An aiming device for an image acquisition apparatus includes light emitting means and a light guide arranged for receiving a luminous radiation generated by the light emitting means and for providing reference image means in an aiming zone, the light guide including consecutive portions of light gui
An aiming device for an image acquisition apparatus includes light emitting means and a light guide arranged for receiving a luminous radiation generated by the light emitting means and for providing reference image means in an aiming zone, the light guide including consecutive portions of light guide defining preferential directions of passage for the luminous radiation, each portion of light guide being inclined with respect to an adjacent portion of light guide.
대표청구항▼
1. An aiming device for an image acquisition apparatus, comprising a light source and a light guide arranged for receiving a luminous radiation generated by said light source and for providing reference images in an aiming wherein said light guide comprises consecutive portions of light guide defini
1. An aiming device for an image acquisition apparatus, comprising a light source and a light guide arranged for receiving a luminous radiation generated by said light source and for providing reference images in an aiming wherein said light guide comprises consecutive portions of light guide defining preferential directions of passage of said luminous radiation, each portion of light guide being inclined with respect to an adjacent portion of light guide, wherein said aiming device further comprises a plurality of reflection surfaces, individual ones of the reflection surfaces being interposed between respective pairs of consecutive portions of light guide. 2. The aiming device according to claim 1, wherein each of said reflection surfaces is so shaped as to direct a beam of said luminous radiation coming from a portion of light guide positioned upstream of said reflection surface along a further portion of light guide positioned downstream of said reflection surface. 3. The aiming device according to claim 1, wherein said portions of light guide are substantially rectilinear and each of said reflection surfaces comprises a planar surface inclined by 45° with respect to longitudinal axes of portions of light guide between which said planar surface is interposed. 4. The aiming device according to claim 1, further comprising a collimation lens interposed between said light source and said light guide for collimating said luminous radiation. 5. The aiming device according to claim 4, wherein said collimation lens is fixed to an entrance end of said light guide. 6. The aiming device according to claim 1, wherein a diaphragm is provided upstream of said light guide. 7. The aiming device according to claim 1, wherein said light guide is made of a material which is transparent to said luminous radiation, said luminous radiation being directed along said portions of light guide by means of total internal reflection. 8. The aiming device according to claim 7, wherein said light guide is made of polycarbonate. 9. The aiming device according to claim 1, wherein said light guide comprises a plurality of exit surfaces through which beams of said luminous radiation intended to form said reference images are emitted and further reflection surfaces cooperating with said exit surfaces. 10. The aiming device according to claim 9, wherein said further reflection surfaces and said exit surfaces are mutually oriented in such a way that said beams comes out of said light guide substantially perpendicular with respect to said exit surfaces. 11. The aiming device according to claim 1, wherein said light guide is a hollow light guide provided with lateral walls made of a material that is not transparent to said luminous radiation. 12. The aiming device according to claim 1, wherein said light guide comprises optically inactive parts arranged to improve mechanical properties of said light guide. 13. The aiming device according to claim 1, wherein said light guide comprises a plurality of branches each arranged to generate a reference image. 14. The aiming device according to claim 13, wherein said light guide comprises four branches so shaped as to generate reference images defining vertices of a quadrilateral. 15. The aiming device according to claim 14, wherein said four branches are shaped so that four luminous beams coming out of said four branches intersect each other at a point situated on an optical axis of said image acquisition apparatus. 16. The aiming device according to claim 15, wherein said optical axis is the optical axis of a receiving objective of said image acquisition apparatus. 17. The aiming device according to claim 14, wherein said four branches are shaped so that four luminous beams coming out of said four branches have no point of intersection. 18. The aiming device according to claim 14, wherein said four branches are shaped so that four luminous beams coming out of said four branches intersect each other in pairs. 19. The aiming device according to claim 14, further comprising a further branch so shaped as to generate a further reference image at a central zone of said quadrilateral. 20. The aiming device according to claim 19, wherein said further branch is shaped so that a further laser beam coming out of said further branch intersects an optical axis of said image acquisition apparatus. 21. The aiming device according to claim 13, wherein said branches have a rectangular or square cross-section. 22. The aiming device according to claim 1, wherein a tubular element is interposed between said light source and said light guide, said luminous radiation generated by said light source reaching said light guide through said tubular element. 23. The aiming device according to claim 22, wherein said tubular element comprises a first end arranged for receiving an emission portion of said light source and a further end arranged for receiving an entrance zone of said light guide through which said luminous radiation enters said light guide. 24. The aiming device according to claim 1, wherein said light source comprises a single laser source (2). 25. The aiming device according to claim 1, wherein a beam shaper is provided upstream of said light guide. 26. An aiming device for an image acquisition apparatus, comprising a light source and a light guide arranged for receiving a luminous radiation generated by said light source and for providing a plurality of reference images in an aiming zone, wherein said light guide comprises at least three branches each of which emits a luminous beam arranged for generating a corresponding reference image of said plurality of reference images, wherein said light guide comprises four branches so shaped as to generate reference images defining vertices of a quadrilateral. 27. The aiming device according to claim 26, wherein said four branches are shaped so that four luminous beams coming out of said four branches intersect each other at a point situated on an optical axis of said image acquisition apparatus. 28. The aiming device according to claim 26, wherein said four branches are shaped so that four luminous beams coming out of said four branches have no point of intersection. 29. The aiming device according to claim 26, wherein said four branches are shaped so that four luminous beams coming out of said four branches intersect each other in pairs. 30. The aiming device according to claim 26, further comprising a further branch so shaped as to generate a further reference image at a central zone of said quadrilateral. 31. The aiming device according to claim 30, wherein said further branch is shaped so that a further laser beam coining out of said further branch intersects an optical axis of said image acquisition apparatus. 32. The aiming device according to claim 31, wherein said optical axis is the optical axis of a receiving objective of said image acquisition apparatus. 33. The aiming device according to claim 26, further comprising a collimation lens interposed between said light source and said light guide for collimating said luminous radiation. 34. The aiming device according to claim 26, wherein a diaphragm is provided upstream of said light guide. 35. The aiming device according to claim 26, wherein said light guide is made of material transparent to said luminous radiation, said luminous radiation being directed along said at least three branches by means of total internal reflection. 36. The aiming device according to claim 26, wherein said light guide comprises a plurality of exit surfaces through which beams of said luminous radiation intended to form said reference images is emitted and further reflection surfaces cooperating with said exit surfaces. 37. The aiming device according to claim 36, wherein said further reflection surfaces and said exit surfaces are mutually oriented in such a way that said beams comes out of said light guide substantially perpendicular to said exit surfaces. 38. The aiming device according to claim 26, wherein said light guide comprises optically inactive parts arranged for improving mechanical properties of said light guide. 39. The aiming device according to claim 26, wherein a tubular element is interposed between said light source and said light guide, said luminous radiation generated by said light source reaching said light guide through said tubular element. 40. The aiming device according to claim 26, wherein said light source comprises a single laser source. 41. The aiming device according to claim 26, wherein a beam shaper is provided upstream of said light guide. 42. An image acquisition apparatus comprising an aiming device according to claim 1. 43. The image acquisition apparatus according to claim 42, wherein said apparatus is an apparatus for reading optical information. 44. The image acquisition apparatus according to claim 43, wherein said apparatus is a portable apparatus. 45. The image acquisition apparatus according to claim 43, wherein said apparatus is a fixed apparatus. 46. An aiming device for an image acquisition apparatus, comprising a light source and a light guide arranged for receiving a luminous radiation generated by said light source and for providing reference images in an aiming zone, wherein said light guide comprises consecutive portions of light guide defining preferential directions of passage of said luminous radiation, each portion of light guide being inclined with respect to an adjacent portion of light guide, wherein said light guide comprises a plurality of branches each arranged to generate a reference image. 47. An aiming device for an image acquisition apparatus, comprising a light source and a light guide arranged for receiving a luminous radiation generated by said light source and for providing reference images in an aiming zone, wherein said light guide comprises consecutive portions of light guide defining preferential directions of passage of said luminous radiation, each portion of light guide being inclined with respect to an adjacent portion of light guide, wherein said aiming device further comprises a plurality of reflection surfaces, individual ones of the reflection surfaces being interposed between respective pairs of consecutive portions of light guide, said aiming device further comprising a collimation lens interposed between said light source and said light guide for collimating said luminous radiation; said collimated luminous radiation traversing each branch of light guide remaining substantially parallel to a longitudinal axis of the branch.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (1)
Canini,Federico; Palestini,Valeria, Optical device and a method for aiming and visually indicating a reading area.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.