In one or more implementations, the apparatus, systems and methods disclosed herein are directed to calibrating a smart phone with an arbitrary phone case for color lookup applications, wherein the calibration process includes obtaining, with the smartphone without the case equipped, a first measurement data set that includes at least one measurement of each of a black, white and grey calibration target; obtaining, with the smartphone with the case equipped, at least three exposure measurements of a white calibration target at least three different exposure times; calculating an optimized exposure time using at least the at least three exposure measurements; obtaining, with the smartphone with the case equipped, a second measurement data set that includes at least one measurement of each of a black, white and grey calibration target at the optimized exposure time; generating fitting parameters from the first and second measurement datasets; and storing the generated fitting parameters and optimized exposure time in at least one of a local or remote data storage device.

Disclosed is a system for analyzing a display device, the system including: an image photographing device configured to photograph an image for inspection output from a display device to be inspected and obtain an RGB value for inspection from the photographed image; and an inspection control unit configured to convert the RGB value for inspection into a CIE XYZ value by using a previously prepared color conversion function, and determine defect of the display device to be inspected by using the converted CIE XYZ value.

An optical sensing module, including a frame, a light sensing element, and a diffusion element is provided. The light sensing element is disposed on the frame. The diffusion element is connected to the frame and is disposed above the light sensing element. In a first sensing mode, ambient light passes through the diffusion element before received by the light sensing element to make the optical sensing module to obtain light intensity of the ambient light. In a second sensing mode, the optical sensing module rotates around a first rotation axis to make the light sensing element face a display surface of the display device for receiving image light of the display surface so that the optical sensing module obtains brightness or chromaticity of the display device. A display device having this optical sensing module is also provided.

An organic light emitting diode analyzer is provided to test electrical and spectroscopic characteristics organic light emitting diodes (OLED). The analyzer includes a spectrometer, a luminance and color meter, a header of the luminance and color meter, an OLED a source meter, an OLED holder and a computer. The OLED analyzer is a characterization system to measure the electrical and spectral characteristics and feature of the OLED. The luminance and color meter includes a color sensor, and the luminance and color meter measures a luminance of the OLED, a color temperature of the OLED, and color coordinates of the OLED. The spectrometer measures a wavelength of the OLED, an irradiance, a color index, the color temperature, color coordinates and the irradiance (W/m.sup.2.Math.nm). The source meter applies positive voltages to the OLED, and the source meter measures a current through the OLED.

Embodiments of the present disclosure provides a method for detecting variation value comprising selecting a numerical value in a first time interval as a comparison basis; selecting a numerical value in a second time interval as a inspection interval; statistically identifying the numerical value of the inspection interval and the numerical value of the comparison basis are to detect a variation value.

A high-sensitive contactless chromaticity measuring device according to the present invention, includes: a lens unit to receive light emitted from a measurement object; a light distribution unit including an optical fiber to receive the light passing through the lens unit and distribute the received light through n paths to output the light to the other side, wherein a numerical aperture is greater than a predetermined reference value, a condensing lens to reduce an incidence angle of the light output to the other side of the optical fiber to a target angle or more, and n color filters to transmit different wavelengths of the light passing through the condensing lens; and a signal conversion unit including a photodiode to convert the light transmitted from the light distribution unit into an electrical signal.

A control method of a spectroscopic imaging device including an imaging element and a spectral element, the control method includes causing the spectroscopic imaging device to generate a first measurement spectrum consisting of N1 wavelengths by imaging a target object by making output wavelengths of a spectral element different when the spectroscopic imaging device is in a high accuracy mode and causing the spectroscopic imaging device to generate a second measurement spectrum consisting of N2 wavelengths by imaging the target object by making the output wavelengths of the spectral element different when the spectroscopic imaging device is in a high speed mode, in which N1 is an integer greater than or equal to two, and N2 is an integer less than N1.

A control device includes: a warm-up determiner which determines, when color calibration of a display device is to be performed, whether a warm-up of a colorimeter is necessary, based on a predetermined condition; a display controller which causes, when the warm-up determiner determines that the warm-up of the colorimeter is necessary, a predetermined image, which indicates an attachment position of the colorimeter onto the display device, to be displayed on the display device; and a warm-up controller which starts, when the colorimeter is determined as being attached at the attachment position, the warm-up of the colorimeter by using the display device.

An organic light emitting diode analyzer is provided to test electrical and spectroscopic characteristics organic light emitting diodes (OLED). The analyzer includes a spectrometer, a luminance and color meter, a header of the luminance and color meter, an OLED a source meter, an OLED holder and a computer. The OLED analyzer is a characterization system to measure the electrical and spectral characteristics and feature of the OLED. The luminance and color meter includes a color sensor, and the luminance and color meter measures a luminance of the OLED, a color temperature of the OLED, and color coordinates of the OLED. The spectrometer measures a wavelength of the OLED, an irradiance, a color index, the color temperature, color coordinates and the irradiance (W/m.sup.2.Math.nm). The source meter applies positive voltages to the OLED, and the source meter measures a current through the OLED.

A method for detecting emitted light from a display screen with a simple configuration and procedure without changing the position of the sensor. A method for detecting emitted light from a display screen of a display apparatus, including: a placement step of placing a photometric part including an optical sensor and a light guide member on a front surface side of the display screen, and a detection step of turning on any area of the display screen, guiding the emitted light from the area to the optical sensor by the light guide member, and detecting the emitted light with the optical sensor without changing the position of the optical sensor.