Eye Relief Adjustment Mechanism And Headset Display Device Including Eye Relief Adjustment Mechanism

A headset display device, comprising:

• an outer housing;
• lenses disposed in the outer housing and configured to pass an image from a screen;
• a forehead pad attached to the outer housing and configured to engage a forehead of a user to position eyes of the user with respect to the lenses;
• a forehead pad adjustment assembly including:
• an adjustment wheel partially exposed outside the outer housing and including an internal bevel gear ring that is rotatable about a first axis by the user, and
• a pinion gear meshed with the internal bevel gear ring and configured to rotate about a second axis, in response to the internal bevel gear ring being rotated about the first axis,
• a screw fixed to the pinion gear and operatively connected to the forehead pad, and
• a nut fixed to a forehead pad frame supporting the forehead pad.

An adjustment mechanism for adjusting an eye-to-lens distance of a headset display device, the adjustment mechanism comprising:

• a first gear disposed in the headset display device and rotatable about a first axis by a user;
• a second gear meshed with the first gear in the headset display device and configured to rotate about a second axis, in response to the first gear being rotated about the first axis;
• and
• a screw fixed to the second gear in the headset display device and configured to rotate together with the second gear to move a forehead pad of the headset display device,
• wherein the second axis is inclined with respect to the first axis;
• and
• a nut fixed to a forehead pad frame supporting the forehead pad, wherein the nut receives the screw and is configured to move along the screw to move the forehead pad frame, in response to the screw being rotated.