Type of device: Spectrophotometer
Spectral data, physical: from 410 to 680 nm
Spectral data, calibrated: from 400 to 720 nm, in steps of 10 nm
Sensor: Black-white CCD sensor (for spectral measurements)
Weight: 900 g
Lighting 2 x 45°, polarised, telecentric, monochromatic
Recording with 0°, polarised, telecentric
Measurement area: ~18 x 14 mm with 640 x 480 points
Digital resolution 640 x 480 = 307,200 (=N° of spectral curves)
Optical resolution: ~0.03 x 0.03 mm for each point
Repeat: better than dE of 0.5 on the tooth
Device compliance: better than dE of l on the tooth
Dental colour measurement made easy – fast, accurate and reliable
The patented colour measuring instrument consists of a spectrophotometer controlled by a Linux machine. Zfx™ Shade is user-friendly and compatible with Microsoft Windows. The spectrophotometer is equipped with LED lighting; for each measured wavelength another LED type is used. If the measuring button is pressed, the light source illuminates the entire spectrum of the visible light at short intervals. The colours are guided along a light conductor which divides into two light conductors and can thus bring together the symmetrical light on the measuring object. The image of the measuring object, illuminated by the coloured light, is then reflected onto a special black and white CCD sensor which is located at the end of the optic. This CCD sensor measures the data in the visible area from 400 to 700 nm.
Image recording & data transfer
For each image recording the internal computer analyses more than 2 million reference points and can also control all functionalities of the system. During shade taking the selected image detail is displayed as colour image on the high-resolution LCD. This enables correct positioning and thus the best measuring quality. In addition, the user interface which is operated via touch panel provides additional information about the patient data. There is the possibility to record a message which is then backed by the image.
The spectral images and spectral data can be stored on the device, transferred to the PC via W-LAN or SD memory card, or directly transmitted to the lab via e-mail or on CD-ROM.