The steel ruler water level meter is the most accurate way to measure the water level. A metric or imperial scaled steel ruler attached to a probe that is mounted on a metal or plastic steel. It is usually used to measure the water level in wells, boreholes and water level pipes. It is especially suitable for the observation of groundwater level in hydropower projects or the manual inspection of dam body immersion lines of earth and rock dams. The devices are characterized by a simple, fast and reliable measurement acquisition.
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Smart glass to create micro iris
Smart glass to create micro iris camera system miniaturization
The researchers used smart glass materials to develop a miniature low-power imaging lens micro-iris. Related papers were published in the recently published Optical Journal. The iris in the human eye controls the diameter of the pupil. The pupil is like a camera aperture, limiting the amount of light to control how much light reaches the retina. The micro-iris is equivalent to a miniature combination variable lens that limits the amount of light that reaches the sensor, affecting the sharpness of the entire photo.
The smart glass developed by the team for micro-iris is an electrochromic material that changes from transparent to opaque when micro-currents pass through it. According to the report of the Physicist Organization Network on June 18, the micro-iris film is made of two glass sheets coated with an electrochromic material PEDOT (polyethylenedioxythiophene) film, with a transparent electrode attached below. The micro-iris is 55 microns thick and becomes opaque when applied with a voltage of 1.5 volts and a current of 20 microamps.
Micro iris lens thickness is only 55 microns
The researchers also examined the light intensity, the switching time and the depth of focus of the micro-iris from opaque to opaque, and its depth of focus is comparable to that of a conventional lens. In addition, the micro-iris also has a memory effect that can maintain opacity without continuous energization, so it consumes minimal power and is an ideal wide-area camera component.
At present, other components of the camera have become increasingly light and portable, but it is still difficult to miniaturize a set of mechanical focus lenses. The first author of the paper, Tobias Doucheman, said: “There are no technical solutions to meet all the requirements of smart phones for combining variable apertures. Many programs that use strong absorbent materials require materials to be able to move to adjust The amount of light passed, and the electrochromic material used in this study can change the absorption of light in the static state, thereby changing the amount of light without the need for drive adjustment, which allows it to adapt to smaller devices, miniaturizing the entire camera system. â€
Doichman said that they will further explore the potential of optimization of electrochromic materials, focusing on improving its optical contrast and focus depth control - this is the most important hardware parameters, determines whether it can be used to the next generation of intelligence on the phone.
Glass layer implanted sensor
Glass layer implanted sensor screen intelligent
The glass layer in today's display seems to be a non-intelligent dead object, but agencies including Corning Inc. are studying new sensor technologies that will be implanted in glass to give the glass some intelligence. It is expected to play a role in mobile security.
The function of the glass layer in the current display screen is to allow display information and touch information to pass through. However, future screen glass will be implanted with more advanced technologies.
According to the American Science and Technology News website Addiction Science and Technology Report, researchers at Montreal University of Technology in Canada have developed sensors that can be implanted under Corning Gorilla Glass. As we all know, Gorilla Glass is a special glass with bulletproof function. Unintentional damage will not cause scratches. It is widely used in smart phones.
These sensors can depict waveguides inside the display glass so that they can track changes in light and light waves. In this way, the display screen can complete the work that has traditionally required connection lines and dedicated sensors.
Future display screens can use light to monitor temperature, and a unique optical model can be embedded in the glass layer, which allows the display screen to have the world's only identity (similar to the serial number of a car's engine).
Montreal University of Technology hopes to be able to apply to mobile phone products within a year. Currently, the research team is in touch with smartphone screen manufacturers to discuss sensor implantation. In the future, consumers will see the screen of the mobile phone will have the same intelligence as the mobile phone software and hardware system.
Camera lens miniaturized smart glass layer implanted sensor [Full text]
In security monitoring, the camera is undoubtedly an important part of the camera. The various technologies related to the camera are also key to each competition is one of the major projects. The camera can be divided into professional photography cameras, surveillance cameras and ordinary cameras, applications from professional photographers to general monitoring, to the current camera on each smart phone, a very wide application. The cameras in these applications are different depending on the requirements. A typical professional camera has a set of cumbersome mechanical lenses that rely on manual rotation to adjust the focal length and aperture. A major disadvantage of non-professional cameras for volume control and other purposes is that the aperture is not adjustable. However, a study at the University of Kaiserslautern in Germany may be able to change this situation. They have successfully developed a micro-iris film with a thickness of only 55 microns, which is equivalent to the diameter of a human hair and is expected to become a component of the future wide-area camera.