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584nm Dichroic Glass Mirror
584nm dichroic glass mirror is an optical thin-film filter reflect light below 584nm and transmit light above 584nm. Coligh manufactures dichroic mirrors.
It has key features below:
- Cut on wavelength 584nm
- Above 90% in high transmission band
- Above 98% reflection on shorter wavelength
- Hard coating superior durability
- Fused Silica substrate and Ultra-low autofluorescence
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584nm Dichroic Glass Longpass Mirror Hard-Coated Description
The 584nm dichroic glass mirror is an optical beam-splitting component based on the principle of precise thin-film interference. It is constructed on a fused silica substrate and coated with dozens of nanometer-scale dielectric layers using ion-assisted deposition (IAD).
Its cut-on wavelength is 584nm, meaning it reflects light below 584nm (typically 350–580nm) and transmits light above 584nm (typically 590–800nm). This sharp transition enables high-efficiency spectral separation with minimal crosstalk.
- Using IAD and multilayer dielectric coating technology, the mirror features exceptional durability, long-term environmental stability, and resistance to humidity and thermal cycling.
- The design provides a steep transition between reflection and transmission bands, ensuring accurate and efficient signal discrimination—ideal for demanding applications like fluorescence imaging, flow cytometry, and laser beam control.
- The fused silica substrate offers ultra-low autofluorescence, ensuring the integrity of weak fluorescence signals, and exhibits extremely low thermal wavelength drift, making it suitable for high-precision and thermally sensitive optical systems.
584nm Dichroic Glass Mirror Technical Datasheet
| Parameter | Specification |
| Product Type | Dichroic Optical Filter / Longpass Beamsplitter |
| Cut On Wavelength | 584 nm ± 1 nm |
| Angle of Incidence (AOI) | 45° |
| Reflectance | ≥98% |
| Transmission Range | > 90% average |
| Working Wavelength Rang | 350-800nm |
| Coating Type | Hard-coated dielectric multilayer |
| Substrate Material | Fused Silica |
| Surface Quality | 60/40 or better (per MIL-PRF-13830B) |
| Size Options | 15*11*1.0mm, custom sizes available |
| Clear Aperture | > 90% of dimension |
| Thickness | 1.0 mm ± 0.1 mm |
584nm Dichroic Glass Mirror Applications
- Multi-wavelength Laser Beam Combining System
In RGB laser projection or laser processing, it is necessary to combine 584nm yellow laser with 640nm red and 532nm green lasers. A dichroic mirror efficiently reflects 584nm while transmitting the other wavelengths. The 584nm Dichroic Glass Mirror can reflect 584nm laser and transmit red/green lasers, achieving tricolor white light output. It improves beam combining efficiency and reduces thermal loss. - Laser Fluorescence Excitation
584nm is the excitation peak of the specific fluorescent dye Calcein Violet. In applications requiring precise separation of excitation and emission light, the 584nm dichroic mirror can be placed in the microscope optical path, reflecting the 584nm excitation light to the sample and transmitting >600nm emission fluorescence to the detector. It enhances signal-to-noise ratio and reduces background light interference. - Fully Automated Chemiluminescence Immunoassay Analyzer
Chemiluminescence detection requires separation of the excitation light from the PE-Cy5 signal at 670nm. However, background fluorescence from the blood matrix may interfere. The 584nm dichroic mirror can be integrated into the optical sensor module to reflect 561nm excitation light to the microplate reaction well and transmit >589nm chemiluminescent signal to a high-sensitivity CCD. This improves the signal-to-noise ratio. - Two-Photon Fluorescence Imaging
In neurovascular imaging, the second harmonic of 920nm excitation (460nm) can overwhelm the jRGECO1a calcium signal at 620nm. The 584nm dichroic mirror can be placed in the post-objective optical path to reflect <579nm stray light and transmit >589nm fluorescence to the HyD detector, enhancing deep imaging signal clarity.
