초록 ▼

A light projection apparatus for projecting an illuminated line onto a surface which comprises a light source for emitting a light beam and a light beam deflection lens which is adapted to receive the emitted light beam and project a work light beam which will be visible as a straight line on the su

A light projection apparatus for projecting an illuminated line onto a surface which comprises a light source for emitting a light beam and a light beam deflection lens which is adapted to receive the emitted light beam and project a work light beam which will be visible as a straight line on the surface, the light deflection lens is configured so that the visible line on the surface is of generally equal illumination along its entire length. The light beam deflection lens preferably comprises an optical lens which is adapted to refract and reflect the emitted light beam.

대표청구항 ▼

[ I claim:] [1.] A light projection apparatus for projecting an illuminated line onto a surface, the apparatus comprising:a laser source for emitting a laser beam; anda hollow lens arranged to receive the emitted laser beam, the hollow lens projecting a working laser beam having a fanned planar conf

[ I claim:] [1.] A light projection apparatus for projecting an illuminated line onto a surface, the apparatus comprising:a laser source for emitting a laser beam; anda hollow lens arranged to receive the emitted laser beam, the hollow lens projecting a working laser beam having a fanned planar configuration visible as a straight line projected obliquely onto the surface to form the illuminated line extending from a near position close to the hollow lens to a far position remote from the hollow lens, whereinthe hollow lens has internal and external surfaces, the arrangement of the internal and external surfaces being such that the hollow lens both refracts and reflects the emitted laser beam to produce the working laser beam which has higher light intensity in portions of the working laser beam which are projected onto the surface towards the far position than in portions of the working laser beam which are projected onto the surface towards the near position, whereby the illuminated line has generally equal illumination along its length between the near and far positions.