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T>90%@515-535nm+R>99%@400-480nm,Longpass Dichroic Mirror(LPDM497)
SO3060500
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This LPDM497 longpass dichroic mirror is designed to reflect blue light from 400–480 nm while transmitting a green wavelength band from 515–535 nm.
It is suitable for fluorescence imaging, beam combining, and optical inspection systems using 405 nm or 450 nm blue laser and LED sources. It helps separate beams by wavelength, effectively reflecting shorter-wavelength blue excitation light while preserving the brightness of green emission signals for high-contrast detection.
Key specifications:
- Wavelength / main spec: Reflects 400–480 nm; Transmits 515–535 nm
- Bandwidth / transition spec: Longpass dichroic transition between 480 nm and 515 nm
- Transmission / blocking: T >90% (515–535 nm); R >99% (400–480 nm)
- Format / custom option: Available in mounted (dia 12.5–25 mm) and unmounted (25x36 mm to 35x52 mm) formats
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Product Faqs
What does a dichroic mirror do?
A dichroic mirror separates light by wavelength. It is designed to reflect one wavelength range while transmitting another wavelength range.
For example, a dichroic mirror may reflect a laser wavelength while transmitting a visible alignment beam, fluorescence signal, or another laser wavelength. The exact function depends on the reflection band, transmission band, and angle of incidence.
What angle of incidence should I use?
Most dichroic mirrors are designed for a specified angle of incidence, commonly 45°, unless otherwise stated.
Can this dichroic mirror be used to combine or separate laser beams?
Yes. Dichroic mirrors are commonly used for laser beam combining and beam separation when the wavelengths are different enough and the reflection/transmission bands match the system requirement.
For example, one wavelength may be reflected at 45°, while another wavelength passes through the mirror. Before ordering, please confirm the laser wavelengths, AOI, beam size, and required reflection/transmission performance.
Not sure if this product fits your setup?
Whether you are replacing an existing part or building a new system, send us:
- Original part number or target specification
- Required size and quantity
- Application or system goal
We will help check product fit or suggest a stock/custom alternative.