Optical device and method for fabricating the same

• US 20050094937A1
• Filed: 11/04/2004
• Published: 05/05/2005
• Est. Priority Date: 11/05/2003
• Status: Abandoned Application

• Current Assignee: Nippon Sheet Glass Company Limited (Nippon Telegraph and Telephone Corporation)
• Original Assignee: Nippon Sheet Glass Company Limited (Nippon Telegraph and Telephone Corporation)
• Inventors: Sato, Shiro, Nemoto, Hiroyuki
• Application Number:
  US10/981,274
• Publication Number:
  US 20050094937A1
• Time in Patent Office: Days
• US Class Current: 385/33
• CPC Class Codes: B29C 65/1406 Ultraviolet [UV] radiation
• CPC Class Codes: B29C 65/1412 Infrared [IR] radiation
• CPC Class Codes: B29C 65/1435 at least passing through one of the parts to be joined, i.e. transmission welding
• CPC Class Codes: B29C 65/1477 making use of an absorber or impact modifier B29C65/1677 takes precedence
• CPC Class Codes: B29C 65/148 placed at the interface
• CPC Class Codes: B29C 65/1483 coated on the article
• CPC Class Codes: B29C 65/1616 Near infrared radiation [NIR], e.g. by YAG lasers
• CPC Class Codes: B29C 65/1635 at least passing through one of the parts to be joined, i.e. laser transmission welding
• CPC Class Codes: B29C 65/1638 focusing the laser beam on the interface
• CPC Class Codes: B29C 65/1648 radiating the edges of the parts to be joined
• CPC Class Codes: B29C 65/1664 making use of several radiators
• CPC Class Codes: B29C 65/168 placed at the interface
• CPC Class Codes: B29C 65/1683 coated on the article
• CPC Class Codes: B29C 65/342 comprising at least a single wire, e.g. in the form of a winding
• CPC Class Codes: B29C 65/3468 characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings B29C65/3668 takes precedence
• CPC Class Codes: B29C 65/362 comprising at least a single wire, e.g. in the form of a winding
• CPC Class Codes: B29C 65/4815 Hot melt adhesives, e.g. thermoplastic adhesives
• CPC Class Codes: B29C 66/1122 Single lap to lap joints, i.e. overlap joints B29C66/45, B29C66/472, B29C66/52272 take precedence
• CPC Class Codes: B29C 66/43 Joining a relatively small portion of the surface of said articles B29C66/45 takes precedence
• CPC Class Codes: B29C 66/54 Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
• CPC Class Codes: B29C 66/71 : characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29K 2023/00 : Use of polyalkenes or derivatives thereof as moulding material
• CPC Class Codes: B29K 2023/38 : Polymers of cycloalkenes, e.g. norbornene or cyclopentene
• CPC Class Codes: B29L 2011/0016 : Lenses
• CPC Class Codes: G02B 3/0056 : arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085
• CPC Class Codes: G02B 3/0062 : Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
• CPC Class Codes: G02B 3/0068 : arranged in a single integral body or plate, e.g. laminates or hybrid structures with other optical elements G02B5/1885, G02B17/002, G02B30/27 take precedence
• CPC Class Codes: G02B 3/0075 : characterized by non-optical structures, e.g. having integrated holding or alignment means
• CPC Class Codes: G02B 6/4237 : Welding

Abstract

Semi-columnar shaped convex portions are formed on external areas of respective resin lens plates. One semi-columnar shaped convex portion and two semi-columnar shaped convex portions are formed at the top surface of the bottom resin lens plate and the bottom surface of the top resin lens plate, respectively. Then, the top resin lens plate and the bottom resin lens plate are temporarily fixed by matching the one semi-columnar shaped convex portion into the area between the two semi-columnar shaped convex portions. Then, after the temporal fixing, the joints of the resin lens plates are heated and melted to form a welding portion. Then, the top and bottom resin lens plate are welded tightly via the welding portion.

Claims

1. An optical device comprising a plurality of optical parts which are joined with one another at joints thereof,

wherein said joints are made of a material which generates heat by an energy supplied from an energy supplier and melts by said heat to form a welding portion, and said plurality of optical parts are welded via said welding portion.

2. An optical device comprising a plurality of optical parts which are joined with one another at joints thereof,

wherein at least one of said joints are made of a material which generates heat by an energy supplied from an energy supplier and melts by said heat to form a welding portion, and said plurality of optical parts are welded via said welding portion.

3. An optical device comprising a plurality of optical parts which are joined with one another at joints thereof,

wherein at least one of said joints includes a substance which generates heat by an energy supplied from an energy supplier and melts by said heat to form a welding portion, and said plurality of optical parts are welded via said welding portion.

4. An optical device comprising:

a plurality of optical parts which are joined with one another at joints thereof, and

a part to be melted by heat which is formed between said joints,

wherein said heat is generated at said part by an energy supplied from an energy supplier to melt said joints and said part and thus, to form a welding portion, and said plurality of optical parts are welded via said welding portion.

5. The optical device as defined in claim 4, wherein said part includes a light shielding film.

6. An optical device comprising:

a plurality of optical parts which are joined with one another at joints thereof, and

a part to generate heat by an energy from an energy supplier which is formed between said joints,

wherein said joints are melted by said heat generated at said part to form a welding portion, and said plurality of optical parts are welded via said welding portion.

7. The optical device as defined in claim 6, wherein said part includes a metallic part.

8. An optical device comprising:

a plurality of resin lens plates which are joined with one another at joints thereof, and

minute spherical or aspherical convex lenses which are formed at said plurality of resin lens plates by a given pitch,

wherein said joints are made of a material which generates heat by an energy supplied from an energy supplier and melts by said heat to form a welding portion, and said plurality of resin lens plates are welded via said welding portion.

9. An optical device comprising:

a plurality of resin lens plates which are joined with one another at joints thereof, and

minute spherical or aspherical convex lenses which are formed at said plurality of resin lens plates by a given pitch,

wherein at least one of said joints are made of a material which generates heat by an energy supplied from an energy supplier and melts by said heat to form a welding portion, and said plurality of resin lens plates are welded via said welding portion.

10. An optical device comprising:

a plurality of resin lens plates which are joined with one another at joints thereof, and

minute spherical or aspherical convex lenses which are formed at said plurality of resin lens plates by a given pitch,

wherein at least one of said joints includes a substance which generates heat by an energy supplied from an energy supplier and melts by said heat to form a welding portion, and said plurality of resin lens plates are welded via said welding portion.

11. The optical device as defined in claim 10, wherein said substance is a light absorptive film.

12. The optical device as defined in claim 11, wherein said convex lenses include respective apertures which are made from said light absorptive film.

13. An optical device comprising:

a plurality of resin lens plates which are joined with one another at joints thereof,

minute spherical or aspherical convex lenses which are formed at said plurality of resin lens plates by a given pitch, and

a part to be melted by heat which is formed between said joints,

wherein said heat is generated at said part by an energy supplied from an energy supplier to melt said joints and said part and thus, to form a welding portion, and said plurality of resin lens plates are welded via said welding portion.

14. The optical device as defined in claim 13, wherein said part is a light shielding film.

15. The optical device as defined in claim 14, wherein said convex lenses include respective apertures which are made from said light shielding film.

16. An optical device comprising:

a plurality of resin lens plates which are joined with one another at joints thereof,

minute spherical or aspherical convex lenses which are formed at said plurality of resin lens plates by a given pitch, and

a part to generate heat by an energy from an energy supplier which is formed between said joints,

wherein said joints are melted by said heat generated at said part to form a welding portion, and said plurality of resin lens plates are welded via said welding portion.

17. The optical device as defined in claim 16, wherein said part includes a metallic part.

18. A method for fabricating an optical device, comprising the steps of:

preparing a plurality of optical parts with joints,

supplying an energy to said joints of said plurality of optical parts so that heat is generated at said joints by said energy and melts said joints to form a welding portion, and

welding said plurality of optical parts via said welding portion.

20. The fabricating method as defined in claim 18, wherein said energy includes laser beam, infrared light or ultraviolet light.

19. A method for fabricating an optical device, comprising the steps of:

preparing a plurality of resin lens plates with joints,

forming minute spherical or aspherical convex lenses on said plurality of resin lens plates,

supplying an energy to said joints of said plurality of resin lens plates so that heat is generated at said joints by said energy and melts said joints to form a welding portion, and

welding said plurality of resin lens plates via said welding portion.

21. The fabricating method as defined in claim 19, wherein said energy includes laser beam, infrared light or ultraviolet light.