Detection lens and detection method for head-mounted display
AssigneeGoertek Optical Technology Co., Ltd.
InventorSHIYU Zhang
Life of this patent
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Abstract
The present disclosure discloses a detection lens and detection method for a head-mounted display. The detection lens has a light incident end and is configured to receive light from the light incident end. The detection lens comprises a lens group, an overall entrance pupil of the lens group overlaps with its own aperture stop. The lens group comprises a first lens group and a second lens group, the first lens group is close to the light incident end relative to the second lens group in an axial direction of the detection lens, an effective focal length of the first lens group ranges from 15 mm to 40 mm, a magnification of the second lens group ranges from 0.5 to 2, and an effective focal length of the second lens group ranges from 40 mm to 500 mm.
Claims10
A detection lens for a head-mounted display, wherein,
- the detection lens has a light incident end and is configured to receive light from the light incident end;
- the detection lens comprises a lens group, wherein and an overall entrance pupil of the lens group overlaps with an aperture stop of the lens group;
- and
- the lens group comprises a first lens group and a second lens group, wherein
- the first lens group is closer to the light incident end relative to the second lens group in an axial direction of the detection lens,
- an effective focal length of the first lens group ranges from 15 mm to 40 mm,
- a magnification of the second lens group ranges from 0.5 to 2, and
- an effective focal length of the second lens group ranges from 40 mm to 500 mm.
Dependencies are inferred from the claim text.