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China Shenzhen City Haozhou Technology Co., Ltd.
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Shenzhen City Haozhou Technology Co., Ltd.
Shenzhen Haozhou Technology Co., Ltd. was established in 2014. It is a high-tech company specializing in R&D, design, production, sales, CMOS camera module, USB camera module, analog camera module, endoscope camera module, sensor chip and other high-quality camera modules technology enterprise. Provide a full range of processes, SMT, modules, assembly, packaging and other one-stop services. Passed IS09001 CE ROHS quality system certification. Products are widely used in nearly a hundred fields such as face recognition, biometrics, artificial intelligence, machine vision, drones, self-service terminals, smart homes, security monitoring, and medical applications.Warmly welcome OEM and ODM. We can design according to the drawings provided by customers. All of our products have a 2-year warranty, we are willing to provide customers with products that carry corporate culture and convey brand ideas to end users, we believe that success is built on a solid foundation and commitment to delivery. haozhou provides high quality camera modules with professional OEM design and manufacturing services to customers worldwide. We are carrying OmniVision, Sony, Samsung, Hynix, GalaxyCore... The main application areas: AI VR mobile phone, digital still camera, laptop, DV, PDA/handheld, toy, PC camera, security camera, automotive camera, tablet pc, visual doorbell, medical system, smart home, industrial image, recognition system, fingerprint identification system ...
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Palmprint recognition of camera module 2026-07-28 /* Unique root class for style encapsulation */ .gtr-container-a1b2c3d4e5f6 { /* Color Palette based on #0000FF */ --primary-blue: #0000FF; --light-blue: #E0E0FF; /* For subtle backgrounds or accents */ --dark-blue: #0000CC; /* For hover states or stronger emphasis */ --text-color: #333333; --secondary-text-color: #666666; --border-color: #DDDDDD; --white: #FFFFFF; font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: var(--text-color); line-height: 1.6; padding: 20px; max-width: 100%; /* Mobile first */ box-sizing: border-box; /* No background-color for the component */ /* No border for the root container */ } .gtr-container-a1b2c3d4e5f6__title { font-size: 18px; font-weight: bold; color: var(--primary-blue); margin-bottom: 20px; text-align: left; } .gtr-container-a1b2c3d4e5f6__paragraph { font-size: 14px; margin-bottom: 15px; text-align: left !important; /* Enforce left alignment */ line-height: 1.6; color: var(--text-color); word-break: normal; /* Ensure words are not broken arbitrarily */ overflow-wrap: break-word; /* Allow long words to break if necessary, but prefer normal wrapping */ } .gtr-container-a1b2c3d4e5f6__paragraph:last-child { margin-bottom: 0; } /* Responsive design for PC screens */ @media (min-width: 768px) { .gtr-container-a1b2c3d4e5f6 { padding: 30px; max-width: 960px; /* Optimal width for readability on larger screens */ margin-left: auto; margin-right: auto; } .gtr-container-a1b2c3d4e5f6__title { font-size: 22px; /* Slightly larger title on PC */ margin-bottom: 25px; } .gtr-container-a1b2c3d4e5f6__paragraph { font-size: 15px; /* Slightly larger body text on PC for better readability */ margin-bottom: 20px; } } Camera Module Palmprint Recognition The camera module is an important module in machine vision imaging. It consists of sensors, lenses and image processing chips. Its main function is to capture light and images, convert them into digital signals, and perform image processing, ultimately realizing functions such as photography, video recording, and image recognition. Secondly, camera modules play an important role in face recognition and security authentication. Through deep learning and artificial intelligence algorithms, the camera module can accurately identify and verify facial information, providing a safer and more convenient unlocking method. Without entering a password or using a fingerprint, we can quickly unlock the phone and protect personal privacy by simply pointing our face at the camera. Palmprint recognition payment is a payment method based on biometric recognition, which uses a camera module to identify and verify the user's palmprint information. Palmprint refers to the texture and lines on the inside of a person's palm. Each person's palmprint pattern is unique and cannot be forged. Palmprint payment uses a camera module to scan the user's palm, convert the palmprint information into digital data, and compare it with a pre-registered palmprint template to verify the user's identity. The relationship between the camera module and palmprint recognition is that the camera module provides high-pixel sensors and image processing technology, allowing the mobile phone to capture and identify the user's palmprint information with high accuracy. The camera module converts palmprint information into digital data by scanning and image processing the palm, and transmits it to the payment system for verification. The security and accuracy of palmprint payment rely on the high performance and accuracy of the camera module. By combining the camera module with palmprint payment, users can achieve a safer and more convenient payment experience. Users only need to point their palms to the phone's camera, and the camera module will quickly scan and identify the user's palmprint information, and then compare it with a pre-registered palmprint template to verify the user's identity. This payment method does not require passwords or fingerprints, is simple and fast, and at the same time has a high degree of security. In short, the camera module and palmprint payment are closely integrated. Through the high-pixel sensor and image processing technology of the camera module, high-precision identification and verification of the user's palmprint information is achieved. The camera module provides powerful technical support for palmprint payment, allowing users to enjoy a safer and more convenient payment experience.
Detailed explanation of basic camera hardware 2026-07-28 .gtr-container-k9l0m1 { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333333; line-height: 1.6; padding: 15px; box-sizing: border-box; overflow-wrap: break-word; } .gtr-container-k9l0m1 p { font-size: 14px; text-align: left; margin-bottom: 10px; margin-top: 0; } .gtr-container-k9l0m1 .gtr-section-title { font-size: 18px; font-weight: bold; color: #0000FF; margin-bottom: 20px; text-align: left; } .gtr-container-k9l0m1 .gtr-subsection-title { font-size: 16px; font-weight: bold; color: #0000FF; margin-top: 25px; margin-bottom: 15px; text-align: left; } .gtr-container-k9l0m1 .gtr-list-item-heading { font-weight: bold; display: inline; color: #333333; } .gtr-container-k9l0m1 ul, .gtr-container-k9l0m1 ol { margin: 0; padding: 0; list-style: none !important; } .gtr-container-k9l0m1 ul li, .gtr-container-k9l0m1 ol li { position: relative; padding-left: 25px; margin-bottom: 8px; line-height: 1.6; font-size: 14px; text-align: left; display: list-item; } .gtr-container-k9l0m1 ul.gtr-list-alpha li::before { content: attr(data-marker) "." !important; color: #0000FF; font-weight: bold; position: absolute !important; left: 0 !important; width: 20px !important; text-align: right !important; } .gtr-container-k9l0m1 ol.gtr-list-numbered { counter-reset: list-item; } .gtr-container-k9l0m1 ol.gtr-list-numbered li::before { content: counter(list-item) "." !important; color: #0000FF; font-weight: bold; position: absolute !important; left: 0 !important; width: 20px !important; text-align: right !important; } .gtr-container-k9l0m1 ul.gtr-list-bullet li::before { content: "•" !important; color: #0000FF; position: absolute !important; left: 0 !important; font-size: 1.2em !important; line-height: 1 !important; width: 20px !important; text-align: center !important; } @media (min-width: 768px) { .gtr-container-k9l0m1 { padding: 25px 50px; max-width: 960px; margin: 0 auto; } } Detailed explanation of basic camera hardware 1.1 Lens main indicators Eliminate as many Flares as possible Image quality and clarity CRA (Chief Ray Angle) must match and reduce shading (Lens cra < Sensor CRA, the difference is best within 2 degrees) Make the aperture as large as possible 1.2 Lens main parameters Focal length: The length of the focal length of the lens determines the size of the image taken, the size of the field of view, the size of the depth of field and the perspective strength of the picture. Generally speaking, for a single-lens lens, it is the distance from the center of the lens to the focus, while a camera lens is composed of multiple lenses, which is much more complicated. The focal length here refers to the distance from the center point of the lens to the clear image formed on the photosensitive device (CCD). Field of view: We often use the horizontal field of view to reflect the shooting range of the picture. The larger the focal length f, the smaller the field of view, and the smaller the range of the picture formed on the photosensitive element; conversely, the smaller the focal length f, the larger the field of view, and the larger the range of the picture formed on the photosensitive element. F value (aperture ratio): F value refers to the brightness of the lens (that is, the amount of light transmitted by the lens). F=lens focal length/aperture diameter. For the same F value, the diameter of a long focal length lens is larger than that of a short focal length lens. Aperture: The aperture is an adjustable optical-mechanical aperture located inside the lens, which can be used to control the amount of light passing through the lens. Variable aperture (Iris diaphragm). A mechanical device inside the lens used to control the size of the aperture. Or refers to a device used to open or close the lens aperture to adjust the f-stop of the lens. Depth of field: When an object is in focus, all objects from a certain distance in front of the object to a certain distance behind it are also in focus. The distance from front to back where the focus is quite clear is called depth of field. 2.1 VCM (Voice Coil Motor) voice coil motor The full name is Voice Coil Montor, a voice coil motor in electronics, which is a type of motor. Because the principle is similar to that of a speaker, it is called a voice coil motor, which has the characteristics of high frequency response and high precision. Its main principle is to control the stretching position of the spring leaf by changing the DC current of the coil in the motor within a permanent magnetic field, thereby driving up and down movement. Mobile phone cameras widely use VCM to achieve autofocus function. VCM can adjust the position of the lens to present clear images. 2.2 VCM performance indicators The performance of VCM mainly depends on the ratio of current and travel distance. Starting from the starting current, the current rise must be proportional to the driving distance. The smaller the required rising current, the higher the accuracy. It also depends on the maximum power consumption, maximum power, and size. 2.3 VCM classification The structure can be roughly divided into three categories: shrapnel structure; ball structure; friction structure. Functionally, it can be roughly divided into five categories: Open loop motor; Close loop motor; Alternate mid-mounted motor; OIS optical anti-shake motor (divided into translation type, tilt-shift type, memory metal type, etc.); OIS+Close loop six-axis motor. 2.4 AF principle After entering the auto-focus mode, the Driver moves from 0 to the maximum value, causing the lens to move from the original position to the maximum displacement. At this time, the sensor imaging surface automatically captures pictures and saves them to the DSP. The DSP uses these pictures to calculate the MTF (Modulation Transfer Function) value of each picture to find the maximum value in this MTF curve. Through the algorithm, the current size corresponding to this point is obtained, and the Driver is again instructed to provide this current to the voice coil, so that the lens is stabilized on this imaging surface, allowing automatic zooming. 2.5 Zoom and focus Optical zoom uses zoom motor (ZOOM) By moving the lens inside the lens, the position of the focus is changed, the focal length of the lens is changed, and the angle of view of the lens is changed, thereby amplifying and reducing the effect. A focus motor (AF) is used to achieve autofocus. By moving the position of the entire lens (rather than the lens within the lens) at a micro distance, you can control the focal length of the lens to achieve a clear image. A commonly used method in mobile phones. Optical focus and optical zoom are different concepts: Optical zoom changes the position of the focus by moving the relative position of the lens inside the lens, changes the focal length of the lens, and changes the angle of view of the lens, thereby enlarging and reducing the image; optical focusing actually adjusts the position of the entire lens (rather than the position of the lens within the lens) to control the image distance, thereby making the image the clearest. 3.1 IR-CUT There are various wavelengths of light in nature. The wavelength range of light recognized by the human eye is between 320nm-760nm. The human eye cannot see light exceeding 320nm-760nm. The camera's imaging component CCD or CMOS can see most wavelengths of light. Due to the participation of various lights, there is a color deviation between the color restored by the camera and what is seen by the naked eye. For example, green plants turn gray, red pictures turn light red, black turn purple, etc. At night, due to the filtering effect of the bimodal filter, the CCD cannot make full use of all light, does not produce snowflake noise, and its low-light performance is unsatisfactory. To solve this problem, use the IR-CUT dual filter. IR-CUT dual filters refer to a set of filters built into the camera lens set. When the infrared sensing point outside the lens detects changes in light intensity, the built-in IR-CUT automatic switching filter can automatically switch according to the intensity of external light to achieve the best image effect. In other words, the dual filters can automatically switch filters during the day or night, so you can get the best imaging effect regardless of the day or night. 3.2 IR-CUT composition and principle The IR CUT dual filter switcher consists of an infrared cut-off low-pass filter (an infrared cut-off or absorption filter), a full-spectrum optical glass (a full-spectrum transmittance filter), a power mechanism (can be an electromagnetic, motor or other power source) and a housing. It is switched and positioned through a circuit control board. When there is sufficient light during the day, the circuit control board drives the switch to switch and position the infrared cut-off filter to work, and the CCD or CMOS restores the true color; when the visible light is insufficient at night, the infrared cut-off filter automatically moves away, and the full-spectrum optical glass starts to work. At this time, it can sense the infrared light of the infrared lamp, allowing the CCD or CMOS to make full use of all the light, thereby greatly improving the night vision performance of the infrared camera, and the entire picture will be clear and natural. 3.3 IR-CUT indicator The infrared cutoff degree of the filter, the light transmittance, and the light shaping effect, etc. Power drive part Control circuit 4. Filter: Generally, IR Coating or blue glass is used to filter out infrared light. 4.1 Sensor Image sensor is a semiconductor chip with millions to tens of millions of photodiodes on its surface. The photodiodes generate charges when exposed to light and convert light into electrical signals. Its function is similar to the human eye, so the performance of the sensor will directly affect the performance of the camera. 4.2 Classification Photosensitive original: CCD, CMOS (PPS and APS) Different processes: front-illuminated FSI, back-illuminated BSI, stacked 4.3 Indicators Pixel There are many photosensitive units on the sensor, which can convert light into electric charges to form an electronic image corresponding to the scene. In the sensor, each photosensitive unit corresponds to a pixel (Pixels). The more pixels, it means that it can sense more object details, so the image is clearer. The higher the pixels, the clearer the imaging effect. The product of camera resolution is the pixel value, for example: 1280*960=1228800 Target surface size The size of the photosensitive part of the image sensor, generally expressed in inches. Like TVs, this data usually refers to the diagonal length of the image sensor, such as 1/3 inch. The larger the target surface, the better the light transmission, and the smaller the target surface, the easier it is to obtain a greater depth of field. Sensitivity That is, the intensity of incident light is sensed through CCD or CMOS and related electronic circuits. The higher the sensitivity, the stronger the sensitivity of the photosensitive surface to light, and the higher the shutter speed. This is especially important when shooting sports vehicles and monitoring at night. Electronic shutter A term coined in reference to the mechanical shutter function of a camera. It controls the photosensitivity time of the image sensor. Since the photosensitivity value of the image sensor is the accumulation of signal charges, the longer the photosensitivity, the longer the signal charge accumulation time, and the greater the amplitude of the output signal current. The faster the electronic shutter, the lower the sensitivity, which is suitable for shooting under strong light. Frame rate It refers to the number of pictures recorded or played per unit time. Continuously playing a series of pictures will produce an animation effect. According to the human visual system, when the picture playback speed is greater than 15 frames/second (i.e. 15 frames), the human eye will basically not be able to see the jump of the pictures; when it reaches 24 frames/s - 30 frames/s (i.e. 24 frames to 30 frames), the flicker phenomenon will be basically undetectable. Frames per second (fps), or frame rate, represents the number of times a graphics sensor can update per second while processing a field. A high frame rate results in a smoother, more realistic visual experience. Signal-to-noise ratio It is the ratio of signal voltage to noise voltage, and the unit of signal-to-noise ratio is expressed in dB. Generally, the signal-to-noise ratio values ​​given by cameras are the values ​​when AGC (automatic gain control) is turned off, because when AGC is turned on, small signals will be increased, causing the noise level to increase accordingly. The typical value of the signal-to-noise ratio is 45-55dB. If it is 50dB, the image has a small amount of noise, but the image quality is good; if it is 60dB, the image quality is excellent and there is no noise. The larger the signal-to-noise ratio, the better the control of noise. This parameter is related to the number of noise points in the image. The higher the signal-to-noise ratio, the cleaner the picture feels, and the less point-like noise in the night vision picture. 5.DSP Digital signal processor DSP (DIGITAL SIGNAL PROCESSING) function: mainly through a series of complex mathematical algorithm operations, optimize the digital image signal parameters, and transmit the processed signal to PC and other devices through USB and other interfaces 6. The difference between DSP and ISP Glossary: ISP is the abbreviation of Image Signal Processor, which is also the image signal processor. DSP is the abbreviation of Digital Signal Processor, which is also a digital signal processor. Function explanation: ISP is generally used to process the output data of Image Sensor, such as AEC (automatic exposure control), AGC (automatic gain control), AWB (automatic white balance), color correction, Lens Shading, Gamma correction, removal of bad pixels, Auto Black Level, Auto White Level and other functions. DSP has more functions. It can do photography and echo (JPEG codec), video recording and playback (Video codec), H.264 codec, and many other aspects of processing. In short, it processes digital signals. 7. Classification and related concepts 7.1 By interface USB interface UVC, the full name of USB Video Class, is a set of standards customized by USB-IF. All USB interface cameras that follow this standard can be used almost directly under systems such as Windows and Linux, achieving similar driver-free effects. Of course, this does not mean that there need not be a driver, but as long as a camera with a USB interface complies with the UVC standard, it can be driven by a common set of drivers in Windows and Linux systems, without the need for you to install other drivers. For example, there is a set of universal drivers for UVC devices in the Linux kernel: drivers/media/usb/uvc. As long as this set of drivers is turned on, almost all UVC cameras can be used directly. MIPI interface MIPI (Mobile Industry Processor Interface) is the abbreviation of Mobile Industry Processor Interface. MIPI is an open standard for mobile application processors initiated by the MIPI Alliance. The MIPI organization is committed to standardizing interfaces within mobile communication devices to reduce compatibility issues and simplify design. For example, camera interface CSI, display interface DSI, radio frequency interface DigRF, microphone/speaker interface SLIMbus, etc. Various interfaces: DVP interface: Parallel port transmission, slow speed, low transmission bandwidth, use requires PCLK\sensor output clock, MCLK (XCLK)\external clock input, VSYNC\field synchronization, HSYNC\line synchronization, D[0:11]\parallel port data-can be 8/10/12bit data bit size. LVDS interface: LVDS (Low Voltage Differential Signaling) is low voltage differential transmission Network port: IPC web camera SDI interface: a professional video interface that uses coaxial cables and uses digital signals. There are now 18GHz bandwidth products that can meet 8K video transmission. RGB interface: Analog video interface, using coaxial cable, taking analog signals, below 720x576 standard definition signal. eDP interface: a relatively new specification, which will be widely used to replace LVDS in the notebook industry. It supports ultra-high resolution and supports 1080P or above. 7.2 Classification by lens wide angle lens standard lens telephoto lens zoom lens pinhole lens 7.3 According to imaging color camera black and white camera Infrared camera 7.4 According to photosensitive originals CCD CMOS 7.5 Whether the focal length is adjustable or not fixed focus camera zoom camera 7.6 According to sensor package CSP COB
Basic composition of camera module 2026-07-28 .gtr-container-k7p2q9 { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333; line-height: 1.6; padding: 20px; max-width: 960px; margin: 0 auto; box-sizing: border-box; } .gtr-container-k7p2q9 p { font-size: 14px; margin-bottom: 1em; text-align: left !important; } .gtr-container-k7p2q9__main-title { font-size: 18px; font-weight: bold; color: #0000FF; margin-bottom: 1.5em; text-align: left; padding-bottom: 0.5em; border-bottom: 1px solid rgba(0, 0, 255, 0.2); } .gtr-container-k7p2q9__section-title { font-size: 16px; font-weight: bold; color: #0000FF; margin-top: 2em; margin-bottom: 1em; text-align: left; position: relative; padding-left: 15px; } .gtr-container-k7p2q9__section-title::before { content: "•" !important; color: #0000FF; font-size: 1.2em; position: absolute !important; left: 0 !important; top: 0; } .gtr-container-k7p2q9 ul { list-style: none !important; padding-left: 20px; margin-bottom: 1em; } .gtr-container-k7p2q9 ul li { font-size: 14px; margin-bottom: 0.5em; position: relative; padding-left: 15px; text-align: left; list-style: none !important; } .gtr-container-k7p2q9 ul li::before { content: "•" !important; color: #0000FF; font-size: 1.2em; position: absolute !important; left: 0 !important; top: 0; } .gtr-container-k7p2q9 strong { color: #0000FF; } @media (min-width: 768px) { .gtr-container-k7p2q9 { padding: 30px; } .gtr-container-k7p2q9__main-title { font-size: 22px; } .gtr-container-k7p2q9__section-title { font-size: 18px; } } Basic composition of camera module Lens, lens base, infrared filter (IR), photosensitive chip (sensor), DSP/ISP (signal processor), PCB/FPC (printed circuit board/flexible circuit board), these are the basic components that constitute a camera module. There are many internal subdivisions. Now let’s briefly introduce these basic components: Lens: Lens is a device that can receive light signals and focus them on the photosensitive device CMOS/CCD. Lens determines the lighting rate of the sensor, and its overall effect is compared to a convex lens. Generally, the lens structure of a camera is composed of several lenses, which are divided into plastic lenses (PLASTIC) and glass lenses (GLASS). The lens structures usually used by CAMERA are: 1P, 2P, 1G1P, 1G3P, 2G2P, 4G, 8P, etc. The more lenses, the higher the cost; glass lenses are more expensive than plastic lenses, but the imaging effect of glass lenses is better than that of plastic lenses. Lens base: It fixes the lens and is the rotating center for adjusting the focus of the lens. It rotates the lens to achieve the clearest picture within the focal length. Infrared filter (IR): IR cut filter is an infrared cut filter, which is placed between the Lens and Sensor. Because the human eye and the sensor respond differently to each wavelength, the human eye cannot see infrared light but the sensor can sense it, so an IR cut filter is required to block infrared light. There are various wavelengths of light in nature. The wavelength range of light recognized by the human eye is between 320nm-760nm. The human eye cannot see light exceeding 320nm-760nm. The camera's imaging component CCD or CMOS can see most wavelengths of light. Due to the participation of various lights, there is a color deviation between the color restored by the camera and what is seen by the naked eye. For example, green plants turn gray, red pictures turn light red, black turn purple, etc. At night, due to the filtering effect of the bimodal filter, the CCD cannot make full use of all light, does not produce snowflake noise, and its low-light performance is unsatisfactory. To solve this problem, use the IR-CUT dual filter. IR-CUT dual filters refer to a set of filters built into the camera lens set. When the infrared sensing point outside the lens detects changes in light intensity, the built-in IR-CUT automatic switching filter can automatically switch according to the intensity of external light to achieve the best image effect. In other words, the dual filters can automatically switch filters during the day or night, so you can get the best imaging effect regardless of the day or night. Photosensitive chip (sensor): Image sensor is a semiconductor chip with millions to tens of millions of photodiodes on its surface. The photodiodes generate charges when exposed to light and convert light into electrical signals. Its function is similar to the human eye, so the performance of the sensor will directly affect the performance of the camera. Photosensitive elements are divided into two types: CCD and CMOS. Signal processor: DSP: Digital signal processor DSP (DIGITAL SIGNAL PROCESSING) function: mainly optimizes the digital image signal parameters through a series of complex mathematical algorithm operations, and transmits the processed signals to PC and other devices through USB and other interfaces; ISP: ISP is generally used to process the output data of the Image Sensor, such as AEC (automatic exposure control), AGC (automatic gain control), AWB (automatic white balance), color correction, Lens Shading, Gamma correction, removal of bad pixels, Auto Black Level, Auto White Level and other functions. PCB: PCB (printed circuit board), also known as printed circuit board, is one of the important components of the electronics industry. The printed circuit board is composed of an insulating base plate, connecting wires and pads for assembling and welding electronic components. It has the dual functions of conductive lines and insulating base plates. It can replace complex wiring and realize electrical connections between components in the circuit. It not only simplifies the assembly and welding work of electronic products, reduces the wiring workload in traditional ways, and greatly reduces the labor intensity of workers; it also reduces the size of the entire machine, reduces product costs, and improves the quality and reliability of electronic equipment. Printed circuit boards have good product consistency and can adopt standardized designs, which is conducive to mechanization and automation in the production process. FPC: Flexible Printed Circuit (FPC) is a highly reliable and excellent flexible printed circuit board made of polyimide or polyester film as the base material. It has the characteristics of high wiring density, light weight, thin thickness and good bendability.
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