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US 5,708,748 AGranted
Target device for a laser
AssigneeTopcon Corporation
InventorsFumio Ohtomo, Kunihiro Hayashi
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AssigneeTopcon Corporation
InventorsFumio Ohtomo, Kunihiro Hayashi
Estimating the term…
The present invention relates to a target device for laser and particularly aims at providing a target device for laser provided with a plurality of fiber members, using at least one face as a diffusing surface and thereby capable of improving visibility at a light place. In the present invention, a diffusing member transmits and diffuses visible light, a transmitting plate transmits the visible light, and an optical member is formed on at least one face side of the transmitting plate, the optical member comprising a plurality of fiber members which are arranged so that their longitudinal directions are approximately parallel to each other. Consequently, the passing position of light can be represented on a diffusing plate, and the light which has passed through the target device is influenced by diffusion and becomes no longer glaring, whereby the visibility can be improved even at a light place.
A target device for a beam of laser light having an axis of propagation, comprising a row of substantially parallel elongated optical members, each optical member having an axis of elongation and an outer surface shaped to refract light in a direction generally perpendicular to the axis of elongation, and the axis of elongation being transverse to the axis of propagation of the beam of laser light, whereby the beam of laser light, on passing through one or more optical members, is expanded in a direction generally perpendicular to both the axis of elongation and the axis of propagation.
Dependencies are inferred from the claim text.