UV Dichroic Mirror UV Dichroic Filter

Ultraviolet dichroic mirrors are specialized optical filters that play an indispensable role in manipulating and isolating UV light. Constructed from UV-transparent substrate materials and dielectric thin-film coatings, they are engineered to reflect UV wavelengths while transmitting visible and longer wavelengths precisely.

 

Our new UV-Shield Dichroic Mirror blocks over 99% of damaging ultraviolet light while allowing visible light to pass through, keeping your sensitive optics and samples safe. The mirror's multi-layer dielectric coating reflects UV wavelengths from 280-400nm but transmits over 90% of visible light. Available in 1-3 inch diameters, it maintains peak performance for thousands of hours. With a 45-degree angle of incidence, the UV-Shield Dichroic Mirror provides precise, durable UV rejection. For custom dichroic designs or more information, contact our engineers to see how our innovative mirror can protect against UV degradation.

 

Features

- Reflects over 99% of UV light from 280-400nm

- Maintains over 90% transmission of visible light

- Multi-layer dielectric coating for precise UV rejection

- 45° angle of incidence

- Available in 1", 2" and 3" diameter sizes

- High laser damage threshold

- Durable coating maintains performance for thousands of hours

- Precisely blocks UV while transmitting visible

- Customizable dimensions and coatings available

- Optimized for use with sensitive optics, coatings, and samples

- Protects against UV degradation and damage

 

Parameters

Product Name	UV Dichroic Mirror
UV Reflectance	>99% (280-400nm)
Visible Transmissioon	>90%
Cutoff Wavelength	280nm
Angle of Incidence	45°
Available Sizes	1", 2", 3" diameters
Coating Durability	Thousands of hours
Operating Temperature	-40℃ to 80℃
Dimensions	Customizable
Coating	Multi-layer dielectric

 

Applications

- Fluorescence microscopy

Block UV excitation wavelengths while transmitting emitted visible fluorescence.

- Laser filtering

Remove UV wavelengths from a laser beam while passing visible/IR wavelengths.

- UV curing/lamp safety

Reflect harmful UV from curing lamps while allowing visible light through.

- Sensor protection

Reflect UV radiation to protect light sensors from damage.

- UV spectroscopy

Reflect or transmit specific UV wavelengths for analysis.

- Solar simulation

Reflect UVB/UVC from arc lamps while transmitting less harmful UVA/visible.

- UV photolithography

Transmit precise UV wavelengths for exposing photoresists.

- UV disinfection

Reflect germicidal UV wavelengths to contain them in a closed environment.

- Biologic research

Protect living cells or organisms from excessive UV during experiments.

 

What is the purpose of dichroic mirrors in fluorescence microscopy?

In fluorescence microscopy, a dichroic mirror is critical in exciting the fluorescent sample and capturing the resulting emission for detection. The mirror precisely reflects shorter wavelength excitation light through the objective to stimulate the piece while allowing the longer wavelength fluorescent emission to pass through the mirror and into the eyepiece or camera. This selective reflection and transmission separates excitation from emission light, improving contrast and signal strength. Excitation light would overwhelm the weaker fluorescence signal without the dichroic mirror to filter wavelengths. The mirror's ability to efficiently direct excitation to the sample and transmit only the emission enables high-quality fluorescence imaging. Dichroic mirrors thus provide essential wavelength discrimination in fluorescence microscopy systems.

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