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Optical filter for dental light curing machine

A technology of light curing machine and optical filter, applied in the fields of optical filter, dentistry, medical science, etc., can solve the problems of reduced filter life, cut-off wavelength drift, foaming, etc., to increase the curing depth and improve the service life , the effect of stable spectral characteristics

Inactive Publication Date: 2007-10-03
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing optical filters will reduce their service life due to high temperature exposure during use, and there will be cut-off wavelength drift, foaming, and shedding, which will cause damage to the human body due to ultraviolet light transmission.

Method used

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  • Optical filter for dental light curing machine
  • Optical filter for dental light curing machine
  • Optical filter for dental light curing machine

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Embodiment Construction

[0019] The design process of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] The invention discloses a dental light curing machine optical filter for eliminating ultraviolet rays and near infrared rays of the dental light curing machine.

[0021] The optical filter among the present invention is to be plated on the substrate of the ultraviolet absorbing material the high and low refractive index alternating composite dielectric film, and the high refractive index material is Ta 2 o 5 、TiO 2 Or ZnS, the low refractive index medium layer is SiO 2 、Al 2 o 3 or MgF 2 . The main structure of the film system is four cut-off filter films with different cut-off wavelengths, and the film system structure is

[0022] ( H 2 L H 2 ) 10 ...

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Abstract

The present invention relates to optical filter for dental light curing machine, and provides one kind of optical filter structure with double plated surfaces and capacity of eliminating ultraviolet ray and near infrared ray for dental light curing machine. The optical filter structure possesses high effective curing light transmittance, increased curing depth of dental light curing machine, less temperature raising and effectively increased service life. Structurally, the optical filter has cut-off filtering films comprising high and low refraction index materials coated to the both sides.

Description

technical field [0001] The invention relates to the field of filters for dental light curing machines, in particular to a filter for dental light curing machines capable of eliminating ultraviolet rays and near infrared rays. technical background [0002] Dental light curing machine is a product that uses the principle of light radiation to quickly and effectively polymerize light-curing resins. It is used in stomatology for tooth restoration. Photocurable materials are composed of polymer composite materials plus "photocatalyst (photosensitizer)". Under the irradiation of the high-intensity blue light emitted by the light curing machine, the photocatalyst absorbs the radiation energy to form active free radicals or cations, triggering reactions such as polymerization and crosslinking of monomers and prepolymers. become solid. The material after normal curing has the strength similar to natural teeth, wear-resistant, and can well meet the clinical requirements of oral cavi...

Claims

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Application Information

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IPC IPC(8): G02B5/20A61C13/15
Inventor 江绍基陈少飞黄绮雯金涛
Owner SUN YAT SEN UNIV
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