Optical head apparatus applicable to optical disc apparatus

An optical head apparatus applicable to an optical disc apparatus, comprising:

• a case body having an open surface and a window through which an opto-electronics component can be positioned and housing optical components inside it;
• a lid being attachable and detachable with respect to the open surface of said case body;
• and
• a flexible printed circuit board having a base portion which is adhered to said lid and on which electronic components are mounted, and a protruding portion protruding from said base portion and having an opto-electronic component fixed to the distal end portion of it, said opto-electronic component being electrically connected with an electronic circuit which is formed by said electronic component on said base portion of said flexible printed circuit board, the distal end portion of said protruding portion of said flexible printed circuit board being fixed to said case body so that said opto-electronic component is positioned to said window,
• whereby, when said electronic circuit and said opto-electronic component are maintained in a status of electrical contact said lid can be attached and detached with respect to said case body due to the bending of said protruding portion of said flexible printed circuit board.