LENS, HYBRID LENS, REPLACEMENT LENS, AND IMAGE PICK-UP DEVICE

• US 20140362456A1
• Filed: 08/22/2014
• Published: 12/11/2014
• Est. Priority Date: 02/24/2012
• Status: Abandoned Application

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: KOBAYASHI, Nobuyuki
• Application Number:
  US14/466,120
• Publication Number:
  US 20140362456A1
• Time in Patent Office: Days
• US Class Current: 359/796
• CPC Class Codes: C08F 122/20 Esters containing oxygen in addition to the carboxy oxygen
• CPC Class Codes: C08F 122/22 Esters containing nitrogen
• CPC Class Codes: C08F 2/44 Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
• CPC Class Codes: C08K 2003/2244 of zirconium
• CPC Class Codes: C08K 3/22 of metals
• CPC Class Codes: C08L 2201/10 Transparent films; Clear coatings; Transparent materials
• CPC Class Codes: C08L 33/08 Homopolymers or copolymers of acrylic acid esters
• CPC Class Codes: C08L 33/14 of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
• CPC Class Codes: G02B 1/041 Lenses

Abstract

The present disclosure provides a novel lens including a composite material using a matrix material having predetermined abnormal dispersion. The lens of the present disclosure is a lens including a composite material containing a resin and inorganic fine particles, the resin including a polymeric cured material of an aliphatic compound having a (meth)acryloyl group and represented by the following formula (I) (the symbols in the formula are as defined in the specification):

Claims

1. A lens comprising a composite material containing a resin and inorganic fine particles,

wherein the resin comprises a polymeric cured material of an aliphatic compound having a (meth)acryloyl group and represented by the following formula (I):

2. The lens according to claim 1, wherein a Δ

P_{g, F} representing abnormal dispersion of the resin is less than 0.03.

3. The lens according to claim 1, wherein the aliphatic compound is at least one compound selected from the group consisting of compounds represented by any of the following formulae (II), (III), and (IV):

4. The lens according to claim 1, wherein when a refractive index and an Abbe number of the resin are respectively denoted by nd and vd, 1.45<

nd<

1.55 and 45<

vd<

55 are satisfied.

5. The lens according to claim 1, wherein the polymeric cured material is a material cured by using a hydroxyketone compound having a molecular weight of 150 or more and 2000 or less as a polymerization initiator.

6. A hybrid lens comprising:

a first lens serving as a base; and

a second lens stacked on the first lens and containing a resin,

wherein the second lens is the lens according to claim 1.

7. A replacement lens attachable to and detachable from an image pick-up device, the replacement lens comprising the lens according to claim 1.

8. A replacement lens attachable to and detachable from an image pick-up device, the replacement lens comprising the hybrid lens according to claim 6.

9. An image pick-up device comprising the lens according to claim 1.

10. An image pick-up device comprising the hybrid lens according to claim 6.