Protective film with a polarizing plate adapted for liquid crystal displays; protective cases for tablet computers; protective covers for tablet computers; protective film adapted for liquid crystal displays; protective films adapted for screens for tablet computers; protective film specially adapted for liquid crystal monitors; protective films adapted for palmtop computers; surface protectors specially adapted for laptop screens; screen protectors specially adapted for laptop screens; surface protectors specially adapted for laptops; surface protectors specially adapted for electronic pocket translators; protective films specially adapted for screens for electronic pocket translators; protective films adapted for computer screens; covers for mobile telephones; cases for smartphones; cases for mobile telephones; screen protectors for mobile telephones; surface protectors specially adapted for navigational instruments; protective films specially adapted for navigational instruments; protective films adapted for mobile telephones; cases for smartphones; covers for smartphones; flip-style protective covers for smartphones; cases for smartphones incorporating a keyboard; protective films specially adapted for camera lenses for smartphones; protective films adapted for smartphones; protective films adapted for mobile telephone screens; protective films adapted for touchscreens for smartphones; surface protectors specially adapted for MP3 players; protective films specially adapted for MP3 players; protective films specially adapted for portable media players; cases for portable media players; screen protectors specially adapted for cameras; optical films attached to the display of electronic products for adjusting the viewing angle; optical films attached to the display of electronic products for adjusting the imaging clarity.