Method and apparatus for measuring concentration by light projection

A measuring apparatus that has a projection optical system, projects measuring light onto a measured object, and detects a spectral intensity of the light transmitted or reflected by the measured object to measure a concentration of a particular component within the measured object based on the spectral intensity;

• said measuring apparatus comprising:
• measured-object mounting means for mounting the measured object,
• image pickup means for taking a picture of the measured object,
• image display means for displaying an image of the measured object,
• image registration means, during registration of a measuring location, for storing as a registered image an image in which a part having a visually recognized feature is marked by selecting the part from a pattern of the image of the measured object displayed on said image display means, and
• moving means, during the restoration of the measuring location, for comparing the pattern of said registered image with a pattern of a currently taken image of the measured object to move said projection optical system so that the measuring light is projected onto a location of a part corresponding to the marked part of the registered image, in the currently taken image of the measured object;
• wherein the measurement is always performed by projecting the measuring light onto an identical part of the measured object;
• wherein said projection optical system moves in the direction of the Z axis.

A measuring apparatus that has a projection optical system, projects measuring light onto a measured object, and detects a spectral intensity of the light transmitted or reflected by the measured object to measure a concentration of a particular component within the measured object based on the spectral intensity;

• said measuring apparatus comprising:
• measured-object mounting means for mounting the measured object,
• image pickup means for taking a picture of the measured object,
• image display means for displaying an image of the measured object,
• image registration means, during registration of a measuring location, for storing as a registered image an image in which a part having a visually recognized feature is marked by selecting the part from a pattern of the image of the measured object displayed on said image display means, and
• moving means, during the restoration of the measuring location, for comparing the pattern of said registered image with a pattern of a currently taken image of the measured object to move said projection optical system so that the measuring light is projected onto a location of a part corresponding to the marked part of the registered image, in the currently taken image of the measured object;
• wherein the measurement is always performed by projecting the measuring light onto an identical part of the measured object;
• wherein said projection optical system rotates around the Z axis.

A measuring apparatus that has a projection optical system, projects measuring light onto a measured object, and detects a spectral intensity of the light transmitted or reflected by the measured object to measure a concentration of a particular component within the measured object based on the spectral intensity;

• said measuring apparatus comprising:
• measured-object mounting means for mounting the measured object,
• image pickup means for taking a picture of the measured object,
• image display means for displaying an image of the measured object,
• image registration means, during registration of a measuring location, for storing as a registered image an image in which a part having a visually recognized feature is marked by selecting the part from a pattern of the image of the measured object displayed on said image display means, and
• moving means, during the restoration of the measuring location, for comparing the pattern of said registered image with a pattern of a currently taken image of the measured object to move said protection optical system so that the measuring light is projected onto a location of a part corresponding to the marked part of the registered image, in the currently taken image of the measured object;
• wherein the measurement is always performed by projecting the measuring light onto an identical part of the measured object;
• wherein said measuring apparatus further comprises a contact pressure sensor that detects contact pressure between the measured object and said measured object mounting means, a contact pressure memory that stores an output of said contact pressure sensor, and a pressurization device that reproduces the contact pressure stored in said contact pressure memory.

A measuring apparatus that has a projection optical system, projects measuring light onto a measured object, and detects a spectral intensity of light transmitted or reflected by the measured object to measure a concentration of a particular component within the measured object based on the spectral intensity;

• said measuring apparatus comprising:
• measured-object mounting means for mounting the measured object,
• image pickup means for taking a picture of the measured object,
• image display means for displaying the image of the measured object,
• image registration means, during the registration of the measuring location, for storing as a registered images an image in which a part having a visually recognized feature is marked by selecting the part from a pattern of the image of the measured object displayed on said image display means,
• measuring location identifying means during the restoration of said measuring location, for comparing the pattern of the registered image with a pattern of the currently taken image of the measured object, identifies a location of the part corresponding to the marked part of the registered image, in the currently taken image of the measured object,
• moving means for moving said projection optical system so that the measuring light is projected onto the part identified by said measuring location identifying means,
• light receiving optical means for receiving the light transmitted or reflected by the measuring part,
• spectral intensity detecting means for detecting the spectral intensity of the light transmitted or reflected by the measured object and received by said light receiving optical system,
• arithmetic processing means for computing the concentration of a particular component within the measured object based on the spectral intensity, and
• output means for outputting the concentration of the particular component.