Products Home / Optical Elements / Optical Mirrors / Concave Mirrors / Concave Mirrors: Visible Dielectric Coating (400 - 750 nm)Concave Mirrors: Visible Dielectric Coating (400 - 750 nm)
- Focal Lengths from 12 - 1000 mm
- Ø1/2", Ø1", Ø2", or Ø75 mm
- Dielectric Coating for 400 - 750 nm
- No Chromatic Aberration
CM750-150-E02
Ø75 mm
CM508-150-E02
Ø2"
CM254-100-E02
Ø1"
CM127-050-E02
Ø1/2"
Focus Polychromatic
Beams without
Chromatic Aberration
Please Wait
| Common Specifications | |
|---|---|
| Avaliable Diameters | 1/2", 1", 2", and 75 mm |
| Dielectric Coating Range | 400 - 750 nm; Ravg >99% |
| Clear Aperture | >90% of Diameter |
| Surface Quality | 20-10 Scratch-Dig |
| Diameter Tolerance | +0.0 / -0.2 mm |
| Substrate | N-BK7a |
| Backside Surface | Fine Ground and Engraved with Part Number (Not Polished) |
| Dielectric Concave Mirrors Selection Guide | |||
|---|---|---|---|
| UV | 350 - 400 nm | ||
| Visible | 400 - 750 nm | 400 - 750 nm, Back Side Polished | |
| NIR | 750 - 1100 nm | 750 - 1100 nm, Back Side Polished | |
| Telecom | 1280 - 1600 nm | ||
See the Concave Mirror Guide tab, above, for our complete selection of concave mirrors.
Features
- Dielectric Coating Range: 400 - 750 nm (-E02)
- Greater than 99% Average Reflectivity in Dielectric Coating Range
- Four Diameter Options: 1/2", 1", 2", or 75 mm
- Focal Lengths Range from 12 mm - 1000 mm
Thorlabs' Broadband Dielectric Concave Mirrors are designed for a wide variety of light collection, imaging, and focusing applications. These reflective optics focus light without chromatic aberration, making them especially suitable for broadband sources. With low surface irregularity at 633 nm, these mirrors provide excellent image quality.
All of the mirrors on this page can be mounted by our Precision Kinematic Mirror Mounts.
Thorlabs also offers metallic concave mirrors that operate over a broader wavelength range at the expense of lower reflectivity. Please contact Tech Support for custom versions of these optics.
These plots show the reflectivity of our -E02 dielectric coating for a typical coating run. The shaded region in each graph denotes the spectral range over which the coating is highly reflective. Due to variations in each run, this recommended spectral range is narrower than the actual range over which the optic will be highly reflective. If you have any concerns about the interpretation of this data, please contact Tech Support. For applications that require a mirror that bridges the spectral range between two dielectric coatings, please consider a metallic concave mirror.
Excel Spreadsheet with Raw Data for -E02 Coating, 8° and 45° AOI
| Posted Comments: | |
marcosousa011
(posted 2016-09-22 12:39:26.467) hello, i have bought the folowing product: CM750-500-E02 - Ø75 mm Dielectric-Coated Concave Mirror, 400 - 750 nm, f = 500 mm.
I would like to know the error (+/-) of the focal distance (f). jlow
(posted 2016-09-23 10:11:01.0) Response from Jeremy at Thorlabs: The focal length tolerance is ±0.1mm. rthalman
(posted 2013-12-05 13:18:45.903) Is it possible to have you polish the back side of these instead of engraving it and putting the rough finish on?
I would like to use it for a Cavity Enhanced spectroscopy instrument.
Ryan Thalman
Research Associate
Brookhaven National Lab. tcohen
(posted 2013-12-05 08:56:27.0) Response from Tim at Thorlabs to Ryan: Thanks for your inquiry! We can provide customs such as this through our technical team at techsupport@thorlabs.com. An applications engineer will contact you with a quote and to discuss your transmission requirements. |
Click on a particular graphed line or the corresponding name in the legend to view concave mirrors with that coating option.
Metallic-Coated Concave Mirrors are available in UV Enhanced Aluminum, Aluminum, Silver, and Gold.
Concave Dielectric Coated Mirrors
Click to Enlarge
Raw Data
Reflectance of -E02 Dielectric-Coated Concave Mirrors at 8° AOI.
These mirrors are also available with a Back Side Polish.
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Click to Enlarge
Raw Data
Reflectance of -E03 Dielectric-Coated Concave Mirrors at 6° AOI.
These mirrors are also available with a Back Side Polish.
Concave Crystalline Coating Mirrors
| Item # | Focal Length | Center Thickness | Edge Thickness | Radius of Curvature | Surface Irregularity | Thickness Tolerance | Reference Drawing |
|---|---|---|---|---|---|---|---|
| CM127-012-E02 | 12 mm | 3.0 mm | 3.8 mm | 24.0 mm (0.94") | λ/4 @ 633 nm | ±0.2 mm |  |
| CM127-025-E02 | 25 mm | 3.4 mm | 50.0 mm (1.97") | ||||
| CM127-050-E02 | 50 mm | 3.2 mm | 100.0 mm (3.94") |
| Item # | Focal Length | Center Thickness | Edge Thickness | Radius of Curvature | Surface Irregularity | Thickness Tolerance | Reference Drawing |
|---|---|---|---|---|---|---|---|
| CM254-025-E02 | 25 mm | 6.0 mm | 7.6 mm | 50.0 mm (1.97") | λ/4 @ 633 nm | ±0.2 mm | |
| CM254-050-E02 | 50 mm | 6.8 mm | 100.0 mm (3.94") | ||||
| CM254-075-E02 | 75 mm | 6.5 mm | 150.0 mm (5.91") | ||||
| CM254-100-E02 | 100 mm | 6.4 mm | 200.0 mm (7.87") | ||||
| CM254-150-E02 | 150 mm | 6.3 mm | 300.0 mm (11.81") | ≤λ/4 @ 633 nm | ±0.1 mm | ||
| CM254-200-E02 | 200 mm | 6.2 mm | 400.0 mm (15.75") | ||||
| CM254-250-E02 | 250 mm | 6.2 mm | 500.0 mm (19.69") | ||||
| CM254-500-E02 | 500 mm | 6.1 mm | 1000.0 mm (39.37") | ||||
| CM254-750-E02 | 750 mm | 6.1 mm | 1500.0 mm (59.06") | ||||
| CM254-1000-E02 | 1000 mm | 6.0 mm | 2000.0 mm (78.74") |
| Item # | Focal Length | Center Thickness | Edge Thickness | Radius of Curvature | Surface Irregularity | Thickness Tolerance | Reference Drawing |
|---|---|---|---|---|---|---|---|
| CM508-050-E02 | 50 mm | 9.0 mm | 12.2 mm | 100.0 mm (3.94") | λ/4 @ 633 nm | ±0.2 mm | |
| CM508-100-E02 | 100 mm | 10.6 mm | 200.0 mm (7.87") | ||||
| CM508-150-E02 | 150 mm | 10.1 mm | 300.0 mm (11.81") | ||||
| CM508-200-E02 | 200 mm | 9.8 mm | 400.0 mm (15.75") | ||||
| CM508-500-E02 | 500 mm | 9.3 mm | 1000.0 mm (39.37") | ≤λ/4 @ 633 nm | ±0.1 mm | ||
| CM508-750-E02 | 750 mm | 9.2 mm | 1500.0 mm (59.06") | ||||
| CM508-1000-E02 | 1000 mm | 9.2 mm | 2000.0 mm (78.74") |
| Item # | Focal Length | Center Thickness | Edge Thickness | Radius of Curvature | Surface Irregularity | Thickness Tolerance | Reference Drawing |
|---|---|---|---|---|---|---|---|
| CM750-075-E02 | 75 mm | 12.0 mm | 16.7 mm | 150.0 mm (5.91") | λ/4 @ 633 nm | ±0.2 mm | |
| CM750-150-E02 | 150 mm | 14.3 mm | 300.0 mm (11.81") | ||||
| CM750-200-E02 | 200 mm | 13.7 mm | 400.0 mm (15.75") | ||||
| CM750-500-E02 | 500 mm | 12.7 mm | 1000.0 mm (39.37") |
VIS Dielectric Concave Mirrors