Abstract: A glass sheet optical inspection system installed online in a glass sheet processing system includes an apparatus for measuring small optical or obstructive defects in a first selected area of the glass sheet by acquiring and developing a first set of image data, and an apparatus for measuring transmitted optical distortion in a second selected area of the glass sheet by acquiring and developing a second set of image data. The system may also include a glass sheet part identifier and a programmable control including logic for analyzing acquired image data and identifying the glass sheet as one of a set of known part types and thereafter securing and positioning the glass sheet based upon the part-shape analysis.

Abstract: A small defect detection apparatus installed online in a glass sheet processing system includes a line scan camera, a background screen including contrasting elements arranged in a pre-defined pattern, an upstream conveyor and a downstream conveyor, wherein the upstream conveyor and downstream conveyor are positioned end-to-end, spaced apart by a selected size gap such that the camera may acquire multiple images of the background screen as the unsupported portion of the glass sheet is conveyed over the gap, and a computer programmed to execute logic for receiving the set of image data comprising multiple images of the background screen and identifying small defects in the glass from the data. The system may also include a glass sheet part identifier and a programmable control including logic for analyzing acquired image data and selecting an area of interest on the glass sheet for the analysis.

Abstract: Disclosed is a projection device including a MEMS mirror which oscillates about one or more oscillation axes to scan light from one or more lasers, across a display screen, to project pixels which define an image onto a display screen. Also disclosed is a display method including selecting a laser class for the projection device; calculating a relationship between maximum accessible emission limit and distance, for the selected laser class; and selecting a desired maximum accessible emission limit for an image which is to be projected by the projection device onto said display screen.

Abstract: There is provided an information processing apparatus, an information processing method, and a program for reducing any drop in the accuracy of color correction, the information processing apparatus using a captured image captured by a calibrated imaging section imaging a projected image projected to a projection plane by a calibrated projection section in order to set color correction information as the information for correcting a color of each pixel of the projection section. This technology may be applied to electronic equipment having the functions of both a projector and a camera, or to a computer for controlling such electronic equipment.

Abstract: A projector includes: an exterior housing configuring an exterior; a projection optical device which projects an image toward a projection surface; and a plurality of operation buttons which, being disposed in such a way as to be exposed to the outside of the exterior housing, an image opening for allowing the image projected from the projection optical device to pass through is formed in one sidewall, among sidewalls configuring the exterior housing, which intersects in a vertical direction, the projection optical device includes a reflecting mirror which reflects the image, and projects it through the image opening, and the plurality of operation buttons are disposed on a side of the one sidewall farther from the projection surface than the image opening.

Abstract: Multiple Holocam Orbs observe a real-life environment and generate an artificial reality representation of the real-life environment. Depth image data is cleansed of error due to LED shadow by identifying the edge of a foreground object in an (near infrared light) intensity image, identifying an edge in a depth image, and taking the difference between the start of both edges. Depth data error due to parallax is identified noting when associated text data in a given pixel row that is progressing in a given row direction (left-to-right or right-to-left) reverses order. Sound sources are identified by comparing results of a blind audio source localization algorithm, with the spatial 3D model provided by the Holocam Orb. Sound sources that corresponding to identifying 3D objects are associated together. Additionally, types of data supported by a standard movie data container, such as an MPEG container, is expanding to incorporate free viewpoint data (FVD) model data.

Abstract: Embodiments of the present disclosure provide a projector and a method of driving a projector. The projector includes an image source for generating an image light and a transmission and reflection element. The image light includes a bright-state region image light and a dark-state region image light. The transmission and reflection element includes transmission and reflection units. Each of the transmission and reflection units is configured to reflect the image light irradiated thereon when in a reflective state, and to transmit the image light irradiated thereon when in a transmissive state. The transmission and reflection element is configured to perform one of a transmission and a reflection on the bright-state region image light so that the bright-state region image light is projected and displayed, and perform the other on the dark-state region image light so that the dark-state region image light is not projected and displayed.

Abstract: Methods, systems, and computer-readable media for generating a projected image are provided. Movement measurements are received from an accelerometer within a projection device. A determination is made as to whether the movement measurements indicate movement of the projection device. Upon determining that the movement measurements indicate movement of the projection device, a movement correction factor is determined based on the movement measurements to compensate for the movement of the projection device. The projection device is caused to generate a projected image according to the movement correction factor.

Abstract: A projector which configured to project a horizontally long image and a vertically long image, includes a cooling unit configured to cool a discharge lamp according to an installation attitude of the projector, a detection unit configured to detect the installation attitude, and a controller configured to control a discharge lamp driving unit and the cooling unit, in which the installation attitude includes a first attitude for projecting the horizontally long image and a second attitude for projecting the vertically long image, and in which the controller is configured to put out the discharge lamp in a case where the installation attitude detected by the detection unit is a third attitude which is different from both of the first attitude and the second attitude.

Abstract: A video projecting structure includes a substrate having a visible light transmittance greater than or equal to 5% and less than or equal to 90%, a front haze greater than or equal to 4 and less than or equal to 40, and a rear haze greater than or equal to 0 and less than or equal to 60. In a case where light is incident on a surface of the substrate at an angle of 45°, an intensity of a backward scattering light is lower than an intensity of a frontward scattering light.

Abstract: The invention proposes a lighting device (1) comprising a wavelength conversion arrangement (12) and a static band-stop filter (14). The wavelength conversion arrangement (12) comprises two wavelength conversion elements, which can be excited to emit conversion light by means of excitation radiation emitted by an excitation source (2). In order to increase the color space which is addressable by means of the two wavelength conversion elements, with the aid of the band-stop filter (14) the shorter dominant wavelength of the conversion light of both wavelength conversion elements is shortened and the longer dominant wavelength is lengthened. For this purpose, the peak wavelength of the band-stop filter (14) is chosen such that it lies between the two dominant wavelengths of the conversion light emitted by the two wavelength conversion elements. The use of a static band-stop filter (14) designed in this way makes it possible to dispense with separate filter elements for each wavelength conversion element.

Abstract: When each of a plurality of projection devices projects an image on a screen, in order to easily determine whether or not an association between identification information of each of the plurality of projection devices and positional relationship of each of the plurality of projection devices is correct, an image for notifying of an association between a predetermined area included in a display pattern and an external projection device is projected, and a communication unit of a projection device transmits information related to the association between the predetermined area included in the display pattern and the external projection device, which is inputted by an input unit, to the external projection device.

Abstract: A dual orientation connector having a connector tab with first and second major opposing sides and a plurality of electrical contacts carried by the connector tab. The plurality of contacts includes a first set of external contacts formed at the first major side and a second set of external contacts formed at the second major side. The first plurality of contacts are symmetrically spaced with the second plurality of contacts and the connector tab is shaped to have 180 degree symmetry so that it can be inserted and operatively coupled to a corresponding receptacle connector in either of two insertion orientations.

Abstract: A wearable augmented reality (AR) or virtual reality (VR) display apparatus includes an optical waveguide; an optical free-form surface; and a microdisplay; wherein optical free-form surface is optically coupled to the waveguide through an inclined optical path.

Abstract: A projection device includes a shell, a motherboard, a projection module and a image capturing module. The motherboard, the projection module and the image capturing module are all fixed in the shell. The motherboard transmits image data of a project. The projection module receives the image data and projects images to a projection medium. The image capturing module captures playing images on the projection medium and transmits the playing image to the motherboard. The motherboard further determines next image according to the playing image and transmits the next image to the projection module.

Abstract: An apparatus for performing gesture recognition and control based on ultrasonic positioning is disclosed. The apparatus includes an ultrasonic transmitter module for providing an original ultrasonic signal; an ultrasonic receiver for receiving an reflected ultrasonic signal corresponding to the original ultrasonic signal; a computing module for computing a frequency shift within a time period from the original ultrasonic signal being transmitted to the reflected ultrasonic signal being received, and converting the frequency shift into a gesture characteristic signal; a gesture database for providing reference gesture characteristic signals, and control signals corresponding to the reference gesture characteristic signals respectively; and a gesture recognition and control module for comparing the gesture characteristic signal with the reference gesture characteristic signals in the gesture database, and selecting a corresponding control signal from the data base according to a comparison result.

Abstract: A light module includes a wavelength conversion element and an excitation radiation source to emit excitation radiation having the first wavelength and arranged such that excitation radiation emitted by the excitation radiation source can be radiated onto the wavelength conversion element. The element has an emission spectrum having a red spectral component and a second dominant wavelength, which is less than a first dominant wavelength of the wavelength spectrum of the light to be generated by a predefinable value. The light module includes a long-pass filter arranged such that light emitted by the element can be radiated onto the long-pass filter. The long-pass filter is designed to filter the light emitted by the element and radiated onto the long-pass filter such that the filtered light has the wavelength spectrum of the light to be generated having the predefinable dominant wavelength.

Abstract: The invention proposes a lighting device (1) comprising a wavelength conversion arrangement (12) and a static band-stop filter (14). The wavelength conversion arrangement (12) comprises two wavelength conversion elements, which can be excited to emit conversion light by means of excitation radiation emitted by an excitation source (2). In order to increase the color space which is addressable by means of the two wavelength conversion elements, with the aid of the band-stop filter (14) the shorter dominant wavelength of the conversion light of both wavelength conversion elements is shortened and the longer dominant wavelength is lengthened. For this purpose, the peak wavelength of the band-stop filter (14) is chosen such that it lies between the two dominant wavelengths of the conversion light emitted by the two wavelength conversion elements. The use of a static band-stop filter (14) designed in this way makes it possible to dispense with separate filter elements for each wavelength conversion element.

Abstract: Desktop surface references are selected and applied to define a coordinate system for calibrating projected visual images and end user inputs at the projected visual images. For example, a desktop edge is detected with the depth camera by the increase in detected distance along the axis from the depth camera to the desktop edge, and then the desktop edge is used as an origin for a coordinate system that defines a projection area for presenting a user interface. Monitoring end user inputs and projected outputs relative to the desktop edge aids in coordinating interactions by a user through the projected user interface in the event the camera or projector move relative to the desktop surface.

Abstract: The present invention relates to a scanning probe (100) for the dimensional acquisition of an object (400) by irradiating the object (400) with light and detecting reflected light comprising: a detection unit (120) comprising an imaging sensor (122) and a sensor lens assembly (124) for detecting the reflected light, a light projecting unit (141) comprising a light source (142) for generating light, and source optics (145) for focusing the light, and light plane generating optics (143) for generating a light plane (149) for irradiating the object, and an adjustment mechanism (155) comprised in the light projecting unit (141), for adjusting the position or orientation of the light plane relative to the detection unit. It further relates to a method for assembly of a scanning probe (100).

Abstract: The present invention concerns a projection system for providing a distributed manifestation within an environment. The projection system includes a data generator for generating a plurality of data sets of associated state data and spatial coordinate data. The projection system also includes a projector in communication with the data generator for receiving the data sets. The projector is provided with a signal generating module for generating a plurality of electromagnetic signals, and a projecting module for projecting each of the electromagnetic signals towards a target location within the environment. The projection system also includes a plurality of receiving units distributed within the environment, each receiving unit having a receiver for receiving one of the electromagnetic signals when the receiving unit is positioned in the corresponding target location, each receiving unit being adapted to perform a change of state in response to the state data.

Abstract: A method for locating a camera and 3D reconstruction of its static environment, comprising an object of interest, the 3D model of which is known, includes: calculating an initial pose of the camera in the environment and an initial reconstruction; calculating the pose of the camera for each new image by pairing 3D primitives of the environment with 2D primitives of said image and reconstructing 3D primitives of the environment by triangulation; and simultaneously optimizing the poses of the camera and 3D primitives by minimizing a reprojection error over a plurality of images. The 3D model is a geometric description of the object of interest, the reprojection error has only two types of terms, a first type associated with primitives constrained by the 3D model and a second type associated with primitives of the environment other than the object, the optimization associating the primitives with the environment or 3D model.

Abstract: A light source apparatus includes a plurality of light source units, a sensor unit, and an interval control unit. The sensor unit is capable of receiving a plurality of emitted light beams from the plurality of light source units and sampling intensities of the emitted light beams at a predetermined sampling interval. The interval control unit is capable of controlling the predetermined sampling interval on the basis of an output characteristic relating to each of the emitted light beams from the plurality of light source units.

Abstract: A portable information processing device, including a main body comprising a projector configured to project an image; a state detection unit configured to detect a state of the main body; and an output control unit configured to control an output of the projector based on the state of the main body detected by the state detection unit.

Abstract: An interactive projection system for outputting illuminated indicia upon a projection surface. A detection system is operable to detect both stationary and movable features. A control system is operable to determine the position of the stationary and movable features. A reflective device reflects light from a light source (natural and/or artificial) upon the projection surface as the illuminated indicia. A drive system moves the reflective device, thereby moving the illuminated indicia across the projection surface in response to control system thereby simulating the stationary feature on the projection surface as a physical boundary to the illuminated indicia and simulating the movable feature contacting the illuminated indicia.

Abstract: A projection apparatus and a method for protecting the projection apparatus are provided. The projection apparatus includes a light source module, a light source control module, and an optical engine module. The light source module includes a light source and light conversion unit. The light source emits an illumination beam, and the light conversion unit converts the illumination beam into a plurality of color beams with different colors. The light source control module includes a light sensing unit and a control unit. The light sensing unit senses light intensities of the color beams, and the control unit determines whether to turn off the light source according to at least one of a light intensity proportion of the color beams and a sum of the light intensities of the color beams. The optical engine module receives the color beams to generate an image beam.

Abstract: A projector system includes: a position detecting unit that detects a pointed position of a pointer on a projection surface; a drawing unit that performs drawing on the projection surface according to the pointed position detected by the position detecting unit; a height detecting unit that detects a height of a user of a projector; and a display changing unit that changes, according to the user's height detected by the height detecting unit, at least one of a shape of the image projected onto the projection surface and a display position of the image on the projection surface.

Abstract: A control method of a projection device is provided. The control method comprises following steps. The light source generates a light beam towards a micro electro mechanical system (MEMS) module. The scan driver outputs a first direction scan signal and a second direction scan signal to the MEMS module for enabling the MEMS module to reflect the light beam to a projection surface. The first direction control system of the MEMS module is a second-order system and has a resonance frequency, and the first direction scan signal has a frequency within a frequency range containing the resonance frequency.

Abstract: The invention relates to a method for updating and/or for initializing, in a system comprising an image sensor oriented towards the horizon such as a pair of binoculars coupled to a geographical north seeker incorporating a gyrometer, a value representative of the orientation of the image sensor with respect to north, in which the shift of two images arising from the digital image sensor is determined at a first instant and at a second instant that are distinct so as to construct an item of information representative of an angular movement, and in which this angular movement information is utilized to: update the value of orientation of the image sensor;—and/or to discriminate the movements of the image sensor with respect to the ground from the movements of the image sensor that are due to the rotation of the earth, in a process for initializing the value of orientation of the image sensor using a north seeker of gyroscopic or gyrometric type rigidly tied to the image sensor.

Abstract: A system and method for determining intraoperative locations of a lesion in tissue from lesion locations determined in preoperative imaging includes determining three dimensional locations of surface features of the organ in the preoperative images. A preoperative surface map is extracted from stereo images annotated with surface features from preoperative images. An intraoperative surface map of the organ is extracted from stereo images, and surface features are identified in the stereo images corresponding to surface features annotated into the preoperative surface map. Three dimensional displacements of the surface features are determined and used to constrain a computer model of deformation of the organ. In embodiments, the model of deformation is adapted or constrained to model locations and dimensions of surgical cavities using an optical flow method and/or locations of surgical instruments in the organ. The model of deformation is used to determine intraoperative locations for the lesion.

Abstract: One or more devices capture a scene of real world, and process one or more image(s) which include distances to points on surfaces in the real world. The distances are used to automatically identify a set of surfaces in the real world. Then, the one or more devices check whether a surface in the set is suitable for display of an element of information to be projected into the scene. On finding that a surface is suitable, a transform function is automatically identified, followed by automatic application of the transform function to the element of the information. A transformed element, which results from automatically applying the transform function, is stored in a frame buffer coupled to a projector, at a specific position in the frame buffer identified during the check for suitability. When no surface is suitable, user input is obtained, followed by projection of information as per user input.

Abstract: This handwriting input device is equipped with an object to be coated 101, a detection means 102, and a display means 103. The object to be coated 101 is transparent or translucent. When a letter or a figure is written or drawn with a coating material, the detection means 102 detects a position in which the coating material attaches on the object to be coated 101. The display means 103 causes a visual change in accordance with the position in which attachment of the coating material is detected by the detection means 102, thereby displaying the letter or figure written or drawn with the coating material.

Abstract: A computer-readable recording medium stores a control program causing a processor of a first terminal to execute a process that includes detecting that a remaining battery level of the first terminal has become less than or equal to a first threshold while a task is under execution by the first terminal; suspending execution of the task upon detecting that the remaining battery level of the first terminal has become less than or equal to the first threshold; transmitting identification information of the task to a second terminal upon detecting that the remaining battery level of the first terminal has become less than or equal to the first threshold; receiving from the second terminal and after transmitting the identification information of the task, information related to a potential of executing the task; and transmitting to the second terminal, information corresponding to the information related to the potential of executing the task.

Abstract: A method of providing estimated power consumption information when content is used, the method including receiving a command to select one of a plurality of content; receiving first device information indicating information about a first portable device of a first user who is to use the selected content; and providing power consumption information estimated when the first portable device uses the selected content, based on the first device information and a power consumption database generated by pre-measuring power consumption of the plurality of content in a predetermined reference device.

Abstract: A projection display device includes an optical modulation element configured to modulate light outputting from a light source, and a projection unit configured to project light modulated by the optical modulation element on a projection screen. The projection display device includes an element control unit that controls the optical modulation element to display a test pattern image, an acquiring unit that acquires an image obtained by capturing the test pattern image from an image capture element that captures the test pattern image projected on the projection screen, and an adjusting unit that adjusts an image projected on the projection screen on the basis of the capture image acquired by the acquiring unit. The element control unit controls the optical modulation element such that a guidance image that guides focus adjustment of the image projected on the projection screen is displayed.

Abstract: An information processing apparatus comprises a confirming unit that makes a confirmation request asking whether or not an image projecting apparatus has a distortion correction function to previously correct distortion of a projection image due to projection, to the image projecting apparatus; an instructing unit that issues to the image projecting apparatus a distortion correction instruction to perform distortion correction on the projection image and project the projection image, when the image projecting apparatus has the distortion correction function; and a transmitting unit that transmits the projection image to the image projecting apparatus.

Abstract: A system for uniform distribution of light is provided. The system comprises: an integrating rod comprising an output end opposite an input end, the integrator rod configured to emit, at the output end an integrated image of light received at the input end, the integrated image having an etendue Eimg and an area Aimg at a given distance from the output end; and, an apparatus comprising an input side located at the given distance, the apparatus configured to: receive, at the input side, the integrated image from the output end of the integrating rod; split the integrated image into a number N of sub-images, each of the sub-images having an area Asub, and an etendue Esub, such that Aimg is about N*Asub, and Eimg is about N*Esub; and, relay the sub-images.

Abstract: A projector includes a main body including a projection unit which projects an image, a movement detecting unit which detects movement of the main body, and an imaging unit which captures an image of a screen. Furthermore, the projector includes a correction control unit which performs trapezoidal distortion correction on the basis of an image-capturing result, and a second processing unit which performs a second process, which is different from the trapezoidal distortion correction, on the basis of the image-capturing result. In a case where it is determined that the main body is moving on the basis of a detection result, an imaging control unit allows the correction control unit to perform the trapezoidal distortion correction, and in a case where it is determined that the main body is stopped, the imaging control unit allows a manipulation detecting unit to perform a manipulation detecting process.

Abstract: Example embodiments disclosed herein relate to determining a motion based on projected image information. Image information is projected onto an external surface from a device. Sensor information about the external surface and/or projection is received. Motion of the device is determined based on the sensor information.

Abstract: A projector includes a lens adjustment mechanism that performs a predetermined adjustment operation for a projection lens, an adjustment value storage unit that stores lens adjustment values for performing the predetermined adjustment operation by linking the lens adjustment values to the type of aspect ratio of an image signal, a signal aspect ratio recognition unit that recognizes the aspect ratio of the image signal input to an input terminal as a signal aspect ratio, an adjustment value acquisition unit that acquires, from the adjustment value storage unit, the lens adjustment values corresponding to the type of signal aspect ratio recognized by the signal aspect ratio recognition unit, and an adjustment control unit that causes the lens adjustment mechanism to perform a lens adjustment operation based on the lens adjustment values acquired by the adjustment value acquisition unit.

Abstract: An image display apparatus includes a communication unit to communicate with information processing apparatuses; an image synthesizing unit to synthesize a multi-segmented screen image composed of screen images of the information processing apparatuses; a projection unit to project the multi-segmented screen image onto a screen; a functional mode management unit to control switching between a normal projection mode and a multi-segmented screen operation mode; an image capture device to capture the multi-segmented screen image and a hand movement of an operator when switched to the multi-segmented screen operation mode; a designated screen image recognition unit to detect a hand movement of the operator based on the image captured by the image capture device, and to recognize a screen image designated as an active-target image; and a signal control unit to transmit a request of image data transmission to an information processing apparatus corresponding to the designated active-target image.

Abstract: Various embodiments provide a projection arrangement. The projection arrangement may include a discharge lamp; and a ballast for the discharge lamp. The ballast is designed to provide, during operation of the projection arrangement, a lamp current in the form of alternating current and having an average frequency and a preset waveform, which has a preset commutation scheme, to the discharge lamp. The preset commutation scheme is preset by a preset time sequence of commutations of the lamp current. The ballast is designed to provide the lamp current in such a way that the preset commutation scheme of the lamp current is deviated from repeatedly with at least one preset intervening time period by at least one DC phase with a preset time duration.

Abstract: An image projection apparatus and an image projection method are provided. The image projection apparatus includes a projection light source, a scanning module, a reflection mirror and an optical detector. The projection light source provides a projection light beam and the scanning module drives the projection light beam to scan along at least an axial direction. The reflection mirror is located on a scan path of the projection light beam. The optical detector detects the projection light beam reflected by the reflection mirror and generates synchronous signals. The image projection apparatus determines a scanning frequency of the projection light beam according to the synchronous signals.

Abstract: A projection apparatus includes a time-sharing light emitting device, a display device, a projection optical system, an illuminance sensor and a lighting determination unit. The time-sharing light emitting device successively emits color lights one by one. The display device modulates the color lights to form an image. The projection optical system projects the image. The illuminance sensor converts illuminance of the color lights into an electric signal which is an output of the illuminance sensor. The lighting determination unit compares the output with a first threshold value, and operates the time-sharing light emitting device in response to the output being more than the first threshold value, and stops the time-sharing light emitting device in response to the output being equal to or less than the first threshold value.

Abstract: A projector includes a light source, a filter unit, an auxiliary light source and a combiner. The light source produces a first beam of light having light in a plurality of ranges of wavelengths, corresponding to a plurality of colors. The filter unit is positioned in the optical path of the first light beam. The filter unit is configured in a first configuration during a first time interval and in a second configuration during a second time interval. When the filter unit is configured in the second configuration, the auxiliary light source produces a second beam of light. The combiner combines the first beam of light and the second beam of light. The combined beams of light are directed to a spatial light modulator.

Abstract: An electronic unit that include a projector (100) and removable module (102) that communicates data to the projector (100), wherein the projector (100) alters its power consumption in response to data received from the removable module (102).

Abstract: The present invention provides a micro projector device including a MEMS mirror, a laser source module, a detection module, and a control unit. The MEMS mirror has a first portion and a second portion, the first portion pivots to the second portion, and the first portion oscillates in relation to the second portion. The laser source module generates a laser light to a reflection plane of the first portion of the MEMS mirror. The detection module detects a capacitance value between the first portion and the second portion. The control unit determines the relative position between the first portion and the second portion according to the capacitance value, and provides image data to the laser source module according to the relative position. The reflection plane of the first portion is configured to reflect the laser light from the laser source module to a projection plane.

Abstract: A display system displays images projected by a plurality of projection type display devices so as to overlap each other. When a user uses this system, events occurring in these devices can be reliably delivered to the user. A commander and a slave project and display images so as to overlap each other. When a notification-required event occurs in the commander or the slave, the commander specifies this notification-required event. Then, the commander displays a first OSD image between the first OSD image and a second OSD image, which form an image corresponding to the specified notification-required event, in a predetermined region of a first screen of screens on which images are displayed. Also, the commander outputs to the slave a control signal to display the second OSD image in the predetermined region. The slave displays the second OSD image in the predetermined region when the control signal is received.

Abstract: An optical micro-projection system comprising the following components: at least one laser light source (200, 400, 402, 600); at least one movable mirror (102, 103, 203) for deviating light from said light source to allow generation of images on a projection surface (104, 301, 303, 306, 603); a self mixing module for measurement of the distance (604) between the projection source and a projection surface, said self mixing module comprising: —at least one photodiode (401, 601) for monitoring the light emission power of the laser light source; —an optical power variation counter for counting optical power variations (605); successive displacements of said mirror allowing the self mixing module providing successive projection distance measurements of a plurality of points of said projection surface. A projection method for optical micro-projection system and a distance measurement method are also provided.

Abstract: Systems, devices and methods for displaying control room data are disclosed. In some embodiments, the systems, devices and methods are employed by operators of infrastructure to depict the status of the infrastructure to provide situational awareness to the operators.