Camera module
AssigneeLG Innotek Co., Ltd.
InventorKang Yeol Park
Life of this patent
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Abstract
A camera module according to an embodiment of the present invention includes a light emitting unit which emits light with a spot light pattern or flood light pattern to an object, and a light receiving unit which receives light reflected by the object, wherein the light emitting unit includes a light source including a plurality of emitters disposed at a predetermined pitch, a lens assembly disposed to be spaced apart from an upper end of the light source, and a driving module which changes a distance between the light source and the lens assembly by moving the lens assembly by a predetermined movement distance from a reference distance in an optical axis direction.
Claims10
A camera module comprising:
- a light emitting unit configured to emit light with a spot light pattern or flood light pattern to an object;
- and
- a light receiving unit configured to receive light reflected by the object,
- wherein the light emitting unit includes a light source including a plurality of emitters each disposed at a predetermined pitch, a lens assembly disposed to be spaced apart from an upper end of the light source, and a driving module that changes a distance between the light source and the lens assembly by moving the lens assembly by a predetermined movement distance from a reference distance in an optical axis direction,
- wherein the reference distance is an effective focal length of the lens assembly,
- wherein, when the movement distance is in a first range, the light emitting unit is configured to emit light with the flood light pattern to the object,
- wherein the first range is set on the basis of a diameter of each of the plurality of emitters, a pitch between the plurality of emitters, and a divergence angle of each of the plurality of emitters, and
- wherein the first range (DR) is set according to Expression below:
- 2.4
- ×
- P
- E
- -
-
- D
- E
- 2
- ×
- tan
-
- (
- θ
- D
- 2
- )
- <
- DR
- <
- 4.2
- ×
- P
- E
- -
-
- D
- E
- 2
- ×
- tan
-
- (
- θ
- D
- 2
- )
- ,
- wherein PE denotes the pitch between the plurality of emitters, DE denotes the diameter of each of the plurality of emitters, and Op denotes the divergence angle of each of the plurality of emitters.
A camera module comprising:
- a light emitting unit configured to emit light with a spot light pattern or flood light pattern to an object;
- and
- a light receiving unit configured to receive light reflected by the object,
- wherein the light emitting unit includes a light source including a plurality of emitters each disposed at a predetermined pitch, a lens assembly disposed to be spaced apart from an upper end of the light source, and a driving module that changes a distance between the light source and the lens assembly by moving the lens assembly by a predetermined movement distance from a reference distance in an optical axis direction,
- wherein the reference distance is an effective focal length of the lens assembly,
- wherein, when the movement distance is in a first range, the light emitting unit is configured to emit light with the flood light pattern to the object,
- wherein the first range is set on the basis of a diameter of each of the plurality of emitters, a pitch between the plurality of emitters, and a divergence angle of each of the plurality of emitters, and
- wherein the first range (DR) is set according to Expression below:
- 3
- ×
- P
- E
- -
-
- D
- E
- 2
- ×
- tan
-
- (
- θ
- D
- 2
- )
- <
- DR
- <
- 4.2
- ×
- P
- E
- -
-
- D
- E
- 2
- ×
- tan
-
- (
- θ
- D
- 2
- )
- ,
- wherein PE denotes the pitch between the plurality of emitters, DE denotes the diameter of each of the plurality of emitters, and Op denotes the divergence angle of each of the plurality of emitters.
Dependencies are inferred from the claim text.