MINIATURIZED SYSTEM AND METHOD FOR MEASURING OPTICAL CHARACTERISTICS

• US 20110235039A1
• Filed: 06/06/2011
• Published: 09/29/2011
• Est. Priority Date: 02/21/2002
• Status: Active Grant

• Current Assignee: Vita Zahnfabrik H. Rauter GMBH & Co.. KG (Rauter Beteiligungsgesellschaft mbH)
• Original Assignee: Vita Zahnfabrik H. Rauter GMBH & Co.. KG (Rauter Beteiligungsgesellschaft mbH)
• Inventors: Jung, Russell W., Loudermilk, Alan R., Sloan, Walter W., Jung, Wayne D.
• Granted Patent: US 8,164,743 B2
• Time in Patent Office: Days
• US Class Current: 356/402
• CPC Class Codes: A61C 19/04 Measuring instruments specially adapted for dentistry A61C5/44 takes precedence; testing vitality of teeth A61B5/0534; radiation diagnosis specially adapted for dentistry A61B6/51
• CPC Class Codes: G01J 1/0271 Housings; Attachments or accessories for photometers
• CPC Class Codes: G01J 2003/466 Coded colour; Recognition of predetermined colour; Determining proximity to predetermined colour
• CPC Class Codes: G01J 3/02 Details
• CPC Class Codes: G01J 3/0218 using optical fibers
• CPC Class Codes: G01J 3/0256 Compact construction
• CPC Class Codes: G01J 3/0264 Electrical interface; User interface
• CPC Class Codes: G01J 3/0272 Handheld
• CPC Class Codes: G01J 3/0278 Control or determination of height or angle information for sensors or receivers
• CPC Class Codes: G01J 3/0291 Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
• CPC Class Codes: G01J 3/0294 Multi-channel spectroscopy
• CPC Class Codes: G01J 3/36 Investigating two or more bands of a spectrum by separate detectors
• CPC Class Codes: G01J 3/46 Measurement of colour; Colour measuring devices, e.g. colorimeters measuring colour temperature G01J5/60
• CPC Class Codes: G01J 3/462 Computing operations in or between colour spaces; Colour management systems
• CPC Class Codes: G01J 3/463 Colour matching
• CPC Class Codes: G01J 3/508 measuring the colour of teeth
• CPC Class Codes: G01J 3/51 using colour filters
• CPC Class Codes: G01J 3/513 having fixed filter-detector pairs
• CPC Class Codes: G01J 3/524 Calibration of colorimeters
• CPC Class Codes: G01N 21/25 Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• CPC Class Codes: G01N 21/57 : Measuring gloss

Abstract

A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems.

Claims

1. A method of determining optical properties of a dental object, the method comprising:

applying a barrier to a probe;

providing a reference object with known optical properties;

measuring the optical properties of the reference object with the probe having the applied barrier;

calibrating the probe having the applied barrier, using the known optical properties and the measured optical properties;

measuring the optical properties of the dental object with the calibrated probe;

storing data corresponding to a shade guide system having a plurality of shade guide values; and

calibrating the measured optical properties of the dental object in the form of a closest match or matches to one or more of the stored shade guide values.

2. The method of claim 1, wherein the optical properties include color information comprising value, chroma and hue information.

3. The method of claim 1, further comprising storing the calibrated measured optical properties of the dental object in a record of a database associated with a particular patient.

4. The method of claim 1, further comprising providing by a use, a type of material for the reference object or the dental object.

5. The method of claim 1, further comprising displaying the optical properties of the dental object on a display.

6. The method of claim 1, further comprising displaying the calibrated measured optical properties of the dental object on a display.

7. The method of claim 6, wherein the display further includes one or multiple known shade guide values.

8. The method of claim 6, wherein the display further includes one or more of the group consisting of Pantone colors, shades, paint formulations, closest match, and pass/fail results.

9. The method of claim 8, further comprising activating the display to further display deviation from a true color of the displayed closest match.

10. The method of claim 5, wherein the display further includes one or more of the group consisting of Pantone colors, shades, paint formulations, closest match, and pass/fail results.

11. The method of claim 10, further comprising activating the display to further display deviation from a true color of the displayed closest match.

12. The method of claim 10, further comprising activating the display to further display additional information regarding the measured optical properties relative to value, chroma and hue in the known shade guide values.

13. A method of determining optical properties of a dental object, the method comprising:

applying a barrier to a probe;

providing known calibration data;

calibrating the probe having the applied barrier, using the known calibration data and the measured optical properties;

measuring the optical properties of the dental object with the calibrated probe;

storing data corresponding to a shade guide system having a plurality of shade guide values; and

calibrating the measured optical properties of the dental object in the form of a closest match or matches to one or more of the stored shade guide values.

14. The method of claim 13, wherein the optical properties include color information comprising value, chroma and hue information.

15. A system for determining optical characteristics of a dental object comprising:

a calibration block of known optical characteristics;

a probe having a tip to capture the optical characteristics of the dental object and the calibration block;

a barrier applied to the tip of the probe;

a storage medium for storing data corresponding to a shade guide system having a plurality of shade guide values; and

a computer to calibrate the optical properties of the dental object measured by the probe having the applied barrier, in the form of a closest match or matches to one or more of the stored shade guide values.

16. The system of claim 15, further comprising:

a transmission medium for transmitting the calibrated optical properties of the dental object to a remote location; and

a second computer at the remote location for receiving the calibrated optical properties of the dental object to be used for producing a second dental object based on the calibrated optical properties.

17. The system of claim 15, further comprising a cradle for accepting the probe, wherein the first computer is configured to start calibrating the captured optical characteristics of the dental object when the probe is positioned inside the cradle.

18. The system of claim 15, further comprising a guide portion to guide the tip of the probe to land in a center portion of the calibration block to start calibrating.

19. The system of claim 15, wherein the optical properties include color information comprising value, chroma and hue information.