CN100340885C

CN100340885C - Small lens set

Info

Publication number: CN100340885C
Application number: CNB200410091752XA
Authority: CN
Inventors: 黄耀庆
Original assignee: Asia Optical Co Inc
Current assignee: Asia Optical Co Inc
Priority date: 2004-11-25
Filing date: 2004-11-25
Publication date: 2007-10-03
Anticipated expiration: 2024-11-25
Also published as: CN1779497A

Abstract

The present invention discloses a miniaturized lens set which comprises a casing unit, a lens unit arranged in the casing unit, and a motor for driving the lens unit to do reciprocating displacement along an axis line, wherein the lens unit is provided with a lens front seat, a lens back seat, a big diaphragm plate arranged between the lens front seat and the lens back seat, a small diaphragm plate pivoted at one side of the big diaphragm plate, a shutter plate pivoted at the other side of the big diaphragm plate, and two drivers for driving the small diaphragm plate and the shutter plate to generate action. Thereby, the present invention can generate the effects of volume reduction, structure simplification, easy assemble, etc. by means of the integral collocation of the lens unit.

Description

The miniaturization lens group

Technical field

The present invention relates to a kind of camera installation, particularly relate to a kind of miniaturization lens group.

Background technology

As Fig. 1, Fig. 2 and shown in Figure 3, the lens group of existing a kind of camera is to include an outer cover unit 1, to be installed in the lens unit 2 and of this outer cover unit 1 inside in order to drive this lens unit 2 produces shift reciprocately along an axis motor 3.

This outer cover unit 1 has a perisporium 101 and and is opened in guide groove 102 on this perisporium 101.

This lens unit 2 has a camera lens front stall 4, one is arranged on the camera lens back seat 5 of these camera lens front stall 4 inboards along this axis, one be arranged on this camera lens before, back seat 4, large aperture plate 6 between 5, one be hubbed on this camera lens before, back seat 4, between 5 and can produce the little aperture board 7 that pivots with respect to this large aperture plate 6, one be hubbed on this camera lens before, back seat 4, between 5 and can produce the shutter plate 8 that pivots with respect to this large aperture plate 6, one is hubbed on this outer cover unit 1 and but the connecting rod 9 and of this shutter plate 8 of interlock is installed on the outer cover unit 1 and the electromagnetic brake 901 of brake this connecting rod 9.

This large aperture plate 6 has a pair of large aperture hole 601 that should axis, this little aperture board 7 have one can be nested in the guide groove 102 of this outer cover unit 1 interlock end 701 and one can with respect to this large aperture hole 601 overlap or away from little diaphragm hole 702.This shutter plate 8 have a stopper portion 801 and one can with respect to this large aperture hole 601 produce cover or away from cover end 802.This connecting rod 9 is arranged on this camera lens front stall 4 outsides, but and have a pivot portion 902, be located at these pivot portion 902 1 sides and can be subjected to these electromagnetic brake 901 interlocks drive end 903 and one with the 903 opposite settings of this drive end and this stopper portion 801 of interlock affect end 904.

When starting this motor 3 and driving this lens unit 2 when axis produces displacement, the variation that utilizes these guide groove 102 shapes cooperates with the interlock end 701 of this little aperture board 7, just can reach the purpose of aperture switching.And as Fig. 2 and shown in Figure 4, when starting this electromagnetic brake 901 and this drive end 903 of interlock, but this affects the just stopper portion 801 of this shutter plate 8 of interlock of end 904, and make cover 802 relative these large aperture holes 601, end produce cover or away from, and reach the purpose of controlling shutter.

The aperture of expection switches though this lens group can reach, shutter is controlled purpose, still has following shortcoming:

One, controlling of this shutter plate 8 is to utilize the electromagnetic brake 901 that is installed on the outer cover unit 1 to drive this connecting rod 9, make this this shutter plate 8 of connecting rod 9 interlocks again, and because this connecting rod 9 can produce pivotal action, add being horizontally disposed with of this electromagnetic brake 901, can cause whole volume bigger.

Two, because the switching of aperture must utilize little aperture board 7 to cooperate with the guide groove 102 of this outer cover unit 1, and because controlling of shutter plate 8 must be by means of the interlock of connecting rod 9, after so lens unit 2 must be finished with this outer cover unit 1 assembling, just can test, if test back is can't normal operation, just lens unit 2 must be pulled down maintenance on outer cover unit 1, be adjusted, dismounting meeting repeatedly causes the trouble of assembling, testing.

Three, the end 904 that affects of this connecting rod 9 must reach the long stroke that just can contain this lens unit 2, and must pass the forward and backward seat of this

camera lens

4,5 could and the shutter plate 8 stopper portions 801 of clipping between the forward and backward

seat

4,5 of this camera lens produce and link, so when assembly, quite be not easy.

Four, the clearance of 9 pivots of clearance, connecting rod on this outer cover unit 1 of the size of these electromagnetic brake 901 magnetic attractions, connecting rod 9 and shutter plate 8 junctions ... or the like the cumulative limit that produced, may influence shutter plate 8 accuracy of actions.

Summary of the invention

The object of the present invention is to provide a kind of member that will switch aperture and shutter operation all to be fitted on the lens unit, but not only simplified structure, reduced volume, and can produce assembly, detect easily, the also miniaturization lens group of high effect of precision.

Miniaturization lens group of the present invention includes the motor that lens unit and that an outer cover unit, is installed in this outer cover unit inside can drive this lens unit shift reciprocately.This outer cover unit has a base and and is located at the top cover of this base one side end along axis lid, and its grade matches and defines a spatial accommodation, and this base and top cover respectively have a pair of mirror hole that should axis.This lens unit is to be installed in this spatial accommodation, and has an a pair of camera lens front stall that should top cover, one is arranged on the camera lens back seat of this camera lens front stall inboard along this axis, one be arranged on this camera lens before, large aperture plate between the back seat, one be hubbed on this camera lens before, between the back seat and can produce the little aperture board that pivots with respect to this large aperture plate, one be hubbed on this camera lens before, between the back seat and can produce the shutter plate and two that pivots with respect to this large aperture plate and be installed in one of them actuator of this camera lens front stall and this camera lens back seat relatively, before this camera lens, be provided with two pivots that are provided with relatively between the back seat, this large aperture plate has the large aperture hole of a corresponding axis, this little aperture board has a pivot first articulated section on pivot therein, the swing end of one opposite setting and contiguous this axis with first articulated section, first stopper portion and in this first articulated section, one side is located at the little diaphragm hole on this swing end, and when this first stopper portion is subjected to wherein an actuator stopper, can make little aperture board switch to a second place by a primary importance, and make this little diaphragm hole by switching to the state that is away from this large aperture hole with the overlapping state in this large aperture hole, this shutter plate has second articulated section of a pivot on another pivot, the one opposite end of covering that is provided with and is close to this axis with second articulated section, second a stopper portion in this second articulated section, one side, and when this second stopper portion is subjected to another brake stopper, can make shutter plate switch to a hidden position by an original position, and make this cover the end and switch to the state that covers this large aperture hole by the state away from this large aperture hole, actuator respectively has one and is attached at first of this little aperture board and shutter plate, drive division in the two stopper portions.This motor is to be installed on this outer cover unit.

Miniaturization lens group configured in one piece of the present invention can produce effects such as reduced volume, simplified structure, assembling be easy.

Description of drawings

The present invention is described in detail below in conjunction with drawings and Examples:

Fig. 1 is the schematic perspective view of existing a kind of lens group;

Fig. 2 is the schematic top plan view of this kind lens group;

Fig. 3 is the cross-sectional schematic of being got along the straight line 3-3 among Fig. 2;

Fig. 4 is the view that is similar to Fig. 2, illustrates that an electromagnetic brake drives a connecting rod and interlock one shutter plate produces the synoptic diagram of action;

Fig. 5 is the three-dimensional exploded view of a preferred embodiment of the present invention;

Fig. 6 is the combination section of the above-mentioned preferred embodiment of the present invention;

Fig. 7 is the cross-sectional schematic of being got along the straight line 7-7 among Fig. 6;

Fig. 8 is the view that is similar to Fig. 7, illustrates that one first actuator drives a little aperture board and produces the synoptic diagram of action;

Fig. 9 is the cross-sectional schematic of being got along the straight line 9-9 among Fig. 6;

Figure 10 is the view that is similar to Fig. 9, illustrates that one second actuator drives the synoptic diagram that a shutter plate produces action.

Embodiment

As Fig. 5 and shown in Figure 6, the preferred embodiment of miniaturization lens group of the present invention comprises the lens unit 200 and that an outer cover unit 100, is installed in these outer cover unit 100 inside can drive the motor 300 that this lens unit 200 produces shift reciprocatelies.This motor 300 is a prior art with the connecting structure and the operational motion of lens unit 200, so no longer describe in detail at this.

This outer cover unit 100 has a base 11 and and covers the top cover 12 that is located at these base 11 1 side ends along an axis L, and its grade matches and defines a spatial accommodation 13.This base 11 has a pair of mirror hole 111 that should axis L, and this top cover 12 also has a pair of mirror hole 121, the protection eyeglass 14 and that can be mounted in these mirror hole 121 1 open ends that should axis L and is embedded airtightly in the resistance of these protection eyeglass 14 inboards and leaks assembly 15.It is poroid that this mirror hole 121 is outer wide, interior narrow class, and have a large-diameter portion 122, a minor diameter part 123, the one shoulder face 124 and between this large and small footpath portion 122,123 and be arranged with annular groove 125 on this shoulder face 124.It is to be set in this annular groove 125 that assembly 15 is leaked in this resistance, and utilizes this protection eyeglass 14 to be locked in this large-diameter portion 122 and assembly 15 generations are leaked in this resistance and suppress, and just can make this mirror hole 121 reach airtight, waterproof purpose.

This lens unit 200 is to be installed in this spatial accommodation 13, and has a pair of camera lens front stall 21 that should top cover 12, one is arranged on the camera lens back seat 22 of these camera lens front stall 21 inboards along this axis L, one be arranged on this camera lens before, back seat 21, large aperture plate 23 between 22, one be hubbed on this camera lens before, back seat 21, between 22 and can produce the little aperture board 24 that pivots with respect to this large aperture plate 23, one be hubbed on this camera lens before, back seat 21, between 22 and can produce the shutter plate 25 that pivots and be installed in one first on this camera lens back seat 22 relatively with respect to this large aperture plate 23, two

actuators

26,27.

The pivot 221,222 that this camera lens back seat 22 is provided with two relative settings and extends towards this camera lens front stall 21 along the L that parallels to the axis.

This large aperture plate 23 has a corresponding axis L and can enter the large aperture hole 231 of light.

Cooperate and consult Fig. 7, it is laminar that this little aperture board 24 generally is the L type, and have a pivot in first articulated section 241 on this pivot 221, be provided with and the swing end 242 of contiguous this axis L, first a stopper portion 243 and in this first articulated section 241 inboards and convergence bending place be located at little diaphragm hole 244 this swing end 242 on opposite with first articulated section 241.This first stopper portion 243 is the slotted hole shape.

Cooperate and consult Fig. 9, this shutter plate 25 is general L-shaped lamellar, and have one in the bending place and second articulated section 251 of axle pivot on this pivot 222, one cover end 252 and second a stopper portion 253 at these second articulated section, 251 1 sides and contiguous this axis L at these second articulated section, 251 opposite sides.This second stopper portion 253 is the slotted hole shape.

This first and second actuator the 26, the 27th is an example with the electromagnetic brake, and respectively has one and be shaft-like and stretch the drive division 261,271 that is located in this first and second stopper portion 243,253 slidably.

The one-piece construction of utilizing above-mentioned member to form, and as Fig. 7, shown in Figure 8, when the user (for example outdoor under different environment, indoor) operate camera takes pictures, and when being changed to this lens unit 200 through sensing and by circuit transmission light, this first actuator 26 starts immediately, and this drive division 261 produces and revolves mobile work can to affect this little aperture board 24 be that center of rotation produces and swings with this pivot 221, and switch to a second place by a primary importance, and make this little diaphragm hole 244 by switching to the state that is away from this large aperture hole 231 with the overlapping state in this large aperture hole 231.

Fig. 9, shown in Figure 10 for another example, when the user pushes a switch (figure does not show), this second actuator 27 starts immediately, and this drive division 271 produces and revolves mobile work can to affect this shutter plate 25 be that center of rotation produces and swings with this pivot 222, and switch to a hidden position by an original position, impel the end 252 of covering of this shutter plate 25 to switch to the state that covers this large aperture hole 231, to reach the control purpose of timing up by state away from this large aperture hole 231.

Therefore, the lens group of the present invention aperture that can reach expection really switches, shutter controls purpose, and have following effect compared to existing structure:

One, this little aperture board 24 and shutter plate 25 controls, be to utilize the driving that is installed in first and

second actuator

26,27 on this camera lens back seat 22 relatively and reach, and constitute camera lens front stall 21, camera lens back seat 22, large aperture plate 23, little aperture board 24, shutter plate 25, first actuator 26, second actuator 27 of this lens unit 200, structure in aggregates all connected to each other is so whole volume can reach the miniaturization purpose.

Two, the switching of aperture is to utilize this first actuator 26 to drive this little aperture board 24 to reach, and need not cooperate with this outer cover unit 100, and controlling of shutter plate 25 also is driving by means of second actuator 27, after so lens unit 200 assemblings are finished, just can test separately, and organize these outer cover unit 100 inside after test is finished again, do not have the problem of repeated disassembled and assembled fully, so assemble, test comparatively simple.

Three, directly convex with this pivot 221,222 on this camera lens back seat 22, and after 26,27 groups of this first and second actuators are located on this camera lens back seat 22, the position of this drive division 261,271 is also quite clear and definite, and is quite easy when making the assembly of little aperture board 24, large aperture plate 23 and shutter plate 25.

Four, this first and second actuator the 26, the 27th directly drives this little aperture board 24 and shutter plate 25, does not need to see through other linkage part, so the action accuracy height of little aperture board 24 and shutter plate 25 again.

Claims

1. miniaturization lens group includes the lens unit and that an outer cover unit, is installed in this outer cover unit inside and drives the motor of this lens unit along an axis shift reciprocately, it is characterized in that:

This outer cover unit has a base and and is located at the top cover of this base one side end along axis lid, and this base cooperates jointly with top cover and defines a spatial accommodation, and this base and top cover respectively have a pair of mirror hole that should axis;

This lens unit, be to be installed in this spatial accommodation, and has an a pair of camera lens front stall that should top cover, one is arranged on the camera lens back seat of this camera lens front stall inboard along this axis, one be arranged on this camera lens before, large aperture plate between the back seat, one be hubbed on this camera lens before, between the back seat and can produce the little aperture board that pivots with respect to this large aperture plate, one be hubbed on this camera lens before, between the back seat and can produce the shutter plate and two that pivots with respect to this large aperture plate and be installed in actuator on this camera lens back seat relatively, before this camera lens, be provided with two pivots that are provided with relatively between the back seat, this large aperture plate has the large aperture hole of a corresponding axis, this little aperture board has first articulated section that is hubbed on one of them pivot, the swing end of one opposite setting and contiguous this axis with first articulated section, first stopper portion and in this first articulated section, one side is located at the little diaphragm hole on this swing end, this shutter plate has second articulated section that is hubbed on another pivot, the one opposite end of covering that is provided with and is close to this axis with second articulated section, second a stopper portion in this second articulated section, one side, aforementioned actuator respectively has one and is attached at first of this little aperture board and shutter plate, drive division in the two stopper portions;

This motor is to be installed on this outer cover unit.

2. miniaturization lens group as claimed in claim 1 is characterized in that: first and second stopper portion of the little aperture board of this lens unit and shutter plate is the slotted hole shape.

3. miniaturization lens group as claimed in claim 2 is characterized in that: the actuator of this lens unit is to adopt electromagnetic brake, and drive division is to be shaft-like, and stretches and be located in this first and second stopper portion.

4. miniaturization lens group as claimed in claim 1; it is characterized in that: it is poroid that set mirror hole is outer wide, interior narrow class on the top cover of this outer cover unit; and have a large-diameter portion, a minor diameter part, the one shoulder face and between this large and small footpath portion and be arranged with annular groove on this shoulder face, this outer cover unit also has one and is mounted in the resistance that the protection eyeglass and in this large-diameter portion is embedded in this annular groove and leaks element.

5. miniaturization lens group as claimed in claim 1, it is characterized in that: when the first stopper portion of this lens unit is subjected to wherein an actuator stopper, can make little aperture board switch to a second place, and make this little diaphragm hole by switching to state away from this large aperture hole with the overlapping state in this large aperture hole by a primary importance.

6. miniaturization lens group as claimed in claim 1, it is characterized in that: when the second stopper portion of this lens unit is subjected to another brake stopper, can make shutter plate switch to a hidden position, and make this cover the end to switch to the state that covers this large aperture hole by state away from this large aperture hole by an original position.