Abstract: A reduction ratio changing device, so-called DCRR, for a mechanical chain transmission system includes a toothing. The toothing of the DCRR includes a portion, so-called the helical portion, forming a toothed helix winding around an axis of revolution of the DCRR and a portion, so-called the circular portion, forming a toothed planar circle whose centre coincides with the axis of revolution of the DCRR. The helical portion of the toothing extends from a distal end of the toothing of the DCRR towards the circular portion of the toothing. The circular portion of the toothing of the DCRR forms a proximal end of the toothing of the DCRR.

Abstract: Optical systems and methods for operation thereof are disclosed. A delimited zone is defined as a function of distance from the optical system based on a VAC limit, the delimited zone having at least one distance threshold. A virtual distance of a virtual depth plane from the optical system at which a virtual object is to be displayed is determined. It is determined whether the virtual distance is outside the delimited zone by comparing the virtual distance to the at least one distance threshold. A collimated pixel beam associated with the virtual object is generated by a projector of the optical system. The collimated pixel beam is modified to generate a modified pixel beam if the virtual distance is outside the delimited zone. Modifying the collimated pixel beam includes converging the collimated pixel beam and/or reducing a diameter of the collimated pixel beam.

Abstract: Optical systems and methods for operation thereof are disclosed. A delimited zone is defined as a function of distance from the optical system based on a VAC limit, the delimited zone having at least one distance threshold. A virtual distance of a virtual depth plane from the optical system at which a virtual object is to be displayed is determined. It is determined whether the virtual distance is outside the delimited zone by comparing the virtual distance to the at least one distance threshold. A collimated pixel beam associated with the virtual object is generated by a projector of the optical system. The collimated pixel beam is modified to generate a modified pixel beam if the virtual distance is outside the delimited zone. Modifying the collimated pixel beam includes converging the collimated pixel beam and/or reducing a diameter of the collimated pixel beam.

Abstract: In various embodiments, a high pressure discharge lamp is provided. The high pressure discharge lamp may include a lamp axis, and a two-ended discharge vessel that surrounds a discharge volume, electrodes extending into the discharge volume enveloped by the discharge vessel, and a fill that includes metal halides being accommodated in the discharge volume, the discharge vessel being surrounded by an outer bulb with a base at one end and being held therein by a frame, wherein the frame comprises a short supply lead and a long supply lead, the long supply lead comprising two straight conductors with a winding part therebetween, the winding part executing at most 1.25 turns about the discharge vessel.

Abstract: A high-pressure discharge lamp with a starting aid has a discharge vessel, the discharge vessel being held in an outer bulb by means of a frame. A UV enhancer which is fixed directly by means of the frame is used as the starting aid.

Abstract: In various embodiments, a high pressure discharge lamp is provided. The high pressure discharge lamp may include a lamp axis, and a two-ended discharge vessel that surrounds a discharge volume, electrodes extending into the discharge volume enveloped by the discharge vessel, and a fill that includes metal halides being accommodated in the discharge volume, the discharge vessel being surrounded by an outer bulb with a base at one end and being held therein by a frame, wherein the frame comprises a short supply lead and a long supply lead, the long supply lead comprising two straight conductors with a winding part therebetween, the winding part executing at most 1.25 turns about the discharge vessel.