WO2020113396A1 - 光学镜头及其制作方法、指纹识别模组、移动终端 - Google Patents
光学镜头及其制作方法、指纹识别模组、移动终端 Download PDFInfo
- Publication number
- WO2020113396A1 WO2020113396A1 PCT/CN2018/119036 CN2018119036W WO2020113396A1 WO 2020113396 A1 WO2020113396 A1 WO 2020113396A1 CN 2018119036 W CN2018119036 W CN 2018119036W WO 2020113396 A1 WO2020113396 A1 WO 2020113396A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- lens
- optical lens
- fingerprint
- screen
- 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.)
- Ceased
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
- G06F9/452—Remote windowing, e.g. X-Window System, desktop virtualisation
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/18—File system types
- G06F16/182—Distributed file systems
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/547—Remote procedure calls [RPC]; Web services
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/147—Details of sensors, e.g. sensor lenses
Definitions
- the invention relates to the technical field of fingerprint identification, in particular to an optical lens, a manufacturing method thereof, a fingerprint identification module, and a mobile terminal.
- Fingerprint recognition and unlocking has become a feature equipped with most mobile terminals such as mobile phones and tablet computers.
- fingerprint recognition technology mainly includes capacitive, optical and ultrasonic.
- the capacitive fingerprint sensor is one of the more widely used at present. It collects the fingerprint information of the user's hand through the capacitive sensor placed under the panel.
- capacitive sensors With the advent of the era of full-screen mobile phones, capacitive sensors have been gradually abandoned because they are difficult to place under the screen. Ultrasonic technology is still in the initial development stage, and its technical cost cannot be reduced. Therefore, in the application of fingerprints under the screen, optical sensors are used. Under-screen fingerprints are the most popular.
- OLED organic light-emitting diode
- the thickness of the screen is thin, and the overall screen structure is a light-transmitting material
- the existing fingerprint recognition devices under the optical screen are all applied to OLED screens. Specifically, the light emitted from the OLED screen is irradiated through the pixel gap to the fingerprint of the user covered on the unlock area of the screen fingerprint, and the light reflected from the fingerprint is formed by the optical element to form a fingerprint image, and the fingerprint image is transmitted to the optical sensor below the screen , Collect and recognize fingerprint images through optical sensors.
- the invention provides an optical lens, a fingerprint identification module, a mobile terminal and an optical lens manufacturing method, so as to realize the application of an off-screen optical fingerprint on an LCD screen.
- the present invention provides an optical lens for use in a fingerprint recognition module located on the side of the screen, and the optical lens is located on the optical path of the fingerprint image reflected by the reflector.
- the member has at least one light-transmitting hole for imaging.
- the optical lens further includes at least one lens for condensing light, the lens is disposed on the shading member and is arranged in one-to-one correspondence with the light transmission hole, and the optical axis of the lens passes through the corresponding light transmission hole.
- the lens is a convex lens.
- the lens is located on the light entrance side of the light transmission hole or the light exit side of the light transmission hole.
- the light entrance side of the lens is spherical and the light exit side is flat; or,
- the light entrance side of the lens is flat, and the light exit side is spherical.
- the light-shielding member includes a light-transmissive base material layer and a light-shielding layer for light shielding, the light-shielding layer covering one side surface of the base material layer; the light-transmitting holes are provided on the light-shielding layer.
- At least one surface of the base material layer is provided with a filter layer, and the filter layer is used to filter light of a preset wavelength.
- the thickness of the substrate layer is between 100-500 microns.
- the diameter of the light transmitting hole is between 100-500 microns.
- the thickness of the lens is between 10-30 microns.
- the number of light transmitting holes is at least two;
- At least two light-transmitting holes are stacked in the light incident direction; and/or at least two light-transmitting holes are arranged side by side in the light incident direction.
- the present invention provides a fingerprint recognition module, which is arranged on the side of the screen.
- the fingerprint recognition module includes a fingerprint recognition chip, a reflector, and the optical lens as described above.
- the reflector is used to apply the screen
- the fingerprint image reflected on the surface is reflected to the optical lens, and then illuminates the sensing surface of the fingerprint recognition chip after passing through the optical lens.
- the fingerprint recognition module further includes a light source, which is arranged on the side of the screen and used to make the surface of the screen reflect the fingerprint image.
- the present invention provides a mobile terminal, including the fingerprint identification module as described above.
- the present invention provides an optical lens manufacturing method, including:
- a light-shielding layer is provided on the light-transmissive substrate layer to form a light-shielding member
- a light-transmitting hole for imaging is formed on the light blocking member.
- the method further includes: providing a lens for condensing light on the light-shielding member, and the optical axis of the lens passes through the light-transmitting hole.
- a light-shielding layer is provided on the light-transmissive substrate layer to form a light-shielding member, which specifically includes:
- a light-shielding layer is coated on one surface of the base material layer to form a light-shielding member.
- forming a light-transmitting hole for imaging on the shading member specifically includes:
- a through hole is opened on the light shielding layer, and the through hole is formed into a light transmitting hole.
- the method further includes: providing a filter layer on at least one surface of the substrate layer, the filter layer being used to filter light of a preset wavelength.
- the optical lens, the fingerprint recognition module, the mobile terminal and the manufacturing method of the optical lens of the present invention is used to be installed in the fingerprint recognition module located on the side of the screen, and the optical lens is located on the optical path of the fingerprint image reflected by the reflector,
- the optical lens includes a light-shielding member, and the light-shielding member has at least one light-transmitting hole for imaging.
- the optical lens installed in the fingerprint recognition module on the side of the screen receives the fingerprint image of the fingerprint above the screen reflected by the reflector.
- the light blocking member in the optical lens can prevent the optical path of the fingerprint image from passing, so that the light of the fingerprint image can pass through Passing through the light hole, a clear inverted fingerprint image is formed through the light transmission hole, so that the fingerprint recognition chip in the fingerprint recognition module collects and recognizes the fingerprint image.
- the LCD screen which cannot self-illuminate, has a large thickness, and is opaque, can have the function of fingerprint recognition under the optical screen.
- Embodiment 1 is a schematic structural diagram of an optical lens provided by Embodiment 1 of the present invention.
- Embodiment 1 of the present invention is a top view of an optical lens provided by Embodiment 1 of the present invention.
- FIG. 3 is a schematic structural diagram of a fingerprint identification module according to Embodiment 1 of the present invention.
- FIG. 4 is another schematic structural diagram of a fingerprint identification module according to Embodiment 1 of the present invention.
- Example 5 is a schematic structural diagram of a substrate layer provided in Example 1 of the present invention.
- FIG. 6 is a schematic structural diagram of a second optical lens according to Embodiment 1 of the present invention.
- FIG. 7 is a schematic structural diagram of a third optical lens according to Embodiment 1 of the present invention.
- FIG. 8 is a schematic structural diagram of a fourth optical lens according to Embodiment 1 of the present invention.
- FIG. 9 is a flowchart of a method for manufacturing an optical lens according to Embodiment 4 of the present invention.
- the OLED screen has self-illumination, the screen thickness is small, and the overall screen structure is a light-transmitting material, and the fingerprint recognition device can be arranged below the OLED screen.
- the fingerprint recognition device includes optical elements and optical sensors. The self-illumination of the OLED screen can illuminate the fingerprint located above the screen through the OLED pixel gap. The light reflected from the fingerprint passes through the optical element located below the OLED screen to form a fingerprint image, and then the fingerprint image Conducted to the optical sensor below the screen, the optical sensor is used to collect and recognize the fingerprint image.
- the traditional LCD screen cannot be self-luminous and requires an external light source, and because the structure of the LCD screen is too thick, the screen is thick, and a reflector is required on the back to reverse the light of the external light source to the screen, so the screen cannot be transparent, and the fingerprint It is difficult to install the identification module under the LCD screen.
- This series of features makes the fingerprint technology under the optical screen unable to be applied on the LCD screen.
- OLED screens have higher cost and lower production capacity, which also leads to the fact that fingerprint technology under the optical screen matching OLED screens cannot be widely applied.
- FIG. 1 is a schematic structural diagram of an optical lens according to Embodiment 1 of the present invention. As shown in FIG. 1, the optical lens 1 is used in the fingerprint recognition module 4 located on the side of the screen 5, and the optical lens 1 is located on the optical path of the fingerprint image reflected by the light emitter.
- the member 11 has at least one light transmission hole 111 for imaging.
- the optical lens 1 of this embodiment is a part of the fingerprint recognition module 4, and the fingerprint recognition module 4 is disposed on the side of the screen 5, so as to overcome the fact that the fingerprint recognition module 4 should be disposed below the screen 5. It is difficult to set the fingerprint identification module 4 under the LCD screen 5.
- the reflector 2 in the fingerprint recognition module 4 on the side of the screen 5 reflects the fingerprint image reflected by the fingerprint above the screen 5, and the optical lens 1 is disposed on the optical path of the fingerprint image reflected by the reflector 2 through the optical lens 1
- the reflected fingerprint image is formed into a reduced, clear inverted image of the fingerprint image, after which the fingerprint image is irradiated onto the sensing surface of the fingerprint recognition chip 3, and the fingerprint image is collected and recognized by the fingerprint recognition chip 3.
- the optical lens 1 forms a reduced and clear fingerprint image of the fingerprint image through the light blocking member 11, and the light blocking member 11 is provided with a light transmitting hole 111 for imaging.
- the rest of the shading member 11 will prevent the light from passing through, and the light will pass through the light-transmitting hole 111.
- the light passing through the light-transmitting hole 111 forms a narrowing on the light-emitting side of the optical lens 1 1.
- the inverted image of a clear fingerprint image is used to form a reduced and clear fingerprint image, which is convenient for the fingerprint identification chip 3 to collect and identify.
- each light-transmitting hole 111 can form a fingerprint image. After multiple fingerprint images are irradiated to the fingerprint recognition chip 3, the clarity of each area of the fingerprint image is enhanced, which can make the fingerprint
- the identification chip 3 is easier to collect and identify.
- the optical lens 1 of this embodiment further includes at least one lens 12 for condensing light, the lens 12 is disposed on the light blocking member 11 and is in contact with the light transmitting hole 111 One is provided correspondingly, and the optical axis of the lens 12 passes through the corresponding light transmitting hole 111.
- the optical path of the fingerprint image reflected from the screen 5 is reflected by the reflector 2 to the optical lens 1, and a reduced and clear fingerprint image is formed through the light transmission hole 111 of the optical lens 1, and a lens 12 is also provided on the light transmission hole 111.
- the lens 12 can further converge the optical path of the formed fingerprint image to form a smaller, clearer fingerprint image, which can enable the fingerprint identification chip 3 to collect and identify fingerprint images more quickly and sensitively, and further improve fingerprint identification The working efficiency and accuracy of the module 4.
- FIG. 2 is a top view of the optical lens provided by Embodiment 1 of the present invention.
- the optical axis of the lens 12 passes through the corresponding light-transmitting hole 111, that is, the center line of the lens 12 passes through the light-transmitting hole 111, so that the fingerprint image reflected by the reflector 2 to the optical lens 1 will definitely Passing through the light-transmitting hole 111 and the lens 12 successively, no matter whether it first passes through the light-transmitting hole 111 and then passes through the lens 12, or passes through the lens 12 and then through the light-transmitting hole 111, the fingerprint image can be reduced after passing through the optical lens 1, Clear fingerprint image, so that the fingerprint image can be clearly and completely irradiated on the fingerprint recognition chip 3, that is, the size of the fingerprint image after being reduced by the light transmission hole 111 and the lens 12 can meet the requirements of the fingerprint recognition chip 3 ,
- the fingerprint images can all be located in the sensing area of the fingerprint recognition chip 3, so that the fingerprint recognition chip 3 can collect
- the lens 12 may be a convex lens.
- the convex lens is a common lens 12 with a thick middle and thin edges.
- the convex lens may be a spherical surface as shown in FIG. 1 and a flat surface on the other surface.
- the part where the shading member 11 and the lens 12 are in contact is also a flat surface, which can make the lens 12 and the shading member 11 easier to be assembled into one body; of course, the convex lens of this embodiment can also be made into a spherical surface on both sides, according to the convex lens and the shading
- the specific surface shape of the body-contacting side determines the surface shape of the light-shielding body, so that the light-shielding body and the convex lens can be matched.
- the surface shape of the convex lens when selecting the surface shape of the convex lens, it mainly depends on the optical path formed between the fingerprint area of the screen 5, the reflector 2, the optical lens 1, and the fingerprint recognition chip 3, so that the fingerprint image reflected by the reflector 2 can pass through
- the light transmission hole 111 and the convex lens of the optical lens 1 are irradiated onto the fingerprint recognition chip 3, and the convex lens can focus light to make the fingerprint image clearer, and the specific surface shape of the convex lens is not limited.
- the light transmission hole 111 of the optical lens 1 plays an imaging role, and the lens 12 is to converge the optical path of the fingerprint image to make the formed fingerprint image clearer.
- the light transmission hole 111 can be used to image the optical path of the fingerprint image first. Then, the fingerprint image is further cleared through the lens 12, of course, the optical path of the fingerprint image reflected by the reflector 2 may be first condensed through the lens 12 to make it clearer, and then formed through the light-transmitting hole 111 to be reduced and clear Fingerprint image. Therefore, the lens 12 of this embodiment may be located on the light entrance side of the light transmission hole 111 or the light exit side of the light transmission hole 111.
- FIG. 3 is a schematic structural diagram of a fingerprint identification module according to Embodiment 1 of the present invention.
- the optical path of the fingerprint image reflected from the reflector 2 to the optical lens 1 first passes through the lens 12, and the lens 12 converges the optical path to form a clear fingerprint image, and then forms a reduced and clearer image through the light transmission hole 111 Fingerprint image, and then illuminate the fingerprint image to the fingerprint recognition chip 3.
- FIG. 4 is another schematic structural diagram of the fingerprint identification module according to Embodiment 1 of the present invention. As shown in FIG.
- the optical path of the fingerprint image reflected from the reflector 2 to the optical lens 1 first passes through the light-transmitting hole 111 to form a reduced, clear inverted image of the fingerprint image, and then passes through the lens 12
- the inverted image of the formed fingerprint image is further reduced and clear, and the fingerprint image formed after passing through the lens 12 is irradiated to the fingerprint recognition chip 3 again.
- the contact surface between the light shielding body and the lens 12 may be a flat surface, and the lens 12 and the light shielding body are relied upon by the plane of the lens 12 Assemble as one.
- the light incident side of the lens 12 may be spherical and the light exit side may be flat; or, the light incident side of the lens 12 may be flat and the light exit side may be spherical. As shown in FIG.
- the lens 12 is located on the light incident side of the light transmission hole 111, that is, the optical path of the fingerprint image first passes through the lens 12 and then through the light transmission hole 111, and the plane of the lens 12 and the light transmission hole 111 are bonded together. If the spherical surface faces away from the shading body, the optical path of the fingerprint image first passes through the spherical surface of the lens 12 and then passes through its plane, that is, the light entrance side of the lens 12 is a spherical surface and the light exit side is a plane; as shown in FIG.
- the light exit side that is, the optical path of the fingerprint image first passes through the light-transmitting hole 111 and then passes through the lens 12, then, when passing the lens 12, it first passes through the plane of the lens 12 that is attached to the light-transmitting hole 111, and then passes through the spherical surface of the lens 12, that is, the lens
- the light incident side of 12 is a flat surface, and the light exit side is a spherical surface.
- the light blocking member 11 of this embodiment prevents the light path of the fingerprint image reflected by the reflector 2 from passing through the remaining parts of the light blocking member 11, and the rest of the parts prevent light from passing, so that the light path can pass through the light transmitting hole 111 to form a narrow and clear Fingerprint image.
- the light shielding member 11 of this embodiment may include a light-transmitting base material layer 112 and a light-shielding layer 113 for light shielding.
- the light-shielding layer 113 covers one side surface of the base material layer 112.
- the base material layer 112 is the main supporting structure of the optical lens 1.
- the base material layer 112 is light-transmissive, which can be any transparent material with a certain strength, such as crystal, glass, organic materials, etc.
- the base material layer 112 does not prevent light from passing through.
- the base layer 112 is also provided with a light shielding layer 113 to prevent light from passing through.
- the light transmitting hole 111 is provided on the light shielding layer 113.
- the optical path of the fingerprint image needs to pass through the light-transmitting hole 111 to illuminate the fingerprint recognition chip 3. If the light transmission hole 111 is provided on the base material layer 112, when the optical path passes through the optical lens 1, as shown in FIGS. 3 and 4, no matter whether the optical path passes through the lens 12 or the small hole first, due to the provision of the light shielding layer 113 The light path is blocked on the surface of the light-shielding layer 113 on the light incident side.
- the light-transmitting hole 111 is provided on the light-shielding layer 113, and the light path is blocked by other parts of the light-shielding layer 113 when passing through the light-shielding layer 113, so that all the reflected light passes through the light-transmitting hole 111.
- the light-transmitting hole 111 can also penetrate the light-shielding layer 113 and the base material layer 112. Since the base material layer 112 can transmit light, the light-transmitting hole 111 can pass through the base material layer 112 or not, and the light path can also pass through The hole 111 is irradiated to the fingerprint recognition chip 3. In order to ensure that the base material layer 112 has sufficient strength to support the entire optical lens 1, only the light transmitting hole 111 may be provided on the light shielding layer 113.
- the fingerprint recognition chip 3 may be fingerprint information collected and recognized by light of some specific wavelength bands such as natural white light or infrared light. Then, the light irradiated to the fingerprint image of the fingerprint recognition chip 3 through the optical lens 1 should match the fingerprint
- the identification chip 3 can collect and identify the light of the wavelength band.
- the light blocking body may include only the base material layer 112 and the light blocking layer 113, and the light passing through the light blocking body may be natural white light.
- FIG. 5 is a schematic structural diagram of a substrate layer provided in Embodiment 1 of the present invention.
- the base material layer 112 of this embodiment may be provided with a filter layer 114, and the filter layer 114 is used to filter light of a preset wavelength.
- the filter layer 114 provided on the surface of the base material layer 112 has a function of filtering light. Through the filter layer 114, light that cannot be collected and recognized by the fingerprint chip cannot pass through the optical lens 1, and only matches the fingerprint recognition chip 3. The light of a specific wavelength band passes through the optical lens 1.
- the filter layer 114 may be provided on only one side surface of the base material layer 112, or both sides of the base material layer 112 are provided with the filter layer 114, depending on the specific wavelength band of desired light. For example, if it is necessary to allow light in the wavelength band above 500 nanometers to pass through the optical lens 1, only a light shielding layer 113 for filtering light in the wavelength band below 500 nanometers needs to be provided on the surface of the side of the base material layer 112; With the optical lens 1, it is only necessary to provide a light shielding layer 113 on the surface of the base material layer 112 to filter out light in the wavelength band above 700 nanometers; and if it is necessary to allow light in the wavelength band between 500 nanometers and below 700 nanometers to pass through the optical lens 1, then It is necessary to provide a light shielding layer 113 on one side surface of the base material layer 112 to filter light in the wavelength band below 500 nm, and a light shielding layer 113 on the other side surface of the base material layer 112 to filter out light in
- the optical lens 1 provided in this embodiment is mainly used in mobile terminals such as mobile phones and tablet computers.
- the size of these mobile terminals is relatively small, and the optical lens 1 is disposed on the side of the screen 5, so the size of the optical lens 1 is relatively
- the mobile terminal is smaller so that it can match the mobile terminal.
- the thickness of the base material layer 112 may be between 100-500 microns.
- the base material layer 112 serves as the main body support member of the optical lens 1, and its thickness determines whether the optical lens 1 can be placed in the space on the side of the screen 5 Inside, the thickness of the base material layer 112 of this embodiment is in the order of 100 micrometers, and the size is tiny, which meets the requirements.
- the thickness of the substrate layer 112 may be 200 ⁇ m, 300 ⁇ m, 400 ⁇ m, etc., which is not limited in this embodiment.
- the diameter of the light transmitting hole 111 may be between 100-500 microns.
- the smaller diameter of the light transmission hole 111 matches the overall size of the optical lens 1; on the other hand, the diameter of the light transmission hole 111 is smaller, and the fingerprint image formed by the light transmission hole 111 is smaller and clearer.
- the diameter of the light-transmitting hole 111 may be 200 microns, 300 microns, 400 microns, etc., which is not limited in this embodiment.
- the thickness of the lens 12 may be between 10-30 microns.
- the lens 12 and the light transmission hole 111 are provided correspondingly.
- the function of the lens 12 is to converge the optical path of the fingerprint image reflected by the reflector 2, so that the fingerprint image formed after passing through the lens 12 is further reduced and clearer.
- the lens 12 needs to be set at The optical path of the fingerprint image reflected by the reflector 2 and the optical path of the fingerprint image after being condensed by the lens 12 should be able to illuminate the fingerprint identification chip 3, therefore, the size, position, and surface shape of the lens 12 must all depend on the optical path of the fingerprint image Design needs.
- the thickness of the lens 12 can be set between 10-30 microns according to the external dimensions of the mobile terminal and the accommodating space on the side of the screen 5, specifically, the thickness of the lens 12 can be 15 microns, 20 microns, 25 microns, etc., this embodiment is not limited.
- the number of the light-transmitting holes 111 may be at least two; wherein, at least two light-transmitting holes 111 are in the light Are stacked in the direction of incidence; and/or at least two light-transmitting holes 111 are arranged side by side in the direction of light incidence.
- the figure shows that three light-transmitting holes 111 are stacked in the light incident direction, and the three light-transmitting holes 111 may be provided on the three light-shielding members 11 stacked, each The lenses 12 are correspondingly arranged on the light transmission holes 111.
- the fingerprint image In the light incident direction, after the optical path of the fingerprint image passes through the first light-transmitting hole 111 and the lens 12, the fingerprint image is reduced and cleared, and then passes through the second light-transmitting hole 111 and the lens 12, the fingerprint image is further reduced and more Clear, and then through the third light transmission hole 111 and the lens 12, the fingerprint image is further reduced and clear, so that after the fingerprint image is reduced and cleared in multiple stages, the fingerprint image finally irradiated to the fingerprint recognition chip 3 has a good Clarity.
- two light transmission holes 111, four light transmission holes 111, five light transmission holes 111, etc. may also be stacked, and the illustration is only one of many possible embodiments.
- the four light-transmitting holes 111 are arranged side by side in the light incident direction.
- the four light-transmitting holes 111 may be arranged on a light shielding member 11 at intervals, and each light-transmitting hole 111 is provided ⁇ 12 ⁇ There are lenses 12.
- the optical path of the fingerprint image reflected by the reflector 2 can enter the four light-transmitting holes 111 and the lens 12 at the same time.
- Each group of light-transmitting holes 111 and the lens 12 can make part of the fingerprint image clearer.
- the light hole 111 and the lens 12 can make the left part of the upper half of the fingerprint image clearer, while the other group of light transmitting holes 111 and the lens 12 can make the left part of the lower half of the fingerprint image clearer, and the third group transmits light
- the hole 111 and the lens 12 can make the right part of the upper half of the fingerprint image clearer, and the fourth set of light-transmitting holes 111 and the lens 12 can make the right part of the lower half of the fingerprint image clearer.
- the fingerprint image irradiated to the fingerprint recognition chip 3 can be a fingerprint image with good overall definition formed by integrating the clear parts of the four sets of light transmission holes 111 and the lens 12.
- two light transmission holes 111, three light transmission holes 111, five light transmission holes 111, etc. may also be arranged side by side, and the figure shows only one of many possible implementation manners.
- each layer of light-transmitting holes 111 includes four light-transmitting holes 111, and each light-transmitting hole 111 is correspondingly provided with a lens 12.
- the light transmission holes 111 and the lens 12 stacked in the light incident direction can make the formed fingerprint image clearer, and the light transmission holes 111 and the lens 12 arranged side by side can make each part of the fingerprint image clearer. Combining these two schemes into one body can significantly improve the overall clarity of the fingerprint image finally formed by the optical lens 1 and will not be described in detail.
- the multilayer light-shielding members 11 need to be arranged at intervals, and the light-transmitting holes 111 and the lens 12 are provided on the light-shielding members 11, the multilayer light-shielding members 11 can be connected through the light-shielding plate 13 In order to avoid the light path passing through the light-transmitting hole 111 of the first layer of shading member 11 and the lens 12 cannot reach the light-transmitting hole 111 and lens 12 of the rear shading member 11; In the case of a light transmission hole 111 and a lens 12, a light shielding plate 13 may be provided between the adjacent light transmission holes 111 and the lens 12, so that the optical path can be straight from the light transmission hole 111 of the previous layer light shield 11 and the lens 12 Passes through the light transmission hole 111 and the lens 12 of the light blocking member 11 of the next layer.
- an optical lens 1 with only one light transmission hole 111 and lens 12 can be provided on the side of the screen 5 to form a reduced, clear fingerprint Images; and in some mobile terminals with large external dimensions, such as tablet computers, an optical lens 1 with a plurality of stacked holes and/or side-by-side light transmission holes 111 and lenses 12 may be provided on the side of the screen 5 to form
- the resolution of the fingerprint image is better, this embodiment is not specifically limited.
- the lens 12 may not be provided above the plurality of light-transmitting holes 111 stacked and/or arranged side by side, depending on the sharpness of the formed fingerprint image, and the sharpness of the formed fingerprint image may be sufficient for fingerprint recognition
- the chip 3 senses to determine whether to provide the lens 12 above the light transmission hole 111.
- Embodiment 2 of the present invention provides a fingerprint recognition module 4 which is arranged on the side of the screen 5.
- the fingerprint recognition module 4 includes a fingerprint recognition chip 3, a reflector 2 and the optics described in the first embodiment
- the lens 1 and the reflector 2 are used to reflect the fingerprint image reflected on the surface of the screen 5 to the optical lens 1 and irradiate the sensing surface of the fingerprint recognition chip 3 after passing through the optical lens 1.
- the fingerprint identification module 4 of this embodiment can be applied to a conventional LCD screen 5. As shown in FIG. 3 or FIG. 4, the fingerprint recognition module 4 is located on the side of the screen 5.
- the fingerprint recognition module 4 includes a reflector 2, an optical lens 1 and a fingerprint recognition chip 3.
- the reflector 2 is used to apply fingerprints on the surface of the screen 5
- the reflected light is reflected to the optical lens 1.
- the optical lens 1 is used to form a reduced and clear fingerprint image of the light reflected by the reflector 2 and then irradiate the fingerprint image onto the sensing surface of the fingerprint recognition chip 3 through the fingerprint.
- the identification chip 3 collects and recognizes fingerprint images.
- the fingerprint recognition chip 3 collects and recognizes the received fingerprint image.
- the fingerprint recognition module 4 may further include a light source 6, which is disposed on the side of the screen 5 and used to reflect the fingerprint image on the surface of the screen 5. As shown in FIG. 3 or FIG. 4, the light source 6 is used to emit light and irradiate the fingerprint area located above the screen 5 so that the fingerprint image formed on the screen 5 is reflected to the reflector 2 by the finger. In this embodiment, a complete optical path needs to be formed between the light source 6, the finger above the screen 5, the reflector 2, the optical lens 1, and the fingerprint identification chip 3. Therefore, the number of fingerprint identification modules 4 can be determined according to the designed optical path The location and size of components.
- the external light source 6 for the LCD screen 5 is located in the area of the fingerprint recognition module 4, and the external light source 6 can form a complete optical path with other components of the fingerprint recognition module 4, which can ultimately enable the fingerprint recognition chip 3
- the light source 6 may not be provided separately, but the external light source 6 of the LCD screen 5 itself is used as the light source 6 of the fingerprint recognition module 4.
- Embodiment 3 of the present invention provides a mobile terminal, which may be a mobile phone, a tablet computer, etc.
- the mobile terminal of this embodiment includes the fingerprint identification module 4 described in Embodiment 2.
- the fingerprint recognition module 4 is located on the side of the screen 5.
- the fingerprint recognition module 4 includes a fingerprint recognition chip 3, a reflector 2 and the optical lens 1 described in the first embodiment.
- the fingerprint recognition module 4 is located on the side of the screen 5 of the mobile terminal.
- the fingerprint recognition module 4 may include a light source 6, a reflector 2, an optical lens 1, and a fingerprint recognition chip 3.
- the light source 6 is used for The light is emitted and irradiated to the fingerprint area above the screen 5, the reflector 2 is used to reflect the light reflected by the fingerprint on the surface of the screen 5 to the optical lens 1, and the optical lens 1 is used to reduce the light reflected by the reflector 2 1.
- the fingerprint recognition chip 3 collects and recognizes the received fingerprint image. No longer.
- Embodiment 4 of the present invention provides a method for manufacturing an optical lens.
- the manufacturing method in this embodiment is directed to the optical lens provided in Embodiment 1.
- 9 is a flowchart of a method for manufacturing an optical lens according to Embodiment 4 of the present invention. As shown in FIG. 9, the manufacturing method of this embodiment includes the following steps:
- the light-shielding member of the optical lens includes a light-transmissive base material layer and a light-shielding layer.
- the light-shielding layer is disposed on the base material layer, the base material layer can transmit light, and the light-shielding layer is used to block the passage of light.
- the material of the transparent substrate layer can be any transparent material with certain mechanical strength such as crystal, glass, organic material, etc. The above transparent material is processed into the desired shape of the substrate layer, and the shape of the substrate layer depends on the screen side The accommodation space of the square and the optical path design of the fingerprint recognition module are determined, and the specific shape of the substrate layer is not limited in this embodiment.
- a light-shielding layer can be provided on one side surface of the base material layer to prevent the light from passing through.
- a light-shielding layer is provided on the light-transmissive base material layer to form a light-shielding member, which specifically includes: coating the light-shielding layer on one side surface of the base material layer to form the light-shielding member.
- the light-shielding layer in this embodiment may be a film layer on the surface of the base material layer, and the light-shielding layer may be coated on one surface of the base material layer through uniform coating, plasma spraying, printing, film sticking, metal plating and other processes. After the shading layer is fixedly formed on the surface of the substrate layer, a shading member is formed.
- a light-transmitting hole is processed on the shading member, so that the optical path of the fingerprint image reflected by the reflector to the optical lens can form a reduced and clear fingerprint image through the light-transmitting hole.
- the portion of the shading member without the light-transmitting hole prevents the light path of the fingerprint image from passing through due to the light-shielding layer, so that the light path of the fingerprint image is imaged through the light-transmitting hole.
- the light-transmitting holes may be provided only on the light-shielding layer, or may penetrate the light-shielding layer and the base material layer, as long as the light can form a reduced and clear fingerprint image through the light-transmitting holes.
- the embodiment is not limited.
- the light-transmitting holes may be provided on the light-shielding layer.
- forming a light-transmitting hole for imaging on the light-shielding member includes specifically: opening a through-hole in the light-shielding layer, and forming the light-transmitting hole in the through-hole.
- the light-shielding layer is a thin film layer, which can be easily processed on the light-shielding layer regardless of the processing technology
- Through-holes as long as the through-holes as the light-transmitting holes have the required size and shape of the optical lens, the optical path of the fingerprint image can form a reduced and clear fingerprint image through the light-transmitting holes, and the fingerprint image can be irradiated to the fingerprint recognition chip. It suffices to be on the sensing surface.
- the specific processing technology of the transparent hole and the size and position of the transparent hole are not limited.
- the method further includes: Light lens, the optical axis of the lens passes through the light transmission hole.
- the light transmission hole is used to make the optical path of the fingerprint image form a narrow and clear fingerprint image, and the lens can further make the fingerprint image clearer.
- a lens is correspondingly arranged on the light-transmitting hole, and the optical axis of the lens passes through the light-transmitting hole, that is to say, the optical path passes through the light-transmitting hole and the lens successively when passing through the optical lens, so as to form a clearer fingerprint image.
- the lens material can be any optical material such as organic glue, plastic particles, etc.
- the lens can be processed on the surface of the transparent hole through exposure reflow, grayscale mask, wafer packaging (Wafer Level Optics, WLO) and other methods.
- the parameters such as the size, position and shape of the lens are determined according to the optical path formed by the fingerprint image between the components of the fingerprint recognition module, as long as the fingerprint image formed by the lens can meet the definition requirements and can be irradiated to the fingerprint recognition
- the sensing surface of the chip is sufficient, and the specific parameters of the lens are not limited in this embodiment.
- this embodiment can also process multiple small holes and lenses on the light-shielding layer of the substrate. No longer.
- the light of the specified wavelength needs to pass, such as infrared light, and the light of other wavelength bands needs to be filtered out.
- a filter layer needs to be provided on the substrate layer to prevent the light of the remaining wavelength bands from passing through the optical lens
- the method further includes: providing a filter layer on at least one surface of the substrate layer, the filter layer being used to filter light of a preset wavelength. It is possible to provide a light-shielding layer on one side surface of the base material layer or a light-shielding layer on both sides of the surface. For this, the first embodiment has been described in detail and will not be repeated here.
- the filter layer provided on the surface of the base material layer the light-shielding layer may be coated on the surface of the base material layer through chemical vapor deposition, evaporation, printing and other processes. There is no restriction on the specific process used, as long as it is guaranteed It is sufficient to form a uniform filter layer on the surface of the base material layer that can filter out light of a preset wavelength.
- the optical lens, the fingerprint identification module, the mobile terminal and the manufacturing method of the optical lens of the present invention is disposed in the fingerprint identification module located on the side of the screen, and the optical lens is located on the optical path of the fingerprint image reflected by the reflector, and the optical lens
- the light-shielding member includes at least one light-transmitting hole for imaging.
- the optical lens installed in the fingerprint recognition module on the side of the screen receives the fingerprint image of the fingerprint above the screen reflected by the reflector.
- the light blocking member in the optical lens can prevent the optical path of the fingerprint image from passing, so that the light of the fingerprint image can pass through Passing through the light hole, a clear inverted fingerprint image is formed through the light transmission hole, so that the fingerprint recognition chip in the fingerprint recognition module collects and recognizes the fingerprint image.
- the LCD screen which cannot self-illuminate, has a large thickness, and is opaque, can have the function of fingerprint recognition under the optical screen.
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Databases & Information Systems (AREA)
- Data Mining & Analysis (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Image Input (AREA)
- Information Transfer Between Computers (AREA)
Abstract
一种光学镜头(1)、指纹识别模组(4)、移动终端及光学镜头(1)制作方法。光学镜头(1)用于设置在位于屏幕(5)侧方的指纹识别模组(4)中,且光学镜头(1)位于反光器(2)反射的指纹图像的光路上,光学镜头(1)包括遮光件(11),遮光件(11)上具有至少一个用于成像的透光孔(111)。光学镜头(1)可应用于普通液晶显示屏幕,以使普通液晶显示屏幕能够应用光学屏下指纹技术。
Description
本发明涉及指纹识别技术领域,尤其涉及一种光学镜头及其制作方法、指纹识别模组、移动终端。
指纹识别解锁已经成为大部分手机、平板电脑等移动终端都配备的功能,目前,指纹识别技术主要包括电容式、光学式及超声波式。电容式指纹传感器是目前应用较为广泛的一种,其通过放置于面板下方的电容传感器来采集使用者的手指纹路信息。而随着手机全面屏时代的到来,电容传感器因难以放置于屏幕下方而逐渐被摒弃,超声波式技术尚在初期发展阶段,其技术成本无法下降,因此,在屏下指纹的应用中以光学式屏下指纹最为普及。
由于有机发光二极管(organic light-emitting diode,OLED)屏幕可自发光,屏幕厚度薄,且整体屏幕结构均为透光材料,现有的光学屏下指纹识别装置均是应用于OLED屏幕上。具体的,OLED屏幕发出的光通过像素间隙照射到屏幕指纹解锁区域上覆盖的使用者的指纹,利用光学元件将从指纹处反射回的光线形成指纹图像,将指纹图像传导至屏幕下方的光学传感器,通过光学传感器对指纹图像进行采集和识别。
然而,受OLED屏幕成本和产能的影响,导致与之匹配的光学屏下指纹也无法大面积的推广应用,因此,研发适用于普通液晶显示器(Liquid Crystal Display,LCD)屏幕的光学指纹技术迫在眉睫。
发明内容
本发明提供一种光学镜头、指纹识别模组、移动终端及光学镜头制作方法,以实现屏下光学指纹在LCD屏幕的应用。
第一方面,本发明提供一种光学镜头,光学镜头用于设置在位于屏幕侧方的指纹识别模组中,且光学镜头位于反光器反射的指纹图像的光路上,光 学镜头包括遮光件,遮光件上具有至少一个用于成像的透光孔。
可选的,光学镜头还包括至少一个用于聚光的透镜,透镜设置在遮光件上并与透光孔一一对应设置,且透镜的光轴经过对应的透光孔。
可选的,透镜为凸透镜。
可选的,透镜位于透光孔的入光侧或者透光孔的出光侧。
可选的,透镜的入光侧为球面,出光侧为平面;或者,
透镜的入光侧为平面,出光侧为球面。
可选的,遮光件包括可透光的基材层和用于遮光的遮光层,遮光层覆盖于基材层的一侧表面;透光孔设置于遮光层上。
可选的,基材层的至少一侧表面设置有滤光层,滤光层用于过滤预设波长的光线。
可选的,基材层的厚度在100-500微米之间。
可选的,透光孔的直径在100-500微米之间。
可选的,透镜的厚度在10-30微米之间。
可选的,透光孔的数量为至少两个;
其中,至少两个透光孔在光线入射方向上层叠设置;和/或,至少两个透光孔在光线入射方向上并排设置。
第二方面,本发明提供一种指纹识别模组,指纹识别模组用于设置在屏幕侧方,指纹识别模组包括指纹识别芯片、反光器和如上所述的光学镜头,反光器用于将屏幕表面反射的指纹图像反射至光学镜头,并经过光学镜头后照射在指纹识别芯片的感应面上。
可选的,指纹识别模组还包括光源,光源设置在屏幕侧方,用于使屏幕的表面反射指纹图像。
第三方面,本发明提供一种移动终端,包括如上所述的指纹识别模组。
第四方面,本发明提供一种光学镜头制作方法,包括:
在可透光的基材层上设置遮光层,以形成遮光件;
在遮光件上形成用于成像的透光孔。
可选的,在遮光件上形成用于成像的透光孔后,还包括:在遮光件上设置用于聚光的透镜,透镜的光轴经过透光孔。
可选的,在可透光的基材层上设置遮光层,以形成遮光件,具体包括:
在基材层的一侧表面上涂覆遮光层,以形成遮光件。
可选的,在遮光件上形成用于成像的透光孔,具体包括:
在遮光层上开设通孔,并使通孔形成透光孔。
可选的,在可透光的基材层上设置遮光层之前,还包括:在基材层的至少一侧表面设置滤光层,滤光层用于过滤预设波长的光线。
本发明的光学镜头、指纹识别模组、移动终端及光学镜头制作方法,光学镜头用于设置在位于屏幕侧方的指纹识别模组中,且光学镜头位于反光器反射的指纹图像的光路上,光学镜头包括遮光件,遮光件上具有至少一个用于成像的透光孔。通过设置于屏幕侧方的指纹识别模组中的光学镜头接收反光器反射的屏幕上方的指纹的指纹图像,光学镜头中的遮光件可阻止指纹图像的光路通过,从而使指纹图像的光线从透光孔中穿过,通过透光孔形成清晰的倒立的指纹图像,从而使指纹识别模组中的指纹识别芯片对指纹图像进行采集和识别。通过在屏幕侧方设置光学镜头,能够使LCD屏幕这种无法自发光、厚度大、不透明的屏幕具备光学屏下指纹识别的功能。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单介绍,显而易见地,下面描述中的附图是本发明的一些实施例。对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例一提供的光学镜头的结构示意图;
图2为本发明实施例一提供的光学镜头的俯视图;
图3为本发明实施例一提供的指纹识别模组的一种结构示意图;
图4为本发明实施例一提供的指纹识别模组的另一种结构示意图;
图5为本发明实施例一提供的基材层的结构示意图;
图6为本发明实施例一提供的第二种光学镜头的结构示意图;
图7为本发明实施例一提供的第三种光学镜头的结构示意图;
图8为本发明实施例一提供的第四种光学镜头的结构示意图;
图9为本发明实施例四提供的光学镜头的制作方法的流程图。
附图标记说明:
1-光学镜头;11—遮光件;111—透光孔;112—基材层;113—遮光层;114—滤光层;12—透镜;13—遮光板;2—反光器;3—指纹识别芯片;4—指纹识别模组;5-屏幕;6—光源。
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
随着手机全面屏时代的到来,屏下指纹的应用越来越广泛,其中以光学式屏下指纹最为普及。由于屏幕厚度和屏幕结构的问题,目前的光学屏下指纹技术只能应用于OLED屏幕。OLED屏幕具有自发光,屏幕厚度小,且整体屏幕结构均为透光材料,可将指纹识别装置设置于OLED屏幕的下方。指纹识别装置包括光学元件和光学传感器,OLED屏幕的自发光可通过OLED像素间隙照射位于屏幕上方的指纹,从指纹反射回来的光线经过位于OLED屏幕下方的光学元件可形成指纹图像,再将指纹图像传导至屏幕下方的光学传感器,利用光学传感器对指纹图像进行采集和识别。
而传统的LCD屏幕无法自发光需要外置光源,而且由于LCD屏幕的结构膜层多导致屏幕较厚,其背部需要有反光板将外置光源的光反向屏幕,因而屏幕也无法透明,指纹识别模组难以设置在LCD屏幕的下方,这一系列特点导致光学屏下指纹技术无法应用在LCD屏幕上。而OLED屏幕相对于LCD屏幕而言,成本较高,产能也较低,这也导致了与OLED屏幕匹配的光学屏下指纹技术也无法大面积推广应用。
针对光学屏下指纹技术无法应用于普通LCD屏幕的问题,本发明实施例一提供一种光学镜头1。图1为本发明实施例一提供的光学镜头的结构示意图。如图1所示,光学镜头1用于设置在位于屏幕5侧方的指纹识别模组4中,且光学镜头1位于发光器反射的指纹图像的光路上,光学镜头1包括遮光件11,遮光件11具有至少一个用于成像的透光孔111。
首先,本实施例的光学镜头1是指纹识别模组4的一部分,而指纹识别模组4设置于屏幕5的侧方,如此一来,克服了指纹识别模组4应当设置于屏幕5下方而LCD屏幕5下方难以设置指纹识别模组4的问题。利用屏幕5侧方的指纹识别模组4中的反光器2对屏幕5上方的指纹反射的指纹图像进行反射,而光学镜头1设置在反光器2反射的指纹图像的光路上,通过光学镜头1使反射的指纹图像形成缩小的、清晰的指纹图像的倒像,之后,指纹图像会照射至指纹识别芯片3的感应面上,通过指纹识别芯片3对指纹图像进行采集和识别。
具体的,光学镜头1将指纹图像形成缩小的、清晰的指纹图像是通过遮光件11,遮光件11上设置有用于成像的透光孔111。指纹图像的光路在通过遮光件11时,遮光件11的其余部位会阻止光线的通过,而使光线从透光孔111中通过,通过透光孔111的光线在光学镜头1出光侧形成缩小的、清晰的指纹图像的倒像,如此,利用透光孔111以形成缩小且清晰的指纹图像,以便于指纹识别芯片3进行采集和识别。
进一步的,遮光件11上用于成像的透光孔111为至少一个,通常情况下,可以设置一个透光孔111,即可以形成缩小、清晰的指纹图像;而在指纹识别模组4具有足够的空间的情况下,可以增大遮光件11的尺寸,也可以在遮光件11上设置多个透光孔111。通过设置多个透光孔111,每个透光孔111均可形成一个指纹图像,多个指纹图像重叠照射至指纹识别芯片3之后,指纹图像的每个区域的清晰程度都会增强,可使得指纹识别芯片3更易采集和识别。
为了使指纹图像通过光学镜头1之后可以形成更清晰的图像,本实施例的光学镜头1还包括至少一个用于聚光的透镜12,透镜12设置在遮光件11上并与透光孔111一一对应设置,且透镜12的光轴经过对应的透光孔111。从屏幕5反射回来的指纹图像的光路经过反光器2反射至光学镜头1,通过光学镜头1的透光孔111形成缩小、清晰的指纹图像,而在透光孔111上还设置有透镜12,透镜12可对形成的指纹图像的光路进一步汇聚,以形成更加缩小的、更加清晰的指纹图像,可以使指纹识别芯片3更快速、灵敏的采集和识别更为清晰的指纹图像,进一步提高指纹识别模组4的工作效率和精准度。
图2为本发明实施例一提供的光学镜头的俯视图。如图2所示,透镜12的光轴经过对应的透光孔111,也就是说,透镜12的中心线经过透光孔111,如此,经反光器2反射至光学镜头1的指纹图像一定会先后通过透光孔111和透镜12,而无论是先通过透光孔111再通过透镜12,还是先通过透镜12再通过透光孔111,都可以使指纹图像在经过光学镜头1之后形成缩小、清晰的指纹图像,以使指纹图像能够清晰、完整的照射在指纹识别芯片3上,即是说,经透光孔111和透镜12缩小之后的指纹图像的尺寸大小能够符合指纹识别芯片3的要求,指纹图像能够全部位于指纹识别芯片3的感应区域内,以使指纹识别芯片3能够采集到完整的指纹信息;并且,照射至指纹识别芯片3的指纹图像的清晰度亦能够符合指纹识别芯片3的要求,经过透光孔111和透镜12形成的指纹图像能够清晰的显示具体的纹路,以使指纹识别芯片3对采集到的指纹图像能够精确的进行识别。
进一步的,透镜12可以为凸透镜。凸透镜是中间厚、边缘薄的一种常见的透镜12,本实施例的凸透镜可以是如图1所示一个表面制成球面,另一个表面为平面,将透镜12平面的一侧与遮光件11进行组装,遮光件11和透镜12接触的部位也是平面,可以使透镜12和遮光件11更易被组装为一体;当然,本实施例的凸透镜也可以是两面都制成球面,可根据凸透镜与遮光体接触的一侧的具体表面形状确定遮光体的表面形状,使遮光体和凸透镜能够匹配。具体的,在对凸透镜的表面形状进行选择时,主要依据屏幕5的指纹区域、反光器2、光学镜头1及指纹识别芯片3之间形成的光路,以使反光器2反射的指纹图像能够通过光学镜头1的透光孔111和凸透镜照射至指纹识别芯片3上,凸透镜能够起到聚光使指纹图像更清晰的作用即可,对凸透镜的具体表面形状不作限制。
光学镜头1的透光孔111起成像的作用,透镜12是将指纹图像的光路进行汇聚,使形成的指纹图像更清晰,可以先利用透光孔111对指纹图像的光路进行成像处理,成像之后再经过透镜12对指纹图像进行进一步清晰化处理,当然,也可以先对反光器2反射的指纹图像的光路通过透镜12进行汇聚使其更清晰,之后在通过透光孔111形成缩小的、清晰的指纹图像。因此,本实施例的透镜12可以位于透光孔111的入光侧或者透光孔111的出光侧。
其中,对于透镜12位于透光孔111的入光侧的情形,图3为本发明实施 例一提供的指纹识别模组的一种结构示意图。如图3所示,从反光器2反射至光学镜头1的指纹图像的光路先经过透镜12,透镜12对光路进行汇聚形成清晰的指纹图像之后,在经过透光孔111形成缩小的、更加清晰的指纹图像,之后再将指纹图像照射至指纹识别芯片3。对于透镜12位于透光孔111的出光侧的情形,图4为本发明实施例一提供的指纹识别模组的另一种结构示意图。如图4所示,从反光器2反射至光学镜头1的指纹图像的光路先经过透光孔111,通过透光孔111以形成缩小的、清晰的指纹图像的倒像,之后在经过透镜12使形成的指纹图像的倒像进一步缩小和清晰,通过透镜12之后形成的指纹图像再照射至指纹识别芯片3。
具体的,以本实施例的透镜12为一个表面为球面、另一个表面为平面的平凸透镜为例,遮光体和透镜12的接触面可以是平面,依靠透镜12的平面将透镜12和遮光体组装为一体。透镜12入光侧可以为球面,出光侧可以为平面;或者,透镜12的入光侧可以为平面,出光侧可以为球面。如图3所示,透镜12位于透光孔111的入光侧,即指纹图像的光路先通过透镜12再通过透光孔111,加之透镜12的平面和透光孔111贴合,透镜12的球面背离遮光体,则指纹图像的光路先通过透镜12的球面再通过其平面,即透镜12的入光侧为球面、出光侧为平面;如图4所示,透镜12位于透光孔111的出光侧,即指纹图像的光路先通过透光孔111再通过透镜12,那么,通过透镜12时就是先通过与透光孔111贴合的透镜12的平面,再通过透镜12的球面,即透镜12的入光侧为平面、出光侧为球面。
本实施例的遮光件11是使反光器2反射的指纹图像的光路不能经过遮光件11的其余部位,其余部位都是阻止光线通过的,以使光路能从透光孔111通过形成缩小、清晰的指纹图像。具体的,本实施例的遮光件11可以包括可透光的基材层112和用于遮光的遮光层113,遮光层113覆盖于基材层112的一侧表面。基材层112是光学镜头1主要的支撑结构,基材层112是可透光的,其可以是水晶、玻璃、有机材料等任何具有一定强度的透明材料,基材层112不阻止光线通过,在基材层112上还设置有用以阻止光线通过的遮光层113。
进一步的,透光孔111设置于遮光层113上。指纹图像的光路需通过透光孔111,进而照射至指纹识别芯片3。若将透光孔111设置于基材层112上, 在光路通过光学镜头1时,如图3及图4所示,无论是光路先通过透镜12还是先通过小孔,由于遮光层113的设置,光路均会被阻断在入光侧一侧的遮光层113的表面上。因此,将透光孔111设置在遮光层113上,光路通过遮光层113时会被遮光层113的其他部位阻挡,而使反射的光线全部从透光孔111处通过。当然,透光孔111也可以贯穿遮光层113和基材层112,由于基材层112可透光,因此,透光孔111穿过或不穿过基材层112,光路可同样通过透光孔111照射至指纹识别芯片3。为了确保基材层112具有足够的强度以支撑整个光学镜头1,可以只将透光孔111设置在遮光层113上。
指纹识别芯片3可以是通过自然白光或是红外光等其他一些特定波段的光线来采集和识别的指纹信息,那么,通过光学镜头1照射至指纹识别芯片3的指纹图像的光线就应是匹配指纹识别芯片3能够采集和识别的波段的光线。对于指纹识别芯片3采集和识别的光线为自然白光的情况,遮光体可以只包括基材层112和遮光层113,通过遮光体的光线为自然白光即可。
而对于指纹识别芯片3采集和识别的为红外光等一些特定波段光线的情况,就需要滤除其他不能被指纹识别芯片3采集和识别的波段的光线。对此,图5为本发明实施例一提供的基材层的结构示意图。如图5所示,本实施例的基材层112的至少一侧表面可以设置有滤光层114,滤光层114用于过滤预设波长的光线。设置在基材层112表面的滤光层114具有滤除光线的作用,通过滤光层114可以使不能被指纹芯片采集和识别的光线不能通过光学镜头1,而只允许与指纹识别芯片3匹配的特定波段的光线通过光学镜头1。
滤光层114可以只设置于基材层112的一侧表面,或者,基材层112的两侧表面均设置滤光层114,这取决于所需光线的特定波段。例如,需要使500纳米以上波段的光线能够通过光学镜头1,则只需在基材层112一侧表面设置滤除500纳米以下波段光线的遮光层113;若需要使700纳米以下波段的光线能够通过光学镜头1,则只需在基材层112一侧表面设置滤除700纳米以上波段光线的遮光层113;而若需要使500纳米以上、700纳米以下波段的光线能够通过光学镜头1,则需要在基材层112一侧表面设置滤除500纳米以下波段光线的遮光层113,而在基材层112的另一侧表面还要设置滤除700纳米以上波段光线的遮光层113。
本实施例提供的光学镜头1主要用于手机、平板电脑等一些移动终端上, 这些移动终端的尺寸都比较小,且光学镜头1是设置在屏幕5侧方,因此,光学镜头1的尺寸相对于移动终端更小,以使其能够与移动终端相匹配。本实施例中,基材层112的厚度可以在100-500微米之间,基材层112作为光学镜头1的主体支撑构件,其厚度决定了光学镜头1能否放置在屏幕5侧方的空间内,本实施例的基材层112的厚度为百微米级,尺寸微小,符合要求。具体的,基材层112的厚度可以为200微米、300微米、400微米等,本实施例不作限制。
同样,透光孔111的直径可以在100-500微米之间。一方面,较小的透光孔111直径与光学镜头1的整体尺寸相匹配;另一方面,透光孔111的直径小,通过透光孔111形成的指纹图像也就更小且更加清晰。具体的,透光孔111的直径可以是200微米、300微米、400微米等,本实施例不作限制。
透镜12的厚度可以在10-30微米之间。透镜12和透光孔111对应设置,透镜12的作用是对反光器2反射的指纹图像的光路进行汇聚,使经经过透镜12之后形成的指纹图像进一步缩小,并且更加清晰,透镜12需要设置在反光器2反射的指纹图像的光路上,并且经透镜12汇聚之后的指纹图像的光路应能够照射至指纹识别芯片3上,因此,透镜12的尺寸、位置及面型都要依据指纹图像的光路的设计需要而定。一般的,根据移动终端的外形尺寸及其屏幕5侧方的容置空间,可将透镜12的厚度设置在10-30微米之间,具体的,透镜12的厚度可以为15微米、20微米、25微米等,本实施例不作限制。
图6为本发明实施例一提供的第二种光学镜头的结构示意图。图7为本发明实施例一提供的第三种光学镜头的结构示意图。图8为本发明实施例一提供的第四种光学镜头的结构示意图。为了使经过光学镜头1之后形成的指纹图像更加清晰,使指纹图像更易被指纹识别芯片3采集和识别,透光孔111的数量可以为至少两个;其中,至少两个透光孔111在光线的入射方向上层叠设置;和/或,至少两个透光孔111在光线入射方向上并排设置。
具体的,如图6所示,图中所示为三个透光孔111在光线的入射方向上层叠设置,三个透光孔111可以设置在层叠设置的三个遮光件11上,每个透光孔111上都对应设置有透镜12。在光线入射方向上,指纹图像的光路通过第一个透光孔111及透镜12后,指纹图像被缩小和清晰化,再通过第二个透光孔111及透镜12,指纹图像进一步缩小和更加清晰,然后再通过第三个透 光孔111及透镜12,指纹图像又进一步缩小和清晰,以使指纹图像在多级缩小和清晰化之后,最终照射至指纹识别芯片3的指纹图像具有良好的清晰度。当然,还可以是两个透光孔111、四个透光孔111、五个透光孔111等层叠设置,图中所示仅是众多可实施方式其中的一种。
如图7所示,图中所示为四个透光孔111在光线入射方向上并排设置,四个透光孔111可以间隔设置在一个遮光件11上,每个透光孔111上均设置有透镜12。反光器2反射的指纹图像的光路可同时进入四个透光孔111及透镜12,每一组透光孔111和透镜12均可使指纹图像的其中一部分更为清晰,例如,其中一组透光孔111和透镜12可使得指纹图像的上半部分左侧部分更清晰,而另一组透光孔111和透镜12可使得指纹图像的下半部分左侧部分更清晰,第三组透光孔111和透镜12可使得指纹图像的上半部分右侧部分更清晰,第四组透光孔111和透镜12可使得指纹图像的下半部分右侧部分更清晰。如此,可使得照射至指纹识别芯片3的指纹图像为集成了四组透光孔111和透镜12的清晰部分形成的整体清晰度好的指纹图像。当然,也可以是两个透光孔111、三个透光孔111、五个透光孔111等并排设置,图中所示仅是众多可实施方式其中的一种。
如图8所示,图中所示为层叠设置的两层透光孔111,其中每层透光孔111均包含有四个透光孔111,每个透光孔111上均对应设置有透镜12。如前所述,在光线入射方向上层叠设置的透光孔111和透镜12可使形成的指纹图像更清晰,而并排设置的透光孔111和透镜12可使指纹图像各个部分更为清晰,将这两种方案组合为一体,可使得通过光学镜头1最终形成的指纹图像的整体清晰度有显著提升,不再赘述。
具体的,对于层叠设置透光孔111,即需要层叠间隔设置多层遮光件11,在遮光件11上设置透光孔111和透镜12的情况,多层遮光件11可以通过遮光板13进行连接,以避免光线通过第一层遮光件11的透光孔111和透镜12后形成的光路不能到达后面的遮光件11的透光孔111和透镜12;对于,每层遮光件11上设置有多个透光孔111和透镜12的情况,可以在相邻的透光孔111和透镜12之间均设置遮光板13,以使光路能够从前一层遮光件11的透光孔111和透镜12径直通过下一层的遮光件11的透光孔111和透镜12。
需要说明的是,对于一些外形尺寸较小的移动终端,例如手机,可在屏 幕5侧方设置只具有一个透光孔111和透镜12的光学镜头1,即可达到形成缩小的、清晰的指纹图像;而在一些外形尺寸较大的移动终端,例如平板电脑,可在屏幕5侧方设置具有多个层叠设置和/或并排设置的透光孔111和透镜12的光学镜头1,以使形成的指纹图像的清晰度更好,对此,本实施例不作具体限制。另外,多个层叠设置和/或并列设置的透光孔111的上方也可以不设置透镜12,这取决于形成的指纹图像的清晰度,可以根据形成的指纹图像的清晰度是否足以使指纹识别芯片3感应来决定是否在透光孔111的上方设置透镜12。
本发明实施例二提供一种指纹识别模组4,指纹识别模组4用于设置在屏幕5侧方,指纹识别模组4包括指纹识别芯片3、反光器2和实施例一所述的光学镜头1,反光器2用于将屏幕5表面反射的指纹图像反射至光学镜头1,并经过光学镜头1后照射在指纹识别芯片3的感应面上。
本实施例的指纹识别模组4可应用于传统的LCD屏幕5。如图3或图4所示,指纹识别模组4位于屏幕5侧方,指纹识别模组4包括反光器2、光学镜头1和指纹识别芯片3,反光器2用于将屏幕5表面的指纹反射的光线反射至光学镜头1,光学镜头1用于使接收到的反光器2反射的光线形成缩小的、清晰的指纹图像,再将指纹图像照射至指纹识别芯片3的感应面上,通过指纹识别芯片3对指纹图像进行采集和识别。
具体的,如图3或图4所示,当移动终端的使用者的手指接触屏幕5,光线照射至屏幕5上方的手指接触屏幕5的指纹区域,屏幕5上形成的指纹图像通过手指反射至反光器2,通过反光器2将指纹图像反射至光学镜头1,指纹图像形成的光路通过光学镜头1的透光孔111和透镜12之后形成缩小、清晰的指纹图像,指纹图像通过光学镜头1照射至指纹识别芯片3的感应面上,指纹识别芯片3对接收到的指纹图像进行采集和识别。
进一步的,指纹识别模组4还可以包括光源6,光源6设置在屏幕5侧方,用于使屏幕5的表面反射指纹图像。如图3或图4所示,光源6用于发出光线,并照射至位于屏幕5上方的指纹区域,以使屏幕5上形成的指纹图像通过手指反射至反光器2。本实施例中,在光源6、屏幕5上方的手指、反光器2、光学镜头1及指纹识别芯片3之间需形成完整的光路,因此,可以依据设计的光路确定指纹识别模组4的个组件的位置及尺寸。另外,对于LCD 屏幕5的外置光源6位于指纹识别模组4的区域,而外置光源6又可以和指纹识别模组4的其他组件之间形成完整的光路,最终能够使指纹识别芯片3对指纹图像进行采集和识别,也可以不单独设置光源6,而依靠LCD屏幕5自身的外置光源6作为指纹识别模组4的光源6。
本发明实施例三提供一种移动终端,移动终端可以是手机、平板电脑等,本实施例的移动终端包括实施例二所述的指纹识别模组4。指纹识别模组4位于屏幕5侧方,指纹识别模组4包括指纹识别芯片3、反光器2和实施例一所述的光学镜头1。
如图3或图4所示,指纹识别模组4位于移动终端的屏幕5侧方,指纹识别模组4可以包括光源6、反光器2、光学镜头1和指纹识别芯片3,光源6用于发出光线并照射至屏幕5上方的指纹区域,反光器2用于将屏幕5表面的指纹反射的光线反射至光学镜头1,光学镜头1用于使接收到的反光器2反射的光线形成缩小的、清晰的指纹图像,再将指纹图像照射至指纹识别芯片3的感应面上,通过指纹识别芯片3对指纹图像进行采集和识别。
具体的,如图3或图4所示,当移动终端的使用者的手指接触屏幕5,光线照射至屏幕5上方的手指接触屏幕5的指纹区域,屏幕5上形成的指纹图像通过手指反射至反光器2,通过反光器2将指纹图像反射至光学镜头1,指纹图像形成的光路通过光学镜头1的透光孔111和透镜12之后形成缩小、清晰的指纹图像,指纹图像通过光学镜头1照射至指纹识别芯片3的感应面上,指纹识别芯片3对接收到的指纹图像进行采集和识别。不再赘述。
本发明实施例四提供一种光学镜头的制作方法,本实施例的制作方法针对实施例一提供的光学镜头。图9为本发明实施例四提供的光学镜头的制作方法的流程图。如图9所示,本实施例的制作方法包括如下步骤:
S101、在可透光的基材层上设置遮光层,以形成遮光件。
光学镜头的遮光件包括可透光的基材层和遮光层,遮光层设置于基材层上,基材层可使光线透过,而遮光层用于阻挡光线的通过。可透光的基材层的材料可以使用水晶、玻璃、有机材料等任何具有一定机械强度的透明材料,将上述透明材料加工成基材层所需的形状,而基材层的形状根据屏幕侧方的容置空间和指纹识别模组的光路设计来决定,对基材层的具体形状,本实施例不作限制。
加工好基材层之后,即可在基材层其中一侧表面上设置遮光层,以达到阻止光线通过的目的。可选的,在可透光的基材层上设置遮光层,以形成遮光件,具体包括:在基材层的一侧表面上涂覆遮光层,以形成遮光件。
本实施例的遮光层可以为基材层表面的一层膜层,可以通过匀胶涂布、等离子喷涂、印刷、贴膜、镀金属等工艺在基材层的一侧表面上涂覆遮光层,待遮光层在基材层表面固定成型之后,便形成了遮光件。
S102、在遮光件上形成用于成像的透光孔。
在遮光件加工完成之后,在遮光件上加工透光孔,以使反光器反射至光学镜头的指纹图像的光路能够通过透光孔形成缩小、清晰的指纹图像。其中,未设置透光孔的遮光件的部分,由于遮光层的设置而阻止指纹图像的光路通过,以使指纹图像的光路通过透光孔成像。
在遮光件上加工透光孔时,透光孔可以仅设置于遮光层上,也可以贯穿遮光层和基材层,只要确保光线能够通过透光孔形成缩小、清晰的指纹图像即可,本实施例不作限制。
而为了保证基材层作为光学镜头的主体支撑部件具有足够的结构强度,可以将透光孔设置在遮光层上。对此,在遮光件上形成用于成像的透光孔,具体包括:在遮光层上开设通孔,并使通孔形成透光孔。
可通过曝光显影、激光雕刻、蚀刻、机加工等工艺在遮光层上加工出通孔,遮光层为较薄的膜层,无论是哪种加工工艺均可较容易的实现在遮光层上加工出通孔,只要作为透光孔的通孔具备光学镜头的所需尺寸及形状,能够使指纹图像的光路通过透光孔形成缩小、清晰的指纹图像,并能够将指纹图像照射至指纹识别芯片的感应面上即可,本实施例对透光孔的具体的加工工艺及透光孔的尺寸、位置等均不作限制。
为了使经过光学镜头之后形成的指纹图像更清晰,更易被指纹识别芯片采集和识别,进一步的,在遮光件上形成用于成像的透光孔后,还包括:在遮光件上设置用于聚光的透镜,透镜的光轴经过透光孔。透光孔用于使指纹图像的光路形成缩小、清晰的指纹图像,而透镜则可以进一步使指纹图像更清晰。在透光孔上对应设置透镜,透镜的光轴穿过透光孔,也就是说,光路在经过光学镜头时会先后经过透光孔和透镜,以形成更加清晰的指纹图像。
具体的,透镜的材料可以是有机胶、塑胶粒子等任何光学材料,可以通 过曝光回流、灰度掩模、晶圆封装(Wafer Level Optics,WLO)等方式在透光孔表面加工出透镜。而透镜的尺寸、位置及面型等参数是依照指纹图像在指纹识别模组各组件之间形成的光路来决定的,只要确保通过透镜形成的指纹图像能够满足清晰度要求并且能够照射至指纹识别芯片的感应面即可,本实施例对透镜的具体参数不作限制。
另外,根据移动终端的尺寸形状大小及光路设计的需求,若需要多个对应设置的透光孔和透镜,本实施例也可以在基材的遮光层上加工多个小孔和透镜,在此不再赘述。
对于光学镜头需要使指定的波长的光线通过,例如红外光,而需要将其他波段的光线滤除,就需要在基材层上设置滤光层,以阻止其余波段的光线通过光学镜头的透光孔和透镜,对此,在实施例一中已进行了详细的叙述,在此不再赘述。
具体的,在可透光的基材层上设置遮光层之前,还包括:在基材层的至少一侧表面设置滤光层,滤光层用于过滤预设波长的光线。在基材层的单侧表面设置遮光层或者双侧表面都设置遮光层均可,对此,在实施例一中已进行了详细的叙述,在此不再赘述。对于将基材层的表面上设置滤光层,可以是通过化学气相沉积、蒸镀、印刷等工艺将遮光层涂覆于基材层的表面上,对于具体采用哪种工艺不作限制,只要保证能在基材层表面形成均匀的、可滤除预设波长光线的滤光层即可。
本发明的光学镜头、指纹识别模组、移动终端及光学镜头制作方法,光学镜头设置在位于屏幕侧方的指纹识别模组中,且光学镜头位于反光器反射的指纹图像的光路上,光学镜头包括遮光件,遮光件上具有至少一个用于成像的透光孔。通过设置于屏幕侧方的指纹识别模组中的光学镜头接收反光器反射的屏幕上方的指纹的指纹图像,光学镜头中的遮光件可阻止指纹图像的光路通过,从而使指纹图像的光线从透光孔中穿过,通过透光孔形成清晰的倒立的指纹图像,从而使指纹识别模组中的指纹识别芯片对指纹图像进行采集和识别。通过在屏幕侧方设置光学镜头,能够使LCD屏幕这种无法自发光、厚度大、不透明的屏幕具备光学屏下指纹识别的功能。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的 普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (19)
- 一种光学镜头,其特征在于,所述光学镜头用于设置在位于屏幕侧方的指纹识别模组中,且所述光学镜头位于反光器反射的指纹图像的光路上,所述光学镜头包括遮光件,所述遮光件上具有至少一个用于成像的透光孔。
- 根据权利要求1所述的光学镜头,其特征在于,所述光学镜头还包括至少一个用于聚光的透镜,所述透镜设置在所述遮光件上并与所述透光孔一一对应设置,且所述透镜的光轴经过对应的所述透光孔。
- 根据权利要求2所述的光学镜头,其特征在于,所述透镜为凸透镜。
- 根据权利要求3所述的光学镜头,其特征在于,所述透镜位于所述透光孔的入光侧或者所述透光孔的出光侧。
- 根据权利要求4所述的光学镜头,其特征在于,所述透镜的入光侧为球面,出光侧为平面;或者,所述透镜的入光侧为平面,出光侧为球面。
- 根据权利要求1-5任一项所述的光学镜头,其特征在于,所述遮光件包括可透光的基材层和用于遮光的遮光层,所述遮光层覆盖于所述基材层的一侧表面;所述透光孔设置于所述遮光层上。
- 根据权利要求6所述的光学镜头,其特征在于,所述基材层的至少一侧表面设置有滤光层,所述滤光层用于过滤预设波长的光线。
- 根据权利要求6所述的光学镜头,其特征在于,所述基材层的厚度在100-500微米之间。
- 根据权利要求6所述的光学镜头,其特征在于,所述透光孔的直径在100-500微米之间。
- 根据权利要求2-5任一项所述的光学镜头,其特征在于,所述透镜的厚度在10-30微米之间。
- 根据权利要求1-5任一项所述的光学镜头,其特征在于,所述透光孔的数量为至少两个;其中,至少两个所述透光孔在光线入射方向上层叠设置;和/或,至少两个所述透光孔在所述光线入射方向上并排设置。
- 一种指纹识别模组,其特征在于,所述指纹识别模组用于设置在屏幕侧方,所述指纹识别模组包括指纹识别芯片、反光器和权利要求1-11任一 项所述的光学镜头,所述反光器用于将所述屏幕表面反射的指纹图像反射至所述光学镜头,并经过所述光学镜头后照射在所述指纹识别芯片的感应面上。
- 根据权利要求12所述的指纹识别模组,其特征在于,还包括光源,所述光源设置在所述屏幕侧方,用于使所述屏幕的表面反射指纹图像。
- 一种移动终端,其特征在于,包括权利要求12-13任一项所述的指纹识别模组。
- 一种光学镜头制作方法,其特征在于,包括:在可透光的基材层上设置遮光层,以形成遮光件;在所述遮光件上形成用于成像的透光孔。
- 根据权利要求15所述的制作方法,其特征在于,所述在所述遮光件上形成用于成像的透光孔后,还包括:在所述遮光件上设置用于聚光的透镜,所述透镜的光轴经过所述透光孔。
- 根据权利要求15所述的制作方法,其特征在于,所述在可透光的基材层上设置遮光层,以形成遮光件,具体包括:在所述基材层的一侧表面上涂覆所述遮光层,以形成所述遮光件。
- 根据权利要求17所述的制作方法,其特征在于,所述在所述遮光件上形成用于成像的透光孔,具体包括:在所述遮光层上开设通孔,并使所述通孔形成所述透光孔。
- 根据权利要求17所述的制作方法,其特征在于,所述在可透光的基材层上设置遮光层之前,还包括:在所述基材层的至少一侧表面设置滤光层,所述滤光层用于过滤预设波长的光线。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201880002620.5A CN109690564A (zh) | 2018-12-04 | 2018-12-04 | 光学镜头及其制作方法、指纹识别模组、移动终端 |
| PCT/CN2018/119036 WO2020113396A1 (zh) | 2018-12-04 | 2018-12-04 | 光学镜头及其制作方法、指纹识别模组、移动终端 |
| US16/317,359 US20210334118A1 (en) | 2018-12-04 | 2018-12-05 | Opening local files in remote applications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/119036 WO2020113396A1 (zh) | 2018-12-04 | 2018-12-04 | 光学镜头及其制作方法、指纹识别模组、移动终端 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020113396A1 true WO2020113396A1 (zh) | 2020-06-11 |
Family
ID=66190468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2018/119036 Ceased WO2020113396A1 (zh) | 2018-12-04 | 2018-12-04 | 光学镜头及其制作方法、指纹识别模组、移动终端 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20210334118A1 (zh) |
| CN (1) | CN109690564A (zh) |
| WO (1) | WO2020113396A1 (zh) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111095272B (zh) * | 2019-08-09 | 2024-05-03 | 深圳市汇顶科技股份有限公司 | 指纹识别模组、屏下光学指纹系统及电子装置 |
| CN114223190A (zh) * | 2019-09-29 | 2022-03-22 | Oppo广东移动通信有限公司 | 显示屏、显示组件和电子装置 |
| CN110717437B (zh) * | 2019-10-08 | 2023-08-22 | 京东方科技集团股份有限公司 | 光学准直器、指纹识别装置、显示基板、显示装置 |
| CN110852238B (zh) * | 2019-11-06 | 2025-10-21 | 昆山丘钛生物识别科技有限公司 | 一种屏下光学指纹模组和指纹识别移动终端 |
| US11921592B2 (en) * | 2020-07-20 | 2024-03-05 | Google Llc | Restoration of a computing session |
| US11888009B2 (en) * | 2020-08-17 | 2024-01-30 | Au Optronics Corporation | Sensing apparatus having light-transmitting adhesive layer |
| US12293127B2 (en) * | 2023-03-20 | 2025-05-06 | Omnissa, Llc | Redirecting applications between remote desktops |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6057538A (en) * | 1996-09-07 | 2000-05-02 | U.S. Philips Corporation | Image sensor in which each lens element is associated with a plurality of pixels |
| CN101488184A (zh) * | 2008-01-18 | 2009-07-22 | 索尼株式会社 | 生物识别系统 |
| CN105870142A (zh) * | 2016-04-29 | 2016-08-17 | 格科微电子(上海)有限公司 | 光学指纹识别装置的形成方法 |
| CN107358216A (zh) * | 2017-07-20 | 2017-11-17 | 京东方科技集团股份有限公司 | 一种指纹采集模组、显示装置及指纹识别方法 |
| WO2018210317A1 (en) * | 2017-05-17 | 2018-11-22 | Shenzhen GOODIX Technology Co., Ltd. | Optical fingerprint sensor with non-touch imaging capability |
-
2018
- 2018-12-04 CN CN201880002620.5A patent/CN109690564A/zh active Pending
- 2018-12-04 WO PCT/CN2018/119036 patent/WO2020113396A1/zh not_active Ceased
- 2018-12-05 US US16/317,359 patent/US20210334118A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6057538A (en) * | 1996-09-07 | 2000-05-02 | U.S. Philips Corporation | Image sensor in which each lens element is associated with a plurality of pixels |
| CN101488184A (zh) * | 2008-01-18 | 2009-07-22 | 索尼株式会社 | 生物识别系统 |
| CN105870142A (zh) * | 2016-04-29 | 2016-08-17 | 格科微电子(上海)有限公司 | 光学指纹识别装置的形成方法 |
| WO2018210317A1 (en) * | 2017-05-17 | 2018-11-22 | Shenzhen GOODIX Technology Co., Ltd. | Optical fingerprint sensor with non-touch imaging capability |
| CN107358216A (zh) * | 2017-07-20 | 2017-11-17 | 京东方科技集团股份有限公司 | 一种指纹采集模组、显示装置及指纹识别方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109690564A (zh) | 2019-04-26 |
| US20210334118A1 (en) | 2021-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11455823B2 (en) | Under-screen fingerprint identification apparatus and electronic device | |
| EP3748532B1 (en) | Optical fingerprint recognition apparatus and electronic device | |
| CN108734073B (zh) | 一种检测装置及终端设备 | |
| CN209962265U (zh) | 指纹识别装置和电子设备 | |
| CN107799541B (zh) | 集成化感测模块及其制造方法以及集成化感测组件 | |
| CN109784303B (zh) | 显示装置 | |
| CN109993051B (zh) | 生物特征成像装置以及用于制造生物特征成像装置的方法 | |
| CN110945527B (zh) | 指纹识别装置和电子设备 | |
| CN114625264B (zh) | 显示装置 | |
| CN209496385U (zh) | 屏下指纹识别装置和电子设备 | |
| WO2022016547A1 (zh) | 指纹识别装置和电子设备 | |
| CN109690564A (zh) | 光学镜头及其制作方法、指纹识别模组、移动终端 | |
| CN110580473A (zh) | 指纹识别组件、显示组件、以及电子设备 | |
| TWI756056B (zh) | 感測裝置 | |
| TWM592604U (zh) | 感光模組及取像裝置 | |
| CN110546649A (zh) | 屏下光学指纹识别装置及系统、扩散膜和液晶显示屏 | |
| CN110709860A (zh) | 指纹识别的装置和电子设备 | |
| CN111108509A (zh) | 指纹检测装置和电子设备 | |
| KR20220073835A (ko) | 이미지 수집 광학 구조 및 생체 특징의 진위를 감별하는 방법과 전자 장치 | |
| WO2018188670A1 (zh) | 一种检测装置及终端设备 | |
| KR102942582B1 (ko) | 지문 인식 장치 및 전자 기기 | |
| CN214123368U (zh) | 显示屏组件和终端设备 | |
| CN113435382A (zh) | 感测装置 | |
| CN213184287U (zh) | 光学指纹器件 | |
| CN114078888A (zh) | 光学指纹器件 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18942396 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 18942396 Country of ref document: EP Kind code of ref document: A1 |