Wednesday, 14 December 2016

A Camera without a Lens? Hitachi is on It


Hitachi Camera – Without Lenes

Hitachi has been working on developing cameras which does not seen to have lenses and the company claims that the images taken with the camera would be refocused after they are captured. They have announced the progress of a technology for digital camera which has the potential of capturing images without the use of a lens.

The intention is to make cameras much thinner as well as lighter, suitable for cars and mobile devices which could take minimum space. Another aspect is that of the robots – technology and Hitachi would be providing fewer limitations in placing of the cameras. As to Apple’s claim that eliminating the headphone jack permits bigger batteries as well as other parts to be placed in it. Hitachi states that the camera which utilises lensless tech would be much slimmer and lighter.

The lensless cameras are possible due to a pattern development technique known as `Moiré fringes’. Hitachi intends to utilise these cameras that tend to use this technology by 2018. The company also expects to use lensless photography in automated driving, vehicles as well as robotics.

Fourier Transform

With the help of investigation tech like CCTV, the images of individuals often tend to be blurred owing to low focal ranges. For instance, with Hitachi’s lensless camera tech, the still images would theoretically get adjusted on the fly from a range of depths in identifying individuals clearly.

The sensor has a film placed before it comprising of a pattern of concentric and when an image of the pattern is taken, it tends to cast a shadow due to the light which strikes it, on the sensor. Thereafter the shadow is captured by the sensor and overlaid on another pattern concentric just like the one place before the sensor at the time of the image process.

This tends to develop a moiré effect which is a kind of interference resulted by the two patterns touched. There is a possibility of using these data to reconstruct the concluding image by using the Fourier transform.

Capture Angle/Pattern of Light

Hitachi technology also tends to provide other benefits. In fact when the shutter tends to capture all the information connected to depth, it is capable of changing the point of focus after one has captured an image. The design of the Hitachi camera is unique since it tends to do double duty wherein it not only captures the images without the use of the lens but also captures depth information and focus that image after the fact.

Basically it tends to capture the angle and the pattern of the light which comes in the sensor that enables to change what is in focus after the detail by overlaying a another pattern over the captured shadow during processing.

We already other products which tend to provide the same function, for instance, the Lytro Illum and the difference in this case is the size which is more compact. The small range Xperia tends to have a bigger space. Sony Xperia Z5 Compact on offer from Amazon Marketplace to 369 euro or from Amazon at 419 euro.