High brightness solid state illumination system for fluorescence imaging and analysis

US10788678B2 · kind B2 · utility

Assignee

• Excelitas Canada, Inc. · CA

Inventors

• Yong Wang · Markham, CA
• Paul Constantinou · Burlington, CA
• Sola Anne Kuk · Toronto, CA

Key dates

• Filing date: Dec 12, 2018
• Grant date: Sep 29, 2020
• Expiry date: Dec 12, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/0071
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An illumination system includes a phosphor to emit light in a wavelength band ΔλPHOSPHOR, a second light source to emit light at a second wavelength λ2 within an absorption band of the phosphor, a third light source to emit light at a third wavelength λ3 and a fourth light source to emit light at a fourth wavelength λ4. A controller drives the second, third and fourth light sources. A first dichroic optical element: 1) directs light from the phosphor to an optical output of the system, 2) directs light from the third light source to the optical output, and 3) directs light from the fourth light source to the optical output. A second dichroic optical element: 1) directs light from the third light source to the first dichroic optical element, and 2) directs the light from the fourth light source to the first dichroic optical element.