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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What is Camera Module? 2025-07-01 Camera Module, also known as Camera Compact Module, abbreviated as CCM, contains four major components: lens, sensor, FPC, and DSP. The important parts to decide a camera is good or bad are: lens, DSP, and sensor.The key technologies of CCM are: optical design technology, aspherical mirror production technology, optical coating technology. Camera Module Components 1 ) Lens Lens is a device that can receive light signals and converge light signals in the sensor CMOS/CCD. lens determines the light harvesting rate of the sensor, its overall effect relative to a convex lens. Optical lens structure is: lens barrel (Barrel), lens group (P / G), lens protection layer (gasket), filter, lens holder (Holder). Camera module lens is divided into plastic lens (PLASTIC) and glass lens (GLASS), the general camera lens consists of several lenses, usually the lens for camera module is: 1P, 2P, 3P, 1G1P, 1G2P, 2G2P, 4G, etc.. The more the number of lenses, the higher the cost; in general, the glass lens will have better imaging effect compared with the plastic lens. However, the glass lens will be more expensive than the plastic lens. 2) IR CUT (infrared Cut Filter) There are various wavelengths of light in nature, the human eye to identify the wavelength range of light between 320nm-760nm, more than 320nm-760nm light the human eye can not see; and the camera imaging components CCD or CMOS can see most of the wavelengths of light. Due to the involvement of a variety of light, the color restored by the camera and the naked eye in the color deviation. Such as green plants become gray, red pictures become light red, black becomes purple, etc.. At night due to the filtering effect of the bimodal filter, so that the CCD can not take full advantage of all the light, not to produce snow noise phenomenon and its low-light performance is difficult to be satisfactory. To solve this problem, the use of IR-CUT double filter. IR-CUT dual filter is a set of filters built into the camera lens set, when the lens outside the infrared sensor point to detect changes in the intensity of light, the built-in IR-CUT automatic switching filter can be based on the strength of external light and then automatically switch, so that the image to achieve the best results. In other words, the dual filters can automatically switch filters in daytime or nighttime, so that the best imaging effect can be obtained whether in daytime or nighttime. 3) VCM (Voice Coil Motor) Camera Moodule - VCM Full name Voice Coil Montor, electronics inside the voice coil motor, is a kind of motor. Because the principle is similar to the speaker, so called voice coil motor, with high frequency response, high precision characteristics. Its main principle is in a permanent magnetic field, by changing the size of the DC current in the motor coil to control the stretching position of the spring, so as to drive the up and down movement. Camera compact module widely use VCM to realize the autofocus function, and the position of the lens can be adjusted by VCM to present clear images. 4) Image Sensor Image sensor is a semiconductor chip, its surface has millions to tens of millions of photodiodes, photodiodes by the light will generate an electric charge, the light will be converted into electrical signals. Its function is similar to the human eye, so the performance of sensor will directly affect the performance of camera. 5) DSP Digital Signal Processor (DSP) is a microprocessor especially suitable for digital signal processing operations, and its main application is the real-time and rapid implementation of various digital signal processing algorithms. Function: The main purpose is to optimize the digital image signal parameters through a series of complex mathematical algorithms, and to transmit the processed signal to cell phones, computers and other devices via USB and other interfaces.

The core chip of the camera – CMOS image sensor 2025-07-01 A CMOS (complementary metal oxide semiconductor) image sensor’s operating concept was envisioned in the second half of the 1960s, but the device was not commercialized until microfabrication technology evolved sufficiently in the 1990s. CCD (charge coupled device) or CMOS (complementary metal oxide semiconductor) image sensors are often used in today’s digital cameras and mobile phones. CCD and CMOS are both semiconductor devices that function as “electronic eyes.” They both employ photodiodes, but their production processes and signal reading methods differ. Although CCD technology was popular at initially owing to higher sensitivity and picture quality, CMOS sensors began to outnumber CCD sensors in shipping volume beginning in 2004. Data rate is faster than CCD. An array of capacitors in a charge-coupled device (CCD) image sensor carries an electric charge according to the light intensity of a pixel. Each capacitor’s contents are transferred to its neighbor via a control circuit, and the last capacitor in the array empties its charge into a charge amplifier. CCD sensors are known for their bucket-brigade data transmission method. A complementary metal oxide semiconductor (CMOS) image sensor on the other hand, contains a photodiode and a CMOS transistor switch for each pixel, which allows the pixel signals to be amplified separately. The pixel signals may be accessed directly and sequentially, considerably faster than a CCD sensor, by manipulating the matrix of switches. Another advantage of having an amplifier for each pixel is that it decreases the noise that arises while reading the electrical signals converted from collected light. CMOS image sensors are less expensive to manufacture than CCD image sensors because existing semiconductor manufacturing equipment may be reused for their production.Unlike CCD sensors, which utilize high-voltage analog circuits, CMOS sensors use a smaller digital circuitry that consumes less power and is, in theory, devoid of smear (vertical white streak in a bright-light image) and blooming (corruption of images such as white spots). Because logic circuitry can be incorporated onto the chip during the manufacturing process, CMOS sensors with an on-chip image processing circuit are being developed for applications such as image recognition and artificial vision, with some devices currently in use.

Comparing OV6211 with Alternative Dual Lens IR Modules – What to Look For 2025-09-23 If you are evaluating dual lens IR camera modules for eye tracking or gesture recognition use, comparing options is essential. This blog helps you weigh features of the OV6211 module against alternatives, and identifies what criteria to prioritize. Key Comparison Criteria Frame Rate vs Resolution: High frame rate supports rapid motion capture, resolution supports clarity. Many modules trade one for the other. OV6211 offers 400 x 400 at 120fps, which is good for tracking; alternatives may offer higher resolution but lower fps or vice versa. Sensor Type: Global shutter vs rolling shutter; pixel size; sensitivity under IR. Global shutter helps reduce motion artifacts. IR Illumination: LED count, wavelength (850nm), power consumption. Quality of illumination affects performance under dark / variable lighting. Dual Lens Capability: Depth perception, stereo vision, gesture detection. Some modules are single lens; dual lens offers more capability but more complexity. Size, Mounting, Interface: Compact modules, reliable connectors, plug and play, USB or other interface. Smaller modules are easier to embed in wearables or headsets. Power Efficiency: Support for low power modes, LED control, idle modes. For battery powered or wearable devices, efficiency is very important. Software Support and Drivers: UVC support, driver free operation, software SDK or libraries. Better software ecosystem accelerates development. Certifications / Supply Chain: CE, RoHS, FCC certifications; manufacturing quality and supply capacity. Important for product reliability and scaling. Where OV6211 Excels Its combination of high fps, dual lens, IR LED illumination and global shutter give it strength in motion tracking, eye tracking, gesture detection. Compact module size aids embedding in tight spaces. USB UVC plug and play operation simplifies development. Certifications and production capacity enable better scaling. Where Other Modules Might Be Better If you need ultra high resolution for detailed imaging (e.g. face recognition or photographic capture), there might be modules with higher megapixel but lower frame rate. For very large distance detection or variable distances, autofocus or larger lens systems may help, though at cost, size, and power. Some modules may provide more IR LED power or more complex illumination control. Trade-Offs to Consider Higher resolution tends to increase data bandwidth, processing load, power consumption. More complex optics or dual lens may increase cost, size, and calibration complexity. Infrared illumination needs to be managed to avoid glare or safety issues. Decision Scenarios For VR or glasses where eye tracking and gesture is primary, OV6211 is strong choice. For fixed installations or surveillance where resolution and face details are more important, alternative modules might be preferable. For battery powered or mobile devices, efficiency features may matter more in choice. Conclusion The OV6211 dual lens IR module offers a compelling balance: high frame rate, IR illumination, dual lens and global shutter in compact form. When comparing alternatives, developers should prioritize what their application actually needs—motion speed vs resolution, distance vs form factor, power vs performance. By understanding the trade-offs, one can choose module that delivers best value and performance.

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