公开(公告)号：CA2199868C

公开(公告)日：2000-05-16

申请号：CA2199868

申请日：1995-09-14

Applicant: X RITE INC

Inventor： BOWDEN DAVID R ,  BERG BERNARD J ,  BAKER DOUGLAS V ,  CARGILL MARK A ,  KALINKA GARY T

IPC: G01J3/28 ,  G01J3/50 ,  G01J3/51

Abstract: A portable spectrophotometer (100) includes a rotating wheel (214) provided with a plurality of filter characteristics in the 400 to 700 nanometer wavelength range and operated at a constant speed. The filters are moved between an optical conduit (210) and a photoelectric sensor (220) as the wheel is rotated. Light reflected from the object sample is conducted through the optical conduit (210) and focused on the optical sensor (220) by means of a focusing lens (252). A side sensor (222) receives light from one of the three lamps (206) through the filters as the wheel is rotated and provides output signals which are used as reference signals for the individual filters. An integrating sphere (512) with an aperture (541) for conducting specularincluded light reflected from the object and an aperture (543) for conducting specular-excluded light from the object is incorporated with a rotatable filter wheel (520), with a plurality of filters having filter characteristics in the 400-700 nanometers wavelength range.

公开(公告)号：CA2199868A1

公开(公告)日：1996-03-21

申请号：CA2199868

申请日：1995-09-14

Applicant: X RITE INC

Inventor： BERG BERNARD J ,  BAKER DOUGLAS V ,  BOWDEN DAVID R ,  CARGILL MARK A ,  KALINKA GARY T

IPC: G01J3/28 ,  G01J3/50 ,  G01J3/51

Abstract: A portable spectrophotometer includes a rotating wheel provided with a plurality of filters having filter characteristics in the 400 to 700 nanometer wavelength range. The filters are moved between an optical conduit and a photoelectric sensor as the wheel is rotated. In one embodiment, a lamp housing contains three object illuminating lamps circumferentially spaced apart by 120 DEG and projecting light onto the object sample at a 45 DEG angle to the object sample. Light reflected from the object sample is conducted through the optical conduit and focused on the optical sensor by means of a focusing lens. A blocking filter is interposed between the lens and the wheel and serves to block light outside of the 400 to 700 nanometer wavelength range. A side sensor receives light from one of the three lamps through the filters as the wheel is rotated and provides output signals which are used as reference signals for the individual filters. In another embodiment, the spectrophotometer includes an integrating sphere with an aperture for conducting specular-included light reflected from the object and an aperture for conducting specular-excluded light from the object. The integrating sphere spectrophotometer also includes a rotatable filter wheel, with a plurality of filters having filter characteristics in the 400 to 700 nanometers wave length range. A side sensor is also provided with the integrating sphere spectrophotometer. As the wheel is rotated, specular-included and specular-excluded light from an object sample to be tested is projected simultaneously through apertures of the sphere. Light detected by a side sensor is also simultaneously detected through one of the filters of the filter wheel. The integrating sphere spectrophotometer also includes an arrangement for providing calibration and compensation of reflectance measurements.

公开(公告)号：DE602005019709D1

公开(公告)日：2010-04-15

申请号：DE602005019709

申请日：2005-05-05

Applicant: X RITE INC

Inventor： KALINKA GARY T ,  WALKER TIMOTHY L ,  ROBINSON FREDERICK G ,  BERG BERNARD J ,  BAKER DOUGLAS V

IPC: G01J3/46 ,  G01J3/02 ,  G01J3/06 ,  G01J3/50 ,  G01N21/25 ,  G06F15/00

公开(公告)号：EP0781404A4

公开(公告)日：1999-07-21

申请号：EP95932504

申请日：1995-09-14

Applicant: X RITE INC

Inventor： BERG BERNARD J ,  BAKER DOUGLAS V ,  BOWDEN DAVID R ,  CARGILL MARK A ,  KALINKA GARY T

IPC: G01J3/28 ,  G01J3/50 ,  G01J3/51 ,  G01N21/25

CPC classification number: G01J3/50 ,  G01J3/0251 ,  G01J3/0272 ,  G01J3/51 ,  G01J3/524 ,  G01J2003/2866

Abstract: A portable spectrophotometer (100) includes a rotating wheel (214) provided with a plurality of filter characteristics in the 400 to 700 nanometer wavelength range and operated at a constant speed. The filters are moved between an optical conduit (210) and a photoelectric sensor (220) as the wheel is rotated. Light reflected from the object sample is conducted through the optical conduit (210) and focused on the optical sensor (220) by means of a focusing lens (252). A side sensor (222) receives light from one of the three lamps (206) through the filters as the wheel is rotated and provides output signals which are used as reference signals for the individual filters. An integrating sphere (512) with an aperture (541) for conducting specular-included light reflected from the object and an aperture (543) for conducting specular-excluded light from the object is incorporated with a rotatable filter wheel (520), with a plurality of filters having filter characteristics in the 400-700 nanometers wavelength range.