Oppo unveiled four new achievements in the field of mobile cameras


Oppo unveiled four new achievements in the field of mobile cameras

Oppo unveiled four new achievements in the field of mobile cameras

News unit EMGblog.com : Company Oppo is one of the brands that tries to keep the camera technology of its products at a high level. In the latest move, this Chinese company on Thursday, August 19, 2021 (28 August 1400) during an event held in China, to explaining its 4 new achievements in the field of smartphone cameras. At the event, Simon Liu, director of imaging at Oppo, introduced the achievements, which include a new RGBW sensor, continuous optical zoom module, 5-axis optical image stabilization and a new generation of in-display selfie camera. Apparently, this company will use some of these new technologies in the construction of its devices by the end of this year.

New RGBW sensor

In the structure of conventional camera sensors, an RGB (red, green and blue) color filter is used. But some companies like Oppo and Huawei, before this, they have the experience of using a newer type of sensor called RGBW. The letter W at the end of this sensor’s name stands for “white” and this is because in the structure of this type of sensor, white sub-pixels have also been added to the previous combination to improve the performance of the sensor in low-light environments. Of course, this is different from the structure of monochrome cameras, because here the output is color images. In other words, RGBW sensors can be used as the main camera in smartphones in addition to the second or auxiliary camera.

At a recent event, Oppo unveiled a new RGBW sensor. According to Oppo’s claim, compared to previous RGB sensors, the ability of this new sensor to absorb light has increased by 60% and its noise level has decreased by 35%. Of course, Oppo has not specified with which category of RGB sensors exactly this comparison has been made. Overall, according to Oppo, the color performance of this new sensor is improved and it uses better technology to isolate pixel cross-talk. Also, on paper you can expect better portraits from this sensor thanks to improvements in skin, texture and contrast.

According to the manufacturer, in the last quarter of this year, devices based on these sensors will be launched by Oppo. vivo – from other subcategories BBK – also last year from working on A new RGBW sensor announced that it was supposed to reach commercialization this year. Also, Samsung is said to be planning to use a 50MP RGBW sensor in one of its Galaxy S22 series phones. use.

Continuous Optical Zoom Module

There is no doubt that telephoto cameras are of great importance in the industry, but they also have a major weakness; These cameras are limited to a fixed scale or in the term “zoom factor” and the manufacturing companies have to resort to other methods (including the use of software) to compensate for this deficiency, which will ultimately result in a decrease in image quality. For example, companies such as Sony have released telephoto cameras that have the ability to switch between two zoom factors. , but any zoom in the distance between the two, again requires software. But apparently Oppo has found a solution to this problem.

Moving lenses of the new module Oppo, can achieve optical zoom at a focal length between 85mm and 200mm (something between 3.3x and about 7x). According to Oppo, problems such as jumping, incorrect white balance and color bias that existed in previous models have been resolved in the new module of this company. According to Oppo, this module houses a TMR (tunneled magnetoresistance) sensor that enables precise and vibration-free lens movement. Apparently, the lenses are a combination of glass and plastic with two non-spherical and very thin glass lenses. A guide arm is also responsible for moving the lenses.

Oppo has not specified when the module will reach mass production. 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 associated with challenges. Maybe Oppo will have to combine it with a small sensor with a relatively weak aperture. Of course, these are just speculations and we have to wait and see what the manufacturer will do.

Optical 5-axis stabilizer

According to some experts, the new 5-axis stabilizer is more attractive among the 4 achievements that Oppo introduced at this event. In this system, in addition to the image stabilization mechanism through sensor shift (used in iPhone 12 series), Oppo has also used lens shift. When shake and movement are minimal, the system neutralizes this shake 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 way.

The maximum shaking angle in this system is ±3 degrees. According to Oppo’s claim, compared to conventional systems, the ability to shake this system has increased by 65% ​​and its accuracy has increased by 3.5 times. As far as the manufacturing company, the level of shaking of this system is close to that of professional SLR cameras. Most likely, the first devices equipped with 5-axis vibration will enter the market in the first quarter of 2022. We still don’t know how this shaker differs from the micro-gimbal shaker systems (in some Vivo phones), but overall, if Oppo’s shaker system actually lives up to what the manufacturer claims, it will be superior to many current flagships.

The new generation of selfie cameras under the display

These days, one of the main trends in the smartphone world is placing the front camera under the display layer. The Chinese company ZTE was the first company that managed to launch the first smartphone equipped with such a camera last year. Enter the market under the name ZTE Axon 20. After that, Xiaomi and Samsung also started making such smartphones. But what is the status of Oppo, which was the first company to introduce this technology in 2019? About two weeks before the recent event, this Chinese company unveiled the third generation of its technology to use the 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 wiring of the display of the phones that use this camera. According to Oppo, these changes can reduce the “dusty effect” or haze effect that usually occurs in the part covering the camera in the display, and in this way, it is difficult to distinguish the area on the camera from other parts of the display. Also, it is claimed that in this technology, there will be more control over the color acceptability and brightness of the display.

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