Abstract: Optical MEMS scanning micro-mirror comprising: —a movable scanning micro-mirror (101), being pivotally connected to a MEMS body (102) substantially surrounding the lateral sides of the micro-mirror, —a transparent window (202) substantially covering the reflection side of the micro-mirror; —wherein a piezo-actuator assembly (500) and a layer of deformable transparent material (501) are provided on the outer portion of said window (202); —the piezo-actuator assembly (500) being arranged at the periphery of the layer of transparent material (501); —said piezo-actuator assembly (500) and transparent material (501) cooperating so that when actuated, the piezo-actuator assembly (500) causes micro-deformation of the transparent material (501), thereby providing an anti-speckle effect. The invention also provides the corresponding micro-projection system and method for reducing speckle.

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: A micro-projection system for projecting light on a projection surface (104), comprising: —at least one coherent light source (101); —optical elements (102, 108, 109) in the optical path between said coherent light source and said projection surface; —said optical elements including at least one reflective member (102) actuated by a drive signal for deviating light from said light source so as to scan a projected image onto said projecting surface; —said optical elements including at least one pixel displacement unit (106) for providing a displacement signal synchronized with the image scanning signal so as to reduce speckle onto said projecting surface. The corresponding method for reducing speckle is also provided.

Abstract: A method of reducing speckle effects in a projected image which is displayed on a display surface, comprising the steps of splitting an incident beam into one reference beam and one modulation beam; modulating said modulation beam with a modulation unit so as to produce a modulated beam; recombining the modulated beam and the reference beam onto a diffuser; and deflecting the recombined beam so as to project said image onto said display surface.

Abstract: Optical MEMS scanning micro-mirror comprising: —a movable scanning micro-mirror (101) pivotally connected to a MEMS body (102) substantially surrounding the lateral sides of the micro-mirror; —an transparent prism (500, 600) substantially covering the reflection side of the micro-mirror; —wherein said prism has its outer face non-parallel to the micro-mirror neutral plane N-N, thereby providing a dual anti-speckle and anti-reflection effect, namely against parasitic light. The invention also provides the corresponding micro-projection system and method for reducing speckle.

Abstract: According to the present invention there is provided a method of projecting an image, the method comprising the steps of, providing light signal which is configured such that it can be projected onto a display surface to display an image; oscillating a first reflective surface, to scan the light signal over the display surface, using an actuator which is in operable co-operation with the first reflective surface, by applying a first actuation signal to the first reflective surface, wherein a rise time or fall time of the first actuation signal is inversely proportional to a resonant frequency of oscillation of the first reflective surface.

Abstract: Optical MEMS scanning micro-mirror comprising: —a movable scanning micro-mirror (101), being pivotally connected to a MEMS body (102) substantially surrounding the lateral sides of the micro-mirror, —a transparent window (202) substantially covering the reflection side of the micro-mirror; —wherein a piezo-actuator assembly (500) and a layer of deformable transparent material (501) are provided on the outer portion of said window (202); —the piezo-actuator assembly (500) being arranged at the periphery of the layer of transparent material (501); —said piezo-actuator assembly (500) and transparent material (501) cooperating so that when actuated, the piezo-actuator assembly (500) causes micro-deformation of the transparent material (501), thereby providing an anti-speckle effect. The invention also provides the corresponding micro-projection system and method for reducing speckle.

Abstract: Optical MEMS scanning micro-mirror comprising:—a movable scanning micro-mirror (101) pivotally connected to a MEMS body (102) substantially surrounding the lateral sides of the micro-mirror;—an transparent prism (500, 600) substantially covering the reflection side of the micro-mirror;—wherein said prism has its outer face non-parallel to the micro-mirror neutral plane N-N, thereby providing a dual anti-speckle and anti-reflection effect, namely against parasitic light. The invention also provides the corresponding micro-projection system and method for reducing speckle.

Abstract: According to the present invention there is provided a method of projecting an image, the method comprising the steps of, providing light signal which is configured such that it can be projected onto a display surface to display an image; oscillating a first reflective surface, to scan the light signal over the display surface, using an actuator which is in operable co-operation with the first reflective surface, by applying a first actuation signal to the first reflective surface, wherein a rise time or fall time of the first actuation signal is inversely proportional to a resonant frequency of oscillation of the first reflective surface.

Abstract: A micro-projection system for projecting light on a projection surface (104), comprising: at least one coherent light source (101); optical elements (102, 108, 109) in the optical path between said coherent light source and said projection surface; said optical elements including at least one reflective member (102) actuated by a drive signal for deviating light from said light source so as to scan a projected image onto said projecting surface; said optical elements including at least one pixel displacement unit (106) for providing a displacement signal synchronized with the image scanning signal so as to reduce speckle onto said projecting surface. The corresponding method for reducing speckle is also provided.

Abstract: A projection apparatus, comprising one or more light sources, wherein the one or more light sources are arranged to collectively provide a light signal which comprises multiple wavelengths, wherein the projection apparatus further comprises an optical filter configured to filter the light signal provided by the one or more light sources, so that two or more images may be projected simultaneously by the projection apparatus, each image being projected to a different position. There is further provided a scanning device which uses the afore-mentioned projection apparatus.

Abstract: According to the present invention there is provided a method for projecting an image on to a display surface, comprising the steps of, providing two or more projection systems; arranging the two or more projection systems such that they each project an image on a display surface; off-setting an oscillating reflective surface within at least one of the two or more projection systems such that the image projected by each of the two or more projection systems are in co-operation on the display surface.

Abstract: According to the present invention there is provided a projection device, which is configured to project an image which is co-operable with images projected by one or more other projection devices, wherein the projection device comprises a detector operable to detect characteristics of images projected on a display surface by the projection device and one or more other projection devices, and a controller operable to adjust the projection device and/or to adjust one or more of the other projection devices, based on the characteristics of the images detected by the detector, such that the images projected by each projection device co-operate on the display surfaces.

Abstract: According to the present invention there is provided a method for projecting a 3-D viewable image onto a display surface, comprising the steps of, providing two or more projection systems; arranging the two or more projection systems into a first group and second group, wherein the first group and second group each comprise one or more projection systems; arranging the first and second group of projection systems such that each group of project systems can project an image on a display surface, wherein the first group of projection systems is arranged such that the first group of projection systems can project an image to a first position on the display surface and the second group of projection systems is arranged such that the second group of projection systems can project an image to a second position on the display surface, wherein the first and second positions are off-set from one another; configuring the first and second group of projection systems such that the first and second group of projection sys

Abstract: A MEMS micro-minor device includes, a single package; a first mirror and second minor, wherein at least one of the minors is configured to oscillate along an oscillation axis; wherein both mirrors are located within the single package and are arranged such that as the at least one mirror oscillates, the light incident on the first micro-minor can be deflected to the second minor.

Abstract: A micro-projection system for projecting light on a projection surface, comprising: —at least one coherent light source (101); —optical elements (102, 108, 109) in the optical path between said coherent light source and said projection surface; —said optical elements including at least one reflective member (102) actuated by a drive signal for deviating light from said light source so as to scan a projected image onto said projecting surface; —said optical elements including at least one vibrating element (102) actuated by a vibrating signal so as to reduce speckle onto said projecting surface. The corresponding method for reducing speckle is also provided.

Abstract: An optical micro-projection system has at least one light source (401), at least one mirror (200) based on MEMS technology for deviating light from said light source, at least one beam splitter (403), and at least one wave plate (400). Each component has parallelepiped profiles with contact faces (500) on at least one side. Mutual alignment of at least two of the components is provided by mutual direct contact between reference contact faces (500) of the components. The architecture enables avoiding the use of dynamic optical assembly methods and to minimize the light loss within the system.

Abstract: An optical micro-projection system has at least one light source (401), at least one mirror (200) based on MEMS technology for deviating light from said light source, at least one beam splitter (403), and at least one wave plate (400). Each component has parallelepiped profiles with contact faces (500) on at least one side. Mutual alignment of at least two of the components is provided by mutual direct contact between reference contact faces (500) of the components. The architecture enables avoiding the use of dynamic optical assembly methods and to minimize the light loss within the system.