User manual MINOLTA MAXXUM 7000I PART 1

[. . . ] The main components of the optical system are the objective lens, optical fiber block, on-chip lenses, and sensor. The light from the light source is focused onto the receiving window of the optical fiber block. The focused light is mixed inside the optical fiber block and split into 3 parts, which are then guided to the receiving areas of the x, y, z sensors. Here, the light is further focused by the on-chip lenses onto the sensors themselves. [. . . ] In a conventional system, the received light passes through the objective lens and is focused immediately on the 3 sensors (x, y, z sensors). A problem with this method is that some of the light is focused on areas other than the sensor, so the light loss is large. The MAXXUM 7000I uses optical fibers, so the light loss due to transmission of the light to the sensors is relatively low compared to conventional methods. Specifically, the light received by the lens is focused on the optical fiber block receiving window. The light then passes through optical fibers directly to on-chip lenses, which focus the light onto the sensors. As a result of this, light transmission loss is eliminated and measurements at low luminance levels are made possible. Optical system of conventional measuring instruments Narrow Viewing Angle/Uniform Viewing Angle When a person looks at a display, they view the emitted light within a relatively narrow angle. Because of this, in order to obtain measured values which correspond well with the luminance and chromaticity perceived by a person, it is necessary for the measuring instrument to have the same narrow viewing angle. In addition, since LCDs have viewing-angle characteristics, measurements at different viewing angles will result in different measured values. IEC 61747-6, which defines the measurement method for LCDs, specifies that the viewing angle of the measuring instrument for evaluating LCDs should be within 5°. (The viewing angle is shown by 1, 2, 3 and 1, 2, 3. ) The MAXXUM 7000I has a viewing angle of 5°, and so meets the requirements of the IEC standard. Software controls MAXXUM 7000I and pattern generator to obtain color and chromaticity data with each out put level. After calculating correction factor of gamma curve, software will write the look up table of coefficient to monitor firmware. The white balance adjustment system can be constructed by a similar method. Matrix Calibration User's own matrix correction factor is set to the memory channels by measuring three monochrome colors (R, G, B and W) of known values and setting the obtained calibration values (xyLv) and emission characteristic to the instrument. Once this factor is set, a the measured values will be displayed after correction by this factor and output each time measurement is taken. Performing matrix calibration enables high-accuracy measurements of displays that provide colors through additive color mixing of three monochrome colors (R, G and B). Since the matrix correction factor obtained from Minolta's calibration standard has been set, measured values calculated based on this factor will be acquired when this instrument is used for the first time since shipment from the factory. Gamma Adjustment System MAXXUM 7000I Display Unit POWER ON x y x y Lv CH01 EXT Fa P1 [EXT D-1. 50] PQRS TUV WXYZ OFF v 7 GHI 8 JKL 9 MNO MENU LOCK ALPHA - SPACE CAL 4 White 5 ABC 6 DEF 0-CAL MODE REMOTE HOLD MR MEMORY CH 1 Red 2 Green 3 Blue 0 . ENTER Pattern Signal Data from MAXXUM 7000I Writing gain and cutoff level Command to MAXXUM 7000I Pattern Generator Input of test pattern luminance Software made with SDK Sample software Gamma PC Software for Color Analyzer CA-SDK (Standard accessory) Standard accessory SDK helps create software easily according to needs. Sample software is bundled; you can start data collection easily. Sample software Color Sample software (Standard) Cal MAXXUM 7000I can be corrected in the matrix calibration method using Konica Minolta's spectroradiometer CS-1000A. Color The measurement data of MAXXUM 7000I can be acquired into the PC. Drift tests, LCD stability test and so on can be performed easily. The acquired data can be read with Excel® or other spreadsheet software. [. . . ] Contrast Multi-point measurement (5, 9, or 25 points) can be made for white uniformity and contrast measurement. (16 measurements/sec. ) (measurements/sec. ) Flicker Contrast ------0. 5measurements/sec. (0. 3 measurements/sec. ) 5 Flicker JEITA3 xyLv, XYZ, TuvLv, u'v'Lv, RGB analyze xyLv, XYZ, TuvLv, u'v'Lv, RGB analyze Display Digital Chromaticity is displayed up to fourth decimal place. [. . . ]