Optical system and head-mounted device
AssigneeGoertek Optical Technology Co., Ltd.
InventorChaiyuan SHI
Life of this patent
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Abstract
Disclosed are an optical system and a head-mounted device. The optical system comprises a beam-splitter, a first lens, a second lens, and a third lens in sequence along a light transmission direction, wherein, the first lens has a positive focal power; the second lens has a negative focal power; the third lens has a positive focal power, and is provided with a polarization-reflecting film on a light incident surface thereof; defining a refractive index of the first lens as n1, a refractive index of the second lens as n2, a refractive index of the third lens as n3, a chromatic dispersion coefficient of the first lens as v1, a chromatic dispersion coefficient of the second lens as v2, and a chromatic dispersion coefficient of the third lens as v3, then n1<n2, n2>n3, v1>v2, and v2<v3.
Claims10
An optical system, comprising a beam-splitter, a first lens, a second lens, and a third lens in sequence along a light transmission direction, wherein
- the first lens has a positive focal power,
- the second lens has a negative focal power, and
- the third lens has a positive focal power, and is provided with a polarization-reflecting film on a light incident surface thereof;
- and
- a refractive index of the first lens is defined as n1, a refractive index of the second lens is defined as n2, a refractive index of the third lens is defined as n3, a chromatic dispersion coefficient of the first lens is defined as v1, a chromatic dispersion coefficient of the second lens is defined as v2, and a chromatic dispersion coefficient of the third lens is defined as v3,
- wherein n1<n2, n2>n3, v1>v2, and v2<v3.
Dependencies are inferred from the claim text.