The invention relates to an optical device (1) for enhancing the resolution of an image, comprising: a transparent plate member (10) configured for refracting a light beam (20) passing through the plate member (10), which light beam (20) projects an image comprised of rows and columns of pixels (40), a carrier (50) to which said transparent plate member (10) is rigidly mounted, wherein the carrier (50) is configured to be tilted between a first and a second position about a first axis (A), such that the plate member (10) is tilted between the first and the second position about the first axis (A), whereby said projected image (30) is shifted by a fraction (ΔP) of a pixel, particularly by a half of a pixel, along a first direction (x), and an actuator means (60) that is configured to tilt the carrier (50) and therewith the plate member (10) between the first and the second position about the first axis (A).

An apparatus for ophthalmic procedures contains a source of aiming and treatment laser beams, folded mirrors and lens arrays to cause the formation of a static pupil on a delivery mirror for observation and treatment by an operator of the apparatus.

The laser projection display device includes: a photo-sensor for detecting the quantity of laser light generated by the laser light source; and an image processing unit for processing a drive signal on the basis of the quantity of light of the detected laser light and supplying the processed drive signal to a driving unit for the laser light source. Right after the dimming, the image processing unit supplies the drive signal to the driving unit for the laser light source on the basis of the quantity of light of the detected laser light within a second execution cycle shorter than a first execution cycle which is the execution cycle used during the normal operation.

A beam director for use in 3D printers comprises a first mirror rotating about its longitudinal axis for redirecting a beam onto a second mirror and then onto a work surface, which may result in a beam with a distorted shape. A beam corrector, e.g. a lens or a reflective surface, is used to ensure the beam has the same desired dimensions in the first and second perpendicular direction when striking the work surface.

A beam director for use in 3D printers comprises a first mirror rotating about its longitudinal axis for redirecting a beam onto a second mirror and then onto a work surface, which may result in a beam with a distorted shape. A beam corrector, e.g. a lens or a reflective surface, is used to ensure the beam has the same desired dimensions in the first and second perpendicular direction when striking the work surface.

An illumination apparatus for reducing speckle effect in light reflected off an illumination target includes a laser; a linear diffuser positioned in an optical path between an illumination target and the laser to diffuse collimated laser light in a planar fan of diffused light that spreads in one dimension across at least a portion of the illumination target; and a beam deflector to direct the collimated laser light incident on the beam deflector to sweep across different locations on the linear diffuser within an exposure time for illumination of the illumination target by the diffused light. The different locations span a distance across the linear diffuser that provides sufficient uncorrelated speckle patterns, at an image sensor, in light reflected from an intersection of the planar fan of light with the illumination target to add incoherently when imaged by the image sensor within the exposure time.

The present disclosure provides an optical scanning apparatus and an electronic image-forming apparatus. The optical scanning apparatus includes a light source; a first optical unit; an optical deflector, configured to deflect the light beam emitted from the first optical unit; and a second optical unit, configured to guide the light beam deflected by the optical deflector on a scanned target surface for forming an image. An image height on the scanned target surface satisfies an expression: Y=fc×tan(B×θ), where Y denotes the image height on the scanned target surface, fc denotes an image-forming characteristic coefficient of the second optical unit, B denotes a scanning coefficient of the second optical unit, θ denotes an effective scanning angle of the optical scanning apparatus, and all region or a partial region in effective scanning range of the second optical unit satisfies a condition: 0.7≤B≤0.9.

A laser system (10) for generating a linear laser marking (38) on a projection surface (37), including: a laser beam source (11), which generates a laser beam (28) and emits it along a propagation direction (29), an offset device (16) having a first interface (21), at which a first deflection of the laser beam is effected, and a conical mirror (14), which is embodied as a right cone having a cone axis (15) and a reflective lateral surface (26), wherein the conical mirror (14) is arranged in the beam path of the laser beam downstream of the offset device (16). The offset device (16) is embodied as rotatable about an axis of rotation (17), wherein the axis of rotation is arranged coaxially with respect to the cone axis (15).

A laser system (10) for generating a linear laser marking (38) on a projection surface (37), including: a laser beam source (11), which generates a laser beam (28) and emits it along a propagation direction (29), an offset device (16) having a first interface (21), at which a first deflection of the laser beam is effected, and a conical mirror (14), which is embodied as a right cone having a cone axis (15) and a reflective lateral surface (26), wherein the conical mirror (14) is arranged in the beam path of the laser beam downstream of the offset device (16). The offset device (16) is embodied as rotatable about an axis of rotation (17), wherein the axis of rotation is arranged coaxially with respect to the cone axis (15).

An apparatus comprising: a thermally-actuated microactuator configured to deflect a component in dependence on an applied stimulus; and an extender having a length configured to increase deflection of the component by the microactuator, wherein the extender comprises one or more voids.