| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359301000 | Acting on polarized light | 9 |
| 20090213453 | Measurements of polarization-dependent loss (PDL) and degree of polarization (DOP) using optical polarization controllers - Devices and techniques that use a polarization controller and a feedback control to the polarization controller to systematically control the polarization of light output from the polarization controller in measuring the polarization dependent loss (PDL) of an optical device or material that receives the light from the polarization controller or the degree of polarization (DOP) of a light beam directed into the polarization controller. | 08-27-2009 |
| 20100079852 | POLARIZATION NULLING INTERFEROMETRY - The invention relates to an optical system for providing on-axis destructive interference of light received from an object along a predetermined system optical axis. The system comprises a receiving and guiding optical structure and a combining optical structure. The receiving and guiding optical structure is for receiving and guiding at least three beams of light received from the receiving and guiding optical structure arranged to provide a relative optical path difference between the at least three beams; the combining optical structure is for combining the at least three beams. According to the invention, a polarization varying optical structure is arranged between the receiving and guiding optical structure and the combining optical structure, for varying a polarization state of the beams relative to each other in order to provide on-axis destructive interference. | 04-01-2010 |
| 20100296152 | POLARIZATION CONTROLLER AND POLARIZATION MODE DISPERSION COMPENSATOR - A polarization controller includes a first polarization controller, a demultiplexer, a second polarization controller, and a multiplexer. The first polarization controller controls the state of polarization of input light such that a part of the wavelength components of the input light is in a first state of polarization. The demultiplexer demultiplexes the light output from the first polarization controller into a plurality of wavelength components. The second polarization controller controls the plurality of wavelength components in a second state of polarization by using liquid crystal modulation devices. The multiplexer multiplexes the plurality of wavelength components output from the second polarization controller. | 11-25-2010 |
| 359302000 | Using reflecting or cavity structure | 1 |
| 20110310466 | Electrically Controlled Optical Elements and Method - The effective focal length of an optical system can be electronically controlled using switchable wave plates in conjunction with polarized light. | 12-22-2011 |
| 359303000 | Using more than one polarization (e.g., digital) | 5 |
| 20080316585 | Optical Wavelength Selective Router - A fiber-optical, wavelength selective switch, especially for channel routing with equalization and blocking applications. The input signals are converted to light beams having predefined polarizations ( | 12-25-2008 |
| 20090021824 | OPTICAL PATH LENGTH ADJUSTER - An optical path length adjuster enables electro-optical control of a physical path length between two optical elements, suitable for use in the adjustment of an optical path length within three dimensional display devices that generate a virtual image within a defined imaging volume. The adjuster varies an optical path length between an input optical path and an output optical path and includes: a first polarisation switch for selecting a polarisation state for an input beam on the input optical path; first and second beam splitters having at least two possible optical paths of different lengths therebetween, for passing the input beam along a selected one of said at least two possible optical paths according to the selected polarisation state of the input beam and for providing an output beam of light, on said optical output path, that has traveled along the selected optical path. | 01-22-2009 |
| 20090195860 | Optical modulator and optical signal generation apparatus - An optical modulator includes, a first polarization separation and combination portion, a second polarization separation and combination portion, a first polarization plane-maintaining optical fiber, a second polarization plane-maintaining optical fiber, a third polarization plane-maintaining optical fiber of which a first end is coupled with the second input and output terminal of the second polarization separation and combination portion, the third polarization plane-maintaining optical fiber including a first optical coupler, to which control light that is linearly polarized light is input, a fourth polarization plane-maintaining optical fiber of which a first end is coupled with the third input and output terminal of the second polarization separation and combination portion; and a first polarization plane conversion portion that optically communicates with a second end of the third polarization plane-maintaining optical fiber and a second end of the fourth polarization plane-maintaining optical fiber. | 08-06-2009 |
| 20110255147 | OPTICAL MODULATOR - The present invention realizes an enhancement of a fabrication yield and a reduction of a size regarding an optical modulator or an optical device including polarization beam combining means. An optical modulator of the present invention (1) includes: first and second optical modulators (LN optical modulators ( | 10-20-2011 |
| 20140320952 | Head-Up Display Device - A head-up display device operated in a vehicle comprises: a first image source disposed under the windshield of the vehicle, which emits a first polarized image light having a first polarization; a light path combining component in front of the first image source, which is for that the first polarized image light firstly goes to the light path combining component and only lets the first polarized image light be through and then the image light goes to the windshield, part of the image light is reflected by the windshield to a driver's eyes; and a second image source inside the vehicle, which emits a second polarized image light having a second polarization and then the image light directly goes to or reflects at least one time to the combining component, continuously to the windshield, and the second polarized image light is partially reflected by the windshield to the eyes. | 10-30-2014 |
