Digital still camera module with light optimization mechanism
AssigneeHon Hai Precision Industry Co., Ltd.
InventorGa-Lane Chen
Life of this patent
Estimating the term…
Abstract
A lens module includes a barrel (40), a plurality of lenses (42), and a light guide plate (60). The barrel is covered at one end thereof with a transparent board (50). The lenses are received in the barrel. The light guide plate, which is received in the barrel and is located in the light path of the lenses, includes a transparent sheet plate (61) and a plurality of high-transmittance areas (62) defined therein. The high-transmittance areas have a higher transmittance than that of the sheet plate, and the profile and the density of the high-transmittance areas increase with the increase of a distance between a center of the light guide plate and a center of a respective high-transmittance area.
Claims15
A lens module comprising:
- a barrel comprising a transparent board covered one end of the barrel;
- at least one lens received in the barrel;
- and
- a light guide plate received in the barrel and located in the light path of the at least one lens, the light guide plate comprising a transparent sheet plate and a plurality of high-transmittance areas defined within the transparent sheet plate, the high-transmittance areas having a higher transmittance than that of the transparent sheet plate, the profile and the density of the high-transmittance areas increasing with the increase of a distance between a center of the light guide plate and the respective centers of the high-transmittance areas.
The lens module as claimed in claim 4, wherein the at least one lens is received in the first cavity and the light guide plate is received in the second cavity, the diameter of the light guide plate being about 5%˜15% larger than that of the at least one lens.
A digital still camera module comprising:
- a holder having a first end and a second end, the first end being open, the holder having a receiving cavity defined therein, the holder including a holder bottom at the second end thereof, the holder bottom having a receiving room defined therein, the receiving room communicating with the receiving cavity;
- a lens module, received in the receiving cavity, comprising:
- a barrel having a transparent board covered one end thereof,
- at least one lens received in the barrel;
- a light guide plate received in the barrel and located in the light path of the at least one lens, the light guide plate comprising a transparent sheet plate and a plurality of high-transmittance areas defined within the transparent sheet plate, the high-transmittance areas having a higher transmittance than that of the transparent sheet plate, the profile and the density of the high-transmittance areas increasing with the increase of a distance between a center of the light guide plate and the respective centers of the high-transmittance areas;
- and
- an image sensor mounted in the receiving room of the holder bottom, the image sensor being configured for receiving and processing light signals transmitted through the light guide plate.
Dependencies are inferred from the claim text.