 70R/30T ±5%@250~2000nm | >2mm | λ/2(per inch)@632.8nm | ¥2468.75 | 3-4天 | |||
|
No.:
镀铝点阵分光片-18
Size(mm):
50.8x50.8
Thickness(mm):
1.0mm(ref)
Split Ratio:
70R/30T ±5%@250~2000nm
Min. Beam Diameter:
>2mm
Spherical Surface Irregularity:
λ/2(per inch)@632.8nm
Unit Price:
¥2468.75
货期:
3-4天
|
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