Optical lens driving apparatus
Technical field
The present invention relates to a kind of optical lens driving apparatus, be applied to the driving of the motion group of zoom lens, particularly a kind of optical lens driving apparatus that drives several motion groups with single motor.
Background technology
Under general situation, powerful zoom lens all adopts the above optical design of four groups, and it has two motion groups at least.But because have the zoom lens of two motion groups, its design limit is comparatively harsh, so optical design degree of difficulty height, and optical quality is difficult to promote, on the other hand, when the groups of motion that increase zoom lens are counted, though can improve the degree of freedom of optical design, and the enhancement optical quality, increased the degree of difficulty and the cost of mechanism design also.Traditionally, four group formula zoom lens with two motion groups adopts two motors to drive the motion of a zoom group and a focusing group respectively, four group formula zoom lens with three motion groups then uses the motion of two zoom groups of druum cam control, again with a focusing of motor driven group.Above-mentioned project organization complexity, and degree of difficulty and cost that part is made are all high.
And the zoom lens of several different forms that disclosed at present, be found in U.S. Patent Publication No. No. 4636041, No. 4948235, No. 5140468, No. 5298933, No. 5570149, No. 5627683, No. 5636062, No. 5689739, No. 5708535, No. 5790908, and No. 6031998 patent case below explains at the technology of above-mentioned part zoom lens.
What disclosed in No. 5140468 patent case of U.S. Patent Publication No. is four group formula zoom lens, and have three motion groups, it controls the relative position of three motion groups with two plane cams of two motor driven, but because the direction of motion of its plane cam is vertical with optical axis, so have bulkyly, and can't reach the purpose of miniaturization.
What disclosed in No. 5298933 patent case of U.S. Patent Publication No. is four group formula zoom lens, and first group and the 3rd group are fixing group, and second group and four group group are motion group, and adopt a motor driven respectively, thereby it has advantage simple in structure, that cost is low, yet its second group and the employed slide rail of four group group are different, and also have the shortcoming of strict optical design condition.
What disclosed in No. 5627683 patent case of U.S. Patent Publication No. is four group formula zoom lens, and each group is all motion group, but it controls the motion of each motion group with cylindrical cam tube or screw thread, so the high shortcoming of complex structure cost of manufacture is arranged.
What disclosed in No. 5636062 patent case of U.S. Patent Publication No. is four group formula zoom lens, and it adopts connecting rod to drive two groups in the lump.
What disclosed in No. 5689739 patent case of U.S. Patent Publication No. is four group formula zoom lens, because the guide rail of the driven object that it adopted has given shape, so can't reach the purpose of miniaturization.
What disclosed in No. 5708535 patent case of U.S. Patent Publication No. is four group formula zoom lens, and first group and the 3rd group are fixing group, and second group and four group group are motion group, and adopt a motor driven respectively, thereby it has advantage simple in structure, that cost is low, yet its second group and the employed slide rail of four group group are different.
What disclosed in No. 6031998 patent case of U.S. Patent Publication No. is four group formula zoom lens because the driven object that it adopted is a cylinder, and on cylinder the processing and fabricating guide rail, be what quite be difficult for.
Summary of the invention
In view of above problem, fundamental purpose of the present invention is to provide a kind of optical lens driving apparatus, to reach low manufacturing cost, and the purpose of raising optical design degree of freedom and quality, it is by the mode of interlock, make motor driven first group, and via other assembly interlock second group, even the 3rd group, and but the relative distance between second group and the 3rd group each and first group changes Be Controlled, thereby the present invention also can reach the optical benefits of the four group formula zoom lens with three motion groups under the type of drive that adopts four group formula zoom lens.
Therefore, for achieving the above object, disclosed a kind of optical lens driving apparatus, include first group, second group, guide rod, pilot pin, driven member and guiding piece, wherein first group is in order to be provided with one first set of contact lenses, second group is in order to be provided with one second set of contact lenses, guide rod is arranged in first group and second group, first group and second group are moved along guide rod, pilot pin is arranged at second group, driven member offers the guide groove of corresponding pilot pin, and have directing pin, and guiding piece one end is arranged at first group, and offer the guide rail of corresponding directing pin, with in first group when guide rod moves, guide rail by guiding piece drives the directing pin of driven member, driving pilot pin by driven member, and then second group is moved along guide rod, and the relative distance of first group and second group changes the track that is directed rail and limits, so can reach the purpose of low manufacturing cost and raising optical design degree of freedom and quality by the present invention.
According to the optical lens driving apparatus of above-mentioned conception, wherein guide rail is fluting.
According to the optical lens driving apparatus of above-mentioned conception, wherein this guide rail is a guide face.
Optical lens driving apparatus according to above-mentioned conception, wherein also include one the 3rd group in order to one the 3rd set of contact lenses to be set, one another pilot pin is arranged at the 3rd group, one another driven member offers this another guide groove that should another pilot pin, and has another directing pin, and this guiding piece offers another guide rail that should another directing pin, thereby be able to drive the 3rd group by this first group in the lump and move along this two guide rod, and the relative distance of this first group and the 3rd group changes and is limited by the track of this another guide rail.
Optical lens driving apparatus according to above-mentioned conception, wherein also include one the 3rd group in order to one the 3rd set of contact lenses to be set, one another guide groove is arranged at the 3rd group, one another driven member offers this another pilot pin that should another guide groove, and has another directing pin, and this guiding piece offers another guide rail that should another directing pin, thereby be able to drive the 3rd group by this first group in the lump and move along this two guide rod, and the relative distance of this first group and the 3rd group changes and is limited by the track of this another guide rail.
According to the optical lens driving apparatus of above-mentioned conception, wherein this another guide rail is fluting.
According to the optical lens driving apparatus of above-mentioned conception, wherein this another guide rail is a guide face.
The present invention also discloses a kind of optical lens driving apparatus, comprising: one first group, in order to one first set of contact lenses to be set; One second group is in order to be provided with one second set of contact lenses; Plural guide rod is arranged in this first group and this second group, and this first group and this second group are moved along this two guide rod; One pilot pin is arranged at this second group; One driven member offers a guide groove that should pilot pin, and has a guiding flank of tooth; One gear set is engaged in this guiding flank of tooth; An and tooth bar, one end is arranged at this first group, and has a tooth portion that is engaged in this gear set, with in this first group when this two guide rod moves, this tooth portion by this tooth bar drives this gear set, with this guiding flank of tooth by this this driven member of gear set drive, and makes this guide groove drive this pilot pin, and then this second group is moved along this two guide rod, and limited by the track of this guide groove by the relative distance variation of this first group and this second group.
Optical lens driving apparatus according to above-mentioned conception, wherein also include one the 3rd group in order to one the 3rd set of contact lenses to be set, one another pilot pin is arranged at the 3rd group, one another driven member offers this another guide groove that should another pilot pin, and has another guiding flank of tooth with the engagement of this gear set, thereby be able to drive the 3rd group by this first group in the lump and move along this two guide rod, and the relative distance of this first group and the 3rd group changes and is limited by the track of this another guide groove.
Optical lens driving apparatus according to above-mentioned conception, wherein also include one the 3rd group in order to one the 3rd set of contact lenses to be set, one another guide groove is arranged at the 3rd group, one another driven member offers this another pilot pin that should another guide groove, and has another guiding flank of tooth with the engagement of this gear set, thereby be able to drive the 3rd group by this first group in the lump and move along this two guide rod, and the relative distance of this first group and the 3rd group changes and is limited by the track of this another guide groove.
The present invention also discloses a kind of optical lens driving apparatus, comprising: one first group, in order to one first set of contact lenses to be set; One second group is in order to be provided with one second set of contact lenses; Plural guide rod is arranged in this first group and this second group, and this first group and this second group are moved along this two guide rod; One guide groove is arranged at this second group; One driven member offers a pilot pin that should guide groove, and has a directing pin; An and guiding piece, one end is arranged at this first group, and offer a guide rail that should directing pin, with in this first group when this two guide rod moves, drive this directing pin of this driven member by this guide rail of this guiding piece, driving this pilot pin, and then this second group is moved along this two guide rod, and the relative distance of this first group and this second group change and is limited by the track of this guide rail by this driven member.
According to the optical lens driving apparatus of above-mentioned conception, wherein this guide rail is fluting.
According to the optical lens driving apparatus of above-mentioned conception, wherein this guide rail is a guide face.
Optical lens driving apparatus according to above-mentioned conception, wherein also include one the 3rd group in order to one the 3rd set of contact lenses to be set, one another pilot pin is arranged at the 3rd group, one another driven member offers this another guide groove that should another pilot pin, and has another directing pin, and this guiding piece offers another guide rail that should another directing pin, thereby be able to drive the 3rd group by this first group in the lump and move along this two guide rod, and the relative distance of this first group and the 3rd group changes and is limited by the track of this another guide rail.
Optical lens driving apparatus according to above-mentioned conception, wherein also include one the 3rd group in order to one the 3rd set of contact lenses to be set, one another guide groove is arranged at the 3rd group, one another driven member offers this another pilot pin that should another guide groove, and has another directing pin, and this guiding piece offers another guide rail that should another directing pin, thereby be able to drive the 3rd group by this first group in the lump and move along this two guide rod, and the relative distance of this first group and the 3rd group changes and is limited by the track of this another guide rail.
According to the optical lens driving apparatus of above-mentioned conception, wherein this another guide rail is fluting.
According to the optical lens driving apparatus of above-mentioned conception, wherein this another guide rail is a guide face.
The present invention also discloses a kind of optical lens driving apparatus, comprising: one first group, in order to one first set of contact lenses to be set; One second group is in order to be provided with one second set of contact lenses; Plural guide rod is arranged in this first group and this second group, and this first group and this second group are moved along this two guide rod; One guide groove is arranged at this second group; One driven member offers a pilot pin that should guide groove, and has a guiding flank of tooth; One gear set is engaged in this guiding flank of tooth; An and tooth bar, one end is arranged at this first group, and has a tooth portion that is engaged in this gear set, with in this first group when this two guide rod moves, this tooth portion by this tooth bar drives this gear set, with this guiding flank of tooth by this this driven member of gear set drive, and makes this pilot pin drive this guide groove, and then this second group is moved along this two guide rod, and limited by the track of this pilot pin by the relative distance variation of this first group and this second group.
Optical lens driving apparatus according to above-mentioned conception, wherein also include one the 3rd group in order to one the 3rd set of contact lenses to be set, one another guide groove is arranged at the 3rd group, one another driven member offers this another pilot pin that should another guide groove, and has another guiding flank of tooth with the engagement of this gear set, thereby be able to drive the 3rd group by this first group in the lump and move along this two guide rod, and the relative distance of this first group and the 3rd group changes and is limited by the track of this another pilot pin.
Optical lens driving apparatus according to above-mentioned conception, wherein also include one the 3rd group in order to one the 3rd set of contact lenses to be set, one another pilot pin is arranged at the 3rd group, one another driven member offers this another guide groove that should another pilot pin, and has another guiding flank of tooth with the engagement of this gear set, thereby be able to drive the 3rd group by this first group in the lump and move along this two guide rod, and the relative distance of this first group and the 3rd group changes and is limited by the track of this another pilot pin.
Relevant characteristics and implementation of the present invention, now conjunction with figs. is shown as most preferred embodiment and is described in detail as follows.For making purpose of the present invention, structure, feature and function thereof there are further understanding, cooperate embodiment to be described in detail as follows.
Description of drawings
Fig. 1 is the three-dimensional combination figure of first embodiment of the invention;
Fig. 2 is the three-dimensional combination figure of second embodiment of the invention;
Fig. 3 is the three-dimensional combination figure of third embodiment of the invention;
Fig. 4 is the three-dimensional combination figure of fourth embodiment of the invention;
Fig. 5 is the three-dimensional combination figure of fifth embodiment of the invention; And
Fig. 6 is the three-dimensional combination figure of sixth embodiment of the invention.
20: the second groups of 11: the first set of contact lenses of 10: the first groups
Set of contact lenses 22 in 21: the second: pilot pin 30: guide rod
40: driven member 41: guide groove 42: directing pin
43: the guiding flank of tooth 50: guiding piece 51: guide rail
52: 61: the three set of contact lenses of 60: the three groups of another guide rail
62: another pilot pin 70: another driven member 71: another guide groove
72: another directing pin 73: another guides the flank of tooth 80: gear set
90: tooth bar 91: tooth portion
Embodiment
The three-dimensional combination figure of first embodiment of the invention as shown in Figure 1, disclosed a kind of optical lens driving apparatus, include first group 10, second group 20, guide rod 30, pilot pin 22, driven member 40, guiding piece 50, wherein first group 10 is in order to be provided with first set of contact lenses 11, second group 20 is in order to be provided with second set of contact lenses 21, guide rod 30 is arranged in first group 10 and second group 20, first group 10 and second group 20 are moved along guide rod 30, pilot pin 22 is arranged at second group 20, driven member 40 offers the guide groove 41 of corresponding pilot pin 22, and has a directing pin 42, one end of guiding piece 50 is arranged at first group 10, and offer the guide rail 51 of corresponding directing pin 42, and guide rail 51 is fluting as shown in the figure.
Therefore in use, can first group 10 be moved along guide rod 30 by the motor (not shown), drive the directing pin 42 of driven member 40 by the guide rail 51 of guiding piece 50, driven member 40 is fixed in the lens barrel (not shown) with pin, and can be the center rotation with the pin, to drive pilot pin 22 by driven member 40, and then second group 20 is moved along guide rod 30, and the relative distance of first group 10 and second group 20 changes the track that is directed rail 51 and limits, so can reach the purpose of low manufacturing cost and raising optical design degree of freedom and quality by first embodiment of the invention, and can drive several groups' actions by single motor.Certainly, in first embodiment, pilot pin 22 is also interchangeable with the design of guide groove 41, just makes pilot pin 22 be arranged at driven member 40, and guide groove 41 is arranged at second group 20, still can reach identical action.
The three-dimensional combination figure of second embodiment of the invention as shown in Figure 2, disclosed a kind of optical lens driving apparatus, include first group 10, second group 20, guide rod 30, pilot pin 22, driven member 40, guiding piece 50, wherein first group 10 is in order to be provided with first set of contact lenses 11, second group 20 is in order to be provided with second set of contact lenses 21, guide rod 30 is arranged in first group 10 and second group 20, first group 10 and second group 20 are moved along guide rod 30, pilot pin 22 is arranged at second group 20, driven member 40 offers the guide groove 41 of corresponding pilot pin 22, and has a directing pin 42, one end of guiding piece 50 is arranged at first group 10, and offer the guide rail 51 of corresponding directing pin 42, and guide rail 51 is a guide face as shown in the figure.
Therefore in use, can first group 10 be moved along guide rod 30 by the motor (not shown), drive the directing pin 42 of driven member 40 by the guide rail 51 of guiding piece 50, driven member 40 is fixed in lens barrel with pin through via hole 43, and can be that gyration is carried out at the center with the pin, to drive pilot pin 22 by driven member 40, and then second group 20 is moved along guide rod 30, and the relative distance of first group 10 and second group 20 changes the track that is directed rail 51 and limits, so can reach the purpose of low manufacturing cost and raising optical design degree of freedom and quality by second embodiment of the invention, and can drive several group's starts by single motor.Certainly, in a second embodiment, pilot pin 22 is also interchangeable with the design of guide groove 41, just makes pilot pin 22 be arranged at driven member 40, and guide groove 41 is arranged at second group 20, still can reach identical action.
And the three-dimensional combination figure of third embodiment of the invention as shown in Figure 3, disclosed a kind of optical lens driving apparatus, also include the 3rd group 60 in order to the 3rd set of contact lenses 61 to be set, another pilot pin 62 is arranged at the 3rd group 60, another driven member 70 offers another guide groove 71 of corresponding another pilot pin 62, and have another directing pin 72, and guiding piece 50 offers another guide rail 52 of corresponding another directing pin 72, and another guide rail 52 is fluting as shown in the figure.
Thereby by the motor (not shown) first group 10 is moved along guide rod 30 above-mentioned, drive the directing pin 42 of driven member 40 by the guide rail 51 of guiding piece 50, driven member 40 is fixed in the lens barrel (not shown) with pin, and can be the center rotation with the pin, to drive pilot pin 22 by driven member 40, and then second group 20 is moved along guide rod 30, and when the relative distance of first group 10 and second group 20 changes the track be directed rail 51 and limits, first group 10 is driven the 3rd group 60 in the lump and is moved along guide rod 30, and the variation of the relative distance of first group 10 and the 3rd group 60 is limited by the track of another guide rail 52, so can reach the purpose of low manufacturing cost and raising optical design degree of freedom and quality by third embodiment of the invention, and can drive several group's starts by single motor.The three-dimensional combination figure of fourth embodiment of the invention as shown in Figure 4, it is to make another guide rail 52 do the design of guide face.Certainly, in third and fourth embodiment, pilot pin 22 is also interchangeable with the design of guide groove 41, just make pilot pin 22 be arranged at driven member 40, guide groove 41 is arranged at second group 20, another pilot pin 62 is arranged at another driven member 70, and another guide groove 71 is arranged at another driven member 70 still can reach identical action.
As for the three-dimensional combination figure of fifth embodiment of the invention as shown in Figure 5, disclosed a kind of optical lens driving apparatus, include first group 10, second group 20, guide rod 30, pilot pin 22, driven member 40, gear set 80 and tooth bar 90, wherein first group 10 is in order to be provided with first set of contact lenses 11, second group 20 is in order to be provided with second set of contact lenses 21, guide rod 30 is arranged in first group 10 and second group 20, first group 10 and second group 20 are moved along guide rod 30, pilot pin 22 is arranged at second group 20, driven member 40 offers the guide groove 41 of corresponding pilot pin 22, and have the guiding flank of tooth 43, gear set 80 is engaged in the guiding flank of tooth 43, be arranged at first group 10 as for tooth bar 90 1 ends, and have the tooth portion 91 that is engaged in gear set 80.
Therefore in use, can first group 10 be moved along guide rod 30 by the motor (not shown), tooth portion 91 driven gear groups 80 by tooth bar 90, to drive the guiding flank of tooth 43 of driven member 40 by gear set 80, and make guide groove 41 drive pilot pin 22, and then second group 20 is moved along guide rod 30, and the relative distance variation by first group 10 and second group 20 is limited by the track of guide groove 41, so can reach the purpose of low manufacturing cost and raising optical design degree of freedom and quality by second embodiment of the invention, and can drive several group's starts by single motor.Certainly, in the 5th embodiment, pilot pin 22 is also interchangeable with the design of guide groove 41, just makes pilot pin 22 be arranged at driven member 40, and guide groove 41 is arranged at second group 20, still can reach identical action.
And the three-dimensional combination figure of sixth embodiment of the invention as shown in Figure 6, disclosed a kind of optical lens driving apparatus, also include the 3rd group 60 in order to the 3rd set of contact lenses 61 to be set, another pilot pin 62 is arranged at the 3rd group 60, another driven member 70 offers another guide groove 71 of corresponding another pilot pin 62, and has another guiding flank of tooth 73 with gear set 80 engagement, thereby be able to be moved along guide rod 30 by 10 drives the 3rd group 60 of first group in the lump, and the variation of the relative distance of first group 10 and the 3rd group 60 is limited by the track of another guide groove 71.
Thereby by the motor (not shown) first group 10 is moved along guide rod 30 above-mentioned, tooth portion 91 driven gear groups 80 by tooth bar 90, to drive the guiding flank of tooth 43 of driven member 40 by gear set 80, and make guide groove 41 drive pilot pin 22, and then second group 20 is moved along guide rod 30, and change when being limited by the track of guide groove 41 by the relative distance of first group 10 and second group 20, first group 10 is driven the 3rd group 60 in the lump and is moved along guide rod 30, and the variation of the relative distance of first group 10 and the 3rd group 60 is limited by the track of another guide groove 71, so can reach the purpose of low manufacturing cost and raising optical design degree of freedom and quality by third embodiment of the invention, and can drive several group's starts by single motor.Certainly, in the 6th embodiment, pilot pin 22 is also interchangeable with the design of guide groove 41, just make pilot pin 22 be arranged at driven member 40, guide groove 41 is arranged at second group 20, and another pilot pin 62 is arranged at another driven member 70, another guide groove 71 is arranged at another driven member 70, still can reach identical action.
Though the present invention discloses as above with aforesaid preferred embodiment; yet it is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, therefore scope of patent protection of the present invention must be looked this instructions claims and is as the criterion.