Disclosure of Invention
The invention aims to provide an illumination optical fiber and an illumination device, which can improve the light emitting angle of the far end of the illumination optical fiber.
In a first aspect, the present invention provides an illumination fiber comprising a tapered tail portion and a tapered middle portion, a distal end of the tapered middle portion integrally connected to a proximal end of the tapered tail portion;
the diameters of the tapered tail part and the tapered middle part gradually decrease from the proximal end of the illumination optical fiber to the distal end direction, and the taper degree of the tapered tail part is larger than that of the tapered middle part.
In an alternative embodiment, the taper of the tapered tail ranges from 1 ° to 8 °;
And/or the taper of the tapered middle part is in the range of 0-0.1 degrees.
In an alternative embodiment, the length of the tapered middle portion is less than 200mm;
And/or the length of the tapered tail part is in the range of 1mm-3mm.
In an alternative embodiment, the tapered middle portion is provided with a side exit hole through the outer cladding of the tapered middle portion such that both the side exit hole of the outer cladding of the tapered middle portion and the distal opening of the tapered tail portion exit.
In an alternative embodiment, the side light exit holes are circular holes;
Or the side light outlet holes are annular holes circumferentially arranged around the conical middle part;
Or the side light emergent holes are strip-shaped holes extending along the axial direction of the conical middle part.
In an alternative embodiment, the area of the core in the middle of the cone corresponding to the side light exit hole is roughened to increase the exit angle.
In an alternative embodiment, the number of side light exit holes is a plurality.
In an alternative embodiment, a plurality of side light emitting holes are arranged at intervals along the axial direction of the conical middle part;
And/or, a plurality of side light emitting holes are arranged at intervals along the circumference of the conical middle part.
In an alternative embodiment, the outer side of the outer cladding of the conical middle part is provided with a jacket, and the jacket is provided with a light hole penetrating through the jacket;
the outer sleeve can rotate relative to the conical middle part so that the overlapping degree of the light holes and the side light emitting holes is changed.
In a second aspect, the present invention provides an illumination device comprising an illumination fiber according to any one of the preceding embodiments.
The embodiment of the invention has the beneficial effects that:
the illuminating optical fiber comprises a conical tail part and a conical middle part, wherein the distal end of the conical middle part is integrally connected with the proximal end of the conical tail part, the diameters of the conical tail part and the conical middle part gradually decrease from the proximal end of the illuminating optical fiber to the distal end direction, and the taper of the conical tail part is larger than that of the conical middle part.
Through setting up to the toper structure in the middle part of illumination optic fibre, toper middle part promptly, can be to more light transmission to toper afterbody to increase beam luminous angle, further, through setting up to the toper structure in the distal end part of illumination optic fibre, toper afterbody promptly, and the tapering is bigger, can further reduce the bore of light-emitting end, and then enlarge exit angle.
In a second aspect, the invention provides an illumination device comprising an illumination fiber according to any of the preceding embodiments. Because the illumination device provided by the invention refers to the illumination optical fiber, the illumination device provided by the invention also has the advantage of the illumination optical fiber.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a graph of the radiation intensity profile of a prior art illumination fiber;
FIG. 2 is an outgoing light distribution diagram of a conventional illumination fiber;
FIG. 3 is a schematic view of an illumination fiber according to embodiment 1 of the present invention;
FIG. 4 is a graph showing the radiation intensity distribution of an illumination fiber according to embodiment 1 of the present invention;
FIG. 5 is a graph showing the distribution of the outgoing light of the illumination fiber according to embodiment 1 of the present invention;
FIG. 6 is a schematic view of an illumination fiber according to embodiment 2 of the present invention;
FIG. 7 is a graph showing the radiation intensity distribution of an illumination fiber according to embodiment 2 of the present invention;
FIG. 8 is a graph showing the distribution of the outgoing light of the illumination fiber according to embodiment 2 of the present invention;
FIG. 9 is a graph showing the radiation intensity distribution of the illumination fiber according to example 2 after the core of the illumination fiber is roughened;
FIG. 10 is a graph showing the distribution of the emitted light after roughening the core of the illumination fiber according to embodiment 2 of the present invention;
FIG. 11 is a schematic view of an illumination fiber according to embodiment 3 of the present invention;
FIG. 12 is a graph showing the radiation intensity distribution of an illumination fiber according to embodiment 3 of the present invention;
FIG. 13 is a graph showing the distribution of the outgoing light of the illumination fiber according to embodiment 3 of the present invention;
FIG. 14 is a graph showing the radiation intensity distribution of the illumination fiber according to example 3 after the core roughening;
FIG. 15 is a graph showing the distribution of the emitted light after roughening the core of the illumination fiber according to example 3 of the present invention;
FIG. 16 is a schematic view of an illumination fiber according to embodiment 4 of the present invention;
fig. 17 is a schematic diagram of the rotation of the light holes and the side light emitting holes in the outer jacket of the illumination fiber provided in embodiment 5 from completely non-overlapping to partially overlapping to completely overlapping.
The icons comprise a 1-conical middle part, a 2-conical tail part, a 3-annular hole, a 4-strip hole, a 5-round hole, a 6-light-transmitting hole, a 7-side light-emitting hole and an 8-coat.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The illumination optical fiber provided by the invention is used for transmitting light and can be applied to ophthalmic superemulsion glass cutting products. For convenience of description, in this embodiment, a side close to the operator is a proximal end, and a side far away from the operator is a distal end.
As shown in fig. 3, the illumination fiber includes a tapered tail portion 2 and a tapered middle portion 1. After entering the illumination optical fiber, the light sequentially passes through the conical middle part 1 and the conical tail part 2 and then is emitted from the distal end of the conical tail part 2.
The distal end of the tapered middle part 1 is integrally connected with the proximal end of the tapered tail part 2, and can be integrally tapered into an integral optical fiber structure. The tapered arrangement of the tapered middle part 1 ensures that the luminous flux entering the optical fiber is enlarged on the basis of ensuring that the caliber of an incident end is larger, the illumination brightness is increased, the caliber of the far end of the tapered tail part 2 is thinner, a thinner needle head can be entered, and the process difficulty is reduced.
From the proximal end of the illumination fiber to the distal end, the diameters of the tapered tail portion 2 and the tapered middle portion 1 gradually decrease, and the taper of the tapered tail portion 2 is larger than that of the tapered middle portion 1.
As shown in fig. 3-5, the taper of the tapered middle part 1 is in the range of 0-0.1 degrees, the tapered length is smaller than 200mm, more light can be transmitted to the tapered tail part 2, and the light emitting angle of the light beam is increased. The taper of the tapered tail part 2 has a taper range of 1-8 degrees, and the taper length has a taper range of 1-3 mm, so that the caliber of the light emitting end can be further reduced, and the emergent angle is further enlarged.
Example 2
As shown in fig. 6, the difference from embodiment 1 is that the tapered middle part 1 is provided with a side light exit hole penetrating through the outer cladding of the tapered middle part 1, so that the side light exit hole of the outer cladding of the tapered middle part 1 and the distal end opening of the tapered tail part 2 all emit light, thereby improving the illumination angle of the optical fiber.
The side light outlet holes may be provided in a range of 1mm-5mm from the proximal end of the tapered tail portion 2.
As shown in fig. 6 to 8, in the present embodiment, the side light emitting holes may be annular holes 3 circumferentially arranged around the tapered middle portion 1, thereby increasing the circumferential illumination range.
The number of the side light emitting holes may be plural, and the plural annular holes 3 are arranged at intervals along the axial direction.
Further, when the side light outlet hole is processed, after the surface cladding of the conical middle part 1 is removed, the optical fiber core at the side light outlet hole is roughened, so that a part of optical fibers can be transmitted and scattered from the side surface, the light outlet angle of the optical fibers is more than 180 degrees, and the light outlet effect of 360 degrees is achieved, as shown in fig. 9 and 10.
Example 3
As shown in fig. 11, the difference from embodiment 2 is that in the present embodiment, the side light exit holes are bar-shaped holes 4 extending axially along the tapered middle portion 1, thereby increasing the axial illumination range.
The number of the side light emitting holes may be plural. The plurality of strip-shaped holes 4 are arranged at intervals in the circumferential direction as shown in fig. 11 to 13.
Further, during processing, after the surface cladding of the conical middle part 1 is removed, the optical fiber core at the side light outlet hole is roughened, so that a part of optical fiber can be transmitted and scattered from the side surface, the light outlet angle of the optical fiber is more than 180 degrees, and the light outlet effect of 360 degrees is achieved, as shown in fig. 14 and 15.
Example 4
As shown in fig. 16, the difference from embodiment 2 is that in the present embodiment, the side light emitting holes may be circular holes 5, thereby achieving a concentrated illumination effect.
The number of the side light emitting holes may be plural. The plurality of circular holes 5 are distributed at intervals along the circumferential direction of the conical middle part 1 to form an annular structure, and the plurality of annular structures are distributed at intervals along the axial direction of the conical middle part 1, so that a three-dimensional net structure is formed.
Example 5
As shown in fig. 17, the difference from embodiment 3 or embodiment 4 is that the outer side of the outer cladding of the tapered middle part 1 is provided with a jacket 8, the jacket 8 is provided with light holes 6 penetrating through the jacket 8, and the shape and area of the light holes 6 are consistent with the shape and area of the side light emitting holes 7. The outer sleeve 8 can rotate relative to the conical middle part 1, so that the overlapping degree of the light transmission hole 6 and the side light emitting hole 7 is changed, when the light transmission hole is not overlapped at all, the side light is not emitted, the far-end light emitting of the illumination optical fiber is the most opposite, the light emitting quantity of the side light is increased along with the increase of the overlapping degree, the far-end light emitting is reduced, when the light emitting quantity of the side light is the greatest, and an operator can adjust the overlapping according to the operation requirement.
The illumination device provided by the invention comprises an illumination optical fiber and a light source.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.