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Recently, Google filed a new patent for the US Patent and Trademark Office - Smart Contact Lens. The patent embeds the camera in contact lenses and has a variety of features.
Smart contact lenses use a miniature camera that is integrated directly into the lens. After the user wears the lens, the lens can be photographed at any time as the eyeball turns. In addition, for wearers with visual problems, the new system in this patent can use the input from the camera to find obstacles, and provide reminders and visual enhancements.
Previously, Google had also developed a smart contact lens that can measure blood glucose levels in diabetic patients. This contact lens can analyze the patient's glucose level through tears, providing the wearer with a more convenient and quick way of monitoring.
At present, many large technology companies are constantly researching and applying for new patents, but only a few of them can be converted into actual products.
In order to improve the clarity of the pattern and the photosensitive paste the uniform distribution of the screen surface, the drying process should ensure that no dust pollution around, and should be operating in the darkroom or yellow light. Place the screen frame, printed side up, keep the screen level. Dust free fan drying, but in order to speed up the drying speed drying box (Note: the maximum temperature must not exceed 40 ° C).
Scratch coating layer is fully dry, wet surface will affect the light sensitivity of the photosensitive paste must be done before the exposure. Not completely dry, there will be underexposed
Drying operation guide:
1) The third scratch coating method, each coated once must achieve sufficient
drying of a coating, otherwise, make moisture caught in the middle of the
photosensitive layer.
2) If possible, should be kept to a constant indoor temperature. If the indoor
humidity to extend the exposure time, especially in the summer, if not lower
humidity device, should pay special attention to this point. In fact, the cost
of installing lower humidity device is not too high
3) often used in the industrial drying machine (maximum temperature 40 °
C), especially in the more humid environment. Must know, however, that the
expansion due to heating causes the screen frame chromatic inconvenience that
is difficult to achieve chromatic accurate. Therefore, in order to ensure that
the chromatic accurate, all wire mesh and network box must be dried in the same
environment. And they should be allowed to return to room temperature before
making an exposure.
4) of the operating environment, should the exposure, dry place with the screen
frame making cleaning separately, because more humid in the production of wire
mesh and cleaning area
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