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US 7,405,880 B2Granted
Multilayer optical filter
AssigneeAPI Nanofabrication and Research Corp.
InventorsAnguel N. Nikolov, Jian Jim Wang, Xu Ouyang, Feng Liu, Jiangdong Deng, Xuegong Deng, Greg E. Blonder, Ronnie Paul Varghese
Life of this patent
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Abstract
In one aspect, the invention features articles that include a substrate having a first surface and a second surface contiguous with the first surface. The first and second surfaces are non-coplanar. A first multilayer film is disposed on the first surface. A second multilayer film is disposed on the second surface. The second multilayer film is contiguous with the first multilayer film.
Claims38
An optical filter, comprising:
- a multilayer film defining an optical axis, wherein
- the optical filter transmits 50% of light having a wavelength λ1 propagating along the optical axis, and
- the optical filter transmits 50% of light having a wavelength λ2 incident on the multilayer film at an angle of 30 degrees with respect to the optical axis, wherein |λ1-λ2| is about 30 nm or less and λ1 is about 650 nm.
Dependencies are inferred from the claim text.