Dichroic mirrors are angle-dependent
Dichroic performance changes with angle of incidence and polarization. Confirm AOI before comparing cut-on or reflection bands.
Dichroic Mirrors and Beamsplitters for Fluorescence
Compare dichroic mirrors by transition wavelength, reflection band, transmission band, AOI, and substrate size. These components are used to separate or combine channels in fluorescence and laser systems.
How to Choose
Confirm the angle of incidence first, usually 45 degrees for many beamsplitter layouts. Then match the reflection and transmission bands to excitation and emission paths, and check polarization, substrate thickness, and coating side orientation.
11
Dichroic Mirrors
These dichroic mirrors (beamsplitters) are designed for a 45° angle of incidence and separate light by wavelength. They are suited to fluorescence microscopy, laser beam combining, multi-channel imaging, and projector applications. Longpass-type dichroics transmit longer wavelengths and reflect shorter ones.
View full Dichroic Mirror Category
PCR-Compatible Dichroic Mirror Models
The latest reviewed PCR-compatible set contains fifteen LP/SP models with four dimensional variants per model. General catalog records are retained in a separate table where the latest PCR source does not confirm an equivalent.
| Model | Type | Dye Channel | AOI | Transmission Range (nm) | Reflection Range (nm) | Transmittance | Reflectivity | Formats |
|---|---|---|---|---|---|---|---|---|
| STO-DM500SP | SP | FAM/SYBR Green | 45° | 440-485 | 515-700 | Tave≥95.1% | T≥95.1% | |
| STO-DM450LP | LP | Atto 425 | 45° | 465-680 | 380-445 | Tave≥95.1% | T≥95.1% | |
| STO-DM550SP | SP | HEX/VIC/JOE | 45° | 480-530 | 565-700 | Tave≥95.1% | T≥95.1% | |
| STO-DM565SP | SP | CY3/TAMRA | 45° | 480-550 | 580-700 | Tave≥95.1% | T≥95.1% | |
| STO-DM600SP | SP | ROX/Texas Red | 45° | 480-580 | 620-700 | Tave≥95.1% | T≥95.1% | |
| STO-DM650SP | SP | CY5/Qusar 670 | 45° | 480-635 | 670-800 | Tave≥95.1% | T≥95.1% | |
| STO-DM690SP | SP | CY5.5/Qusar 705 | 45° | 480-675 | 715-800 | Tave≥95.1% | T≥95.1% | |
| STO-DM505LP | LP | FAM/SYBR Green | 45° | 515-700 | 450-490 | Tave≥95.1% | T≥95.1% | |
| STO-DM550LP | LP | HEX/VIC/JOE | 45° | 560-700 | 450-538 | Tave≥95.1% | T≥95.1% | |
| STO-DM565LP | LP | CY3/TAMRA | 45° | 575-700 | 450-555 | Tave≥95.1% | T≥95.1% | |
| STO-DM590LP | LP | ROX/Texas Red | 45° | 605-700 | 450-580 | Tave≥95.1% | T≥95.1% | |
| STO-DM635LP | LP | Atto 633 | 45° | 650-700 | 450-630 | Tave≥95.1% | T≥95.1% | |
| STO-DM650LP | LP | CY5/Qusar 670 | 45° | 670-700 | 450-645 | Tave≥95.1% | T≥95.1% | |
| STO-DM700LP | LP | CY5.5/Qusar 705 | 45° | 715-800 | 450-685 | Tave≥95.1% | T≥95.1% | |
| STO-DM770LP | LP | CY7 | 45° | 780-900 | 600-755 | Tave≥95.1% | T≥95.1% |
Dichroic Mechanical Formats
LP and SP formats remain separate where the reviewed substrate thickness differs. Search size, shape, mounting, clear aperture, or substrate here without repeating the same details in every product row.
| Format Family | Standard Format | Shape | Mounting | Clear Aperture | Retainer Tolerance | Size Tolerance | Substrate | Applies To |
|---|---|---|---|---|---|---|---|---|
| 1 format variants · Rectangular · unmounted · 1.0 mm substrate | 10mm × 15mm, unmounted | Rectangular | unmounted | Not specified | Not specified | +0.0/-0.1 mm | 1.0 mm (±0.1 mm) | 9 PCR dichroic models |
| 1 format variants · Rectangular · unmounted · 1.0 mm substrate | 6mm × 9mm, unmounted | Rectangular | unmounted | Not specified | Not specified | +0.0/-0.1 mm | 1.0 mm (±0.1 mm) | 9 PCR dichroic models |
| 1 format variants · Rectangular · unmounted · 1.0 mm substrate | 8mm × 12mm, unmounted | Rectangular | unmounted | Not specified | Not specified | +0.0/-0.1 mm | 1.0 mm (±0.1 mm) | 9 PCR dichroic models |
| 1 format variants · Rectangular · unmounted · 1.0 mm substrate | 17.5mm × 12.5mm, unmounted | Rectangular | unmounted | Not specified | Not specified | +0.0/-0.1 mm | 1.0 mm (±0.1 mm) | 9 PCR dichroic models |
| 1 format variants · Rectangular · unmounted · 1.1 mm substrate | 10mm × 15mm, unmounted | Rectangular | unmounted | Not specified | Not specified | +0.0/-0.1 mm | 1.1 mm (±0.1 mm) | 6 PCR dichroic models |
| 1 format variants · Rectangular · unmounted · 1.1 mm substrate | 17.5mm × 12.5mm, unmounted | Rectangular | unmounted | Not specified | Not specified | +0.0/-0.1 mm | 1.1 mm (±0.1 mm) | 6 PCR dichroic models |
| 1 format variants · Rectangular · unmounted · 1.1 mm substrate | 6mm × 9mm, unmounted | Rectangular | unmounted | Not specified | Not specified | +0.0/-0.1 mm | 1.1 mm (±0.1 mm) | 6 PCR dichroic models |
| 1 format variants · Rectangular · unmounted · 1.1 mm substrate | 8mm × 12mm, unmounted | Rectangular | unmounted | Not specified | Not specified | +0.0/-0.1 mm | 1.1 mm (±0.1 mm) | 6 PCR dichroic models |
General Dichroic Mirror Models
These existing general-catalog records are retained for continuity. They are not labeled as part of the latest PCR-compatible source.
| Model | Type | Dye Channel | AOI | Transmission Range (nm) | Reflection Range (nm) | Transmittance | Reflectivity | Formats |
|---|---|---|---|---|---|---|---|---|
| DM600 | General | Not specified | 45 | 622-700 | 450-590 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM647 | General | Not specified | 45 | 665-700 | 450-640 | Tave≥95% | R≥98% | Not specified in existing general record |
| Reflect visible spectrum IR transmitting | General | Not specified | 45 | 850-1100 | 400-780 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM450 | General | Not specified | 45 | 465-680 | 380-445 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM505 | General | Not specified | 45 | 515-700 | 450-490 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM550 | General | Not specified | 45 | 560-700 | 450-540 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM565 | General | Not specified | 45 | 575-700 | 450-555 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM590 | General | Not specified | 45 | 603-700 | 450-580 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM635 | General | Not specified | 45 | 650-700 | 450-630 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM700 | General | Not specified | 45 | 715-800 | 450-685 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM770 | General | Not specified | 45 | 780-900 | 600-755 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM500(SP) | General | Not specified | 45 | 440-485 | 515-700 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM550(SP) | General | Not specified | 45 | 480-530 | 565-700 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM565(SP) | General | Not specified | 45 | 480-550 | 580-700 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM600(SP) | General | Not specified | 45 | 480-580 | 620-700 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM650(SP) | General | Not specified | 45 | 480-635 | 670-800 | Tave≥95% | R≥98% | Not specified in existing general record |
| DM690(SP) | General | Not specified | 45 | 480-675 | 710-800 | Tave≥95% | R≥98% | Not specified in existing general record |
Related Engineering Notes
Reflection and transmission bands
A useful dichroic choice must satisfy both sides of the split: high reflection for one band and high transmission for the other.
Use in fluorescence systems
For fluorescence, match the dichroic edge to excitation and emission filters as a set, not as an isolated mirror.
FAQ
What does a dichroic mirror do?
It reflects one wavelength range and transmits another, allowing optical systems to split or combine channels by wavelength.
Why is angle of incidence important?
The transition edge shifts with angle and polarization, so the specified AOI must match the instrument design.
Can dichroic mirrors be customized?
Yes. Custom transition wavelengths, reflection/transmission bands, substrate sizes, and AOI targets can be specified.
Quality & Compliance
Documentation-ready optical filter supply
For OEM programs, laboratory instruments, and industrial systems, OPTOStokes keeps quality, material compliance, and engineering support visible from the start of supplier evaluation.
Quality system
ISO 9001 managed production
Process control, inspection records, and repeatable coating workflows for production optical components.
Material compliance
RoHS / REACH support
Compliance documentation can be prepared for qualified projects and regulated supply chains.
Factory-direct
Custom coating and dimensions
Wavelength, FWHM, substrate, AOI, size, and mounting requirements can be reviewed with engineering.
Procurement ready
Quote and data review
Share target wavelength, blocking level, transmittance, and drawing requirements for a focused quote.
Ready to Find Your Filter?
Our engineers will help you select the perfect optical solution.