Flashlight lampshade and intelligent terminal

Abstract

The utility model provides a flash lamp cover and an intelligent terminal, and relates to the technical field of cameras, the flash lamp cover comprises a lamp cover body, a first light emitting surface for a light source to emit light is formed on the lamp cover body, and the section of the first light emitting surface is an arc-shaped surface; the light source module comprises a first light emitting surface, a plurality of micro lens structures, the plurality of micro lens structures are distributed on the first light emitting surface, a second light emitting surface for a light source to emit light is formed on each micro lens structure, and the cross section of each second light emitting surface is an arc-shaped surface. The flash lamp shade can give consideration to both the center brightness and the four-corner uniformity, and can improve the attractive effect and the external light delicacy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of camera, in particular to a flash lamp cover and a smart terminal. BACKGROUND

[0002] The current flash lamp of the smart terminal generally has two use modes: 1. being matched with the camera for night shooting to improve the picture brightness, in which mode the LED is operated by small current pulse; 2. being used as a flashlight for night lighting, in which mode the LED is operated by constant large current. The flash lamp as an auxiliary component of the image needs to consider the central brightness and the four-corner uniformity of the emitted light.

[0003] In order to improve the central brightness of the emitted light, in the prior art, the light-emitting surface of the lamp cover provided outside the light source is changed into an arc shape.

[0004] However, when the above-mentioned light cover is provided, on the one hand, when the flash lamp is not in use, the color of the bottom LED lamp bead can be seen, which specifically shows that when the flash lamp is not in use, the patch of LDE yellow phosphor behind the lamp cover can be seen by directly looking at the flash lamp, which reduces the aesthetic effect; on the other hand, after the light energy is converged through the arc-shaped light-emitting surface, the light effect of the center is strong, but this structure has high requirements for the assembly tolerance and space limiting of the whole machine, and slight deviation will cause the four-corner uniformity to decrease. SUMMARY

[0005] In view of the above technical problems, the present application provides a flash lamp cover and a smart terminal, which can consider the central brightness and the four-corner uniformity, and can improve the aesthetic effect, weaken the light transmission of the bottom yellow LED, and improve the appearance delicacy.

[0006] To solve the above technical problems, the present application provides a flash lamp cover, comprising:

[0007] A lamp cover body, a first light-emitting surface for light emission is formed on the lamp cover body, and the cross section of the first light-emitting surface is an arc surface;

[0008] A microlens structure, the microlens structure is a plurality of microlens structures, and the plurality of microlens structures are arranged on the first light-emitting surface, a second light-emitting surface for light emission is formed on each microlens structure, and the cross section of the second light-emitting surface is an arc surface.

[0009] Optionally, the lamp cover body comprises a first light-incident surface for light incidence, and the area of the cross section perpendicular to the axis direction of the lamp cover body decreases continuously from the direction where the first light-incident surface is located to the direction away from the first light-incident surface.

[0010] Optionally, the lamp cover body is a hemispherical shape.

[0011] Optionally, the lampshade body is in a cylindrical shape, a first light-in surface is formed at the bottom of the lampshade body, a first light-out surface in an arc shape is formed at the top of the lampshade body, and a connecting surface is formed between the first light-in surface and the first light-out surface.

[0012] Optionally, the connecting surface extends straight from the direction of the first light-in surface to the direction away from the first light-in surface.

[0013] Optionally, the lampshade body is in an axis-symmetrical structure, and the arc surface is symmetrical about the axis of the lampshade body.

[0014] Optionally, the microlens structures are uniformly arranged on the first light-out surface, and a plurality of the microlens structures are symmetrical about the axis of the lampshade body.

[0015] Optionally, the flash lampshade comprises a base body, the base body is provided with a second light-in surface recessed inward, and a third light-out surface outwardly protruding is provided at the side opposite to the second light-in surface, the first light-out surface of the lampshade body corresponds in shape to the second light-in surface, the lampshade body extends into the recess, and the second light-in surface and the first light-out surface are arranged in abutment, the third light-out surface is also in an arc shape in cross section, the microlens structures are formed on the third light-out surface, and the base body and the lampshade body are different in refractive index.

[0016] Optionally, the refractive index of the lampshade body is greater than that of the base body.

[0017] Optionally, the material of the lampshade body is polymethyl methacrylate, and the material of the base body and the microlens structures is polycarbonate.

[0018] The application further provides a smart terminal comprising the flash lampshade.

[0019] As described above, the present application sets the first light exit surface of the lampshade body as an arc surface, when the light of the light source is irradiated into the lampshade body, the light will be reflected in the lampshade body for multiple times, so that the first light exit surface of the lampshade body can gather light beams with larger energy; further, since the first light exit surface of the lampshade body is provided with a plurality of micro-lens structures, and the section of the second light exit surface of each micro-lens structure is also arc-shaped. The light emitted at different positions on the first light exit surface can enter different micro-lens structures. And since the section of the second light exit surface of the micro-lens structure is also arc-shaped, the light can also be reflected multiple times in each micro-lens structure. Therefore, the flash lampshade provided by the present application can simultaneously consider the center brightness and the four-corner uniformity. Further, since the flash lampshade provided by the present embodiment is arc-shaped compared with the first light exit surface of the lampshade body, but is not provided with micro-lens structures, the center brightness is lower, which can reduce the transmittance of yellow light on the light source, so it can improve the aesthetic effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings incorporated in and forming a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application. In order to clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows, obviously, those skilled in the art can obtain other drawings according to these drawings without any creative labor.

[0021] Figure 1 A hardware structure schematic diagram of an intelligent terminal for realizing various embodiments of the present application.

[0022] Figure 2 A structure schematic diagram of the flash lamp combined with the flash lampshade according to the first embodiment.

[0023] Figure 3 A structure schematic diagram of the flash lampshade. Figure 2 A structure schematic diagram of the flash lampshade.

[0024] Figure 4 A structure schematic diagram of the light entrance surface of the flash lampshade. Figure 2 A structure schematic diagram of the light entrance surface of the flash lampshade.

[0025] Figure 5 A comparison curve schematic diagram of the spatial positions and light intensities of the planar lampshade, the curved lampshade and the flash lampshade according to the embodiment of the present application.

[0026] Figure 6 A structure schematic diagram of the flash lampshade according to the second embodiment.

[0027] Figure 7A structure diagram of a flash cover according to the third embodiment.

[0028] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. The above-described drawings have shown the specific embodiments of the present application, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application in any way, but to explain the present application to those skilled in the art by referring to the specific embodiments. DETAILED DESCRIPTION

[0029] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments are not meant to represent all implementations consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0030] It should be noted that, in this document, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element. Also, a component, feature, element, or apparatus having a designated reference name in different embodiments can have the same or different meaning in different embodiments, and its specific meaning is determined by its explanation in the specific embodiment or further combined with the context in the specific embodiment.

[0031] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, may be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, may be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0032] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0033] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0034] It should be understood that the specific embodiments described herein are merely illustrative of the application and should not be used to limit the scope of the application.

[0035] In the following description, the suffixes used for components, such as "module", "part", or "unit", are merely intended for facilitating a description of the present application, and are not intended to limit the application otherwise. Therefore, "module", "part", or "unit" can be mixedly used.

[0036] The present application provides a flash lamp cover and a smart terminal, which can take into account the center brightness and the four-corner uniformity, and can improve the aesthetic effect.

[0037] The smart terminal can be implemented in various forms. For example, the smart terminal described in the present application can include a smart terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a digital TV, a desktop computer, and the like.

[0038] The following description will be made with the smart terminal as an example, and those skilled in the art will understand that the configuration according to the embodiments of the present application can also be applied to a terminal of a fixed type, except for elements particularly used for mobile purposes.

[0039] Referring to Figure 1 , which is a hardware structure diagram of a smart terminal according to an embodiment of the present application, the smart terminal 100 can include an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (audio / video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a storage 109, a processor 110, and a power supply 111, etc. Those skilled in the art will appreciate that the smart terminal structure shown in Figure 1 The smart terminal structure shown in FIG. 1 is not intended to limit the smart terminal, and the smart terminal can include more or less components than those shown in the drawing, or combine certain components, or arrange different components.

[0040] Hereinafter, the components of the smart terminal will be described in detail with reference to Figure 1 The components of the smart terminal will be described in detail as follows:

[0041] The radio frequency unit 101 can be used for receiving and transmitting signals in the process of transmitting / receiving information or a call. Specifically, the radio frequency unit 101 receives the downlink information of the base station and provides the received information to the processor 110 for processing. In addition, the radio frequency unit 101 transmits the uplink data of the terminal to the base station. Generally, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. In addition, the radio frequency unit 101 can communicate with the network and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to the Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access 2000 (CDMA2000), Wideband Code Division Multiple Access (WCDMA), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Frequency Division Duplexing-Long Term Evolution (FDD-LTE), Time Division Duplexing-Long Term Evolution (TDD-LTE), 5G, etc.

[0042] The WiFi belongs to a short-range wireless transmission technology. The WiFi module 102 can help the user to send and receive e-mails, browse web pages, and access streaming media, etc. It provides the user with wireless broadband Internet access. Although the WiFi module 102 is shown, it is understood that it does not belong to the essential components of the smart terminal, and can be omitted as needed without changing the essence of the application. Figure 1 The WiFi module 102 is shown, but it is understood that it does not belong to the essential components of the smart terminal, and can be omitted as needed without changing the essence of the application.

[0043] The audio output unit 103 can convert audio data, which is received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109, into an audio signal and output it as sound when the smart terminal 100 is in a call signal reception mode, a speech mode, a recording mode, a voice recognition mode, a broadcast reception mode, etc. In addition, the audio output unit 103 can provide audio output related to a particular function performed by the smart terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 can include a speaker, a buzzer, etc.

[0044] The A / V input unit 104 is configured to receive audio or video signals. The A / V input unit 104 can include a graphics processor (GPU) 1041 and a microphone 1042. The graphics processor 1041 processes image data of a still picture or a video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. Processed image frames can be displayed on the display unit 106. Processed image frames can be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a telephone call mode, a recording mode, a voice recognition mode, or the like, and can process such sound into audio data. Processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in the case of the telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the process of receiving and transmitting audio signals.

[0045] The intelligent terminal 100 further includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of ambient light. The proximity sensor can turn off the display panel 1061 and / or the backlight when the intelligent terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), and can detect the magnitude and direction of gravity when at rest. The accelerometer sensor can be used in applications for identifying the posture of the mobile phone (such as switching between landscape and portrait screens, related games, and magnetometer posture calibration), vibration recognition related functions (such as a pedometer and tapping), and the like. The intelligent terminal 100 can also be configured with a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and other sensors, which are not described herein.

[0046] The display unit 106 is configured to display information input by a user or information provided to the user. The display unit 106 can include a display panel 1061, which can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0047] The user input unit 107 can be used to receive inputted numerical or character information, and to generate key signal inputs related to user settings of the intelligent terminal and control of functions. Optionally, the user input unit 107 can include a touch panel 1071 and other input devices 1072. The touch panel 1071, also called a touch screen, can collect touch operations of a user thereon or adjacent thereto (such as operations of the user using a finger, a stylus, or any suitable object or accessory on or adjacent to the touch panel 1071), and drive corresponding connection devices according to a pre-set program. The touch panel 1071 can include two parts, a touch detection device and a touch controller. The touch detection device detects the touch position of the user and detects signals caused by touch operations, and transmits the signals to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch coordinates, and sends it to the processor 110, and can also receive commands from the processor 110 and execute them. In addition, the touch panel 1071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 can also include other input devices 1072. Optionally, the other input devices 1072 can include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, on / off keys, etc.), a trackball, a mouse, a joystick, etc., without limitation.

[0048] Optionally, the touch panel 1071 can cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or adjacent thereto, it transmits to the processor 110 to determine the type of touch event, and then the processor 110 provides corresponding visual output on the display panel 1061 according to the type of touch event. Although in the above embodiment, the touch panel 1071 and the display panel 1061 are implemented as two independent components to realize the input and output functions of the intelligent terminal, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the intelligent terminal, without limitation. Figure 1

[0049] The interface unit 108 serves as an interface through which at least one external device can be connected to the intelligent terminal 100. For example, the external device can include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input / output (I / O) port, a video I / O port, an earphone port, etc. The interface unit 108 can be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the intelligent terminal 100, or can be used to transmit data between the intelligent terminal 100 and an external device. ​

[0050] The memory 109 can be used to store software programs and various data. The memory 109 can mainly include a program storage area and a data storage area, and the program storage area can store an operating system, application programs required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; and the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), and the like. In addition, the memory 109 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device.

[0051] The processor 110 is the control center of the intelligent terminal, connects all parts of the intelligent terminal through various interfaces and lines, executes the software programs and / or modules stored in the memory 109 and calls the data stored in the memory 109, executes various functions of the intelligent terminal and processes data, and thus monitors the whole intelligent terminal. The processor 110 can include one or more processing units; preferably, the processor 110 can integrate an application processor and a modem processor, and the application processor mainly processes the operating system, user interface and application programs, and the like, and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 110.

[0052] The intelligent terminal 100 can also include a power supply 111 (such as a battery) for supplying power to various components, and the power supply 111 can be logically connected to the processor 110 through a power management system, so as to realize the functions of managing charging, discharging and power consumption management through the power management system.

[0053] Although Figure 1 The intelligent terminal 100 can also include a Bluetooth module and the like, which are not described herein.

[0054] Based on the above intelligent terminal hardware structure, various embodiments of the present application are proposed.

[0055] First embodiment

[0056] As Figures 2 to 4 shown, the flash lamp cover provided by the first embodiment of the utility model includes a lamp cover body 10 and a plurality of micro-lens structures 20. The lamp cover body 10 is formed with a first light exit surface 11 for light source 40 to emit out, and the cross section of the first light exit surface 11 is an arc surface. The plurality of micro-lens structures 20 are arranged on the first light exit surface 11 of the lamp cover body 10, and each micro-lens structure 20 is formed with a second light exit surface 21 for light source 40 to emit out, and the cross section of the second light exit surface 21 of each micro-lens structure 20 is also an arc surface.

[0057] In this embodiment, by setting the first light-emitting surface 11 of the lampshade body 10 as an arc-shaped surface, when the light from the light source 40 shines into the lampshade body 10, the light will undergo multiple reflections within the lampshade body 10, so that a beam of greater energy can be concentrated on the first light-emitting surface 11 of the lampshade body 10. Furthermore, since multiple microlens structures 20 are arranged on the first light-emitting surface 11 of the lampshade body 10, and the cross-section of the second light-emitting surface 21 of each microlens structure 20 is also arc-shaped, light emitted from different positions on the first light-emitting surface 11 can enter different microlens structures 20. And since the cross-section of the second light-emitting surface 21 of the microlens structure 20 is also arc-shaped, the light can undergo multiple reflections within each microlens structure 20.

[0058] like Figure 5 As shown, curve A represents the relationship between the spatial position and light intensity of light after passing through the lampshade body 10 when the first light-emitting surface 11 of the lampshade body 10 is planar; curve B represents the relationship between the spatial position and light intensity of light after passing through the lampshade body 10 when the first light-emitting surface 11 of the lampshade body 10 is curved but without the microlens structure 20; curve C represents the relationship between the spatial position and light intensity of light after passing through the flash lampshade provided in this embodiment. Figure 5 It can be seen that although the center brightness of curve C is slightly lower than that of curve B, it is significantly greater than that of curve A. At the same time, the slope of curve C changes more gently than that of curve B, meaning that the uniformity at the four corners is better. Therefore, the flash lamp cover provided in this application can simultaneously achieve both center brightness and uniformity at the four corners. Furthermore, since the flash lamp cover provided in this embodiment has a lower center brightness compared to the first light-emitting surface 11 of the lamp cover body 10, which is curved but does not have a microlens structure 20, this can reduce the transmittance of the light source 40, such as the yellow light from the LED, thus improving the aesthetic effect.

[0059] Furthermore, the lampshade body 10 may also include a first light-incident surface 12 into which the light source 40 enters. Understandably, when the lampshade body 10 is combined with the light source 40, the light emitted by the light source 40 will enter the lampshade body 10 from the first light-incident surface 12, then exit from the first light-exiting surface 11, and enter the microlens structure 20, and finally exit from the second light-exiting surface 21 of the microlens structure 20.

[0060] From the direction where the first light-incident surface 12 is located to the direction away from the first light-incident surface 12, the area of ​​the cross section perpendicular to the axis of the lampshade body 10 continuously decreases. The farthest point on the lampshade body 10 from the first light-incident surface 12 is the top of the arc-shaped surface on the first light-emitting surface 11.

[0061] Further, the lampshade body 10 can be an axis-symmetrical structure, that is, the arc surface is symmetrical about the axis of the lampshade body 10. In the embodiment, the lampshade body 10 can be a semi-spherical shape. The microlens structures 20 are uniformly arranged on the first light-emitting surface 11. Preferably, when the plurality of microlens structures 20 are arranged on the first light-emitting surface 11, they are also symmetrical about the axis of the lampshade body 10.

[0062] Further, in the embodiment, the distribution of the microlens structures 20 on the first light-emitting surface 11 is as continuous as possible, that is, as shown in FIG. 1, the arc surfaces of two adjacent microlens structures 20 are connected end to end. In this way, the light rays emitted from the first light-emitting surface 11 all enter different microlens structures 20. Figure 2

[0063] Further, in the embodiment, the ratio of the height of the lampshade body 10 along the optical axis thereof to the radius of the first light-incident surface 12 is 1:1 to 3:1; similarly, the ratio of the height of the microlens structure 20 along the optical axis thereof to the radius of the bottom surface of the microlens structure 20 is 1:1 to 3:1. By setting the above ratio, the intensity and quadrangular uniformity of the light can be well balanced.

[0064] It is worth mentioning that in the embodiment, the density of the microlens structures 20 on the first light-emitting surface 11 can also be changed to adapt to different applications. When the density of the microlens structures 20 on the first light-emitting surface 11 decreases, more light rays will enter the same microlens structure 20 after passing through the first light-emitting surface 11, which can increase the central brightness of the light and reduce the quadrangular uniformity of the light, for brightness improvement; when the density of the microlens structures 20 on the first light-emitting surface 11 increases, the light rays will be dispersed into more different microlens structures 20 after passing through the first light-emitting surface 11, which can reduce the central brightness of the light and increase the quadrangular uniformity of the light, so that the camera adapted thereto is more suitable for soft light shooting.

[0065] Further, a Fresnel pattern can be arranged on the first light-incident surface 12 to better diffuse the light emitted by the light source 40.

[0066] The material of the lampshade body 10 is polymethyl methacrylate (PMMA), which has low production cost.

[0067] In the embodiment, the lampshade body 10 and the microlens structures 20 can be integrally formed of the same material. In other words, in the embodiment, the first light-emitting surface 11 is essentially a virtual boundary surface, which can be understood as that the light does not refract when passing through the first light-emitting surface 11.

[0068] Please continue to refer to Figure 2 ​The light source 40 of the flash lamp can be spaced apart from the flash lamp cover, and the distance between the light source 40 and the flash lamp cover can be 2.0mm-4.0mm, for example, 2.5mm, 3.0mm, 3.5mm. If the distance between the light source 40 and the flash lamp cover is too close, the flash lamp cover will be burned out, the service life of the flash lamp cover will be attenuated, and the fatigue resistance of the flash lamp cover will be reduced. If the distance between the light source 40 and the flash lamp cover is too far, the energy of the emitted light will be reduced, and the light loss will be increased.

[0069] Second embodiment

[0070] The second embodiment of the utility model is basically the same as the first embodiment, and the difference lies in that a connecting surface 13 is further formed between the first light inlet surface 12 and the first light outlet surface 11 in the embodiment. The connecting surface 13 can not be limited to an arc surface, and can be set to various shapes as needed. As long as it can meet the requirement that the area of the cross section perpendicular to the axis direction of the lamp cover body 10 continuously decreases from the direction where the first light inlet surface 12 is located to the direction away from the first light inlet surface 12, it is acceptable. As shown in the cross section along the axis of the lamp cover body 10, Figure 6 In the embodiment, the whole lamp cover body 10 is in a columnar shape, the first light inlet surface 12 is formed at the bottom of the lamp cover body 10, and the first light outlet surface 11 with an arc cross section is formed at the top of the lamp cover body 10. The connecting surface 13 can extend straight from the direction where the first light inlet surface 12 is located to the direction away from the first light inlet surface 12. That is, the lamp cover body 10 can be in a frustum shape in the region where the connecting surface 13 is located.

[0071] It is worth mentioning that the difference between the first light outlet surface 11 and the connecting surface 13 lies in that the light emission area of the light or the light emission area of most of the light after the light enters the first light inlet surface 12 and is reflected in the lamp cover body 10 is the first light outlet surface 11. The connecting surface 13 plays a role of connecting the first light inlet surface 12 and the first light outlet surface 11 on the lamp cover body 10. The area of the first light outlet surface 11 on the flash lamp cover can be determined according to the distance between the light source 40 and the flash lamp cover, the material of the flash lamp cover, the radius of the first light inlet surface 12, and the length of the lamp cover body 10 along the optical axis direction.

[0072] Third embodiment

[0073] Please continue to refer to Figure 6The third embodiment of the present application is basically the same as the first embodiment and the second embodiment, and the difference is that in the embodiment, the flash lamp cover further comprises a base portion 30, the base portion 30 is formed with a second light inlet surface 31 which is inwardly recessed, and a third light outlet surface 32 which is outwardly protruded and located on the side opposite to the second light inlet surface 31. The first light outlet surface 11 of the lamp cover body 10 corresponds in shape to the second light inlet surface 31, so that the lamp cover body 10 extends into the recess, and the second light inlet surface 31 is arranged in abutment with the first light outlet surface 11. The third light outlet surface 32 is also arc-shaped in cross section, and the micro-lens structure 20 is formed on the third light outlet surface 32. The micro-lens structure 20 and the base portion 30 are integrally formed of the same material. The refractive index of light at the first light inlet surface 12 is not equal to the refractive index of light at the second light inlet surface 31. Through the arrangement of the above structure, the function of the flash lamp cover with gradually changing refractive index can be realized, and the intensity and the quadrangular uniformity of light can be better balanced according to the needs.

[0074] Further, in the embodiment, the refractive index of light at the first light inlet surface 12 is greater than the refractive index of light at the second light inlet surface 31, and the refractive index of light at the second light inlet surface 31 is greater than the refractive index of air.

[0075] Further, the material of the lamp cover body 10 can be polymethyl methacrylate, and the materials of the base portion 30 and the micro-lens structure 20 can be polycarbonate (PC).

[0076] It should be noted that in the embodiment, the third light outlet surface 32 can be understood as a virtual boundary surface, and light does not refract between the base portion 30 and the micro-lens structure 20.

[0077] The utility model further provides an intelligent terminal, the intelligent terminal includes the flash lamp cover in each embodiment above, and other technical features about the intelligent terminal, please see prior art, here will not repeat.

[0078] It can be understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided by the embodiments of the present application. The technical solutions provided by the embodiments of the present application are also applicable to other scenarios. For example, those skilled in the art can know that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0079] The above sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0080] The steps in the method of the embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs.

[0081] The units in the device of the embodiments of the present application can be combined, divided, and deleted according to actual needs.

[0082] In the present application, for the same or similar term concept, technical solution and / or application scenario description, generally only the first time is described in detail, and the repeated description is not repeated in order to be brief, and in understanding the technical solutions of the present application, the same or similar term concept, technical solution and / or application scenario description which is not described in detail can be referred to the previous related description.

[0083] In the present application, the description of each embodiment has its own emphasis, and the part not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0084] The technical features of the technical solutions of the present application can be combined arbitrarily, in order to make the description simple, the above-mentioned technical features of each embodiment are not described all possible combinations, however, as long as the combination of these technical features does not exist contradictory, should be considered as the range recorded in the present application.

[0085] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is the better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of software product, and the computer software product is stored in the above-mentioned storage medium (such as ROM / RAM, magnetic disc, optical disc), including a plurality of instructions for making a terminal device (which can be a mobile phone, computer, server, controlled terminal, or network device, etc.) execute the method of each embodiment of the present application.

[0086] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line) or wireless (for example, infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be magnetic media (for example, floppy disk, storage disk, magnetic tape), optical media (for example, DVD), or semiconductor media (for example, Solid State Disk (SSD)) and the like.

[0087] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A flash lamp envelope characterized by, The flash lamp cover comprises: a lamp cover body, a first light exit surface for light source is formed on the lamp cover body, the cross section of the first light exit surface is arc surface; a plurality of microlens structures, the plurality of microlens structures are arranged on the first light exit surface, a second light exit surface for light source is formed on each of the microlens structures, the cross section of the second light exit surface is arc surface.

2. The flash lamp envelope of claim 1, wherein The lamp cover body comprises a first light entrance surface for light source, from the direction of the first light entrance surface to the direction away from the first light entrance surface, the area of the cross section perpendicular to the axis direction of the lamp cover body is continuously reduced.

3. The flash lamp envelope of claim 2, wherein, The lamp cover body is hemispherical.

4. The flash lamp envelope of claim 2, wherein, The lamp cover body is columnar, the first light entrance surface is formed at the bottom of the lamp cover body, the first light exit surface with arc cross section is formed at the top of the lamp cover body, and a connecting surface is formed between the first light entrance surface and the first light exit surface.

5. The flash lamp envelope of claim 4, wherein, From the direction of the first light entrance surface to the direction away from the first light entrance surface, the connecting surface extends straight.

6. The flash lamp envelope of claim 2, wherein, The lamp cover body is axisymmetric structure, the arc surface is symmetric about the axis of the lamp cover body.

7. The flash lamp envelope of claim 6, wherein, The microlens structures are uniformly arranged on the first light exit surface, and the plurality of microlens structures are symmetric about the axis of the lamp cover body.

8. The flash lamp envelope of claim 1, wherein, The flash lamp cover comprises a base body, a second light entrance surface recessed inward is formed on the base body, and a third light exit surface protruding outward is formed on the side opposite to the second light entrance surface, the first light exit surface of the lamp cover body corresponds to the shape of the second light entrance surface, the lamp cover body extends into the recess, and the second light entrance surface and the first light exit surface are arranged in close contact, the cross section of the third light exit surface is also arc surface, the microlens structures are formed on the third light exit surface, and the refractive index of the base body is different from the refractive index of the lamp cover body.

9. The flash lamp envelope of claim 8, wherein, The refractive index of the lamp cover body is greater than the refractive index of the base body.

10. A smart terminal, characterized by The flash lamp cover comprises the flash lamp cover according to any one of claims 1 to 9. The flash lamp cover comprises the flash lamp cover according to any one of claims 1 to 9.

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