Flexible Wavelength Selector High Resolution

The Flexible Wavelength Selector utilizes TwinFilm™ technology to deliver the tunable wavelength filtering characteristics of a grating monochromator together with the circular aperture imaging capabilities of a bandpass filter.

The Flexible Wavelength Selector (FWS) High Resolution is a manually tunable filter that provides smooth and precise manual adjustment; both the center wavelength and bandwidth are independently set with two multi-rotation manual dials for maximum resolution. An internal compensator maintains output alignment.

Key product advantages:

• Broad wavelength tuning
• Precise bandwidth adjustment (FWHM 2 – 16 nm)
• Circular uniform aperture
• High (10⁶) out of band extinction
• Compact (40 x 76 x 50 mm)

Uniform Circular Aperture

Uniform circular aperture simplifies spectral filtering of images and illumination sources, avoiding the limitations of a typical monochromator slit geometry.

Precise Manual Adjustment

Separate multi-rotation dials enable precise manual adjustment of both the center wavelength and the transmission bandwidth.

Simple Integration

Compact collinear geometry simplifies integration into microscopes, telescopes and cameras and other common photonic instruments.

High Extinction

High (10⁶) out of band extinction avoids unwanted spectral leakage and associated background noise typical of liquid crystal based filtering systems.

Ordering Infomation

* Int’l price may vary

	Product Number	Product Size	Center Wavelength	Spectral Range	FWHM Range	Aperture Size	Transmission	Availability
	FWS-H-M-380	Medium (40x76x50)	380 nm	358 ~ 400 nm	2 ~ 16 nm	10 mm	> 75 %	Quote Available
	FWS-H-M-425	Medium (40x76x50)	425 nm	395 ~ 447 nm	2 ~ 15 nm	10 mm	> 75 %	Quote Available
	FWS-H-M-475	Medium (40x76x50)	475 nm	447 ~ 501 nm	2 ~ 15 nm	10 mm	> 75 %	Quote Available
	FWS-H-M-530	Medium (40x76x50)	530 nm	496 ~ 561 nm	2 ~ 14 nm	10 mm	> 75 %	Quote Available
	FWS-H-M-595	Medium (40x76x50)	595 nm	555 ~ 628 nm	2 ~ 14 nm	10 mm	> 75 %	Quote Available
	FWS-H-M-665	Medium (40x76x50)	665 nm	621 ~ 703 nm	3 ~ 13 nm	10 mm	> 75 %	Quote Available
	FWS-H-M-745	Medium (40x76x50)	745 nm	687 ~ 790 nm	3 ~ 12 nm	10 mm	> 75 %	Quote Available
	FWS-H-M-845	Medium (40x76x50)	845 nm	784 ~ 900 nm	4 ~ 11 nm	10 mm	> 75 %	Quote Available

* FWHM range limit may vary depending on the center wavelength

* Spectral and FWHM range values are nominal