Multilayer thin film bandpass filter

Details Multilayer thin film bandpass filter Multilayer thin film bandpass filter

1995-06-28

1999-12-07

Spyrou, Cassandra

Optical: systems and elements

Light interference

Produced by coating or lamina

359587, 359588, 359885, G02B 528, G02B 510, G02B 522

Patent

active

059993227

ABSTRACT:
A novel design for producing bandpass filters with essentially square shapes with little or no ripple in the passband zone. Filters are of the all-dielectric type that consist of multiple cavities of bandpasses with the first and last cavities consisting of four less layers than the inner cavities. The inner cavities are all identical. All of the cavities are separated from each other by quarter wave thick layers of low index material. Layers of low index material may be added between the filter and the entrance and exit mediums. The thickness of the first few layers and last few layers may be altered to enhance the transmission of the filter by matching the index structure of the passband to the adjacent mediums.

REFERENCES:
patent: 4756602 (1988-07-01), Southwell et al.
patent: 5023944 (1991-06-01), Bradley
patent: 5144498 (1992-09-01), Vincent
patent: 5583683 (1996-12-01), Scobey
patent: 5719989 (1998-02-01), Cushing

Affiliated with

Also associated with

Rating

Multilayer thin film bandpass filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multilayer thin film bandpass filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilayer thin film bandpass filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-830718