US20190219797A1 - Optical lens assembly and electronic device - Google Patents
Optical lens assembly and electronic device Download PDFInfo
- Publication number
- US20190219797A1 US20190219797A1 US16/364,415 US201916364415A US2019219797A1 US 20190219797 A1 US20190219797 A1 US 20190219797A1 US 201916364415 A US201916364415 A US 201916364415A US 2019219797 A1 US2019219797 A1 US 2019219797A1
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- United States
- Prior art keywords
- lens element
- dual molded
- optical
- molded lens
- lens assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 120
- 230000009977 dual effect Effects 0.000 claims abstract description 124
- 239000004033 plastic Substances 0.000 claims abstract description 17
- 229920003023 plastic Polymers 0.000 claims abstract description 17
- 239000003086 colorant Substances 0.000 claims abstract description 12
- 238000001746 injection moulding Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000004417 polycarbonate Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/003—Light absorbing elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
Definitions
- the present disclosure relates to an optical lens assembly with dual molded lens element. More particularly, the present disclosure relates to an optical lens assembly applicable to an electronic device.
- the size, thickness and weight of the optical lens assembly thereof are decreased for satisfying the demand of miniaturization, however, the amount of the components in photographing devices is increased for enhancing the image quality at the same time. Hence, it is difficult for effectively controlling the stray light without decreasing the aligning precision of the lens elements.
- the aligning precision of the lens assembly can be maintained.
- the ink coating or the light shutter is usually used.
- both of the ink coating or the light shutter would affect the lens assembling structure for the aligning precision of the lens assembly.
- the light shutter can provide expert dimensional accuracy controlling ability than the ink coating which is applied to the lens assembly for avoiding the stray light.
- the light shutter has larger reflectivity, and the covered area is decreased when the shutter is directly embedded with the lens element, and the ability for controlling the stray light would be restricted.
- an optical lens assembly which has an optical axis, includes at least one lens element and at least one dual molded lens element.
- the dual molded lens element has two plastic parts with different colors, is formed by an injection molding method, and includes a transparent portion, a light absorbing portion and at least one axial connecting surface.
- the axial connecting surface is located on one side of the dual molded lens element for connecting the lens element which is adjacent to the axial connecting surface, thus a center of the dual molded lens element and a center of the lens element are aligned.
- an electronic device includes a camera module.
- the camera module includes the optical lens assembly according to the aforementioned aspect and an image sensor, wherein the image sensor is disposed on an image surface of the optical lens assembly.
- an optical lens assembly which has an optical axis, includes at least one dual molded lens element.
- the dual molded lens element has two plastic parts with different colors, and includes a transparent portion having an optical effective region and a light absorbing portion.
- the dual molded lens element has an outer diameter surface connecting a first side surface and a second side surface of the dual molded lens element, the transparent portion is arranged from an optical effective region of the dual molded lens element to the outer diameter surface and surrounds the dual molded lens element, thus the transparent portion is a part of the outer diameter surface, and the light absorbing portion is located on one of the first side surface and the second side surface of the dual molded lens element.
- an electronic device includes a camera module.
- the camera module includes the optical lens assembly according to the aforementioned aspect and an image sensor, wherein the image sensor is disposed on an image surface of the optical lens assembly.
- FIG. 1 is a schematic view of an optical lens assembly according to the 1st embodiment of the present disclosure
- FIG. 2 is an enlarged view of the dual molded lens element of the optical lens assembly of FIG. 1 ;
- FIG. 3 is a schematic view of parameters ⁇ 1 , ⁇ 2 , ⁇ po and ⁇ D of the dual molded lens element of the optical lens assembly of FIG. 1 ;
- FIG. 4A is a schematic view of the first step of a manufacturing method for the dual molded lens element according to the 1st embodiment of the present disclosure
- FIG. 4B is a schematic view of the second step of the manufacturing method for the dual molded lens element according to the 1st embodiment of the present disclosure
- FIG. 5 is an enlarged view of a dual molded lens element of an optical lens assembly according to the 2nd embodiment of the present disclosure
- FIG. 6 is an enlarged view of a dual molded lens element of an optical lens assembly according to the 3rd embodiment of the present disclosure
- FIG. 7 is an enlarged view of a dual molded lens element of an optical lens assembly according to the 4th embodiment of the present disclosure.
- FIG. 8 is a schematic view of a camera module of an electronic device according to the 5th embodiment of the present disclosure.
- FIG. 1 is a schematic view of an optical lens assembly 100 according to the 1st embodiment of the present disclosure.
- the optical lens assembly 100 is applied to a camera module of a mobile phone, wherein the camera module of the mobile phone includes the optical lens assembly 100 , an image sensor (not shown) and an IR-cut filter (not shown).
- the optical lens assembly 100 includes five lens elements with refractive power, in order from a first side to a second side, a first lens element 110 , a dual molded lens element 120 (a second lens element), a third lens element 130 , a fourth lens element 140 and a fifth lens element 150 .
- FIG. 2 is an enlarged view of the dual molded lens element 120 of the optical lens assembly 100 of FIG. 1 .
- the dual molded lens element 120 is made of plastic material, and includes a transparent portion 121 and a light absorbing portion 122 .
- the transparent portion 121 has an optical effective region 121 a , wherein the transparent portion 121 is made of transparent PC (Polycarbonate) with high refraction.
- the light absorbing portion 122 is made of black PC. That is, the dual molded lens element has two plastic parts with different colors by different color arrangement of the transparent portion 121 and the light absorbing portion 122 .
- Two side surfaces of the dual molded lens element 120 are a first side surface 123 and a second side surface 124 , and the dual molded lens element 120 has an outer diameter surface 125 connecting the first side surface 123 and a second side surface 124 .
- the transparent portion 121 is arranged from an optical effective region of the dual molded lens element 120 to the outer diameter surface 125 (that is, from the optical effective region 121 a to the outer diameter surface 125 ), and the outer diameter surface 125 of the dual molded lens element 120 includes at least an outer diameter surface of the transparent portion 121 which is a part of the outer diameter surface 125 .
- the outer diameter surface 125 of the dual molded lens element 120 is the outer diameter surface of the transparent portion 121 which surrounds the dual molded lens element.
- the outer diameter surface 125 may be an outer diameter assembling surface for connecting to a lens barrel. Therefore, the dual molded lens element 120 can be connected to other element of the optical lens assembly, such as a lens barrel, via the outer diameter surface 125 , so as to align the center of each lens element during arrangement.
- the light absorbing portion 122 is located on one side surface of the dual molded lens element 120 (in the 1st embodiment, the light absorbing portion 122 is located on the first side surface 123 of the dual molded lens element 120 ).
- the optical lens assembly 100 can further include axial connecting surface, in the 1st embodiment, the optical lens assembly 100 includes two axial connecting surfaces 126 , 127 located on two sides of the dual molded lens element 120 , respectively, which are disposed on the light absorbing portion 122 and the transparent portion 121 , respectively.
- the axial connecting surfaces 126 , 127 are for connecting the first lens element 110 and the third lens element 130 which are adjacent thereto.
- a center of the dual molded lens element 120 and the centers of the lens elements are aligned on the optical axis.
- the optical lens assembly 100 can further include at least one horizontal connecting surface, in the 1st embodiment, the optical lens assembly 100 includes two horizontal connecting surfaces 128 , 129 located on two sides of the dual molded lens element 120 , respectively, which are disposed on the light absorbing portion 122 and the transparent portion 121 , respectively.
- the horizontal connecting surfaces 128 , 129 are for connecting the first lens element 110 and the third lens element 130 which are adjacent thereto. Therefore, axial distances between the dual molded lens element 120 and the lens elements (the first lens element 110 and the third lens element 113 ) are formed.
- the optical lens assembly 100 can include at least one axial connecting surface, wherein when an angle between the axial connecting surface and the optical axis is ⁇ , and the following condition is satisfied: 0 degrees ⁇ 40 degrees. Preferably, the following condition can be satisfied: 5 degrees ⁇ 31 degrees.
- FIG. 3 is a schematic view of parameters ⁇ 1 , ⁇ 2 , ⁇ po and ⁇ D of the dual molded lens element 120 of the optical lens assembly 100 of FIG. 1 . In FIG.
- an outer diameter of the dual molded lens element 120 is ⁇ D
- an outer diameter of the light absorbing portion 122 is ⁇ po
- the following conditions are satisfied: 2.5 mm ⁇ D ⁇ 8.0 mm; and 0.5 ⁇ po/ ⁇ D ⁇ 1.0.
- ⁇ D 3.76 mm
- ⁇ po/ ⁇ D 0.91.
- FIG. 4A is a schematic view of the first step of a manufacturing method for the dual molded lens element 120 according to the 1st embodiment of the present disclosure.
- FIG. 4B is a schematic view of the second step of the manufacturing method for the dual molded lens element 120 according to the 1st embodiment of the present disclosure.
- the light absorbing portion 122 is formed by an injection molding method in a mold cavity between a movable mold 610 and a first fixed mold 620 . Then, according to the second step of FIG.
- the movable mold 610 is moved for forming the other mold cavity between the movable mold 610 and a second fixed mold 630 , that is, the light absorbing portion 122 would be moved into the other mold cavity, and the transparent portion 121 can be formed by another injection molding method in the other mold cavity.
- the dual molded lens element 120 with two colors can be formed by twice injection molding methods with two kinds of plastic materials.
- the parting surfaces would be formed on the dual molded lens element, wherein the parting surface which is located on the outer diameter surface thereof and extends along the horizontal direction is a horizontal parting surface, and the parting surface which is located on the first side surface or the second side surface and extends along the perpendicular direction is a perpendicular parting surface.
- the dual molded lens element 120 further includes two perpendicular parting surfaces PL 1 , PL 2 and a horizontal parting surface PL 3 .
- the perpendicular parting surface PL 1 is located on an outer side surface of the light absorbing portion 122 (two side surfaces of the light absorbing portion 122 are an inner side surface and the outer side surface, the inner side surface is connected to the transparent portion 121 , and the outer side surface is the side surface on the other side).
- the perpendicular parting surface PL 2 is located on an outer side surface of the transparent portion 121 (two side surfaces of the transparent portion 121 are an inner side surface and the outer side surface, the inner side surface is connected to the light absorbing portion 122 , and the outer side surface is the side surface on the other side).
- the horizontal parting surface PL 3 is located on the outer diameter surface 125 of the dual molded lens element 120 .
- Both of the perpendicular parting surface PL 1 and the axial connecting surface 126 are located on the outer side surface of the light absorbing portion 122 (that is, located on the same side of the dual molded lens element 120 ), and a vertical distance between the perpendicular parting surface PL 1 and the optical axis is larger than a vertical distance between the axial connecting surface 126 and the optical axis.
- Both of the perpendicular parting surface PL 2 and the axial connecting surface 127 are located on the outer side surface of the transparent portion 121 (that is, located on the same side of the dual molded lens element 120 ), and a vertical distance between the perpendicular parting surface PL 2 and the optical axis is larger than a vertical distance between the axial connecting surface 127 and the optical axis. Therefore, the dimensional accuracy of the lens can be increased by the perpendicular parting surfaces.
- the plastic material of the light absorbing portion 122 can be injected from the border between the transparent portion 121 and the light absorbing portion 122 , or the outer side of the dual molded lens element 120 .
- the plastic material of the transparent portion 121 can be injected along the direction from the outer diameter surface to the optical axis.
- the material of the transparent portion 121 not only can be transparent PC with high refraction, such as Teijin SP-series, EP-series of MGC, but also can be Polyester, such as OKP-series of OGC, or others conventional optical plastic material.
- the material of the light absorbing portion 122 should correspond to the material of the transparent portion 121 , which can be black PC, such as Teijin L-1225Y, or the material which can be passed through by the infrared light (which is transparent to an infrared light).
- the material of the light absorbing portion 122 is not limited to black PC.
- the light absorbing portion 122 can be made of the material as the transparent portion 121 , and the material can be mixed with black material for producing the black plastic material as the material of the light absorbing portion 122 .
- the proper IR cut filter can be provided, and will not affect the property provided by the light absorbing portion.
- FIG. 5 is an enlarged view of a dual molded lens element 220 of an optical lens assembly according to the 2nd embodiment of the present disclosure.
- the optical lens assembly (not shown) is applied to a camera module of a mobile phone, wherein the camera module of the mobile phone includes the components which are the same with the camera module of the mobile phone according to the 1st embodiment, and will not state again herein.
- the optical lens assembly includes at least one lens element and a dual molded lens element 220 , wherein the arrangement of the lens element and the dual molded lens element 220 is the same with the arrangement shown in FIG. 1 , and will not describe again herein.
- the dual molded lens element 220 has two portions made of different plastic materials with different colors, which are a transparent portion 221 and a light absorbing portion 222 .
- the transparent portion 221 has an optical effective region 221 a , wherein the transparent portion 221 is made of transparent PC with high refraction.
- the light absorbing portion 222 is made of PC which can absorb visible light and be passed through by the infrared light (which is transparent to an infrared light). That is, the dual molded lens element 220 has two plastic parts with different colors by different color arrangement of the transparent portion 221 and the light absorbing portion 222 .
- Two side surfaces of the dual molded lens element 220 are a first side surface 223 and a second side surface 224 , and the dual molded lens element 220 has an outer diameter surface 225 connecting the first side surface 223 and a second side surface 224 .
- the transparent portion 221 is arranged from an optical effective region of the dual molded lens element 220 to the outer diameter surface 225 (that is, from the optical effective region 221 a to the outer diameter surface 225 ), and the outer diameter surface 225 consists of the transparent portion 221 and the light absorbing portion 222 . Therefore, the dual molded lens element 220 can be connected to other element of the optical lens assembly, via the outer diameter surface 225 , so as to align the center of each lens element during arrangement.
- the light absorbing portion 222 is located on one side surface of the dual molded lens element 220 (in the 2nd embodiment, the light absorbing portion 222 is located on the first side surface 223 of the dual molded lens element 220 ).
- the homogeneity in the dual molded lens element can be confirmed by the non-operating wave band by different transmittances of the transparent portion 221 and the light absorbing portion 222 . Therefore, the yield rate of the manufacturing can be increased by the precise location of the light absorbing portion.
- the optical lens assembly includes two axial connecting surfaces 226 , 227 located on two sides of the dual molded lens element 220 , respectively, which are disposed on the light absorbing portion 222 and the transparent portion 221 , respectively.
- the axial connecting surfaces 226 , 227 are for connecting the lens elements (such as a first lens element and a third lens element) which are adjacent thereto. Hence, a center of the dual molded lens element 220 and the centers of the lens elements are aligned on the optical axis.
- the optical lens assembly includes two horizontal connecting surfaces 228 , 229 located on two sides of the dual molded lens element 220 , respectively, which are disposed on the light absorbing portion 222 and the transparent portion 221 , respectively.
- the horizontal connecting surfaces 228 , 229 are for connecting the lens elements (such as a first lens element and a third lens element) which are adjacent thereto. Therefore, axial distances between the dual molded lens element 220 and the lens elements are formed.
- the light absorbing portion 220 further includes two perpendicular parting surfaces PL 1 , PL 2 and a horizontal parting surface PL 3 .
- the perpendicular parting surface PL 1 is located on an outer side surface of the light absorbing portion 222 and is on the same side with the axial connecting surface 226 , and a vertical distance between the perpendicular parting surface PL 1 and the optical axis is larger than a vertical distance between the axial connecting surface 226 and the optical axis.
- the perpendicular parting surface PL 2 is located on an outer side surface of the transparent portion 221 and is on the same side with the axial connecting surface 227 , and a vertical distance between the perpendicular parting surface PL 2 and the optical axis is larger than a vertical distance between the axial connecting surface 227 and the optical axis.
- the definitions of the parameters ⁇ 1 , ⁇ 2 , ⁇ po and ⁇ D of the dual molded lens element 220 shown in the following table are the same as those stated in the 1st embodiment and FIG. 3 , so an explanation in this regard will not be provided again.
- the values of the parameters and condition of the 2nd embodiment are stated as following table.
- the manufacturing method of the dual molded lens element 220 is the same with the 1st embodiment shown in FIGS. 4A and 4B , and will not describe again herein.
- FIG. 6 is an enlarged view of a dual molded lens element 310 of an optical lens assembly according to the 3rd embodiment of the present disclosure.
- the optical lens assembly (not shown) is applied to a camera module of a mobile phone, wherein the camera module of the mobile phone includes the components which are the same with the camera module of the mobile phone according to the 1st embodiment, and will not state again herein.
- the optical lens assembly includes at least one lens element and a dual molded lens element 310 , wherein the dual molded lens element 310 is nearest to the first side of the optical lens assembly among all lens elements thereof as a first lens element.
- the arrangement of the lens element and other components is the same with the arrangement shown in FIG. 1 , and will not describe again herein.
- the dual molded lens element 310 has two portions made of different plastic materials with different colors, which are a transparent portion 311 and a light absorbing portion 312 .
- the transparent portion 311 has an optical effective region 311 a , wherein the transparent portion 311 is made of COC.
- the light absorbing portion 312 is located on the second side surface 314 of the dual molded lens element 310 , and is made of black COC. That is, the dual molded lens element 310 has two plastic parts with different colors by different color arrangement of the transparent portion 311 and the light absorbing portion 312 .
- Two side surfaces of the dual molded lens element 310 are a first side surface 313 and the second side surface 314 , and the dual molded lens element 310 has an outer diameter surface 315 connecting the first side surface 313 and the second side surface 314 .
- the transparent portion 311 is arranged from an optical effective region of the dual molded lens element 310 to the outer diameter surface 315 (that is, from the optical effective region 311 a to the outer diameter surface 315 ), and the outer diameter surface 315 consists of the transparent portion 311 . Therefore, the dual molded lens element 310 can be connected to other element of the optical lens assembly, such as a lens barrel, via the outer diameter surface 315 , so as to align the center of each lens element during arrangement.
- the dual molded lens element 310 includes an axial connecting surface 316 and a horizontal connecting surface 318 , wherein the axial connecting surface 316 and the horizontal connecting surface 318 are located on the light absorbing portion 312 and for connecting the lens elements (such as a second lens element) which are adjacent thereto.
- the lens elements such as a second lens element
- a center of the dual molded lens element 310 and the center of the adjacent lens element are aligned on the optical axis, and the axial distance between the dual molded lens element 310 and the adjacent lens element is formed.
- the dual molded lens element 310 includes a perpendicular parting surface PL 1 located on an outer side surface of the light absorbing portion 312 and is on the same side with the axial connecting surface 316 , wherein a vertical distance between the perpendicular parting surface PL 1 and the optical axis is larger than a vertical distance between the axial connecting surface 316 and the optical axis.
- the definitions of the parameters ⁇ , ⁇ po and ⁇ D of the dual molded lens element 310 shown in the following table are the same as those stated in the 1st embodiment and FIG. 3 , so an explanation in this regard will not be provided again.
- the dual molded lens element 310 includes one axial connecting surface 316 , so that there is only one angle ⁇ , and the definition and the location of ⁇ are the same with ⁇ 1 of the 1st embodiment.
- the values of the parameters and condition of the 3rd embodiment are stated as following table.
- the manufacturing method of the dual molded lens element 310 is the same with the 1st embodiment shown in FIGS. 4A and 4B , and will not describe again herein.
- FIG. 7 is an enlarged view of a dual molded lens element 440 of an optical lens assembly according to the 4th embodiment of the present disclosure.
- the optical lens assembly (not shown) is applied to a camera module of a mobile phone, wherein the camera module of the mobile phone includes the components which are the same with the camera module of the mobile phone according to the 1st embodiment, and will not state again herein.
- the optical lens assembly includes four lens elements and a dual molded lens element 440 , wherein the dual molded lens element 440 is located as the fourth lens element from the first side to the second side of the optical lens assembly among all lens elements thereof.
- the arrangement of the lens elements and other components is the same with the arrangement shown in FIG. 1 , and will not describe again herein.
- the dual molded lens element 440 has two portions made of different plastic materials with different colors, which are a transparent portion 441 and a light absorbing portion 442 .
- the transparent portion 441 has an optical effective region 441 a , wherein the transparent portion 441 is made of COC.
- the light absorbing portion 442 is located on the first side surface 443 of the dual molded lens element 440 , and is made of black COC. That is, the dual molded lens element 440 has two plastic parts with different colors by different color arrangement of the transparent portion 441 and the light absorbing portion 442 .
- Two side surfaces of the dual molded lens element 440 are the first side surface 443 and a second side surface 444 , and the dual molded lens element 440 has an outer diameter surface 445 connecting the first side surface 443 and the second side surface 444 .
- the transparent portion 441 is arranged from an optical effective region of the dual molded lens element 440 to the outer diameter surface 445 (that is, from the optical effective region 441 a to the outer diameter surface 445 ), and the outer diameter surface 445 consists of the transparent portion 441 . Therefore, the dual molded lens element 440 can be connected to other element of the optical lens assembly, such as a lens barrel, via the outer diameter surface 445 , so as to align the center of each lens element during arrangement.
- the definitions of the parameters ⁇ po and ⁇ D of the dual molded lens element 440 shown in the following table are the same as those stated in the 1st embodiment and FIG. 3 , so an explanation in this regard will not be provided again.
- the values of the parameter and condition of the 4th embodiment are stated as following table.
- the manufacturing method of the dual molded lens element 440 is the same with the 1st embodiment shown in FIGS. 4A and 4B , and will not describe again herein.
- FIG. 8 is a schematic view of a camera module 50 of an electronic device according to the 5th embodiment of the present disclosure.
- the electronic device (not shown) is a mobile phone, and the camera module 50 is applied to the mobile phone.
- the camera module 50 includes an optical lens assembly 100 and an image sensor 160 , wherein the image sensor 160 is disposed on an image surface (not shown) of the optical lens assembly 100 .
- the optical lens assembly 100 is stated as the optical lens assembly 100 according to the 1st embodiment in FIG. 1 , and will not be described again herein.
- the optical lens assembly is not be limited to the optical lens assembly having five lens elements with refractive power, the number of the lens elements with refractive power of the optical lens assembly can also be three, four, five, six or others.
- the electronic device is not limited to mobile phones, and can also be other portable electronic devices, such as tablet computers.
- the optical lens assembly with the dual molded lens element can decrease the stray light for enhancing the image quality; however, the dual molded lens element is preferably arranged as the second lens element from an object side to an image side, or the second lens element from the image side to the object side. Further, when the optical lens assembly provides the wider field of view, the dual molded lens element can be arranged as the first lens element from the object side to the image side for increasing the characteristic.
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Abstract
Description
- The present application is a continuation of the application Ser. No. 15/942,856, filed on Apr. 2, 2018, which is a continuation of the application Ser. No. 15/584,058, filed on May 2, 2017, U.S. Pat. No. 9,971,129 issued on May 15, 2018, which is a continuation of the application Ser. No. 14/800,491, filed on Jul. 15, 2015, U.S. Pat. No. 9,671,527 issued on Jun. 6, 2017, and claims priority to Taiwan application serial number 104113416, filed Apr. 27, 2015, and Taiwan Application Serial Number 104115266, filed May 13, 2015, the entire contents of which are hereby incorporated herein by reference.
- The present disclosure relates to an optical lens assembly with dual molded lens element. More particularly, the present disclosure relates to an optical lens assembly applicable to an electronic device.
- In the field of portable photographing devices, such as mobile phones, the size, thickness and weight of the optical lens assembly thereof are decreased for satisfying the demand of miniaturization, however, the amount of the components in photographing devices is increased for enhancing the image quality at the same time. Hence, it is difficult for effectively controlling the stray light without decreasing the aligning precision of the lens elements.
- In the conventional lens assembling structure for the compact lens assembly, such as U.S. Pat. No. 6,819,508, the aligning precision of the lens assembly can be maintained. When the stray light is generated in the lens assembly, the ink coating or the light shutter is usually used. However, both of the ink coating or the light shutter would affect the lens assembling structure for the aligning precision of the lens assembly.
- In detail, it is difficult to control the surface shape and size by the general ink coating process under the compact size, thus the micron meter or above variation would be generated on the portion with ink coating. Therefore, the aligning precision of the lens assembly would be decreased or the lens element thereof would be tilted when the assembling surface of the lens element with ink coating, and the image quality would be degraded. Furthermore, when the ink coating is coated on the inner corner portion, the gap would easily be generated and the stray light would be further induced.
- The light shutter can provide expert dimensional accuracy controlling ability than the ink coating which is applied to the lens assembly for avoiding the stray light. However, the light shutter has larger reflectivity, and the covered area is decreased when the shutter is directly embedded with the lens element, and the ability for controlling the stray light would be restricted.
- Therefore, it is important for providing the lens assembly which satisfies both of the aligning precision of the lens assembly and the demand of the stray light control.
- According to one aspect of the present disclosure, an optical lens assembly, which has an optical axis, includes at least one lens element and at least one dual molded lens element. The dual molded lens element has two plastic parts with different colors, is formed by an injection molding method, and includes a transparent portion, a light absorbing portion and at least one axial connecting surface. The axial connecting surface is located on one side of the dual molded lens element for connecting the lens element which is adjacent to the axial connecting surface, thus a center of the dual molded lens element and a center of the lens element are aligned.
- According to another aspect of the present disclosure, an electronic device includes a camera module. The camera module includes the optical lens assembly according to the aforementioned aspect and an image sensor, wherein the image sensor is disposed on an image surface of the optical lens assembly.
- According to further another aspect of the present disclosure, an optical lens assembly, which has an optical axis, includes at least one dual molded lens element. The dual molded lens element has two plastic parts with different colors, and includes a transparent portion having an optical effective region and a light absorbing portion. The dual molded lens element has an outer diameter surface connecting a first side surface and a second side surface of the dual molded lens element, the transparent portion is arranged from an optical effective region of the dual molded lens element to the outer diameter surface and surrounds the dual molded lens element, thus the transparent portion is a part of the outer diameter surface, and the light absorbing portion is located on one of the first side surface and the second side surface of the dual molded lens element.
- According to still another aspect of the present disclosure, an electronic device includes a camera module. The camera module includes the optical lens assembly according to the aforementioned aspect and an image sensor, wherein the image sensor is disposed on an image surface of the optical lens assembly.
-
FIG. 1 is a schematic view of an optical lens assembly according to the 1st embodiment of the present disclosure; -
FIG. 2 is an enlarged view of the dual molded lens element of the optical lens assembly ofFIG. 1 ; -
FIG. 3 is a schematic view of parameters θ1, θ2, φpo and φD of the dual molded lens element of the optical lens assembly ofFIG. 1 ; -
FIG. 4A is a schematic view of the first step of a manufacturing method for the dual molded lens element according to the 1st embodiment of the present disclosure; -
FIG. 4B is a schematic view of the second step of the manufacturing method for the dual molded lens element according to the 1st embodiment of the present disclosure; -
FIG. 5 is an enlarged view of a dual molded lens element of an optical lens assembly according to the 2nd embodiment of the present disclosure; -
FIG. 6 is an enlarged view of a dual molded lens element of an optical lens assembly according to the 3rd embodiment of the present disclosure; -
FIG. 7 is an enlarged view of a dual molded lens element of an optical lens assembly according to the 4th embodiment of the present disclosure; and -
FIG. 8 is a schematic view of a camera module of an electronic device according to the 5th embodiment of the present disclosure. -
FIG. 1 is a schematic view of anoptical lens assembly 100 according to the 1st embodiment of the present disclosure. InFIG. 1 , theoptical lens assembly 100 is applied to a camera module of a mobile phone, wherein the camera module of the mobile phone includes theoptical lens assembly 100, an image sensor (not shown) and an IR-cut filter (not shown). Theoptical lens assembly 100 includes five lens elements with refractive power, in order from a first side to a second side, afirst lens element 110, a dual molded lens element 120 (a second lens element), athird lens element 130, afourth lens element 140 and afifth lens element 150. -
FIG. 2 is an enlarged view of the dual moldedlens element 120 of theoptical lens assembly 100 ofFIG. 1 . In detail, the dual moldedlens element 120 is made of plastic material, and includes atransparent portion 121 and alight absorbing portion 122. Thetransparent portion 121 has an opticaleffective region 121 a, wherein thetransparent portion 121 is made of transparent PC (Polycarbonate) with high refraction. Thelight absorbing portion 122 is made of black PC. That is, the dual molded lens element has two plastic parts with different colors by different color arrangement of thetransparent portion 121 and thelight absorbing portion 122. - Two side surfaces of the dual molded
lens element 120 are afirst side surface 123 and asecond side surface 124, and the dual moldedlens element 120 has anouter diameter surface 125 connecting thefirst side surface 123 and asecond side surface 124. Thetransparent portion 121 is arranged from an optical effective region of the dual moldedlens element 120 to the outer diameter surface 125 (that is, from the opticaleffective region 121 a to the outer diameter surface 125), and theouter diameter surface 125 of the dual moldedlens element 120 includes at least an outer diameter surface of thetransparent portion 121 which is a part of theouter diameter surface 125. According to the 1st embodiment, theouter diameter surface 125 of the dual moldedlens element 120 is the outer diameter surface of thetransparent portion 121 which surrounds the dual molded lens element. Theouter diameter surface 125 may be an outer diameter assembling surface for connecting to a lens barrel. Therefore, the dual moldedlens element 120 can be connected to other element of the optical lens assembly, such as a lens barrel, via theouter diameter surface 125, so as to align the center of each lens element during arrangement. - The
light absorbing portion 122 is located on one side surface of the dual molded lens element 120 (in the 1st embodiment, thelight absorbing portion 122 is located on thefirst side surface 123 of the dual molded lens element 120). - The
optical lens assembly 100 can further include axial connecting surface, in the 1st embodiment, theoptical lens assembly 100 includes two axial connectingsurfaces lens element 120, respectively, which are disposed on thelight absorbing portion 122 and thetransparent portion 121, respectively. Theaxial connecting surfaces first lens element 110 and thethird lens element 130 which are adjacent thereto. Hence, a center of the dual moldedlens element 120 and the centers of the lens elements (thefirst lens element 110 and the third lens element 113) are aligned on the optical axis. - The
optical lens assembly 100 can further include at least one horizontal connecting surface, in the 1st embodiment, theoptical lens assembly 100 includes twohorizontal connecting surfaces lens element 120, respectively, which are disposed on thelight absorbing portion 122 and thetransparent portion 121, respectively. The horizontal connectingsurfaces first lens element 110 and thethird lens element 130 which are adjacent thereto. Therefore, axial distances between the dual moldedlens element 120 and the lens elements (thefirst lens element 110 and the third lens element 113) are formed. - The
optical lens assembly 100 can include at least one axial connecting surface, wherein when an angle between the axial connecting surface and the optical axis is θ, and the following condition is satisfied: 0 degrees<θ<40 degrees. Preferably, the following condition can be satisfied: 5 degrees<θ<31 degrees.FIG. 3 is a schematic view of parameters θ1, θ2, ϕ po and ϕD of the dual moldedlens element 120 of theoptical lens assembly 100 ofFIG. 1 . InFIG. 3 , according to the 1st embodiment, theoptical lens assembly 100 includes two axial connectingsurfaces surface 126 and the optical axis is θ1, and θ1=10 degrees; an angle between the axial connectingsurface 126 and the optical axis is θ2, and θ2=30 degrees. Therefore, the dual moldedlens element 120 can be stably connected to thefirst lens element 110 and thethird lens element 130 for aligning the center of the dual moldedlens element 120 to the centers of the adjacent lens elements. Moreover, the angels of the connecting surfaces of the lens elements which are adjacent and connected to the dual moldedlens element 120 would be adjusted with θ1 and θ2. - When an outer diameter of the dual molded
lens element 120 is φD, and an outer diameter of thelight absorbing portion 122 is φpo, the following conditions are satisfied: 2.5 mm<φD<8.0 mm; and 0.5<φpo/φD≤1.0. In the 1st embodiment, φD=3.76 mm, and φpo/φD=0.91. -
FIG. 4A is a schematic view of the first step of a manufacturing method for the dual moldedlens element 120 according to the 1st embodiment of the present disclosure.FIG. 4B is a schematic view of the second step of the manufacturing method for the dual moldedlens element 120 according to the 1st embodiment of the present disclosure. According to the first step ofFIG. 4A , thelight absorbing portion 122 is formed by an injection molding method in a mold cavity between amovable mold 610 and a firstfixed mold 620. Then, according to the second step ofFIG. 4B , themovable mold 610 is moved for forming the other mold cavity between themovable mold 610 and a secondfixed mold 630, that is, thelight absorbing portion 122 would be moved into the other mold cavity, and thetransparent portion 121 can be formed by another injection molding method in the other mold cavity. Hence, the dual moldedlens element 120 with two colors can be formed by twice injection molding methods with two kinds of plastic materials. - In general, after forming the dual molded lens element and separating the mold, the parting surfaces would be formed on the dual molded lens element, wherein the parting surface which is located on the outer diameter surface thereof and extends along the horizontal direction is a horizontal parting surface, and the parting surface which is located on the first side surface or the second side surface and extends along the perpendicular direction is a perpendicular parting surface.
- In the 1st embodiment, the dual molded
lens element 120 further includes two perpendicular parting surfaces PL1, PL2 and a horizontal parting surface PL3. The perpendicular parting surface PL1 is located on an outer side surface of the light absorbing portion 122 (two side surfaces of thelight absorbing portion 122 are an inner side surface and the outer side surface, the inner side surface is connected to thetransparent portion 121, and the outer side surface is the side surface on the other side). The perpendicular parting surface PL2 is located on an outer side surface of the transparent portion 121 (two side surfaces of thetransparent portion 121 are an inner side surface and the outer side surface, the inner side surface is connected to thelight absorbing portion 122, and the outer side surface is the side surface on the other side). The horizontal parting surface PL3 is located on theouter diameter surface 125 of the dual moldedlens element 120. Both of the perpendicular parting surface PL1 and the axial connectingsurface 126 are located on the outer side surface of the light absorbing portion 122 (that is, located on the same side of the dual molded lens element 120), and a vertical distance between the perpendicular parting surface PL1 and the optical axis is larger than a vertical distance between the axial connectingsurface 126 and the optical axis. Both of the perpendicular parting surface PL2 and the axial connectingsurface 127 are located on the outer side surface of the transparent portion 121 (that is, located on the same side of the dual molded lens element 120), and a vertical distance between the perpendicular parting surface PL2 and the optical axis is larger than a vertical distance between the axial connectingsurface 127 and the optical axis. Therefore, the dimensional accuracy of the lens can be increased by the perpendicular parting surfaces. - Moreover, in the first step of the aforementioned manufacturing method, the plastic material of the
light absorbing portion 122 can be injected from the border between thetransparent portion 121 and thelight absorbing portion 122, or the outer side of the dual moldedlens element 120. In the second step of the aforementioned manufacturing method, the plastic material of thetransparent portion 121 can be injected along the direction from the outer diameter surface to the optical axis. - Furthermore, the material of the
transparent portion 121 not only can be transparent PC with high refraction, such as Teijin SP-series, EP-series of MGC, but also can be Polyester, such as OKP-series of OGC, or others conventional optical plastic material. The material of thelight absorbing portion 122 should correspond to the material of thetransparent portion 121, which can be black PC, such as Teijin L-1225Y, or the material which can be passed through by the infrared light (which is transparent to an infrared light). Of course, the material of thelight absorbing portion 122 is not limited to black PC. When thetransparent portion 121 is made of the material excluding PC, such as COC, COP, PMMA etc., thelight absorbing portion 122 can be made of the material as thetransparent portion 121, and the material can be mixed with black material for producing the black plastic material as the material of thelight absorbing portion 122. According to the camera module of the present disclosure or the conventional camera module, the proper IR cut filter can be provided, and will not affect the property provided by the light absorbing portion. -
FIG. 5 is an enlarged view of a dual moldedlens element 220 of an optical lens assembly according to the 2nd embodiment of the present disclosure. InFIG. 5 , the optical lens assembly (not shown) is applied to a camera module of a mobile phone, wherein the camera module of the mobile phone includes the components which are the same with the camera module of the mobile phone according to the 1st embodiment, and will not state again herein. In the 2nd embodiment, the optical lens assembly includes at least one lens element and a dual moldedlens element 220, wherein the arrangement of the lens element and the dual moldedlens element 220 is the same with the arrangement shown inFIG. 1 , and will not describe again herein. - According to the 2nd embodiment in
FIG. 5 , the dual moldedlens element 220 has two portions made of different plastic materials with different colors, which are atransparent portion 221 and alight absorbing portion 222. Thetransparent portion 221 has an opticaleffective region 221 a, wherein thetransparent portion 221 is made of transparent PC with high refraction. Thelight absorbing portion 222 is made of PC which can absorb visible light and be passed through by the infrared light (which is transparent to an infrared light). That is, the dual moldedlens element 220 has two plastic parts with different colors by different color arrangement of thetransparent portion 221 and thelight absorbing portion 222. - Two side surfaces of the dual molded
lens element 220 are afirst side surface 223 and asecond side surface 224, and the dual moldedlens element 220 has anouter diameter surface 225 connecting thefirst side surface 223 and asecond side surface 224. Thetransparent portion 221 is arranged from an optical effective region of the dual moldedlens element 220 to the outer diameter surface 225 (that is, from the opticaleffective region 221 a to the outer diameter surface 225), and theouter diameter surface 225 consists of thetransparent portion 221 and thelight absorbing portion 222. Therefore, the dual moldedlens element 220 can be connected to other element of the optical lens assembly, via theouter diameter surface 225, so as to align the center of each lens element during arrangement. - The
light absorbing portion 222 is located on one side surface of the dual molded lens element 220 (in the 2nd embodiment, thelight absorbing portion 222 is located on thefirst side surface 223 of the dual molded lens element 220). During the manufacturing and assembling, the homogeneity in the dual molded lens element can be confirmed by the non-operating wave band by different transmittances of thetransparent portion 221 and thelight absorbing portion 222. Therefore, the yield rate of the manufacturing can be increased by the precise location of the light absorbing portion. - In the 2nd embodiment, the optical lens assembly includes two axial connecting
surfaces lens element 220, respectively, which are disposed on thelight absorbing portion 222 and thetransparent portion 221, respectively. The axial connectingsurfaces lens element 220 and the centers of the lens elements are aligned on the optical axis. - In the 2nd embodiment, the optical lens assembly includes two horizontal connecting
surfaces lens element 220, respectively, which are disposed on thelight absorbing portion 222 and thetransparent portion 221, respectively. The horizontal connectingsurfaces lens element 220 and the lens elements are formed. - In the 2nd embodiment, the
light absorbing portion 220 further includes two perpendicular parting surfaces PL1, PL2 and a horizontal parting surface PL3. The perpendicular parting surface PL1 is located on an outer side surface of thelight absorbing portion 222 and is on the same side with the axial connectingsurface 226, and a vertical distance between the perpendicular parting surface PL1 and the optical axis is larger than a vertical distance between the axial connectingsurface 226 and the optical axis. The perpendicular parting surface PL2 is located on an outer side surface of thetransparent portion 221 and is on the same side with the axial connectingsurface 227, and a vertical distance between the perpendicular parting surface PL2 and the optical axis is larger than a vertical distance between the axial connectingsurface 227 and the optical axis. - In the 2nd embodiment, the definitions of the parameters θ1, θ2, φpo and φD of the dual molded
lens element 220 shown in the following table are the same as those stated in the 1st embodiment andFIG. 3 , so an explanation in this regard will not be provided again. The values of the parameters and condition of the 2nd embodiment are stated as following table. -
θ1(deg.) θ2(deg.) ϕpo(mm) ϕpo/ϕD 20 20 3.76 1.0 - Moreover, the manufacturing method of the dual molded
lens element 220 is the same with the 1st embodiment shown inFIGS. 4A and 4B , and will not describe again herein. -
FIG. 6 is an enlarged view of a dual moldedlens element 310 of an optical lens assembly according to the 3rd embodiment of the present disclosure. InFIG. 6 , the optical lens assembly (not shown) is applied to a camera module of a mobile phone, wherein the camera module of the mobile phone includes the components which are the same with the camera module of the mobile phone according to the 1st embodiment, and will not state again herein. In the 3rd embodiment, the optical lens assembly includes at least one lens element and a dual moldedlens element 310, wherein the dual moldedlens element 310 is nearest to the first side of the optical lens assembly among all lens elements thereof as a first lens element. In the optical lens assembly of the 3rd embodiment, the arrangement of the lens element and other components is the same with the arrangement shown inFIG. 1 , and will not describe again herein. - According to the 3rd embodiment in
FIG. 6 , the dual moldedlens element 310 has two portions made of different plastic materials with different colors, which are atransparent portion 311 and alight absorbing portion 312. Thetransparent portion 311 has an opticaleffective region 311 a, wherein thetransparent portion 311 is made of COC. Thelight absorbing portion 312 is located on thesecond side surface 314 of the dual moldedlens element 310, and is made of black COC. That is, the dual moldedlens element 310 has two plastic parts with different colors by different color arrangement of thetransparent portion 311 and thelight absorbing portion 312. - Two side surfaces of the dual molded
lens element 310 are afirst side surface 313 and thesecond side surface 314, and the dual moldedlens element 310 has anouter diameter surface 315 connecting thefirst side surface 313 and thesecond side surface 314. Thetransparent portion 311 is arranged from an optical effective region of the dual moldedlens element 310 to the outer diameter surface 315 (that is, from the opticaleffective region 311 a to the outer diameter surface 315), and theouter diameter surface 315 consists of thetransparent portion 311. Therefore, the dual moldedlens element 310 can be connected to other element of the optical lens assembly, such as a lens barrel, via theouter diameter surface 315, so as to align the center of each lens element during arrangement. - In the 3rd embodiment, the dual molded
lens element 310 includes an axial connectingsurface 316 and a horizontal connectingsurface 318, wherein the axial connectingsurface 316 and the horizontal connectingsurface 318 are located on thelight absorbing portion 312 and for connecting the lens elements (such as a second lens element) which are adjacent thereto. Hence, a center of the dual moldedlens element 310 and the center of the adjacent lens element are aligned on the optical axis, and the axial distance between the dual moldedlens element 310 and the adjacent lens element is formed. - In the 3rd embodiment, the dual molded
lens element 310 includes a perpendicular parting surface PL1 located on an outer side surface of thelight absorbing portion 312 and is on the same side with the axial connectingsurface 316, wherein a vertical distance between the perpendicular parting surface PL1 and the optical axis is larger than a vertical distance between the axial connectingsurface 316 and the optical axis. - In the 3rd embodiment, the definitions of the parameters θ, φpo and φD of the dual molded
lens element 310 shown in the following table are the same as those stated in the 1st embodiment andFIG. 3 , so an explanation in this regard will not be provided again. Especially, in the 3rd embodiment, the dual moldedlens element 310 includes one axial connectingsurface 316, so that there is only one angle θ, and the definition and the location of θ are the same with θ1 of the 1st embodiment. The values of the parameters and condition of the 3rd embodiment are stated as following table. -
θ(deg.) ϕpo(mm) ϕpo/ϕD 10 3.6 0.9 - Moreover, the manufacturing method of the dual molded
lens element 310 is the same with the 1st embodiment shown inFIGS. 4A and 4B , and will not describe again herein. -
FIG. 7 is an enlarged view of a dual moldedlens element 440 of an optical lens assembly according to the 4th embodiment of the present disclosure. InFIG. 7 , the optical lens assembly (not shown) is applied to a camera module of a mobile phone, wherein the camera module of the mobile phone includes the components which are the same with the camera module of the mobile phone according to the 1st embodiment, and will not state again herein. In the 4th embodiment, the optical lens assembly includes four lens elements and a dual moldedlens element 440, wherein the dual moldedlens element 440 is located as the fourth lens element from the first side to the second side of the optical lens assembly among all lens elements thereof. In the optical lens assembly of the 4th embodiment, the arrangement of the lens elements and other components is the same with the arrangement shown inFIG. 1 , and will not describe again herein. - According to the 4th embodiment in
FIG. 7 , the dual moldedlens element 440 has two portions made of different plastic materials with different colors, which are atransparent portion 441 and alight absorbing portion 442. Thetransparent portion 441 has an opticaleffective region 441 a, wherein thetransparent portion 441 is made of COC. Thelight absorbing portion 442 is located on thefirst side surface 443 of the dual moldedlens element 440, and is made of black COC. That is, the dual moldedlens element 440 has two plastic parts with different colors by different color arrangement of thetransparent portion 441 and thelight absorbing portion 442. - Two side surfaces of the dual molded
lens element 440 are thefirst side surface 443 and asecond side surface 444, and the dual moldedlens element 440 has anouter diameter surface 445 connecting thefirst side surface 443 and thesecond side surface 444. Thetransparent portion 441 is arranged from an optical effective region of the dual moldedlens element 440 to the outer diameter surface 445 (that is, from the opticaleffective region 441 a to the outer diameter surface 445), and theouter diameter surface 445 consists of thetransparent portion 441. Therefore, the dual moldedlens element 440 can be connected to other element of the optical lens assembly, such as a lens barrel, via theouter diameter surface 445, so as to align the center of each lens element during arrangement. - In the 4th embodiment, the definitions of the parameters φpo and φD of the dual molded
lens element 440 shown in the following table are the same as those stated in the 1st embodiment andFIG. 3 , so an explanation in this regard will not be provided again. The values of the parameter and condition of the 4th embodiment are stated as following table. -
ϕpo(mm) ϕpo/ϕD 4.78 0.94 - Moreover, the manufacturing method of the dual molded
lens element 440 is the same with the 1st embodiment shown inFIGS. 4A and 4B , and will not describe again herein. -
FIG. 8 is a schematic view of acamera module 50 of an electronic device according to the 5th embodiment of the present disclosure. InFIG. 8 , the electronic device (not shown) is a mobile phone, and thecamera module 50 is applied to the mobile phone. Thecamera module 50 includes anoptical lens assembly 100 and animage sensor 160, wherein theimage sensor 160 is disposed on an image surface (not shown) of theoptical lens assembly 100. In the 5th embodiment, theoptical lens assembly 100 is stated as theoptical lens assembly 100 according to the 1st embodiment inFIG. 1 , and will not be described again herein. - Furthermore, in the present disclosure, the optical lens assembly is not be limited to the optical lens assembly having five lens elements with refractive power, the number of the lens elements with refractive power of the optical lens assembly can also be three, four, five, six or others. The electronic device is not limited to mobile phones, and can also be other portable electronic devices, such as tablet computers.
- Moreover, in the present disclosure, the optical lens assembly with the dual molded lens element can decrease the stray light for enhancing the image quality; however, the dual molded lens element is preferably arranged as the second lens element from an object side to an image side, or the second lens element from the image side to the object side. Further, when the optical lens assembly provides the wider field of view, the dual molded lens element can be arranged as the first lens element from the object side to the image side for increasing the characteristic.
- The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. It is to be noted that the tables show different data of the different embodiments; however, the data of the different embodiments are obtained from experiments. The embodiments were chosen and described in order to best explain the principles of the disclosure and its practical applications, to thereby enable others skilled in the art to best utilize the disclosure and various embodiments with various modifications as are suited to the particular use contemplated. The embodiments depicted above and the appended drawings are exemplary and are not intended to be exhaustive or to limit the scope of the present disclosure to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings.
Claims (10)
0 degrees<θ<40 degrees.
5 degrees<θ<31 degrees.
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Also Published As
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US20170235100A1 (en) | 2017-08-17 |
US10288852B2 (en) | 2019-05-14 |
US20180224632A1 (en) | 2018-08-09 |
TWI581030B (en) | 2017-05-01 |
TW201638619A (en) | 2016-11-01 |
US9971129B2 (en) | 2018-05-15 |
US20160313472A1 (en) | 2016-10-27 |
US9671527B2 (en) | 2017-06-06 |
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