Thermal measuring and testing – Temperature measurement – In spaced noncontact relationship to specimen
Patent
1990-01-25
1991-04-30
Will, Thomas B.
Thermal measuring and testing
Temperature measurement
In spaced noncontact relationship to specimen
374130, 350 9618, 350 9623, G01J 510, G01J 508
Patent
active
050112961
ABSTRACT:
An infrared thermometer (10) with a fixed aperture (99), focusable remote pickup head (12) conveys infrared light (16) from a target (14) to a photosensor (52) of a defocused sensor head (20). The remote pickup head (12) has a reimaging lens (84) and means for selectively adjusting the focus of the lens (84) relative to the target (14) after the pickup head has been fixedly mounted. The aperture setting is kept fixed during the focus adjustment to eliminate the need to recalibrate after the focus adjustment. The defocused sensor head (20) has a defocused relay lens (50) which is selectively out of focus to convey a slightly blurred, out of focus image of the output end of the fiber optic cable (18) to the photosensor (52) to reduce noise, average the light signal and reduce calibration difficulties due to high intensity spots in the image field and to make the unit less susceptible to misfocusing. Precision is further enhanced by provision of a field stop member (86) with a narrow slot, for instance, for passing light only to selected parts of the input end of the fiber optic cable (18) which makes up the optical field.
REFERENCES:
patent: 2968946 (1961-01-01), Goldberg et al.
patent: 3311747 (1967-03-01), Smith, Jr. et al.
patent: 3745834 (1973-07-01), Veltze et al.
patent: 4021663 (1977-05-01), Takahashi
patent: 4118985 (1978-10-01), Compton
patent: 4153333 (1979-05-01), Harada et al.
patent: 4494881 (1985-01-01), Everest
patent: 4527896 (1985-07-01), Irani et al.
patent: 4533243 (1985-08-01), Zhukov et al.
patent: 4650318 (1987-03-01), Pointer et al.
patent: 4657385 (1987-04-01), Pointer
patent: 4664515 (1987-05-01), Imura et al.
patent: 4676592 (1987-06-01), Nishioka et al.
patent: 4737038 (1988-04-01), Dostoomian
patent: 4770528 (1988-09-01), Imura et al.
patent: 4815841 (1989-03-01), Bickler et al.
patent: 4867574 (1989-09-01), Jenkofsky
Bartosiak George
Goldberg Arthur E.
Paris Sam
Siskovic Christopher
Tap Henry H.
Femal Michael J.
Gutierrez Diego F. F.
Potthast James W.
Square D Company
Will Thomas B.
LandOfFree
Method of using infrared thermometer with remote fiber optic pic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of using infrared thermometer with remote fiber optic pic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of using infrared thermometer with remote fiber optic pic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-637057