A female optical receiving device used to receive an optical guidewire and connect guidewire internal optical fiber to an external relaying optical cable is also provided.

Each LED (lOa-lOc) is provided with an optical conveyor means of its own.

The optical guide head of such an endoscopic device is formed from an optical rod with a refractive index gradient.

The incidence angle is determined by the numerical aperture of the optical guide element.

Each data track is associated with one of the optical guidelines (20) and may include an identification optically coded therein.

An optical monitor device and method are presented aimed at providing low-loss monitoring of an optical signal confined in an optical guiding structure.

  The individual optical guide sheets (46a - 46f) include incident portions (46a1 - 46f1) for introducing the beams from the individual light sources (50a, 50b and 50c) into the optical guide sheets.

guiding by cross wire viewing

There was a good aspect to manual steering though on trucks.

The focal point of the optical element on a reflective element side is set to be on an end face of the optical guide element.

An inner surface of each curved portion is positioned towards the light guide plate (11).

Provided is a lighting apparatus, wherein a light guiding plate can be made to be thinner without decreasing the light-entering rate of light radiated from a light source into the light guiding plate.

Steering the vehicle (1) is derived from the optical scanning of the guideline (6) situated on or in the surface of the road (4) by an optical guideline imaging device (3.1) located on the vehicle (1).

The light guide plate is greatly improved in efficiency, while its production cost is significantly reduced.

The optical guide element is placed so that the incidence angle of the light emitted onto the reflective face from the optical light element satisfies almost the total reflection.