• - Oppo unveils four new achievements in the field of mobile cameras

    Oppo unveils four new achievements in the field of mobile cameras
    6 Days, 8 Hours ago

    Tags:  Camera  -  Oppo

    Oppo is one of the brands that tries to keep the camera technology of its products at a high level. In the latest move, the Chinese company on Thursday, August 19, 2021 (August 28, 1400) during an event held in China, described its four new achievements in the field of smartphone cameras. Simon Liu, Director of Imaging at Oppo, unveiled the achievements at the event, which include a new RGBW sensor, continuous optical zoom module, 5-axis optical image stabilization and a new generation of in-screen selfie camera. Apparently, the company will use some of these new technologies in the construction of its devices by the end of this year. Oppo unveils four new achievements in the field of mobile cameras New RGBW sensor

    An RGB color filter (red, green and blue) is used in the structure of conventional camera sensors. But some companies, such as Oppo and Huawei, already have experience with a newer sensor called RGBW. The letter W at the end of the name of this sensor stands for white meaning "white" and this is because in the structure of this type of sensors, to improve the performance of the sensor in low light environments, white sub-pixels have been added to the previous composition. Of course, this is different from the structure of monochrome cameras, because here the output is color images. In other words, in addition to the secondary or auxiliary camera, RGBW sensors can also be used as the main camera in smartphones. Oppo unveils four new achievements in the field of mobile cameras

    In a recent event, Oppo Unveiled a new RGBW sensor. According to Oppo, compared to the previous RGB sensors, the power of this new sensor to absorb light has increased up to 60% and the noise level has been reduced by 35%. Of course, Oppo did not specify exactly which category of RGB sensors it made this comparison with. Overall, according to Oppo, the color performance of this new sensor is improved and it uses better technology to isolate the cross-talk pixels. Also, thanks to improved skin, texture and contrast, better portraits of the sensor can be expected on paper.

    According to the manufacturer, in the last quarter of this year, devices based on these sensors will enter the market by Oppo. vivo - another subsidiary of BBK - also announced last year that it was working on a new RGBW sensor that was due to go commercial this year. It is also said that Samsung intends to use a 50-megapixel RGBW sensor in the construction of one of the Galaxy S22 series phones. Continuous optical zoom module

    There is no doubt that telephoto cameras are important in the industry, but they also have a major drawback; These cameras are limited to a fixed scale, or so-called "zoom factor", and manufacturers have to resort to other methods (including the use of software) to compensate for this shortcoming, which will ultimately lead to a decline in image quality. For example, companies like Sony have introduced telephoto cameras that have the ability to switch between two zoom factors, but any zoom between them requires software again. But apparently Oppo has found a solution to this problem. Oppo unveils four new achievements in the field of mobile cameras

    Moving lenses The new Oppo module can achieve optical zoom at a focal length of between 85 and 200 mm (something between 3.3 and about 7x). According to Oppo, problems such as jumping, white imbalance and color bias that existed in previous models have been fixed in the company's new module. According to Oppo, this module includes a TMR (tunnel magnetic resistance) sensor that allows accurate and vibration-free movement of the lenses. The lenses appear to be a combination of glass and plastic with two very thin glass lenses. A steering arm is also responsible for moving the lenses. Oppo unveils four new achievements in the field of mobile cameras

    Oppo has not specified that When will this module reach mass production stage? Of course, implementing this module in a smartphone is not an easy task, because such modules are relatively large and using them in a smartphone will be challenging. Oppo may have to combine it with a small sensor with a relatively weak aperture. Of course, these are just guesses and we have to wait and see what the manufacturer does.

    5-axis optical image stabilization

    According to some experts, among the 4 achievements that Oppo introduced at the event, the new 5-axis image stabilizer is more attractive. In this system, in addition to the image stabilization mechanism through the movement of the sensor or sensor shift (used in iPhones 12 series), Oppo also uses the lens movement or lens shift. When the vibration and motion are minimal, the system neutralizes this vibration by moving the lens in the horizontal (x-axis) and vertical (y-axis) directions. But if the vibration is more intense, the sensor movement mechanism is also activated and in addition to moving the sensor in horizontal and vertical directions, it also moves it in a circular fashion. Oppo unveils four new achievements in the field of mobile cameras

    Maximum seismic angle in this The system is declared 3 degrees. According to Oppo, compared to conventional systems, the seismic capacity of this system has increased by 65% and its seismic accuracy has been increased 3.5 times. As far as the manufacturer is concerned, the vibration rate of this system is close to that of professional SLR cameras. Most likely, the first devices equipped with 5-axis vibration shock will enter the market in the first quarter of 2022. We still do not know how this anti-shake system differs from micro-gimbal anti-vibration systems (on some Vivo phones), but overall it can be said that if the Oppo vibration system is in practice what the manufacturer claims, it will be higher than many current flagships.

    New generation of selfie cameras under the screen

    One of the main trends in the smartphone world these days is to place the front camera under the screen. Chinese company ZTE was the first company to launch the first smartphone equipped with such a camera, the ZTE Axon 20, last year. Later, Xiaomi and Samsung also started making such smartphones. But what about Oppo, the first company to introduce the technology in 2019? About two weeks before the recent event, the Chinese company unveiled its third-generation technology to install a camera under the display layer.

    Oppo claims that in smartphones equipped with this type of camera, the density of the area that covers the camera is 400ppi and will not be different from the density of other parts of the display. In addition, transparent materials are used in the display wiring of phones that use this camera. According to Oppo, these changes can reduce the "haze effect" that usually occurs on the camera cover of the screen, making it difficult to distinguish the area on the camera from other parts of the screen. It is also claimed that in this technology, control over the color and brightness of the screen will be more.

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