Some recovery is possible, usually in the first few months after a stroke. Glasses or contact lenses generally will not help vision loss due to stroke.

by VD Tang · 2023 — Function · Focal length is the distance between the lens and the focal point, where the light rays converge or diverge. · The concept of ...

Our winning idea consisted of using person detection technology, to illuminate an LED strip either side of the pedestrian crossing, when a pedestrian is spotted, to keep pedestrians and drivers safe. We were keen to design something that would immediately improve road crossing safety and be cost effective enough so that councils can implement these solutions quickly.

Mettle Studio beat off stiff competition to win the competition and took their idea from idea to working prototype in just 5 days. The end prototype attracted lots of press attention!

In October 2017, Direct Line developed the world's smartest pedestrian crossing. The Smart Crossing spanned 22m of responsive road surface, using computer vision technology to "see" exactly what is happening around it, and an LED road surface to change its markings to keep users safe. The response from consumers highlighted a genuine demand for a new crossing solution, but also highlighted weaknesses in terms of feasibility, affordability and fit for all user types. So, Direct Line wanted to build on their original concept and held a competition to source innovative ideas.

Magnifying Definition

This was part of a stream of work during the sprint week looking at programming different light animations - we wanted to use eye catching animations, and keep these in line with the highway code. The animation would be even more likely to catch people's attention and aid those who were colour blind as they could recognise patterns of light instead of colour. We were careful to ensure the animation speed would not cause issues for those with epilepsy.

Contents · 6.1 "Black lights" · 6.2 Short-wave ultraviolet lamps · 6.3 Incandescent lamps · 6.4 Gas-discharge lamps · 6.5 Ultraviolet LEDs · 6.6 Ultraviolet lasers ...

OPTICAL COMPONENTS FOR FIRE CONTROL INSTRUMENTS; GENERAL SPECIFICATION GOVERNING THE NAMUFACTURE ASSEMBLY AND INSPECTION OF (SUPERSEDING MIL-O-13830A)

Setting up for our intense sprint week was absolutely crucial to its success. We invested time ahead of the sprint week in exploring different design approaches, investigating materials and technology available to us. We were extremely glad we put in the prep work - finding out just before kick off that one of our chosen materials was too potent to use in our workshop.

Magnifying glass app

Our winning idea consisted of using person detection technology, to illuminate an LED strip either side of the pedestrian crossing when a pedestrian is spotted, to keep pedestrians and drivers safe. We were keen to design something that would fit with existing road infrastructure, immediately improve road crossing safety and be cost effective enough so that councils can implement these solutions quickly and easily. Our longer term vision for the smart crossing is that it can communicate directly with autonomous vehicles and pedestrians, improving road safety as our roads and road users continue to evolve around us.

The hardware team got stuck into machining - testing out hundreds of cheap and available LEDs ordered from good old Amazon Prime. This is where we had a real panic moment . . .having wired in the LEDs we found the data signal from the LED driver was too weak to send over the longer cable needed for the crossing set-up. Not being able to illuminate the LEDs was going to be a problem, so we had to come together and figure out a reconfiguration and rewiring of the rig to accommodate the weaker signal.

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Magnifying Glass for Reading

At the end of the day we had a metre long prototype with the LEDs embedded, ready to be stress tested (by driving Alex's car over it). It passed the stress test and the rest of the rig was machined that evening.

In October 2017, Direct Line developed the world's smartest pedestrian crossing. The crossing used computer vision technology to "see" exactly what was happening around it, and an LED road surface to change its markings to keep users safe. The response from consumers highlighted a genuine demand for a new crossing solution, but also highlighted this prototypes weaknesses in terms of feasibility, affordability and fit for all user types. So, Direct Line held a competition to canvas other ideas and teams were invited to pitch ideas with the chance to win their idea to life in a 5 day Sprint week.

Thursday was demo day. An early start for team - 6am in Nunhead - it's a glamorous sprint life. We set up the full rig on a quiet road and vigorously tested the smart crossing in the real world - checking the camera heights and that the animations were working and easy to understand. It went incredibly well!

Alex Bone, Creative DirectorLuke Forward, Design DirectorSam Parkinson, Technical DirectorGiovanni Lenguito, Software EngineerEddie Li, Software Engineer

Magnifying Glass Amazon

The invention of the Fresnel lens was an enormous technological breakthrough in 1820 that affects us today – for example, in theater lights and car head ...

Friday was a brilliant day, we saw all of our work come together. We set our smart crossing up in Somerset House with a mock-up pedestrian crossing and tested our build in a safe environment. It was great to invite so many people in to test it. It withheld the testing, we gathered lots of really useful feedback and look forward to taking this concept forward.

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By day three we were able to pull the whole concept together - the rig was fully assembled with the LEDs wired in. The software team had nailed the computer control of the LEDs, even dividing the area around a pedestrian crossing into zones so that different patterns of light would be set off depending on where a person was detected, and reading video streams from two cameras to cover the crossing from all angles.

Magnifying Glass with Light

As the surface acts as a reflector, the directix has the same properties when located in front of the reflector. In other words the parabolic reflector theory ...

magnifying glass中文

Taking the original Smart Crossing as inspiration four teams pitched their ideas on how to develop the original Smart Crossing further to an expert panel including representatives from Makerversity, Direct Line, road charity Brake, and MP Barry Sheerman.

We always enjoy working on intense projects with tight knit teams - it's no surprise that close collaboration, a test and learn attitude, and having a unifying goal leads to great productivity. A big shout out to Direct Line and Makerversity for giving us the opportunity to improve road safety.

We kicked day one off with a full team meeting and sprint planning session, then it was straight into experimenting and playing. The software team got set up with Google TensorFlow and started to get to grips with person detection software. The hardware team got started on mocking up a rig for the crossing - gluing, drilling, screwing and hacking together any waste material they could find!

Aspherical lenses are curved outwards on their rear element so that they can better direct light rays into a single focal point. These counter-curves help ...

Our advanced photochromic lenses act as a barrier, blocking harmful UV and infrared rays and cooling your eyes by up to 6.1°F or 3.3°C¹. Now available in ...

Angular Field of View (AFOV). The angle of a lens's view cone, typically specified as the full angle (in degrees) with respect to the horizontal sensor ...