Optical lens assembly and head-mounted electronic device
OwnerPing-Yi Chen, Fei-Hsin Tsai +1inventors
InventorsPing-Yi Chen, Fei-Hsin Tsai, Cong Ge
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Abstract
An optical lens assembly includes a phase retarder; a partial-reflective-partial-transmissive element; and in order from a visual side to an image source side: an absorptive polarizer, a reflective polarizer, a first lens with refractive power, a second lens with refractive power, and a third lens with positive refractive power; wherein the phase retarder and the partial-reflective-partial-transmissive element are sequentially arranged from the visual side to the image source side, and are disposed between the reflective polarizer and the third lens. The optical lens assembly may become lightweight and have good image quality when satisfying a specific condition.
Claims18
An optical lens assembly, comprising:
- a phase retarder;
- a partial-reflective-partial-transmissive element;
- and
- in order from a visual side to an image source side:
- an absorptive polarizer, a reflective polarizer, a first lens with refractive power, a second lens with refractive power, and a third lens with positive refractive power;
- wherein the phase retarder and the partial-reflective-partial-transmissive element are sequentially arranged from the visual side to the image source side, and are disposed between the reflective polarizer and the third lens, a maximum effective radius of an image source-side surface of the first lens is CA2, an absolute value of a displacement in parallel to an optical axis from an intersection between the image source-side surface of the first lens and the optical axis to the maximum effective radius position on the image source-side surface of the first lens is TDP2, a distance from a visual-side surface of the absorptive polarizer to an image plane along the optical axis is TL, a maximum image height of the optical lens assembly is IMH, and the following conditions are satisfied:
- 2.10<CA2/TDP2<19.82 and 0.93<TL/IMH<2.21.
A head-mounted electronic device, comprising:
- a housing;
- an optical lens assembly disposed in the housing;
- an image source disposed on an image source plane of the optical lens assembly in the housing;
- and
- a controller disposed in the housing and electrically connected to the image source;
- wherein the optical lens assembly comprising:
- a phase retarder;
- a partial-reflective-partial-transmissive element;
- and
- in order from a visual side to an image source side:
- an absorptive polarizer, a reflective polarizer, a first lens with refractive power, a second lens with refractive power, and a third lens with positive refractive power;
- wherein the phase retarder and the partial-reflective-partial-transmissive element are sequentially arranged from the visual side to the image source side, and are disposed between the reflective polarizer and the third lens, a maximum effective radius of an image source-side surface of the first lens is CA2, an absolute value of a displacement in parallel to an optical axis from an intersection between the image source-side surface of the first lens and the optical axis to the maximum effective radius position on the image source-side surface of the first lens is TDP2, a distance from a visual-side surface of the absorptive polarizer to an image plane along the optical axis is TL, a maximum image height of the optical lens assembly is IMH, and the following conditions are satisfied:
- 2.10<CA2/TDP2<19.82_and 0.93<TL/IMH<2.21.
Dependencies are inferred from the claim text.