Camera-based flame detector
AssigneeABB Research Ltd.
InventorHubert BRAENDLE
Life of this patent
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Abstract
A simple, multi-spectral flame detector is disclosed. Such a flame detector has an optical imaging system that is adapted to project several images of the flame onto the same camera. The images are from differing spectral regions. The imaging system comprises several lens devices arranged side by side, e.g., the imaging optics comprise several lens devices arranged side by side, such that each lens device is receiving part of the light from the flame. Each lens device projects one image onto one region of the camera. In this configuration, no beam splitters or mirrors are required, such components being expensive and difficult to align.
Claims20
A flame detector for monitoring a flame comprising:
- a camera,
- an optical imaging system for projecting several images of said flame in different spectral regions onto different spatial regions of the camera,
- at least one color filter,
- wherein said optical imaging system comprises several lens devices arranged side by side, each lens device projecting one of said images onto one of said regions of the camera.
Dependencies are inferred from the claim text.