Tilt angle adjustable mechanism for compact disc recording/reproducing device

An adjustment mechanism for use in a compact disc recording/reproducing device, which operates with a laser beam of a laser incident on a disc, for ensuring a proper tilt angle, said adjustment mechanism comprising:

• a base;
• a pick-up head, carrying said laser;
• a first guiding rod and a second guiding rod with ends for guiding a movement of said pick-up head, said first and second guiding rods being parallel to each other and forming a plane with an orientation with respect to the disc that determines said tilt angle;
• and
• at least three supports, extending rom said base in a direction that is defined as upward, each of said supports holding a supported end, which is one of said ends of said first and second guiding rods and has a diameter, and comprising:
• a main body, mounted on said base, having an accommodating space for accommodating said supported end,
• a spring, laid into said accommodating space of said main body pressing from below on said supported end, and
• an adjusting screw, mounted in a threaded vertical hole in said main body, leaning on said supported end from above, such that said supported end has a well-defined vertical position, which is adjusted by turning said adjusting screw;
• wherein, by adjusting said at least three supports, said orientation of said plane is adjusted;
• further wherein for each of said at least three supports, said main body has an opening with a width that is about equal to said diameter of said supported end for fixing said supported end horizontally.