Invention Grant
US09312451B2 Apparatus, method to enhance color contrast in phosphor-based solid state lights
有权
用于增强基于荧光体的固态光的颜色对比度的装置，方法
- Patent Title: Apparatus, method to enhance color contrast in phosphor-based solid state lights
- Patent Title (中): 用于增强基于荧光体的固态光的颜色对比度的装置，方法
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Application No.: US13619085Application Date: 2012-09-14
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Publication No.: US09312451B2Publication Date: 2016-04-12
- Inventor: William G. Reed , John O. Renn
- Applicant: William G. Reed , John O. Renn
- Applicant Address: US WA Seattle
- Assignee: EXPRESS IMAGING SYSTEMS, LLC
- Current Assignee: EXPRESS IMAGING SYSTEMS, LLC
- Current Assignee Address: US WA Seattle
- Agency: Seed IP Law Group PLLC
- Main IPC: H01J61/40
- IPC: H01J61/40 ; H01L33/44 ; H01L33/50 ; G02B5/28
Abstract:
The efficiency and color contrast of a lighting device may be improved by using wavelength shifting material, such as a phosphor, to absorb less desired wavelengths and transmit more desired wavelengths. A double-notch reflective filter may pass desired wavelengths such as red and green, while returning or reflecting less desired wavelengths (blue and yellow) away from an optical exit back toward wavelength shifting material and re-emitted as light of more desirable wavelengths.
Public/Granted literature
- US20130062637A1 APPARATUS, METHOD TO ENHANCE COLOR CONTRAST IN PHOSPHOR-BASED SOLID STATE LIGHTS Public/Granted day:2013-03-14
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