CN201514511U - Periscopic lens structure - Google Patents
Periscopic lens structure Download PDFInfo
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- CN201514511U CN201514511U CN2009201760707U CN200920176070U CN201514511U CN 201514511 U CN201514511 U CN 201514511U CN 2009201760707 U CN2009201760707 U CN 2009201760707U CN 200920176070 U CN200920176070 U CN 200920176070U CN 201514511 U CN201514511 U CN 201514511U
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- piezoelectric element
- mirror slip
- optical mirror
- lens construction
- periscopic lens
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Abstract
A periscopic lens structure is provided, wherein a plurality of piezoelectric assemblies are arranged on the periphery of a reflector prism, the deflection angle of the reflector prism can be digitally controlled as piezoelectric assemblies can differently deform under different voltages, which can compensate the unstable optical path caused by the shake of hands, enables optical signals to fall on an image sensing assembly stably, and further realizes the purpose of hand shake prevention.
Description
Technical field
The utility model relates to a kind of lens construction, particularly a kind of periscopic lens construction with anti-hand shake function.
Background technology
Image capture unit universalness day by day with mobile phone, PDA and digital camera etc. of filming image function, and it is considerable convenient to bring people; At present, a kind of lens set of periscopic camera lens is hidden in the fuselage of image capture unit, and its do flowing mode for utilize total reflection prism with incident ray with perpendicular to behind the optical axis direction refraction an angle of 90 degrees, enter the optical mirror slip group again, and adjust focal length in the mode that moves up and down by the optical mirror slip group, the design of this kind periscopic camera lens need not protrude in camera lens outside the fuselage of image capture unit, thereby can significantly reduce the volume and the thickness of image capture unit, cause overall appearance more compact, to promote the portability of image capture unit.
The image capture unit of periscopic camera lens is very responsive to vibration, when taking, because the hand shake makes light signal pass through moving of the imaging on image sensing component behind the camera lens, causes image blur.Common shockproof mode is that shockproof compensating glass group is set in camera lens specially, makes the compensating glass group correspondingly adjust position and angle according to the direction and the degree that shake, thereby makes light path keep stable.Yet this shockproof mode need be provided with special compensating glass group, has therefore increased the volume and the weight of image capture unit, is unfavorable for the designer trends of the miniaturization of products.
The utility model content
The utility model proposes a kind of embodiment of periscopic lens construction, when it is subjected to different voltage by piezoelectric element, produce different deformation extents, thereby the light path shakiness that the deflection angle of control total reflection prism causes because of the hand shake with compensation, so can accurately make stable the dropping on the image sensing component of light signal, reach the purpose of anti-hand shake.
The embodiment of the periscopic lens construction that the utility model proposed comprises: the optical mirror slip group, and it comprises lens and at least along the optical axis setting; Image sensing component, it is arranged at optical mirror slip group below; Reflection subassembly is arranged at optical mirror slip group top movably, in order to light signal is conducted on the optical axis of optical mirror slip group, and imaging on image sensing component; And anti-hand shake device, comprise the piezoelectric element that at least three set of dispense are arranged at the reflection subassembly periphery; And the control gear that electrically connects piezoelectric element, the vibrations degree of its detecting hand is to apply corresponding voltage in piezoelectric element, in order to the deflection angle of control reflection subassembly.
Description of drawings
Figure 1 shows that synoptic diagram according to the periscopic lens construction of the utility model one embodiment.
Figure 2 shows that the synoptic diagram that is arranged at total reflection prism according to four groups of piezoelectric elements of the utility model one embodiment.
Figure 3 shows that application synoptic diagram according to the periscopic lens construction of the utility model one embodiment.
The primary clustering symbol description
10 periscopic lens constructions
12 optical mirror slip groups
121,121 ' lens
13 optical axises
14 image sensing components
16 total reflection prisms
161 catoptrons
18, piezoelectric element
18A、
18B、
18C、18D
20 light signals
22 window lens
The θ angle of inclination
Embodiment
Figure 1 shows that synoptic diagram according to the periscopic lens construction of the utility model one embodiment.The periscopic lens construction can be applicable to the camera module in digital camera independently or other electronic equipment, as the camera module in the mobile phone.The periscopic lens construction 10 of present embodiment comprises optical mirror slip group 12, image sensing component 14, reflection subassembly and anti-hand shake device.In this embodiment, reflection subassembly is a total reflection prism 16; Anti-hand shake device comprises a plurality of piezoelectric elements 18 (comprising 18A, 18B) and control gear (not shown).
In one embodiment, optical mirror slip group 12 comprises two groups of lens 121,121 ' and prolong optical axis 13 and be provided with, image sensing component 14 is arranged at the below of optical mirror slip group 12, and be arranged on the same optical axis 13 with optical mirror slip group 12, image sensing component 14 can be CMOS image sensor or CCD image sensor; Total reflection prism 16 is arranged at the top of optical mirror slip group 12 movably, and the optical axis 13 of the catoptron 161 of total reflection prism 16 and optical mirror slip group 12 is 45 degree oblique angles, in order to receive light and light to be conducted to the optical axis direction of optical mirror slip group 12.
The above-mentioned explanation that continues, a plurality of piezoelectric elements 18 are disposed at the periphery of total reflection prism 16, in the present embodiment, a plurality of piezoelectric elements 18 are arranged at the lateral surface of the catoptron 161 of total reflection prism 16, wherein the medial surface of catoptron 161 is a reflecting surface, catoptron 161 quadrilaterals, as shown in Figure 2.Present embodiment uses four groups of piezoelectric elements 18 to be disposed at four corners of the periphery of catoptron 161 respectively, piezoelectric element 18 electrically connects with control gear, about the level of control gear detecting camera with the degree of vertically hand vibrations, applying relevant voltage arrives to small part group piezoelectric element 18, and make the effect of the change of shape that piezoelectric element 18 caused because of inverse piezoelectric effect (Converse piezoelectriceffect), promote total reflection prism 16 and controlled its deflection angle.
In the present embodiment, four groups of piezoelectric elements 18 are denoted as 18A, 18B, 18C and 18D respectively, definition piezoelectric element 18A, 18C and piezoelectric element 18B, 18D are that horizontal left and right directions is arranged in twos, and piezoelectric element 18A, 18B and piezoelectric element 18C, 18D are direction arrangement vertically in twos; Under the normal condition of no hand shake, as shown in Figure 1, piezoelectric element 18A, 18B, 18C, 18D maintain the original state, wherein accompanying drawing is only drawn out piezoelectric element 18A, 18B, then light signal 20 is entered by window lens 22 and goes into optics lens set 12 through total reflection prism 16 bending 90 degree are laggard, and adjusts imaging on image sensing component 14 behind the focal lengths by optical mirror slip group 12.
When camera vibrates vertically because of the hand shake, the image of image sensing component 14 produces vertical hunting, then control gear startup piezoelectric element 18A, 18C are one group, piezoelectric element 18B, 18D are another group, as shown in Figure 3, make the shape elongation of piezoelectric element 18A, 18C, and piezoelectric element 18B, 18D maintain the original state or elongation a little, piezoelectric element 18A, 18C have bigger elongation than piezoelectricity assembly 18B, 18D as can be known among the figure; For convenience of explanation, this enforcement hypothesis has only vibration vertically, thus only draw out piezoelectric element 18A and piezoelectric element 18B, as for piezoelectric element 18C and piezoelectric element 18D then respectively with piezoelectric element 18A and the corresponding start of piezoelectric element 18B.In the present embodiment, the distortion of this kind piezoelectric element 18A, 18B, 18C, 18D combination makes total reflection prism 16 tilt angle theta, this tilt angle theta be able to compensate the light path skew that the hand shake causes, light is advanced along optical axis 13 directions of optical mirror slip group 12 accurately and stably, therefore can be stable be imaged on the image sensing component 14; In like manner, when camera during because of the horizontal side-to-side vibrations of hand shake, it is one group that control gear starts piezoelectric element 18A, 18B, and piezoelectric element 18C, 18D be another group, control total reflection prism 16 anglecs of rotation, makes being imaged on the image sensing component 14 that light can be stable.Utilize control gear detecting vertically with level about vibrations, produce corresponding voltage on different casting die assembly 18A, 18B, 18C, 18D, can compensate the skew of (comprising the angle of inclination or the anglec of rotation) of any deflection angle, reach shockproof effect fully.
Wherein, the material of piezoelectric element is piezoelectric ceramics and number and unrestricted, and in other embodiments, the number of piezoelectric element only is required to be more than three and gets final product; Control gear is adjusted the weight of voltage according to the material of piezoelectric element and number, neutralizes on electric assembly with voltage suitably, fully controls the angle of inclination and the anglec of rotation of reflection subassembly.
In addition, total reflection characteristic according to light, when total reflection prism deflection one angle, light path will produce the angular deflection of twice, promptly on image sensing component, image can produce bigger displacement, and anti-hand shake device therefore of the present utility model can obtain the image position control than high power under the deflection angle of less total reflection prism is adjusted.
In sum, the utility model is subjected to the size of voltage to control the characteristic of its deformation extent by piezoelectric element, and the deflection angle of control reflection subassembly shakes the light path shakiness that causes with compensation because of hand, make stable the dropping on the image sensing component of light signal, and then reach the purpose of anti-hand shake.
Above-described embodiment only is explanation technological thought of the present utility model and characteristics, its purpose makes those skilled in the art can understand content of the present utility model and is implementing according to this, when can not this qualification the utility model, be that every equivalence of doing according to spirit disclosed in the utility model changes or modification, must be encompassed in the claim of the present utility model.
Claims (6)
1. a periscopic lens construction is characterized in that, comprising:
One optical mirror slip group comprises lens and at least along an optical axis setting;
One image sensing component is arranged at described optical mirror slip group below;
One reflection subassembly is arranged at described optical mirror slip group top movably, in order to a light signal is conducted on the described optical axis of described optical mirror slip group, and imaging on described image sensing component; And
One anti-hand shake device comprises:
At least three group piezoelectric elements distribute to be arranged at described reflection subassembly periphery; And
One control gear, it electrically connects more described piezoelectric element, and the degree of detecting hand vibrations is to apply corresponding voltage to more described piezoelectric element, in order to control a deflection angle of described reflection subassembly.
2. periscopic lens construction as claimed in claim 1 is characterized in that, described reflection subassembly is a total reflection prism.
3. periscopic lens construction as claimed in claim 1 is characterized in that described reflection subassembly comprises a catoptron, and this catoptron is quadrilateral.
4. periscopic lens construction as claimed in claim 3 is characterized in that, more described piezoelectric element is arranged at four corners of a lateral surface of described catoptron respectively.
5. periscopic lens construction as claimed in claim 3 is characterized in that, the described optical axis of described catoptron and described optical mirror slip group is 45 degree oblique angles.
6. periscopic lens construction as claimed in claim 1 is characterized in that, the material of more described piezoelectric element is a piezoelectric ceramics.
Priority Applications (1)
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CN2009201760707U CN201514511U (en) | 2009-09-08 | 2009-09-08 | Periscopic lens structure |
Applications Claiming Priority (1)
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CN2009201760707U CN201514511U (en) | 2009-09-08 | 2009-09-08 | Periscopic lens structure |
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CN201514511U true CN201514511U (en) | 2010-06-23 |
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CN2009201760707U Expired - Fee Related CN201514511U (en) | 2009-09-08 | 2009-09-08 | Periscopic lens structure |
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