A Belgo-Dutch startup is developing an option for color filters that will catch the sensor to shine all the light on them. It has the ability to pursue one of the boundaries of the existing Bayer sensor, which allows to prevent improvement in tanwala quality and noise and potentially high resolution capture.
Its technique uses nano-scal wavegides to divide the lights coming on the basis of its color, which means that the sensor receives all the light projected on it, rather than the filter that absorbs some of the lights.
A spin-off IO from IMEC (a Belgium Research Organization) has obtained € 15M in seed funding to develop technology.
Its system does not block or absorb any light, instead redenses it in a neighboring pixel, depending on its color.
Technology uses a wavegide that changes the upcoming light at a very fine point – whose geometry is on the scale of wavelength of light – dividing the light by wavelength. From here it is separately down through each other, in a pair of photodyodes below through rectangular wavegide.
The company has shown that it can adjust how colors are divided by adjusting the position of accurate geometry and wavegides. It has developed pairs of wavegides that divide the light on the same wavelength that human eyes, one separates red light from cyan (green and blue), and the other separates blue lights from yellow (green and red).
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| The diagram shows the sensitivity of the human eye cone to the output spectra of different wavelengths (tops) and two wavegide designs, showing a 480Nm crossover (left) and showing a second with a crossover with crossover on 580nm (right).
Picture: IO |
This means that you still need four photodyode to capture the full color, but you can measure the intensity of light with only two, regardless of color; Promoting an important resolution and with minimal light loss.
Its work suggests that these couples of wavegide stacks, combined with traditional CMOS sensors, should be able to give comparable color accuracy with modern cameras, with the scope to improve performance to match the performance with at least the best examples.
In addition to avoiding mild damage to the color filter, the design should be able to work with smaller pixels compared to previous efforts to divide the colors by diffraction, which can be used to use small pixels.
The company’s attention, large and potentially attractive smartphone is on the market. Because its technology does not waste as lightly and can work with small pixels, it allows the construction of small sensors that provide comparative quality with existing byer, or high resolution sensors, which perform better than the same sized by sensors.
However, even in a comparison sensor used in most standalone cameras, avoiding mild damage to a color filter array will allow the tunnel quality and noisy performance to reform in tunnel quality and noise. Current sensors have a lot of quantum efficiency (generating a signal from a very high percentage of light that hits them) and a very low level reading noise, which means how much you can improve the performance of CMOs, there is a limit. However, the silicon part of the sensor is held back from the need to filter-out around a stop of ‘incorrect’ colored light before hitting each photodeode.
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The ‘Vora’ value, measuring color filtering accuracy for a large set of cameras, is calculated both for CEE standard supervisor and other age and a range of race. The IO’s technology is shown to the right using the off-the-chest CMOS sensor and a custom-made thin-film perovakite detector. Picture: IO |
Although technology is still in the phase of relatively early development, the company tells us that its technology is compatible with the current CMOS sensor manufacturing and that the construction technique for its wavegides that are already in a scale is already in scale.
It says that it has worked to ensure the pixel on the edge of the frame, which maintains a high acceptance angle for the light coming without the use of microlines, and has patented a method to customize the design to match the specific numeric aperture used in the latest cameras and smartphones.
The original idea with patents and prototypes in the next few years is of 2018. The company with the Endhovan-MC was established in 2024 and says it expects to join with potential customers in the next year or next year, with the available evaluation kit next year.
However, when asked, the company did not give a time when it felt that technology could be ready to appear in consumer products.
