An apparatus including a focused light beam receptor apparatus configured to be positioned proximate a first end of a vehicle, a focused light beam generator; and wherein the focused light beam receptor apparatus includes a focused light beam receiving surface for receiving a focused light beam from the focused light beam generator to provide alignment of the focused light beam receptor relative to a centerline of the vehicle. A method of aligning a focused light beam receptor, focused light beam generator and a movable alignment stand relative to a centerline of a vehicle is also provided.

A lens apparatus includes an imaging optical system includes an imaging optical system including a plurality of lenses, a first holding member holding at least a first lens closest to an object among the plurality of lenses, and configured to move in an optical axis direction of the imaging optical system to perform focusing, a barrel member provided on an outside of the first holding member, and a control unit configured to control a driving unit configured to move the first holding member. When focus is at infinity, an edge surface on an object side of the barrel member is positioned on the object side of a surface vertex of an object-side surface of the first lens. When focus is at infinity, an edge surface on the object side of the control unit is positioned on the object side of the surface vertex.

A laser device includes a light source part; an optical path adjustment part; a light distribution part that splits a laser beam into a plurality of sub-beams to a substrate; a drive part that moves the light distribution part and adjusts relative positions between the light distribution part and the substrate; a sensing part; and a control part. The control part generates an image based on a signal sensed by the sensing part and measures an image contrast of the image. The control part records and compares a plurality of image contrasts according to the position of the light distribution part to determine an optimal position of the light distribution part.

An electromagnetic beam scanning system and corresponding method of use is provided. The system includes a motor, a reciprocating mechanism, and a focus optic. The motor is configured to generate a rotational movement. The reciprocating mechanism is operatively coupled with the motor and configured to convert the rotational movement to a reciprocating movement including a plurality of strokes along a first scanned axis. The reciprocating movement has a constant speed over a portion of at least one stroke of the plurality of strokes. The focus optic is operatively coupled to the reciprocating mechanism such that the focus optic moves experiences the reciprocating movement of the reciprocating mechanism. The focus optic is configured to focus an electromagnetic radiation (EMR) beam incident upon the focus optic to a focus along an optical axis substantially orthogonal to the first scanned axis.

An electromagnetic beam scanning system and corresponding method of use is provided. The system includes a motor, a reciprocating mechanism, and a focus optic. The motor is configured to generate a rotational movement. The reciprocating mechanism is operatively coupled with the motor and configured to convert the rotational movement to a reciprocating movement including a plurality of strokes along a first scanned axis. The reciprocating movement has a constant speed over a portion of at least one stroke of the plurality of strokes. The focus optic is operatively coupled to the reciprocating mechanism such that the focus optic moves experiences the reciprocating movement of the reciprocating mechanism. The focus optic is configured to focus an electromagnetic radiation (EMR) beam incident upon the focus optic to a focus along an optical axis substantially orthogonal to the first scanned axis.

A control apparatus (13) includes a data acquirer (13a) that acquires correction data indicating a relationship between a temperature difference between a temperature detected by a temperature detector (12) and a reference temperature, and a focus movement amount, and a focus controller (13b) that performs focus correction based on the temperature difference and the correction data to perform focus control, and the focus controller (13b) changes the focus correction depending on a drive state of a temperature changer (17) that changes a temperature.

An apparatus including a focused light beam receptor apparatus configured to be positioned proximate a first end of a vehicle, a focused light beam generator; and wherein the focused light beam receptor apparatus includes a focused light beam receiving surface for receiving a focused light beam from the focused light beam generator to provide alignment of the focused light beam receptor relative to a centerline of the vehicle. A method of aligning a focused light beam receptor, focused light beam generator and a movable alignment stand relative to a centerline of a vehicle is also provided.

An embodiment of the present invention enables an improvement in image resolution. A projection device (1) includes: a light source (11); a MEMS mirror (14) which reflects and two-dimensionally scans the laser beam emitted from the light source; and a free-form lens (15) which changes focusing properties of the laser beam reflected by the scanning section such that, after propagation of the laser beam to a screen (20) onto which the image is to be projected, a shape of the laser beam when viewed on the screen has a first width that is shorter than a second width of the shape, the first width being along a horizontal direction corresponding to a primary scanning direction in which the MEMS mirror scans the laser beam, the second width being along a vertical direction.

An electromagnetic beam scanning system and corresponding method of use is provided. The system includes a motor, a reciprocating mechanism, and a focus optic. The motor is configured to generate a rotational movement. The reciprocating mechanism is operatively coupled with the motor and configured to convert the rotational movement to a reciprocating movement including a plurality of strokes along a first scanned axis. The reciprocating movement has a constant speed over a portion of at least one stroke of the plurality of strokes. The focus optic is operatively coupled to the reciprocating mechanism such that the focus optic moves experiences the reciprocating movement of the reciprocating mechanism. The focus optic is configured to focus an electromagnetic radiation (EMR) beam incident upon the focus optic to a focus along an optical axis substantially orthogonal to the first scanned axis.

An embodiment of the present invention enables an improvement in image resolution. A projection device (1) includes: a light source (11); a MEMS mirror (14) which reflects and two-dimensionally scans the laser beam emitted from the light source; and a free-form lens (15) which changes focusing properties of the laser beam reflected by the scanning section such that, after propagation of the laser beam to a screen (20) onto which the image is to be projected, a shape of the laser beam when viewed on the screen has a first width that is shorter than a second width of the shape, the first width being along a horizontal direction corresponding to a primary scanning direction in which the MEMS mirror scans the laser beam, the second width being along a vertical direction.