Class / Patent application number | Description | Number of patent applications / Date published |
356225000 | With predetector light modifier (e.g., diaphragm) | 8 |
20090033923 | Apparatus for detecting wavelength and measuring optical power - The present invention relates to a light wavelength and intensity measuring device. The device automatically measures a center wavelength of the light source and an intensity of the light corresponding to the center wavelength by using a main photodetector, at least one optical filter, and at least one sub photodetector when the light source is connected to the device. The main photodetector detects the intensity of the light applied by the light source, the optical filter transmits the light corresponding to a prediscriminated transmission wavelength, and the sub photodetector detects the intensity of the light transmitted through the optical filter. Therefore, the light intensity is more accurately measured by calibrating the intensity according to the wavelength. | 02-05-2009 |
20100060886 | TESTER FOR TESTING OPTICAL DETECTOR - Provided is a tester for testing an optical detector. The tester includes a plurality of light emitting units which emit light beams to the optical detector, wherein the light beams have light intensities different from each other, and a power supply unit which supplies electric power to the plurality of light emitting units. | 03-11-2010 |
20100091270 | Optical property measurement apparatus - An optical property measurement apparatus includes: a main body which includes a plane-shape surface that is so disposed as to face the display portion; an optical sensor which receives light directed from an opening that is formed through the plane-shape surface; and a support portion which is disposed on a side of the plane-shape surface and keeps a constant distance between the display portion and the plane-shape surface; wherein a light shield portion that is so disposed as to enclose a circumferential area of the opening of the plane-shape surface and shields entrance of light from a region other than a measurement target region of the display portion when the optical property is measured. | 04-15-2010 |
20110007306 | PHOTO-DETECTOR AND METHOD OF MEASURING LIGHT - Proposed is a light sensor ( | 01-13-2011 |
20110222053 | FRONT PLATE FOR DISPLAY, DISPLAY DEVICE, AND METHOD AND APPARATUS FOR MANUFACTURING FRONT PLATE FOR DISPLAY - The present invention relates to a front plate for a display comprising: a glass substrate having a first surface and a second surface; and a ceramic layer formed on at least a part of a marginal area of the second surface, wherein the front plate has a difference (ΔT) between a maximum light amount T | 09-15-2011 |
20120057151 | SIGNAL LIGHT MONITORING APPARATUS AND SIGNAL LIGHT MONITORING METHOD - An optical filter performs filtering on input monitor light in a transmission range having a carrier frequency of each channel being measured as a center frequency. Photoelectric convertors convert the monitor light filtered by the optical filter into an electrical monitor signal, and the signal detection unit judges whether signal light is present or absent based on the electrical monitor signal. Since the optical filter performs filtering, an S/N ratio of the monitor light becomes great and the signal detection unit can more accurately judge whether signal light is present or absent even in an optically noisy environment. | 03-08-2012 |
20130057854 | OPTICAL SIGNAL MEASUREMENT DEVICES - A device includes a female connector to receive a male network connector of a network conduit, and a first male connector optically communicating with the female connector, where the first male connector includes a first indicator that identifies a first wavelength optical signal. The device also includes a second male connector optically communicating with the female connector, where the second male connector includes a second indicator that identifies a second wavelength optical signal. The device further includes a wavelength splitter to receive an optical signal from the network conduit via the female connector, provide the optical signal to the first male connector when the optical signal corresponds to the first wavelength optical signal, and provide the optical signal to the second male connector when the optical signal corresponds to the second wavelength optical signal. | 03-07-2013 |
20160178431 | LIGHT MEASURING SYSTEM | 06-23-2016 |