JP2006221098A - Camera module with led for flash light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To move a zoom lens and a flash light in portable equipment with a camera far and near to be interlocked with each other in a subject direction. <P>SOLUTION: The camera module 100 with an LED for a flash light for portable equipment is constituted of a camera module 110 where a zoom lens 113 constituted of a plurality of combinations and a focus lens are held and a circuit board holding base 124 on which an LED module is mounted, which are integrated by a connector A126 having a guide hole 133 engaged with a guide pin 132 disposed at the center part of an outer case 115 and a middle case 116. A feed base 130 having a screw hole 131 and a U-shaped connector B formed to extend over a long groove 137 provided on the outside part of the outer case 115 and the middle case 116 are connected, whereby the circuit board holding base 124 and the zoom lens holding base 114 are moved far and near to be interlocked with each other in the subject direction via the feed base 130 by the driving screw 128 of an actuator 120. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure in which a zoom lens of a camera-equipped portable device such as a cellular phone and a flash light LED are interlocked.

  Recent technological developments of mobile devices such as mobile phones are remarkable, and it is not an exaggeration to say that camera mounting has become almost standardized. Incorporation of focusing and zoom mechanism, CCD and C-MOS hundreds Products with as many as 10,000 pixels are being offered to the market one after another. A product with a flash light mechanism using an LED module has also appeared, and the function of a so-called digital camera is approaching without limit.

  However, in current products, the LED for the flashlight is often fixedly disposed on the motherboard near the camera lens module. Although the LED for flashlights has the advantages of small size and low power consumption, the amount of light is much less than that of flashlights using xenon tubes. For this reason, efforts to improve the shortage of light by LEDs are required.

  FIG. 10 showing a main sectional view of a typical conventional example shows a state in which the camera lens module 210 can move in the direction of the subject direction arrow c, and FIG. 11 shows an arrow from the state in which the camera lens module 210 is closest to the subject direction. The case where it can move to d direction is shown. 10 and 11, the camera module with flashlight LED 200 disposed in the outer case 215 includes a camera lens module 210 and a flashlight LED module 220. The camera lens module 210 is disposed in the outer case 215 and has a cylindrical zoom lens holding base 214 that can move toward and away from the subject (a mechanism for finely moving the focus lens 211 toward the subject and focusing it at the same time). In many cases, the description of the mechanism and the operation is omitted because the zoom mechanism of the present invention can be applied.) The outer periphery of the zoom lens 213 composed of a plurality of combinations held in the above and the zoom lens holding base 214 And a focus lens 211 whose outer peripheral part is held by a cylindrical focus lens holding base 212 that slides on the part. The focus lens 211 can move toward and away from the subject on the same optical axis corresponding to the zoom lens 213. The flashlight LED module 220 is fixed to the outer case 215 and has an irradiation lens 221 composed of a convex lens that irradiates the irradiation light 226 toward the subject direction, and an LED module on the circuit board holder 224 disposed in the outer case 215. 225. The LED module 225 is formed by mounting the LED 222 on the circuit board 223 disposed on the circuit board holding table 224. In this case, the irradiation light 226 from the LED module 220 for the flashlight has the holding position of the LED module 225 fixed, so that the zoom lens 213 and the focus lens 211 approach the subject as shown in FIG. On the other hand, when the zoom lens 213 and the focus lens 211 are moved away from each other as shown in FIG. 11 to perform close-up or telephoto shooting, the light amount is neither increased nor decreased, and the irradiation angle is neither enlarged nor reduced. In general, a flashlight with a low directivity is desired for close-up shooting of a subject, and a flashlight with sharp directivity is desirable for telephoto shooting of a subject. The reflected light from the subject is imaged on a video sensor such as a CCD or C-MOS provided behind the camera lens module 210 (not shown).

  As is clear from the above description, the zoom mechanism and the flash mechanism have not cooperated in the conventional example as shown in FIGS. As a result, the problem that needs to be solved is that when the illumination lens 221 and the LED module 225 are arranged and fixed close to each other in order to obtain a flashlight with a small directivity when the subject is close-up shot, When a flashlight with sharp directivity cannot be obtained, and when the irradiation lens 221 and the LED module 225 are spaced apart and fixed in order to obtain a flashlight with sharp directivity during telephoto shooting of the subject, During close-up photography, a flashlight with a low directivity and spread could not be obtained.

The present invention eliminates the above-mentioned drawbacks, and a flashlight with sharp directivity can be obtained when the subject is telephoto, and a flashlight with a small directivity can be obtained when the subject is close-up. A flash mechanism that cooperates with the zoom mechanism is proposed.
The basic means of the camera module with LED for flashlight of the present invention made to solve the problem relates to a configuration in which the zoom mechanism and the flashlight mechanism are positioned in cooperation with each other. The LED module for flashlight and the camera In the portable device provided with the lens module for the camera, the camera lens module has a focus lens and a zoom lens, and the LED module for flash has an irradiation lens that irradiates flash light, and the irradiation lens and the camera The lens module for the camera is arranged in the portable device, the zoom lens and the LED module for the flashlight are arranged on a mechanism that works together, and the LED module for the flashlight works on the subject in conjunction with the zoom lens for the camera. To move in parallel with the optical axis of the zoom lens. It is characterized in that it has a configurable.

  The camera lens module and the flashlight LED module of the camera module with LED for flashlight according to the first and second embodiments of the basic means of the present invention made to solve the problems are respectively an outer case. The camera lens module has a zoom lens holding base that slides along the inner wall of the middle case, and the zoom lens holding base includes a plurality of zoom lens holding bases. A zoom lens composed of a combination is held, and a focus lens holding base is provided immediately above the zoom lens holding base, and a focus lens holding an outer peripheral portion is disposed on the focus lens holding base, and is used for flash light. The LED module has an irradiation lens, the irradiation lens is held in the outer case, and the LED is mounted in the middle case. A circuit board holding base for holding the circuit board is provided, and the circuit board holding base and the zoom lens holding base that slide in the middle case in the direction of the subject are engaged with a guide pin provided in the center of the outer case. It is characterized in that it is integrated with a connector having a matching guide hole, and is configured to be able to move far and near in conjunction with the direction of the subject.

  Further, the configuration of the camera module with LED for flashlight according to the first embodiment and the second embodiment of the basic means of the present invention made to solve the problem is one of the outer walls formed by the outer case and the middle case. An actuator that engages with the screw hole by connecting a circuit board holding base and a feed base having a screw hole with a U-shaped connector so as to cross the long groove to provide a long groove. The circuit board holding table and the zoom lens holding table can be moved in a close-up manner in conjunction with the direction of the subject via a feed table by a driving screw.

  In addition, the configuration of the camera module with LED for flashlight according to the second embodiment of the basic means of the present invention made to solve the problem includes a circuit board holding base and a feed base having a screw hole. It is formed so as to be integrated in the middle case, and is configured to be movable toward and away from the subject via a feed base by a driving screw of an actuator engaged with the screw hole.

  In addition, the camera module with a flashlight LED having the configuration according to the first and third embodiments of the basic means of the present invention made to solve the problems includes the camera lens module and the flashlight LED module. Are mounted in a substantially elliptical middle case disposed in the outer case, and the camera lens module has a zoom lens holding base that slides along the inner wall of the middle case, and the zoom lens holding base Holds a zoom lens composed of a plurality of combinations, and a focus lens holding base is provided immediately above the zoom lens holding base, and a focus lens holding an outer peripheral portion is provided on the focus lens holding base. The LED module for flashlight has an irradiation lens, and the irradiation lens is held in the outer case, A circuit board holding base for holding the circuit board on which the LED is mounted is disposed, and the circuit board holding base and the zoom lens holding base that slide in the direction of the subject in the middle case are arranged at the center of the outer case. An actuator integrated with a connector having a guide hole that engages with a provided guide pin, and an actuator that engages with a pair of feed bases is provided in the vicinity of the outer case in the previous period, and is configured to be able to move near and far in conjunction with the direction of the subject. It is characterized by that.

Furthermore, in order to solve the problem, the configuration of the basic means related to Example 1, Example 2 and Example 3 of the camera module with LED for flashlight of the present invention is as follows.
The actuator system of the camera lens module for flashlight is constituted by an electromagnetic type, a piezoelectric type, or an electrostatic type alone or in combination.

  According to the present invention, using a camera module with a flashlight LED mounted on a portable device, particularly a mobile phone, an LED flashlight with a low directivity for close-up photography and a sharp directivity LED for telephoto photography Since a flashlight can be obtained, the quality of shooting can be improved.

  Further, according to the camera module with LED for flashlight of the present invention, the zoom mechanism and the LED module mechanism can be moved in the direction of the subject in a simple mechanism, so that excellent cost / performance can be achieved.

  The basic configuration of the present invention is that the camera module with a flashlight LED has a zoom lens, the flash LED has an irradiation lens for irradiating flash light, and the irradiation lens and the camera lens. The module is disposed and fixed on the portable device, the zoom lens and the LED module are disposed on a mechanism that is coupled or interlocked, and the LED module for flashlight is coupled to the camera zoom lens with respect to the subject. This means that the zoom lens can be moved in parallel with the optical axis of the zoom lens.

  Below, Example 1 of the present invention is described based on a drawing. FIG. 1 is a main cross-sectional view of the first embodiment of the present invention during telephoto shooting. 2 and 3 are sectional views taken along lines xx and yy in FIG. 1, respectively, showing Embodiment 1 of the present invention. FIG. 4 is an external perspective view of the main configuration of FIG. 1 according to the present invention. FIG. 5 is an exploded perspective view of the main configuration of FIG. 1 according to the present invention. FIG. 6 is a main cross-sectional view of the first embodiment of the present invention during close-up photography. FIG. 7 is a main cross-sectional configuration diagram of Embodiment 2 of the present invention. FIG. 8 is a main cross-sectional configuration diagram of Embodiment 3 of the present invention. FIG. 9 is an explanatory diagram of LED irradiation light according to the present invention. 10 and 11 are explanatory sectional views of a conventional example.

  1, 2, 3, 4, 5, and 6, the flashlight LED disposed in the outer case 115 (almost elliptical, rectangular, etc., the cross-sectional shape may be arbitrary). The attached camera module 100 includes a camera lens module 110 and a flashlight LED module 120. The integrated camera lens module 110 and circuit board holding base 124 have an inner wall 117 of the middle case 116 having thick portions 116A and 116B in which the cross-sectional shape disposed inside the outer case 115 matches the outer case 115. The zoom lens holding base 114 holds a zoom lens 113 composed of a plurality of combinations, and is directly above the zoom lens holding base 114. Is provided with a cylindrical focus lens holder 112, and the focus lens holder 112 holds the outer periphery of the focus lens 111. The focus lens 111 is the same as the zoom mechanism of the zoom lens 113, which will be described later, that is, on the focus lens holder 112 so that the zoom lens 113 can move in the direction of the subject along with the zoom lens 113 on the same optical axis. A mechanism can be applied in which a newly provided feed base is moved by a screw of another actuator disposed on the outer periphery of the outer case 115. Note that the focus lens holding base 112 may have a mechanism (not shown) that can move the focus lens 111 in the direction of the subject for focusing.

  The LED module 120 for flashlight includes an irradiation lens 121 made of a convex lens that irradiates irradiation light 135 toward the subject disposed on the outer case 115, and an inner wall of the middle case 116 disposed on the inner side of the outer case 115. The LED module 125 on the circuit board holder 124 that slides along the direction 117 along the subject. The LED module 125 is formed by mounting an LED 122 on a circuit board 123 disposed on a circuit board holding table 124. In addition, even if it comprises a Fresnel lens etc. instead of the irradiation lens 121, it does not deviate from this invention.

Guide pins 132 are embedded in substantially the center of the middle case 116 and the outer case 115. The integrated zoom lens holding table 114 and circuit board holding table 124 have a guide hole 133 that engages with the guide pin 132 at the center of the connector A126, and can move in the near and far direction of the subject.
Similarly, a part of the outer wall 136 formed by the outer case 115 and the inner case 116 on the LED module 125 side is cut out in the axial direction to provide a long groove 137 (detailed illustration omitted) in the axial direction so as to straddle the long groove 137. The circuit board holding base 124 and the feed base 130 are connected to each other by a U-shaped connector B127.

  The drive screw 128 of the actuator 129 can be mechanically engaged with the screw hole 131 of the feed base 130 to move the feed base 130 in the direction of the subject, and thus the zoom lens holding base 114 and the circuit board holding base 124 can be moved to a distance. . Of course, the driving method of the actuator 129 may be any of an electromagnetic type, a piezoelectric type or an electrostatic type, either alone or in combination.

  FIG. 1 shows a case where the subject can be moved in the a direction and the subject is telephoto-photographed. The irradiation light 135 from the irradiation lens 121 has sharp directivity, and the zoom lens 111 is also positioned at a position suitable for telephoto shooting.

  In the case of performing close-up photography in FIG. 1, when a predetermined movement amount and speed are determined by the drive screw 128 of the actuator 129, the feed base 130 moves in the direction of the subject, so the zoom lens holding base 114 and the circuit board holding base 124 are It moves simultaneously and it becomes a block diagram shown in FIG. (It is possible to move in the b direction.) As a result, the irradiation light 135 from the irradiation lens 121 has a non-directional spread corresponding to the close-up shooting of the subject, and the zoom lens 113 is also suitable for the close-up shooting. Is positioned.

  In the description of FIG. 7 showing the second embodiment, for the sake of simplicity, the same reference numerals as those in the first embodiment will be used, and differences from the first embodiment will be mainly described. In FIG. 7, a camera module 200 with a flashlight LED disposed in an outer case 115 (substantially oval cylindrical shape, rectangular cylindrical shape, etc., may have any sectional shape) includes a camera lens module 110 and a flashlight LED. The module 120 is configured. The integrated camera lens module 110 and circuit board holding base 124 have an inner wall 117 of the middle case 116 having thick portions 116A and 116B in which the cross-sectional shape disposed inside the outer case 115 matches the outer case 115. The zoom lens holding base 114 holds a zoom lens 113 composed of a plurality of combinations, and is directly above the zoom lens holding base 114. Is provided with a cylindrical focus lens holder 112, and the focus lens holder 112 holds the outer periphery of the focus lens 111. The focus lens 111 can move in the direction of the subject along with the zoom lens 113 on the same optical axis with respect to the zoom lens 113. It should be noted that the focus lens holding base 112 may have the configuration of the second embodiment of the present invention even if it has a mechanism (not shown) that can move the focus lens 111 toward the subject for focusing. The number of lenses of the camera lens module 110 of the present invention is three in the drawing, but a plurality of lenses may be used.

  The flashlight LED module 120 includes an irradiation lens 121 that is a convex lens that irradiates the irradiation light 135 toward the subject disposed in the outer case 115, and an LED middle case 134 that is disposed inside the outer case 115. It is comprised with the LED module 125 on the circuit board holding stand 124 hold | maintained. The LED module 125 is formed by mounting an LED 121 on a circuit board 123 disposed on a circuit board holder 124. It should be noted that, in order to reduce the thickness, it is possible to use a Fresnel lens or the like instead of the irradiation lens 121 without departing from the present invention.

  Guide pins 132 are embedded in substantially the center of the middle case 116 and the outer case 115. The integrated zoom lens holding table 114 and circuit board holding table 124 have a guide hole 133 that engages with the guide pin 132 at the center of the connector A126, and can move in the near and far direction of the subject.

  The integrally formed circuit board holding table 124 and feed table 140 are connected to the connector A 126 and disposed in the middle case 116.

  The drive screw 128 of the actuator 129 can be mechanically engaged with the screw hole 137 of the feed base 140 to move the feed base 140 in the direction of the subject, so that the zoom lens holding base 114 and the circuit board holding base 124 are moved. Can move in the distance. Of course, the driving method of the actuator 129 may be any of an electromagnetic type, a piezoelectric type, and an electrostatic type alone or in combination.

  FIG. 7 shows a case where the subject is telephoto-photographed. The irradiation light 135 from the irradiation lens 121 has a sharp directivity, and the zoom lens 113 is also positioned at a position suitable for telephoto shooting.

  In the case of close-up photography in FIG. 7, when the predetermined movement amount and speed of the drive screw 128 of the actuator 129 are determined, the feed base 130 moves in the direction of the subject, so the zoom lens holding base 114 and the circuit board holding base 124 are It moves simultaneously and becomes a block diagram substantially shown in FIG. As a result, the irradiation light 135 from the irradiation lens 121 corresponds to the case where the subject is photographed in close proximity, and has a non-directional spread, and the zoom lens 113 is also positioned at a position suitable for close-up photography.

  In the third embodiment shown in FIG. 8, the camera module 300 with LED for flashlight disposed in the outer case 115 (substantially elliptical cylindrical shape, rectangular cylindrical shape, etc. may have any cross-sectional shape) is the camera lens module 110. And the LED module 120 for flashlight. The camera lens module 110 and the circuit board holding base 124 integrated with a pair of feed bases 143 having a pair of screw holes 149 have a cross-sectional shape arranged on the inner side of the outer case 115 to match the outer case 115. A zoom lens 113 consisting of a plurality of combinations is mounted on the zoom lens holder 114 so that the light from the LED 122 slides along the inner wall 117 of the middle case 116 having the thick portions 116A and 116B so that the light from the LED 122 does not enter directly. And a cylindrical focus lens holding table 112 is disposed immediately above the zoom lens holding table 114, and the focus lens holding table 112 holds the outer periphery of the focus lens 111. The focus lens 111 can move in the direction of the subject along with the zoom lens 113 on the same optical axis with respect to the zoom lens 113. It should be noted that the focus lens holder 112 may have the configuration of the third embodiment of the present invention even if it has a mechanism (not shown) that can move the focus lens 111 toward the subject for focusing. A connector B127 and a connector C146 arranged so as to crotch long grooves 137 and 147 formed by cutting outside the outer case 115 and the outer case 116 are a pair of feed bases 130 and 143 and a circuit board holding base 124, respectively. And the zoom lens holding base 114. Actuators 129 and 145 having drive screws 128 and 144 that engage with the feed bases 130 and 143 are disposed near the outer case 115 (outside in FIG. 7).

  The drive screws 128 and 144 of the actuators 129 and 145 are mechanically engaged with the screw holes 137 and 146 of the feed bases 130 and 143 to make the feed bases 130 and 143 in the object direction, and thus the integrated zoom lens holding base 114. The circuit board holder 124 can be moved far and near. Of course, the driving method of the actuators 129 and 145 may be any of an electromagnetic type, a piezoelectric type, and an electrostatic type alone or in combination.

  If the camera lens module 110 and the circuit board holder 124 are not integrated but separated in the axial direction at the center of the guide pin 132 of the connector A126, it is necessary to drive the actuators 129 and 145 at the same movement amount and speed. Alternatively, the zoom lens holding table 114 and the circuit board holding table 124 may be moved independently. For example, when the zoom lens holding table 114 is moved in the direction of the subject, the circuit board holding table 124 may be independently moved in a step shape for close-up photography, or vice versa, by looking at the amount of movement.

  FIG. 9 is an explanatory diagram of the irradiation light without using the irradiation lens 121, and the LED 122 is disposed in the vicinity of the focal point of the reflection paraboloid so that the reflector 150 can obtain effective straight light toward the subject. This can also be applied to any of the first, second, and third embodiments as long as it is disposed on the circuit board holder 124 described above.

  According to the present invention, it can be used for general mobile devices, and can be expected to be used in a wide range of fields such as PDAs and composite AV devices as well as mobile phones.

It is principal sectional drawing at the time of telephotographing of Example 1 of the present invention. FIG. 2 is a sectional view taken along line xx of FIG. 1 showing Example 1 of the present invention. It is yy sectional view taken on the line of FIG. 1 which shows Example 1 of this invention. FIG. 2 is an external perspective view of the main configuration of FIG. 1 according to the present invention. FIG. 2 is an exploded perspective view of the main configuration of FIG. 1 according to the present invention. It is principal sectional drawing at the time of close-up photography of Example 1 of the present invention. It is a principal section lineblock diagram of the example 2 of the present invention. It is principal sectional drawing of Example 3 of this invention. It is explanatory drawing of LED irradiation of this invention. It is explanatory sectional drawing of a prior art example. It is explanatory sectional drawing of a prior art example.

Explanation of symbols

100, 200, 300 Camera module with LED for flash light 110 Camera lens module 111 Focus lens 112 Focus lens holder 113 Zoom lens 114 Zoom lens holder 115 Outer case 116 Middle case 117 Inner wall 137,147 Long groove 120 LED module for flash light 121 Irradiation lens 122 LED
123 Circuit board 124 Circuit board holder 125 LED module 126 Connector A
127 Connector B
146 Connector C
128,144 Drive screw 129,145 Actuator 130,140,143 Feed base 131,149 Screw hole 132 Guide pin 133, 133a, 133b Guide hole 135,151 Irradiation light 150 Reflector

Claims (6)

In portable devices with LED modules for flashlights and lens modules for cameras,
The camera lens module includes a focus lens and a zoom lens, the flash LED module includes an irradiation lens that irradiates flash light, and the irradiation lens and the camera lens module are disposed in the portable device, The zoom lens and the LED module for the flashlight are arranged on a mechanism that interlocks, and the LED module for the flashlight is interlocked with the zoom lens for the camera and is close to the subject in parallel with the optical axis of the zoom lens. A camera module with an LED for a flashlight, characterized by having a movable configuration.   The camera lens module and the flashlight LED module are each mounted in a substantially elliptical middle case disposed in an outer case, and the camera lens module is a zoom that slides along the inner wall of the middle case. The zoom lens holding table holds a zoom lens composed of a plurality of combinations, and a focus lens holding table is provided immediately above the zoom lens holding table. A focus lens having an outer peripheral portion is disposed, and the LED module for flashlight has an irradiation lens, the irradiation lens is held by the outer case, and the circuit board on which the LED is mounted in the middle case A circuit board holding table is disposed, and the circuit board holding table and the zoom lens holding table slide in the middle case in the direction of the subject. 2. The flash according to claim 1, wherein the flash unit is integrated with a connector having a guide hole that engages with a guide pin disposed in a center portion of the case, and is configured to be movable in a close-up manner in conjunction with a subject direction. Camera module with LED for light.   A part of the outer wall formed by the outer case and the inner case is cut in the axial direction to provide a long groove, and a circuit board holding base and a feed base having a screw hole are formed with a U-shaped connector so as to straddle the long groove. The circuit board holding table and the zoom lens holding table can be moved in a close-up manner in conjunction with a subject direction via a feed base by a driving screw of an actuator that is connected and engaged with the screw hole. The camera module with LED for flashlights of Claim 1 or Claim 2.   A structure in which the circuit board holding base and a feed base having a screw hole are formed so as to be integrated in a middle case, and can be moved toward and away from the subject via the feed base by a driving screw of an actuator that engages with the screw hole. The camera module with LED for flashlights according to claim 1, wherein the camera module has an LED for flashlight.   The camera lens module and the flashlight LED module are each mounted in a substantially elliptical middle case disposed in an outer case, and the camera lens module is a zoom that slides along the inner wall of the middle case. The zoom lens holding table holds a zoom lens composed of a plurality of combinations, and a focus lens holding table is provided immediately above the zoom lens holding table. A focus lens having an outer peripheral portion is disposed, and the LED module for flashlight has an irradiation lens, the irradiation lens is held by the outer case, and the circuit board on which the LED is mounted in the middle case A circuit board holding table is disposed, and the circuit board holding table and the zoom lens holding table slide in the middle case in the direction of the subject. An actuator that is integrated with a connector having a guide hole that engages with a guide pin disposed at the center of the case and that is engaged with a pair of feed bases is provided in the vicinity of the outer case, and is linked to the subject direction. The camera module with LED for flashlight according to claim 1, wherein the camera module has a configuration capable of moving far and near. The flashlight according to any one of claims 1 to 5, wherein an actuator driving method of the camera lens module for the flashlight is configured as an electromagnetic type, a piezoelectric type, or an electrostatic type alone or in combination. Camera module with LED.

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