Patent ID: 11893756
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A depth camera device comprising:
a housing including a front panel having a front entrance window through which light is transmittable into the housing and a front exit window and a rear panel having a rear entrance window opposite the front entrance window and a rear exit window opposite the front exit window;
an optical emitter within the housing, wherein the optical emitter emits light in a first spectral band and is arranged such that light emitted by the optical emitter propagates outside the housing;
a photosensitive first detector within the housing, wherein the first detector is configured to detect light in the first spectral band and generate a first detection signal in response to the detected light in the first spectral band;
a photosensitive second detector within the housing, wherein the second detector is configured to detect light in a second spectral band different from the first spectral band and generate a second detection signal in response to the detected light in the second spectral band;
a front detection optical path along which light in the first spectral band entering the housing through the front entrance window travels from the front entrance window to the first detector, wherein the light in the first spectral band entering the housing through the front entrance window comprises light in the first spectral band reflected from at least one object in a field of view outside the housing;
a front supplemental detection optical path along which light in the second spectral band entering the housing through the front entrance window travels from the front entrance window to the second detector, wherein the light in the second spectral band entering the housing through the front entrance window comprises light in the second spectral band reflected from or emitted by the least one object in the field of view;
a front illumination optical path along which light emitted by the optical emitter travels from the optical emitter to the front exit window to exit the housing;
a rear illumination optical path along which light emitted by the optical emitter travels from the optical emitter to the rear exit window to exit the housing;
a rear detection optical path along which light in the first spectral band entering the housing through the rear entrance window travels from the rear entrance window to the first detector, wherein the light in the first spectral band entering the housing through the rear entrance window comprises light in the first spectral band reflected from at least one object in a further field of view outside the housing; and
a rear supplemental detection optical path along which light in the second spectral band entering the housing through the rear entrance window travels from the rear entrance window to the second detector, wherein the light in the second spectral band entering the housing through the rear entrance window comprises light in the second spectral band reflected from or emitted by the least one object in the further field of view,
wherein a portion of the front detection optical path leading from the front entrance window coincides with a portion of the front supplemental detection optical path leading from the front entrance window, and
wherein a portion of the rear detection optical path leading from the rear entrance window coincides with a portion of the rear supplemental detection optical path leading from the rear entrance window.