A light guide pointer and a light emitting pointer device which can reduce luminance unevenness at a light emitting face are provided. A lower face of a main pointer portion includes a separating face extending away from a light emitting face, thus light reflected by a front inclined portion of a light control space, that is not likely to travel in a direction away from the light emitting face, is not likely to reach to a corner which is a boundary between the separating face and a recessed portion. Consequently, light is not likely to be reflected by the corner between the separating face and the recessed portion, thereby preventing luminance to be partially high at the light emitting face and thereby reducing luminance unevenness.

Systems and methods are disclosed and include a needle control module that includes a processor configured to execute instructions stored in a nontransitory computer-readable medium, a motor driver circuit in communication with the needle control module, the motor driver circuit controlling a stepper motor attached to a needle, and a housing enclosing the needle control module, the motor driver circuit, and the stepper motor, the housing being physically attached to a display of a vehicle. In response to the needle control module receiving a signal representing vehicle state information, the needle control module is configured to instruct the motor driver circuit to control movement of the stepper motor and adjust a position of the needle based on the signal.

A light emitting pointer device which can reduce luminance unevenness at a light emitting face is provided. An annular rib is provided between a first holding portion holding an emission shaft and a second holding portion holding a light entrance shaft and the annular rib thereby covers a corner of the light entrance shaft. As a result, the light is not likely to enter a pointer body from the corner of the light entrance shaft, thereby reducing stray light and reducing luminance unevenness. An upper face of the annular rib on the light entrance shaft side has a radius of curvature that is greater than a radius of curvature of the corner of the light entrance shaft and is tapered, thus the corner can be easily covered with a space between the light entrance shaft and the annular rib.

In a light guide pointer, a vertex portion of a light control space is located on a sub-pointer portion side with respect to a center axis of a light entrance shaft, providing appropriate luminance balance between a main pointer portion and the sub-pointer portion. The light control space includes a circular arc portion, thereby broadening diffusion range of light that has passed through the light control space and preventing attenuation of light traveling along inclined portions. A center of the circular arc portion is located on the main pointer portion side with respect to the center axis, allowing strong light that has entered the light control space from the vertex portion to be diffused more. Local focusing and/or attenuation of light can be prevented, while providing appropriate luminance balance between the main pointer portion side and the sub-pointer portion side, thereby reducing luminance unevenness at the light emitting face.

Tip-to-center illumination of a gauge pointer is provided by an elongated pointer having a hub the bottom surface of which comprises prism-shaped protuberances the surfaces of which receive light from a light source. The gauge pointer, hub and protuberances are a unitary structure made of light-conductive material.

An illuminable pointer assembly for an instrument panel includes a transparent or translucent base, a transparent or translucent pointer blade, and a hub mounted on the base and supporting the pointer blade. The assembly is miniaturized or capable of being miniaturized by integrating reflectors into a lower surface of the pointer blade to internally reflect light propagated upwardly through the base in a lateral direction to uniformly illuminate the pointer blade.

Light emitted from laser light source is divided by prism into two light flux and light flux corresponding to light emitted from slope and slope. Light flux and light flux are diffused by diffusion plate and diffusion plate to become light flux and light flux. By overlapping light flux and light flux, a radiation distribution with a wide angle and high light intensity can be obtained.

A pointer for an instrument panel. The pointer includes a base. A shaft extends from the base. A blade extends from the base to reference indications on the instrument cluster. A diffuser is attached to the base over the shaft. The diffuser is configured to scatter light along a length of the blade and to a panel arranged over the base to illuminate the panel.

A display hand for a portable object including an indication by the display hand, inside which is housed a rechargeable electrical energy source. The display hand includes at least one solar cell, the electrical energy source being connected to the display hand to be recharged.

A laser point projecting device is described that includes a light source assembly that projects a first positioning point and a second positioning point respectively along two directions of a straight line. The laser point projecting device can include a housing part and a body part, wherein the housing part is sleeved on the periphery of a body part, and the body part and the housing part are displaceable relative to each other. When the body part displaces to a first position along the direction of projecting the first positioning point, the light source assembly is switched off; when the body part displaces to a second position along the direction of projecting the second positioning point, the light source assembly is activated. The housing part is provided with at least one opening at the end along the direction of projecting the second positioning point, a hollow space is formed between the end of the housing part close to the first positioning point and the body part, and the opening communicates the hollow space with the external space. In embodiments, this enables a user to observe the positions of both the two positioning points of the laser point projecting device during operation, thereby facilitating positioning.