Koster Prism,Parallel Splitting Prism and Beam-Splitting Prism. Beamsplitters are optical components used to split input light into two separate parts. Beamsplitters are common components in laser or illumination systems.
Koster Prism
This special Beam Splitter is made of two special designed prisms. The cemented surface of one prism is beam splitter coating. The Prism enables splitting beam of light per two beams parallel to each other, and parallel to the input beam with high accurate. The distance between two output beams can be different for different prism size, but, shall be at least 4 times of beam size. The two-split beams have the same optical path.
This special Beam Splitter is made of two special designed prisms. The cemented surface of one prism is beam splitter coating. The Prism enables splitting beam of light per two beams parallel to each other, and parallel to the input beam with high accurate. The distance between two output beams can be different for different prism size, but, shall be at least 4 times of beam size. The two-split beams have the same optical path.
This special prism consists of one Right Angle prism and one Rhomboid Prism. The hypotenuse surface of the Right Angle Prism is beam-splitting coated and cemented to the Rhomboid Prism. The two split output beams are parallel to each other, and perpendicular to the input beam at high accurate. Distance of two-output beam can be different by changing the length of the rhomboid prism. The optical path of the two-split beams is different.Standard Specifications:
| Attribute | Specification |
| Material | On request, for example, N-BK7, Fused Silica, MgF2, N-SF10 |
| Range of Size | (2×2)mm ~ (50×50) mm |
| Dimension Tolerance | +/-0.1 mm |
| Clear Aperture | >90% |
| Angle Accuracy | +/-30 arc sec |
| Beam Deviation Tolerance | +/- 1 arc min |
| Flatness @633 nm | <λ/2 |
| Surface Quality | 60/40 Scratch/Dig |
| Spectral Range | 100-2500nm |
| Splitting Ratio R: T (%) | 10:90 to 90:10 |
| AR Coating on input/output surfaces | On request |
Note: According to Customer’s requirement, we can make non-standard Beam Splitting Prisms with significantly higher optical parameters: 20/10, 10, beam divergence up to +/-15 arc sec. Prism in mountings is also available.
Beamsplitters are optical components used to split input light into two separate parts. Beamsplitters are common components in laser or illumination systems. Beamsplitters are also ideal for fluorescence applications, optical interferometry, or life science or semiconductor instrumentation. Light can be split by percentage of overall intensity, wavelength, or polarization state.