The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 1988
Filed:
Sep. 12, 1986
Hans F Mahlein, Unterhaching, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
An edge interference filter transmitting short-wave for great interchannel spacing of about 200 nm given an attenuation band wavelength of about 1300 nm. The filter is composed of a layer sequence of a total of 23 alternately high and low refractive index layers wherein the high index of refraction layers have an index of refraction of 2.08 and the low index of refraction layers have an index of approximately 1.45, the effective optical layer thickness of the individual layers is standardized to a 20.degree. angle of incidence and to 1/4 wavelength of the attenuation band center wavelength of 1260 nm with to layers 1 and 23 having a thickness of 1.146, layers 2 and 22 having a thickness of 0.909, layers 3 and 21 having a thickness of 1.039, layers 4 and 20 having a thickness of 0.932 and layers 5-19 having a thickness of 1.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile