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WO2025178350A1 - Module de caméra - Google Patents

Module de caméra

Info

Publication number
WO2025178350A1
WO2025178350A1 PCT/KR2025/002354 KR2025002354W WO2025178350A1 WO 2025178350 A1 WO2025178350 A1 WO 2025178350A1 KR 2025002354 W KR2025002354 W KR 2025002354W WO 2025178350 A1 WO2025178350 A1 WO 2025178350A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
groove
substrate
camera module
optical axis
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.)
Pending
Application number
PCT/KR2025/002354
Other languages
English (en)
Korean (ko)
Inventor
조인희
오준재
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Innotek Co Ltd
Original Assignee
LG Innotek Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LG Innotek Co Ltd filed Critical LG Innotek Co Ltd
Publication of WO2025178350A1 publication Critical patent/WO2025178350A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0006—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/52—Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H05K7/205—Heat-dissipating body thermally connected to heat generating element via thermal paths through printed circuit board [PCB]

Definitions

  • This embodiment relates to a camera module.
  • ultra-small camera modules have been developed and are widely used in small electronic products such as smartphones, laptops, and game consoles.
  • miniature cameras are increasingly being used not only in small electronic devices but also in vehicles. Examples include black box cameras for vehicle protection or to collect objective data on traffic accidents, rearview cameras that allow drivers to monitor blind spots at the rear of the vehicle, ensuring safety when backing up, and perimeter cameras that monitor the vehicle's surroundings.
  • a camera includes a lens, a lens barrel that accommodates the lens, an image sensor that converts an image of a subject captured by the lens into an electrical signal, and a printed circuit board on which the image sensor is mounted.
  • the housing which forms the exterior of the camera, is constructed with a sealed structure throughout to prevent contamination of internal components with foreign substances, including moisture.
  • Camera modules are placed on the exterior of the vehicle and are therefore highly exposed to the outside air. Therefore, frost, condensation, and freezing frequently occur on the lens during the winter. When frost, condensation, and freezing occur on the lens, the camera module's performance deteriorates significantly.
  • the present embodiment provides a camera module that can quickly remove frost or ice that occurs on a lens surface through a heating function and improve heat generation efficiency.
  • a camera module comprises: a first body; a lens module disposed within the first body, the lens module including a barrel and a lens disposed within the barrel; a substrate module disposed within the first body; and a heat generating member having one end connected to a surface of the lens and the other end connected to the substrate module to provide heat to the lens, wherein the lens includes an incident surface through which light is incident, an exit surface facing the incident surface through which the light is emitted, and a connecting surface connecting the incident surface and the exit surface, and a groove having a concave shape upwardly disposed in the connecting surface, and one end of the heat generating member is disposed in the groove.
  • the above-mentioned heating member includes an upper portion having a heating layer, the upper portion is coupled to the groove, and the optical axis direction length of the groove may be longer than the optical axis direction length of the upper portion.
  • the above connecting surface includes a first surface arranged on the inside with respect to the groove and a second surface arranged on the outside, and the length of the first surface may be shorter than the length of the second surface with respect to the direction perpendicular to the optical axis.
  • the length of the groove may be longer than the sum of the lengths of the first surface and the second surface.
  • the incident surface has a concave shape compared to other areas, and includes a coupling groove into which the retainer is coupled, and the coupling groove can be arranged to overlap with the groove in the direction of the optical axis.
  • It may include a molding member that fills the above home.
  • the bottom surface of the above groove may be a curved surface with a central region concave upward, and the upper surface of the heating member in contact with the bottom surface of the above groove may be a curved surface.
  • the bottom surface of the above groove is an inclined surface, and the bottom surface of the above groove may have an acute angle with respect to an imaginary line perpendicular to the optical axis direction.
  • the upper surface of the heating member facing the bottom surface of the above home may be an inclined surface.
  • the above connecting surface may be placed outside an area forming the angle of view of the lens.
  • the bonding strength between the heat generating member and the lens can be improved by the bonding structure of the heat generating member and the lens through the home, and since the heat generated from the heat generating member can be easily transferred to the entire area of the lens, there is an advantage in that the lens can be heated more uniformly.
  • Figure 1 is a perspective view of a vehicle according to an embodiment of the present invention.
  • Figure 2 is a cross-sectional view of a camera module according to an embodiment of the present invention.
  • Figure 3 is a plan view showing one area of a heating member according to an embodiment of the present invention.
  • Figure 4 is a drawing illustrating A-A' of Figure 3.
  • Figure 5 is a cross-sectional view showing the combined structure of a lens and a heating member according to an embodiment of the present invention.
  • FIG. 6 is a drawing illustrating a first modified example of a lens and heat-generating member combination structure according to an embodiment of the present invention.
  • FIG. 7 is a drawing illustrating a second modified example of a lens and heat-generating member combination structure according to an embodiment of the present invention.
  • a component when a component is described as being 'connected', 'coupled', or 'connected' to another component, it may include not only cases where the component is 'connected', 'coupled', or 'connected' directly to the other component, but also cases where the component is 'connected', 'coupled', or 'connected' by another component between the component and the other component.
  • “above” or “below” when described as being formed or arranged “above” or “below” each component, “above” or “below” includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as “above” or “below,” the meaning may include not only the upward direction but also the downward direction based on one component.
  • optical axis direction used below is defined as the optical axis direction of the lens. Meanwhile, “optical axis direction” may correspond to "up-down direction”, “z-axis direction”, etc.
  • Figure 1 is a perspective view of a vehicle according to an embodiment of the present invention.
  • a vehicle (1) may include a body (2), a door (3), glass (4), a headlamp (5), a taillamp (6), and a camera module (10).
  • the above body (2) may be an exterior member of the vehicle (1).
  • the body (2) may have various forms, such as a frame type and a monocoque type.
  • One or more doors (3) may be coupled to a side of the body (2).
  • the glass (4) may be coupled to the front and rear (where the pillar is formed) of the upper portion of the body (2) and the door (3).
  • the headlamp (5) may be mounted on the front of the lower portion of the body (2).
  • the taillamp (6) may be mounted on the rear of the lower portion of the body (2).
  • a camera module (10) may be installed on the side of the body (2) or on a door positioned at the front of one or more of the doors (3).
  • the camera module (10) may be installed in front of the glass (4) coupled to the door (3). That is, in the vehicle (1) of the present embodiment, the side mirror may be replaced with the camera module (10).
  • the above camera module (10) can capture images of both rear sides of the vehicle. Images captured by the camera module (10) can be electrically connected to a display unit (not shown) via an electronic control unit (ECU) or the like. Accordingly, images captured by the camera module (10) can be controlled by the electronic control unit (ECU) and played back on the display unit.
  • ECU electronice control unit
  • An interior space for the driver can be formed inside the body (2).
  • a display unit can be installed inside the body (2).
  • the display unit can output an image captured by the camera module (10).
  • the display unit can be installed on a dashboard (not shown) inside the body (2).
  • the installation form of the camera module (10) in the vehicle (1) described above is exemplary, and the camera module (10) can be used in one or more of the front camera, side camera, rear camera, and black box of the vehicle (1).
  • FIG. 2 is a cross-sectional view of a camera module according to an embodiment of the present invention
  • FIG. 3 is a plan view showing an area of a heat generating member according to an embodiment of the present invention
  • FIG. 4 is a drawing taken along line A-A' of FIG. 3
  • FIG. 5 is a cross-sectional view showing a combined structure of a lens and a heat generating member according to an embodiment of the present invention.
  • a camera module (10) may include a first body (100), a second body (200), a lens module (300), a lens holder (400), a substrate module (500), and a heating member (700).
  • the first body (100) may form the outer shape of the camera module (10).
  • the first body (100) may be named any one of a front body, an upper housing, and a first housing.
  • a space may be formed inside the first body (100) so that the lens module (300), the lens holder (400), and the substrate module (500) are arranged.
  • the above first body (100) may include a body portion (110) and a protrusion portion (120).
  • the body portion (110) and the protrusion portion (120) may be formed integrally.
  • the body part (110) may be formed of a metal material.
  • the body part (110) may be placed on the second body (200).
  • the body part (110) may be coupled to the second body (200).
  • the lower end of the body part (110) may be fixed on the second body (200).
  • the body part (110) may be coupled to the second body (200) by welding.
  • the body part (110) may be coupled to the second body (200) by adhesive or fusion.
  • the body part (110) may be formed in a rectangular shape with an open bottom. At this time, the corners of the body part (110) may be formed to be rounded.
  • the body part (110) may include an upper plate (112) and a first side plate (114) extending downward from an edge of the upper plate (112).
  • the upper plate (112) may be formed in a rectangular shape.
  • the upper plate (112) may extend outward from the lower outer surface of the protrusion (120).
  • the first side plate (114) may extend downward from the outer edge of the upper plate (112).
  • the first side plates (114) may be provided in plurality.
  • the first side plates (114) may include four side plates.
  • the first side plates (114) may be formed in a square plate shape.
  • the first side plate (114) may include a first-first side plate, a first-second side plate, a first-third side plate positioned opposite the first-first side plate, and a first-fourth side plate positioned opposite the first-second side plate.
  • the first side plate (114) may include first-first to first-fourth corners positioned between the first-first to first-fourth side plates, respectively.
  • Each of the first-first to first-fourth corners may include a round shape at least in part.
  • a space portion that is separated from other areas may be formed on the inside of the above body portion (110).
  • the space portion may have an open bottom and an upper portion that may be covered by the protrusion (120) and the lower surface of the lens module (300).
  • the first body (100) may include a protrusion (120).
  • the protrusion (120) may be formed of a metal material.
  • the protrusion (120) may have a circular cross-sectional shape.
  • the protrusion (120) may be disposed on the body (110).
  • the protrusion (120) may extend upward from the upper surface of the body (110).
  • the protrusion (120) may be formed integrally with the body (110).
  • the protrusion (120) may be coupled to the body (110). In this case, the protrusion (120) may be fixed to the body (110) by an adhesive.
  • the protrusion (120) may accommodate the lens module (300) therein.
  • a space may be formed in the center of the protrusion (120) to which the lens module (300) is coupled.
  • the lens module (300) can be placed in the space within the above protrusion (120).
  • the camera module (10) may include the second body (200).
  • the second body (200) may be named as any one of a rear body, a lower housing, a second housing, and a rear cover.
  • the second body (200) may be formed in a rectangular shape with an open upper portion.
  • the second body (200) may be formed of a metal material.
  • the second body (200) may be placed below the first body (100).
  • the second body (200) may be coupled with the first body (100).
  • the second body (200) may form an internal space through coupling with the first body (100).
  • the second body (200) may include a space portion with an open upper surface.
  • the second body (200) may include the lower plate (220).
  • the lower plate (220) may face the upper plate (112) of the first body (100) in the optical axis direction.
  • the lower plate (220) may be spaced apart from the upper plate (112) of the first body (110) in the optical axis direction.
  • the lower plate (220) may be parallel to the upper plate (112) of the first body (100).
  • the lower plate (220) may be formed in a square shape. In this case, at least a portion of the corner of the lower plate (220) may include a round shape.
  • the second body (200) may include the second side plate (210).
  • the second side plate (210) may extend from the lower plate (220).
  • the second side plate (210) may extend upward from an outer edge of the lower plate (220).
  • a shield member (not shown) may be disposed on the second side plate (210).
  • the shield member may be in surface contact with an inner surface of the second side plate (210).
  • An upper end of the second side plate (210) may be coupled to the first body (100).
  • the inner surface of the second side plate (210) may be disposed to surround an outer surface of the first side plate (114).
  • the inner surface of the second side plate (210) and the outer surface of the first side plate (114) may be mutually coupled by at least one method selected from the group consisting of welding, adhesive, and fusion.
  • the camera module (10) may include a lens module (300).
  • the lens module (300) may be coupled to the first body (100).
  • the lens module (300) may be coupled to a hole of the protrusion (120). At least a portion of the lens module (300) may be disposed on the inside of the protrusion (120), and the remaining portion may be disposed to protrude upward from the first body (100).
  • the lens module (300) may include a barrel (310) and one or more lenses (330) accommodated within the barrel (310).
  • the lenses (330) may be arranged to face an image sensor within a substrate module (500) to be described later in the optical axis direction.
  • the lenses (330) may be aligned with the image sensor along the optical axis.
  • the lenses (330) may be provided in plurality and may be arranged to be spaced apart from each other along the optical axis direction within the barrel (310).
  • the lenses (330) may include an outermost lens (340) and a rear lens (390) arranged behind the outermost lens (340). In FIG.
  • the rear lens (390) is illustrated as a single lens as an example, but this is not limited thereto, and the rear lenses (390) may also be provided in plurality and arranged along the optical axis direction within the barrel (310). At least a portion of the outermost lens (340) may protrude upward from the camera module (10).
  • the above barrel (310) may include a space with upper and lower surfaces open on the inside.
  • the lens (330) may be placed in the space of the barrel (310).
  • the barrel (310) may have a circular cross-sectional shape.
  • the barrel (310) may be made of a metal material.
  • the cross-sectional area of the arrangement region of the lens (330) formed in the first body (312) may be larger than the cross-sectional area of the arrangement region of the lens (330) formed in the second body (316).
  • a step that protrudes inwardly compared to other regions may be arranged in the space within the barrel (310) forming the inner surface of the first body (312).
  • the rear lens (390) may be arranged in the space within the first body (316), and the outermost lens (340) may be arranged in the space within the second body (316). At least a portion of the rear lens (390) may protrude upward from the barrel (310), and the other portion may be arranged in the space within the second body (316).
  • a through hole or through groove may be formed so as to penetrate from the inner surface to the outer surface of the second body (316) in a direction perpendicular to the optical axis direction, and through which a connecting portion (730) of a heating member (700) to be described later passes.
  • the lens module (300) may include a retainer (380).
  • the retainer (380) may be coupled to the outer surface of the barrel (310).
  • the retainer (380) may be screw-coupled to the barrel (310).
  • the retainer (380) and the barrel (310) may be coupled to each other through epoxy.
  • the retainer (380) may be coupled to the upper end of the barrel (310). At least a portion of the retainer (380) may be disposed within the first body (100). An incident surface of the outermost lens among the lenses (330) may protrude upward from the upper surface of the retainer (380).
  • the above-described combined structure of the barrel (310) and retainer (380) is exemplary, and the camera module (10) can be implemented as an integrated structure in which the barrel (310) and retainer (380) are one body.
  • the retainer (380) may have a ring-shaped cross-section.
  • the retainer (380) may be arranged so that at least a portion of the retainer (380) covers the edge of the outermost lens (340).
  • the retainer (380) may be arranged so as to surround the edge of the outermost lens (340).
  • the retainer (380) may be arranged so as to cover the edge of the incident surface of the outermost lens (340).
  • the retainer (380) may be in contact with a portion of the incident surface of the outermost lens (340).
  • a coupling groove (360) for coupling with the retainer (380) may be formed on the incident surface of the outermost lens (340). This will be described later.
  • the retainer (380) may include a first region (382) whose lower surface supports the incident surface of the outermost lens (340), and a second region (384) extending downward from the edge of the first region (382).
  • the second region (384) may be arranged between the barrel (310) and the first body (100).
  • the first region (382) and the second region (384) may be arranged perpendicular to each other.
  • a substrate joint portion may be formed on the lower surface of the lens holder (400) to which a first substrate (510) of a substrate module (500) to be described later is joined.
  • the substrate joint portion may have a groove shape that is concave upwards compared to other areas.
  • the above lens holder (400) may be omitted.
  • the substrate module (500) may be coupled to a space within the first body (100).
  • the above camera module (10) may include a substrate module (500).
  • the substrate module (500) may be placed in a space within the camera module (10).
  • the substrate module (500) may be placed between the first body (100) and the second body (200).
  • the above substrate module (500) may include a first substrate (510), a second substrate (520), and a connection substrate (not shown).
  • the first substrate (510) may be a printed circuit board (PCB).
  • An image sensor may be arranged on the upper surface of the first substrate (510).
  • the image sensor may be arranged on the first substrate (510) so as to face the lens (330) in the lens module (300) in the optical axis direction.
  • the first substrate (510) may be arranged within the substrate joint portion of the lens holder (400).
  • the second substrate (520) may be a printed circuit board (PCB).
  • the second substrate (520) may be positioned spaced apart from the first substrate (510) in the optical axis direction.
  • the second substrate (520) may be positioned below the first substrate (510).
  • a connector (not shown) may be coupled to the lower surface of the second substrate (520). The upper end of the connector may be soldered to the lower surface of the second substrate (520).
  • a terminal (525) may be arranged on the lower surface of the second substrate (520).
  • the terminal (525) may be electrically and physically connected to the lower end of a heating member (700) to be described later.
  • the second substrate (520) may be electrically connected to the first substrate (510).
  • the second substrate (520) and the first substrate (510) may be electrically connected through the connection substrate.
  • the connection substrate may be a flexible printed circuit board (FPCB).
  • the connection substrate may be connected at the upper and lower ends to the first substrate (510) and the second substrate (520), respectively, to electrically connect the first substrate (510) and the second substrate (520).
  • the camera module (10) may include a heat generating member (700).
  • the heat generating member (700) may provide heat to the surface of the lens (330).
  • the heat generating member (700) may provide heat to the surface of the outermost lens (340) among the plurality of lenses (330). Accordingly, frost formed on the surface of the outermost lens (340) may be removed.
  • the above-mentioned heating element (700) may be a PTC heater (positive temperature coefficient heater). One end of the heating element (700) may be connected to the surface of the outermost lens (340), and the other end may be connected to the substrate module (500).
  • the outermost lens (340) disposed on the barrel (310) may include an incident surface (342) onto which light is incident, an exit surface (344) opposite to the incident surface (342) from which the incident light is emitted toward the image sensor, and a connecting surface (346) connecting the incident surface (342) and the exit surface (344).
  • the connecting surface (346) may form a lower surface of the lens (330).
  • the connecting surface (346) may form a side surface of the lens (330).
  • One end of the heating member (700) may be coupled to the connecting surface (346).
  • the connecting surface (346) may be disposed outside an area forming an angle of view of the outermost lens (340).
  • the above-mentioned heat generating member (700) may be in the form of a film.
  • the above-mentioned heat generating member (700) may be a substrate having a circuit pattern formed thereon.
  • the above-mentioned heat generating member (700) may be a flexible printed circuit board (FPCB).
  • the above-described heat generating member (700) may include an upper portion (710), a lower portion (720), and a connecting portion (730).
  • the upper portion (710) is disposed at the upper end of the heat generating member (700) and may be coupled to the lens (330).
  • the upper portion (710) has a ring-shaped cross-section and may be coupled to the connecting surface (346).
  • the upper portion (710) may generate heat by providing power.
  • the upper portion (710) may have a circular shape corresponding to the shape of the lens (330) or the barrel (310). The coupling structure of the upper portion (710) and the lens (330) will be described later.
  • the lower part (720) is arranged at the lower end of the heat generating member (700) and can be coupled with the substrate module (500).
  • the lower part (720) can be coupled to the lower surface of the second substrate (520) of the substrate module (500).
  • the lower part (720) can be coupled to the terminal (525) arranged at the lower surface of the second substrate (520). Accordingly, power can be supplied to the heat generating member (700) from the substrate module (500), or a driving signal can be transmitted and received.
  • the above connecting portion (730) can connect the upper portion (710) and the lower portion (720).
  • the connecting portion (730) can include a region that is bent at least once. At least a portion of the connecting portion (730) can be positioned between the outer surface of the barrel (310) and the inner surface of the first body (100). A hole (not shown) can be formed in the barrel (310) so that the connecting portion (730) can pass through it.
  • the width (W3-2) of the electrode of the connecting portion (730) may be greater than the width (W3-1) of the electrode of the upper portion (710). Accordingly, the loss of power provided from the substrate module (500) can be minimized.
  • the upper portion (710) may include a plurality of electrodes spaced apart in the radial direction.
  • the connecting portion (730) may include a plurality of electrodes that are respectively connected to the plurality of electrodes.
  • the spacing (W2-1) between the plurality of electrodes in the upper portion (710) may be greater than the spacing (W2-2) between the plurality of electrodes in the connecting portion (730). Accordingly, in the connecting portion (730), power loss can be minimized with electrodes of relatively large width, and in the upper portion (710), the spacing (W2-1) between the plurality of electrodes can be maximized to improve the thermal efficiency of the heating region.
  • a region where the width of the electrode decreases there may be a region where the width of the electrode decreases. Since cracks may occur due to a sudden change in the amount of current when the width of the electrode (W3-2) at the connecting portion (730) decreases rapidly to the width of the electrode (W3-1) at the upper portion (710), in the present embodiment, as illustrated in FIG. 3, a region where the width gradually decreases between the connecting portion (730) and the upper portion (710) may be formed to prevent cracks.
  • the first separation distance (d1) may be smaller than the second separation distance (d2).
  • the radial width (W1) between the electrodes arranged radially outer among the plurality of electrodes within the upper portion (710) and the outer circumferential surface of the upper portion (710) may be smaller than the second separation distance (d2).
  • the radial spacing (W2-1) between the plurality of electrodes within the upper portion (710) may be larger than the first separation distance (d1).
  • the heating member (700) may include a first substrate (712), a second substrate (714), a heating layer (716), and an adhesive layer (719).
  • the first substrate (712) and the second substrate (714) are each formed in a film shape, and a space can be formed therebetween in which the heating layer (716) is formed.
  • the first substrate (712) can be positioned relatively closer to the surface of the lens (330) than the second substrate (714). Accordingly, the first substrate (712) can be referred to as an upper substrate, and the second substrate (714) can be referred to as a lower substrate.
  • the thickness (t2) of the first substrate (712) may be smaller than the thickness (t1) of the second substrate (714).
  • the thickness (t2) of the first substrate (712) may be 1/4 or less of the thickness (t1) of the second substrate (714).
  • the thickness (t1) of the first substrate (712) may be 20 um to 30 um.
  • the thickness (t2) of the second substrate (714) may be 80 um to 120 um.
  • the thermal conductivity of the first substrate (712) may be greater than the thermal conductivity of the second substrate (714). Accordingly, heat may be concentrated on the lens (330) through the first substrate (712).
  • the first substrate (712) can be removed. That is, when the heat generated from the heating layer (716) is transferred to the surface of the lens (330), the heat loss caused by the first substrate (712) can be eliminated and the heat can be transferred efficiently.
  • the heating layer (716) can be placed between the adhesive layer (719) and the second substrate (714).
  • the electrode (718) may be disposed on the surface of the polymer.
  • the electrode (718) may include a plurality of electrodes having different polarities.
  • the heating layer (716) may generate heat due to a change in resistance of the conductive particles (717) when power is supplied from the substrate module (500).
  • One surface of the first substrate (712) may be in direct contact with the plurality of electrodes (718).
  • the plurality of electrodes (718) can come into direct contact with the second substrate (714).
  • the adhesive layer (719) may be disposed on the first substrate (712).
  • the adhesive layer (719) may be formed on the other surface of the first substrate (712) opposite to the surface that comes into contact with the electrode (718).
  • an adhesive may be additionally disposed on the surface of the adhesive layer (719).
  • the thermal conductivity of the adhesive layer (719) may be greater than the thermal conductivity of the second substrate (714).
  • the thermal conductivity of the adhesive layer (719) may be greater than the thermal conductivity of the first substrate (712). Accordingly, heat may be concentrated on the lens (330) through the adhesive layer (719).
  • a release film (not shown) may be placed on the adhesive layer (719), and the strength of the heating member (700) may be reinforced through the release film.
  • a groove (350) may be formed on the lower surface of the outermost lens (340).
  • the groove (350) may be formed on the connecting surface (346) of the outermost lens (340).
  • the groove (350) may have a concave shape that is concave upward more than other areas from the connecting surface (346) of the outermost lens (340).
  • the connecting surface (346) may include a first surface (346a) disposed on the inner side of the groove (350) and a second surface (346b) disposed on the outer side of the groove (350).
  • the first surface (346a) and the second surface (346b) may be disposed to be spaced apart from each other in a direction perpendicular to the optical axis direction.
  • the first surface (346a) and the second surface (346b) can form the same plane.
  • the length (L3) of the groove (350) may be greater than the sum of the length (L1) of the first surface (346a) and the length (L2) of the second surface (346b).
  • the cross-sectional shape of the above home (350) can be formed to correspond to the cross-sectional shape of the upper portion (710).
  • the upper portion (710) may be coupled to the groove (350).
  • the upper portion (710) may be accommodated within the groove (350).
  • the upper portion (710) may be embedded within the groove (350).
  • the upper surface of the upper portion (710) may contact the bottom surface of the groove (350), and the side surface of the upper portion (710) may contact the inner surface of the groove (350). Accordingly, heat generated from the upper portion (710) may be more easily conducted to the center of the outermost lens (340), thereby improving heat generation efficiency.
  • the length (L1) of the first surface (346a) may be shorter than the length (L2) of the second surface (346b). Accordingly, heat generated at the upper portion (710) may be more easily transferred toward the center rather than the outside of the lens (340).
  • the bonding strength between the heat generating member (700) and the lens (300) can be improved by the bonding structure of the heat generating member (700) and the lens (300) through the groove (350), and since the heat generated from the heat generating member (700) is easily transferred to the entire area of the lens (300), there is an advantage in that the lens (300) can be heated more uniformly.
  • FIG. 7 is a drawing illustrating a second modified example of a lens and heat-generating member combination structure according to an embodiment of the present invention.
  • the upper portion (710) of the above heating member (700) can be coupled to the groove (2350).
  • the upper surface of the upper portion (710) can be in contact with the bottom surface (2352) of the groove (2350), and the side surface of the upper portion (710) can be in contact with the inner surface of the groove (2350).
  • the upper surface of the upper portion (710) in contact with the bottom surface (2352) of the above-mentioned home (2350) may be curved to correspond to the curved shape of the bottom surface (2352).
  • the upper surface of the upper portion (710) may be a convex surface with a central portion protruding upward.
  • the thermal conductivity can be improved by increasing the contact area between the groove (2350) and the upper portion (710).
  • the heat of the upper portion (710) can be more easily transferred to the central region of the outermost lens (2340).

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  • General Physics & Mathematics (AREA)
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  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
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  • Studio Devices (AREA)

Abstract

Le présent module de caméra comprend : un premier corps ; un module de lentille qui est disposé dans le premier corps et qui comprend un cylindre ainsi qu'une lentille disposée dans le cylindre ; un module de substrat disposé dans le premier corps ; et un élément chauffant dont une extrémité est reliée à la surface de la lentille et dont l'autre extrémité est reliée au module de substrat de façon à fournir de la chaleur à la lentille. La lentille comprend une surface incidente sur laquelle la lumière est incidente, une surface d'émission qui fait face à la surface incidente et qui émet de la lumière, et une surface de liaison qui relie la surface incidente et la surface d'émission ; une rainure évidée est disposée vers le haut sur la surface de liaison ; et une extrémité de l'élément chauffant est disposée dans la rainure.
PCT/KR2025/002354 2024-02-19 2025-02-18 Module de caméra Pending WO2025178350A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020240023831A KR20250127664A (ko) 2024-02-19 2024-02-19 카메라 모듈
KR10-2024-0023831 2024-02-19

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WO2025178350A1 true WO2025178350A1 (fr) 2025-08-28

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KR (1) KR20250127664A (fr)
WO (1) WO2025178350A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110244502A (zh) * 2018-03-08 2019-09-17 光宝电子(广州)有限公司 加热装置及应用该加热装置的摄像器
KR20200076414A (ko) * 2018-12-19 2020-06-29 주식회사 세코닉스 빙결 및 결로 방지용 카메라 모듈
CN113126395A (zh) * 2021-04-08 2021-07-16 深圳市豪恩汽车电子装备股份有限公司 一种除雾镜头
US20230161232A1 (en) * 2020-07-07 2023-05-25 Ningbo Sunny Automotive Optech Co., Ltd Heating apparatus for lens, and lens assembly and method for manufacturing same
KR102549036B1 (ko) * 2018-08-02 2023-06-29 엘지이노텍 주식회사 카메라 모듈

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101963264B1 (ko) 2013-10-08 2019-03-28 삼성전기주식회사 차량용 카메라 모듈

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110244502A (zh) * 2018-03-08 2019-09-17 光宝电子(广州)有限公司 加热装置及应用该加热装置的摄像器
KR102549036B1 (ko) * 2018-08-02 2023-06-29 엘지이노텍 주식회사 카메라 모듈
KR20200076414A (ko) * 2018-12-19 2020-06-29 주식회사 세코닉스 빙결 및 결로 방지용 카메라 모듈
US20230161232A1 (en) * 2020-07-07 2023-05-25 Ningbo Sunny Automotive Optech Co., Ltd Heating apparatus for lens, and lens assembly and method for manufacturing same
CN113126395A (zh) * 2021-04-08 2021-07-16 深圳市豪恩汽车电子装备股份有限公司 一种除雾镜头

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