Dear Sir/Madam,
Could you please provide the transmission spectra of the dichroic mirrors in the LED-illumination module? I want to replace one or more of the LEDs and would like to know which options I have that don't require other dichroics.
Thanks in advance and best regards,
Bas
Hi Bas,
We saw your query. Please allow sometime to respond.
Regards,
Sanjeev
Bas,
Here are the transmission specifications of the dichroic filters used in the DLP LightCommander
T=transmittance (%)AOI - angle of incidence of impinging lightpol. - polarizationAR - anti-reflection coatingBlue:Dichroic/ARAOI=45, random– pol.T =< 5% avg 370 – 475* nmT = 50 % 485* ± 10 nm (Defined as the average ofwavelength of T=25% and T=75%)T >= 90 % avg 500* – 880 nm* Indicates that Actual wavelength for transmittance band range limit willshift with position of corresponding T=50% point.Red:Dichroic/ARAOI=45, random– pol.T >= 90% avg 370 – 550* nmT = 50 % 580* ± 20 nm (Defined as the average ofwavelength of T=25% and T=75%)T <= 5 % avg 605* – 880 nm* Indicates that Actual wavelength for transmittance band range limit willshift with position of corresponding T=50% point.IR:Dichroic/ARAOI=45, random– pol.T =< 5% avg 600 – 650* nmT = 50 % 750* ± 40 nm (Defined as the average ofwavelength of T=25% and T=75%)T >= 90 % avg 800* – 880 nm* Indicates that Actual wavelength for transmittance band range limit willshift with position of corresponding T=50% point.
The filters used in the LC are from Oerlikon Optics.
The optical design of the illumination module does not require a "green" filter.
Best regards,
Pascal
Dear Pascal,
Thank you very much for the fast reply!