JP2017194632A5 - - Google Patents

Claims (20)

An optical apparatus comprising a lens and a lens barrel provided with the lens inside the lens barrel,
A heat shield film on at least a part of the outer peripheral surface of the lens barrel;
The Saeginetsumaku is urethane resins, acrylic resins, epoxy resins, and combinations thereof, the resin being selected from among the average particle size be at d-line refractive index of 2.5 or more 3.2 or less optics but wherein the first particles is 2μm or more 5μm or less, the Rukoto include a second particles containing voids. The optical apparatus according to claim 1, wherein the first particles are contained in a ratio of 20% by volume or more and 60% by volume or less with respect to the heat shielding film. The optical apparatus according to claim 1, wherein the first particle is made of titanium oxide. The optical apparatus according to any one of claims 1 to 3, wherein the second particles are hollow particles. The optical instrument according to claim 4, wherein the average particle diameter of the second particles is 5 nm or more and 100 nm or less. The optical apparatus according to claim 4 or 5 which is the second particles starvation Rica. The optical apparatus according to any one of claims 1 to 6, wherein the second particles are contained in a ratio of 5% by volume or more and 50% by volume or less with respect to the heat shielding film. The optical device according to any one of claims 1 to 7 pencil hardness before Bark butter is less than H 5H.   The optical apparatus according to any one of claims 1 to 8, wherein the heat shielding film has an average film thickness of 10 μm to 70 μm. Urethane resins, acrylic resins, epoxy resins, and combinations thereof, the resin being selected from among the average particle size is at d-line refractive index of 2.5 or more 3.2 or less is at 2μm or more 5μm or less Saeginetsumaku characterized the first particles, including that the second particles containing voids. The heat shield film according to claim 10, wherein the first particles are contained in a ratio of 20% by volume or more and 60% by volume or less with respect to the heat shield film. The heat shielding film according to claim 10, wherein the first particles are made of titanium oxide. The heat shielding film according to any one of claims 10 to 12, wherein the second particles are hollow particles. The heat shielding film according to claim 13, wherein an average particle diameter of the second particles is 5 nm or more and 100 nm or less. Saeginetsumaku according to the second claim 13 or 14, which is a particle starvation Rica. The heat shield film according to any one of claims 10 to 15, wherein the second particles are contained in a ratio of 5% by volume or more and 50% by volume or less with respect to the heat shield film. Saeginetsumaku according to any one of claims 10 to 16 pencil hardness of the resins is less than H 5H.   The heat shielding film as described in any one of Claims 10-17 which has an average film thickness of 10 micrometers or more and 70 micrometers or less. Urethane resins, acrylic resins, epoxy resins, and an average particle diameter of 2μm were these unions, the resin chosen from the solution dissolved in a solvent, at d-line refractive index of 2.5 or more 3.2 or less A thermal barrier coating comprising a first particle which is not less than 5 μm and a second particle which contains pores . In a solution in which a resin selected from a urethane resin, an acrylic resin, an epoxy resin, and a combination thereof is dissolved in a solvent, the d-line refractive index is 2.5 or more and 3.2 or less, and the average particle diameter is 2 μm or more A method of manufacturing an optical apparatus, comprising the step of applying a thermal barrier coating comprising a first particle having a diameter of 5 μm or less and a second particle having a void.