Lens assembly and method for manufacturing the same

• US 7,826,153 B2
• Filed: 11/21/2007
• Issued: 11/02/2010
• Est. Priority Date: 11/24/2006
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Hong, Jung Ha
• Primary Examiner(s): Choi; William C
• Application Number:
  US11/944,184
• Publication Number:
  US 20080123199A1
• Time in Patent Office: 1,077 Days
• Field of Search: 359/796, 359/797
• US Class Current: 359/797
• CPC Class Codes: B29D 11/00009 Production of simple or compound lenses
• CPC Class Codes: G02B 13/001 Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras G02B23/243 takes precedence

Abstract

Disclosed are a lens assembly and a method for manufacturing the same. The method includes delineating and processing a surface of a lens substrate to form a plurality of lens units; bonding a plurality of such lens substrates having different properties to each other as one integrated body; and dicing the integrated body into a lens unit, thereby producing a plurality of lens assemblies.

Claims

1. A lens assembly, comprising:

a plurality of lenses formed by stacking and bonding a plurality of lens wafers, each lens wafer including a plurality of lens units, and then dicing the stacked and bonded plurality of lens wafers according to lens unit, wherein each of the lenses of the plurality of lenses includes curvature parts and peripheral parts, wherein the peripheral parts of the plurality of lenses are coupled to each other, wherein the curvature parts of the plurality of lenses have different curvatures according to the lenses; and

a stop substrate interposed between lenses of the plurality of lenses in order to adjust an amount of light, wherein the stop substrate is provided with a hole passing through the stop substrate.

2. The lens assembly according to claim 1, wherein the stop substrate comprises a silicon material.

3. The lens assembly according to claim 1, further comprising a color filter bonded to one end portion of the lenses of the plurality of lenses.

4. The lens assembly according to claim 1, wherein the lenses of the plurality of lenses comprise glass.

5. The lens assembly according to claim 1, wherein the peripheral parts include a primary peripheral part from a first lens of the plurality of lenses and a secondary peripheral part from a second lens of the plurality of lenses, wherein the primary peripheral part and the secondary peripheral part are bonded to each other.

6. A lens assembly comprising:

a first lens including a first curvature part having a first curvature and a first peripheral part formed in a vicinity of the first curvature part;

a second lens including a second curvature part having a second curvature and a second peripheral part formed in a vicinity of the second curvature part;

a third lens including a third curvature part having a third curvature and a third peripheral part formed in a vicinity of the third curvature part;

a fourth lens including a fourth curvature part having a fourth curvature and a fourth peripheral part formed in a vicinity of the fourth curvature part; and

a stop substrate which fixes the lenses to each other, and is interposed between the lenses or bonded to an upper end of the first lens in order to adjust an amount of light,

wherein the first peripheral part is coupled to the second peripheral part, and side surfaces of the coupled first and second lenses are along a same vertical plane,

wherein the second peripheral part is coupled to the third peripheral part, and side surfaces of the coupled first, second, and third lenses are arranged in the same vertical plane,

wherein the third peripheral part is coupled to the fourth peripheral part, and side surfaces of the coupled first, second, third, and fourth lenses are arranged in the same vertical plane.

7. The lens assembly as claimed in claim 6, wherein the stop substrate includes a silicon material, and is provided with a hole passing through the stop substrate in order to adjust an amount of light.

8. The lens assembly as claimed in claim 6, further comprising a color filter bonded to one end portion of the bonded lenses.

9. The lens assembly as claimed in claim 6, wherein the first, second, third, and fourth lenses include glass.

10. The lens assembly as claimed in claim 6, wherein the curvature parts have different curvatures according to the first, second, third, and fourth lenses.

11. The lens assembly as claimed in claim 6, wherein the peripheral parts include first, second, third and fourth peripheral parts which are bonded to each other.