Longpass Filter

Name: Longpass Filter
Brand: ECOPTIK(CHINA)LTD

One side is coated with a hard dielectric long-pass optical filter film, and the other side is coated with an anti-reflection film to achieve high transmittance and high damage threshold.

Uses Longpass Filter 

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Descriptions Specifications

Descriptions

Descriptions of Longpass Filter

Ecoptik China (also known as BRD Optical) has the advantages of wide cut-off band width, deep cut-off depth, high conversion steepness and high transmittance. It can be widely used in fluorescence excitation spectrum measurement, Raman spectrum application, spectrum grouping application, and astronomical observation application, etc. It can also be widely used in imaging optical system, machine vision system application, used to eliminate the interference light outside the available band, greatly improve the imaging clarity, as well as the sensitivity of the system.

Specifications

Specifications of Longpass Filter

Material	BK7
Transmittance	T>90%
Blocking Depth	OD2-OD4
AOI	0° or 45°
Surface quality	60/40
Clear aperture	>90%

Part No.	blocking Range (nm)	Blocking Depth	Transmission Range (nm)	Transmittance in pass band
LPF400	200-375	>OD2	420-1200	Tavg>85%
LPF425	200-405	>OD2	445-1200	Tavg>85%
LPF450	200-430	>OD2	470-1200	Tavg>85%
LPF475	200-455	>OD2	495-1200	Tavg>85%
LPF500	200-480	>OD2	520-1200	Tavg>85%
LPF525	200-550	>OD2	545-1200	Tavg>85%
LPF550	200-530	>OD2	575-1200	Tavg>85%
LPF575	200-550	>OD2	600-1200	Tavg>85%
LPF600	200-570	>OD2	625-1200	Tavg>85%
LPF625	200-595	>OD2	650-1200	Tavg>85%
LPF650	200-620	>OD2	675-1200	Tavg>85%
LPF675	200-645	>OD2	700-1200	Tavg>85%
LPF700	200-670	>OD2	725-1200	Tavg>85%
LPF725	200-695	>OD2	750-1200	Tavg>85%
LPF750	200-720	>OD2	775-1200	Tavg>85%
LPF775	200-745	>OD2	800-1200	Tavg>85%
LPF800	400-770	>OD2	825-1200	Tavg>85%
LPF825	400-795	>OD2	850-1200	Tavg>85%
LPF850	400-820	>OD2	875-1200	Tavg>85%
LPF875	400-845	>OD2	900-1200	Tavg>85%
LPF900	400-870	>OD2	930-1200	Tavg>85%
LPF925	400-895	>OD2	955-1200	Tavg>85%
LPF950	400-910	>OD2	980-1200	Tavg>85%
LPF975	400-935	>OD2	1010-1800	Tavg>85%
LPF1000	400-960	>OD2	1040-1800	Tavg>85%
LPF1025	400-985	>OD2	1070-1800	Tavg>85%
LPF1050	400-1010	>OD2	1110-1800	Tavg>85%
LPF1075	400-1035	>OD2	1130-1800	Tavg>85%
LPF1100	400-1060	>OD2	1160-1800	Tavg>85%

Contact ECOPTIK China Here

We are accustomed to working with both optics specialists and non-specialists, so regardless of your optics knowledge, we can help. Get in contact with ECOPTIK team to review your specific application needs and options.

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