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Optical display

An optical head-mounted display (OHMD) is a wearable device that has the capability of reflecting projected images as well as allowing the user to see through it, similar to augmented reality technology.

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Optical display

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  1. Optical display

  2. ABOUT ME ABU BAKAR NATIONALITY : PAKISTAN CITY : SIALKOT, PUNJAB MARITAL STATUS : SINGLE Tel: (+92) 322 7967172 E-Mail:abubakarmehmood786@yahoo.com CONTACT INFO PERSONAL PROFILE THE CREATOR ACADEMY thecreatorsacademyofficial The Creators Academy thecreatorsacademyofficial BS(HONS) PHYSICS UNIVERSITY OF SIALKOT UCQxAo-GBHUI2l9_LBYicsRw FOUNDER EDUCATION ORIGIN LAB, VIRTUAL LAB, ENDNOTE SOFTWARE, EMATHHELP SOFTWARE , MICROSOFT OFFICE, ADBOBE (PHOTOSHOP & ILUUSTRATOR), ARDUINO SOFTWARE, AMAZON VITUAL ASSISTAN, VIDEO EDITTING, SOCIAL MEDIA ACCOUNT MANAGEMENT URDU, PUNJABI, ENGLISH, ARABIC ABUBAKAR692909 @abubakar786786 Abubakar Bhutta @_abubakar786 ABU BAKAR SOCIAL MEDIA SKILLS & LANGUAGE

  3. HISTORY • Cathode ray tube was discovered by Johann Hittorf in 1869 in primitive Crookes tubes. •He observe that some unknown rays were emitted from the cathode which could cast shadows on a glowing wall of tube. • In 1890, Arthur Schuster and William Crookes demonstrated cathode ray could be deflected by electric field and magnetic field respectively. In 1907 Boris Rosing used CRT in the receiving end of an experimental video signal to form a picture

  4. What is cathode ray tube?

  5. How CRTS work and display?A CRT monitor contains millions of tiny red green and blue phosphorus dots that glow when struck by an electron beam that travels across the screen to create a visual image in a CRT monitor tube the cathode is a heated filament the heated filament is a vacuum created inside a glass tube the electrons are negative and the screen gives a positive charge so the screen glows

  6. BASIC CATHOD RAY TUBE The CRT uses and evacuated glass envelope which is large deep heavy and relatively fragile

  7. LCD • Also Know as Liquid crystal display • Liquid crystal display is a thin flat panel display deice used for electronically displaying information such as text , images and moving pictures. • LCD is used in computer monitors Televisions Instrument panes, Gaming devices etc. • Polarization of light is used here to display objects.

  8. liquid crystals can adopt a twisted up structure and when we apply electricity to them they straighten out again this is the key how LCD display turn pixel on and off

  9. in between the two polarizing filters there is a tiny twisted noematic liquid crystal that can be switched on or off electrically • when it is switched on it rotates the liquid pass through it through 90° effectively not allowing light to flow through the two polarizing filters and making the pixels look dark

  10. each pixel is controlled by a separate transistor that can switch it on or off many times each second .It also very the amount of light that pass hence giving different shades of red blue green to each Pixels.which in result collectively from a image.

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