Blue and Green Filters

BLF - GRF

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BLF - GRF

A filter that transmits a specific wavelength at green from blue, and cuts off other wavelengths in the visible range. It is used to select blue or green wavelength from a light emission or select a specific wavelength from multi-wavelengths.

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Blue Filter 50mm 370nm
BLF-50S-370B

50mm x 50mm

1 week

£65.40

Dimensions	50 × 50mm
Thickness	2.5mm
Material	Glass (containing a substance of optical absorption)
Color tone	Blue
Center wavelenght	370nm
Transmittance for center wavelength	＞82%
Absorption limit short wavelength	289nm
Transmittance at short absorption limit	＜0.5%
Absorption limit long wavelength	486nm
Transmittance at longt absorption limit	＜0.1%
Average Transmittance <br>(absorption limit long wavelength − 700nm)	＜0.1%

Blue Filter 50mm 440nm
BLF-50S-440B

50mm x 50mm

6-12 weeks

£81.70

Dimensions	50 × 50mm
Thickness	2.5mm
Material	Glass (containing a substance of optical absorption)
Color tone	Blue
Center wavelenght	440nm
Transmittance for center wavelength	＞44%
Absorption limit short wavelength	358nm
Transmittance at short absorption limit	＜1%
Absorption limit long wavelength	535nm
Transmittance at longt absorption limit	＜0.5%
Average Transmittance <br>(absorption limit long wavelength − 700nm)	＜0.3%

Glass Filter 50mm 533nm
GRF-50S-533G

50mm x 50mm

1 week

£65.40

Dimensions	50 × 50mm
Thickness	2.5mm
Material	Glass (containing a substance of optical absorption)
Color tone	Green
Center wavelenght	533nm
Transmittance for center wavelength	＞50%
Absorption limit short wavelength	415nm
Transmittance at short absorption limit	＜0.1%
Absorption limit long wavelength	668nm
Transmittance at longt absorption limit	＜3.0%
Average Transmittance <br>(absorption limit long wavelength − 700nm)	＜3.0%

Blue Filter 50mm 390nm
BLF-50S-390B

50mm x 50mm

1 week

£81.70

Dimensions	50 × 50mm
Thickness	2.5mm
Material	Glass (containing a substance of optical absorption)
Color tone	Blue
Center wavelenght	390nm
Transmittance for center wavelength	＞78%
Absorption limit short wavelength	309nm
Transmittance at short absorption limit	＜5%
Absorption limit long wavelength	528nm
Transmittance at longt absorption limit	＜0.1%
Average Transmittance <br>(absorption limit long wavelength − 700nm)	＜0.1%

Blue Filter 50mm 460nm
BLF-50S-460B

50mm x 50mm

1 week

£81.70

Dimensions	50 × 50mm
Thickness	2.5mm
Material	Glass (containing a substance of optical absorption)
Color tone	Blue
Center wavelenght	460nm
Transmittance for center wavelength	＞84.5%
Absorption limit short wavelength	324nm
Transmittance at short absorption limit	＜5%
Absorption limit long wavelength	718nm
Transmittance at longt absorption limit	＜1.0%
Average Transmittance <br>(absorption limit long wavelength − 700nm)	＜14%

Glass Filter 50mm 541nm
GRF-50S-545G

50mm x 50mm

1 week

£65.40

Dimensions	50 × 50mm
Thickness	2.5mm
Material	Glass (containing a substance of optical absorption)
Color tone	Green
Center wavelenght	541nm
Transmittance for center wavelength	＞13%
Absorption limit short wavelength	483nm
Transmittance at short absorption limit	＜0.1%
Absorption limit long wavelength	621nm
Transmittance at longt absorption limit	＜0.1%
Average Transmittance <br>(absorption limit long wavelength − 700nm)	＜0.1%

Blue Filter 50mm 410nm
BLF-50S-410B

50mm x 50mm

1 week

£81.70

Dimensions	50 × 50mm
Thickness	2.5mm
Material	Glass (containing a substance of optical absorption)
Color tone	Blue
Center wavelenght	410nm
Transmittance for center wavelength	＞92%
Absorption limit short wavelength	261nm
Transmittance at short absorption limit	＜1%
Absorption limit long wavelength	625nm
Transmittance at longt absorption limit	＜0.5%
Average Transmittance <br>(absorption limit long wavelength − 700nm)	＜5%

Glass Filter 50mm 526nm
GRF-50S-530G

50mm x 50mm

1 week

£65.40

Dimensions	50 × 50mm
Thickness	2.5mm
Material	Glass (containing a substance of optical absorption)
Color tone	Green
Center wavelenght	526nm
Transmittance for center wavelength	＞15%
Absorption limit short wavelength	452nm
Transmittance at short absorption limit	＜0.1%
Absorption limit long wavelength	615nm
Transmittance at longt absorption limit	＜0.1%
Average Transmittance <br>(absorption limit long wavelength − 700nm)	＜0.1%

Glass Filter 50mm 548nm
GRF-50S-550G

50mm x 50mm

1 week

£65.40

Dimensions	50 × 50mm
Thickness	2.5mm
Material	Glass (containing a substance of optical absorption)
Color tone	Green
Center wavelenght	548nm
Transmittance for center wavelength	＞80%
Absorption limit short wavelength	406nm
Transmittance at short absorption limit	＜0.1%
Absorption limit long wavelength	637nm
Transmittance at longt absorption limit	＜55%
Average Transmittance <br>(absorption limit long wavelength − 700nm)	＜55%

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◦A selection of different type of main wavelength and bandwidth from 370nm to 550nm.
◦To select a wavelength from a large bandwidth light.
◦By insertion of the filter into microscope or CCD camera will provide better contrast in a vision experiment.