Focus on challenging optical components

An optical lens refractive index of the nondestructive measurement method

by:ChangHui     2020-07-08
【 Patent abstract 】 An optical lens refractive index of nondestructive measuring method, its character is that includes the following steps: a provides a instruments that can detect the optical lens focal power, focal meter instrument is described, and the focal length, b focal meter using stated, or focal length meter measure the optical lens focal power Kv in air environment, 1, c focal meter using stated, or focal length meter measure used in the step b in the same optical lens in the refractive index of liquid environment for n focal power Kv, n, d optical lens focal power using the formula of Kv, n/( u - n) = c1 - C2, which deduces the formulas for the refractive index of optical lenses u = ( nKv,1- Kv, n) /( Kv,1- Kv, n) , including: mu for refractive index of optical lenses. Refractive index of optical lens nondestructive measurement method of the present invention is method is simple, the operation is simple, nondestructive determination and precisely measure the refractive index of the advantages of optical lenses. 【 Patent description 】 The nondestructive determination method for an optical lens refractive index [ Technology 】 ( 0001] The invention relates to an optical lens measurement method, in particular, is a kind of optical lens refractive index of the nondestructive measurement method. 【 Technical background 】 ( 0002] Light from a vacuum into medium refraction occurs, incident Angle and the ratio of the sine of the Angle of refraction is called medium 'absolute refractive index', hereinafter referred to as the refractive index. Glass lens refractive index is an important parameters of the lens. With the continuous development of new materials, the types of refractive index lens more and more, especially compound organic lenses with different refractive index material price difference is very big, the same degree of refractive index of 1. The lens than 1, 67. 56 lens price more than 10 times, and visual measurement is unable to distinguish the difference. Glasses industry there is no optical lens refractive index of measuring instruments, can only rely on using mirror table and focal degrees of lens refractive index determination method, the use of dioptric power meter to measure the lens dioptre first, reoccupy mirror table of lens dioptre, after the relevant formula conversion of measured lens refractive index, but this method is restricted by table measuring precision mirror degrees only applies to the lens refractive index of the general measurement; Another method is to use the dioptric power meter and surface curvature method, the use of dioptric power meter to measure the lens dioptre first, reoccupy surface before and after the meter to measure the lens curvature radius of curvature on the surface of the two, the three parameters into the refractive index of measured lens related formula is obtained, test program trival, means lag, measurement accuracy is poor. ( 0003] So currently on the market is not stable and reliable instrument can be accurate measurement of refractive index of optical lens, and the method for determination of the optical lens refractive index known inconvenience and problems discussed here exist. 【 The invention content 】 ( 0004] , the purpose of the present invention is to put forward a kind of just put lens optical lens in the testing instrument not contact lenses picture can get nondestructive measurement method of refractive index of optical lens. ( 0005] To achieve the above purpose, the technical solution of the present invention is: an optical lens refractive index of nondestructive measuring method, its character is that includes the following steps: a, provide the instruments that can detect the optical lens focal power, focal meter instrument is described, or focal length meter. B, described using coke meter, or focal length meter measure the optical lens focal power in air environment Λ; ,; C, described using coke meter, or focal length meter measure used in the step b in the same optical lens in the refractive index of liquid environment for eta focal power especially ^; D, optical lens focal power using the formula Claim 】 1. An optical lens refractive index of nondestructive measuring method, its character is that includes the following steps: a, provide the instruments that can detect the optical lens focal power, focal meter instrument is described, or focal length meter. B, described using coke meter, or focal length meter measure the optical lens focal power in air environment Λ; ,; C, described using coke meter, or focal length meter measure used in the step b in the same optical lens in the refractive index of liquid environment for eta focal power especially ^; D, optical lens focal power using the formula 2. As right request 1 stated the refractive index of optical lenses of nondestructive measuring method, its characteristics is described in the step a, focal viscometer is made by xiongbo precision instruments co. , LTD. - the LM 380 models of focal viscometer. 3. As right request 1 stated the refractive index of optical lenses of nondestructive measuring method, its characteristics is described in step c, refractive index eta 1 or more. 4. As right request 1 or 2 stated in the refractive index of optical lens nondestructive measurement method, its characteristics is described in step c, the refractive index of the eta value is bigger, the better. 5. As right request 1 stated the refractive index of optical lenses of nondestructive measuring method, its characteristics is described in step c, the liquid to evaporate fear of water. 6. As right request 1 stated the refractive index of optical lenses of nondestructive measuring method, its characteristics is described in step c, liquid for ethanol. 7. As right request 1 stated the refractive index of optical lenses of nondestructive measuring method, its characteristics is described in step c, liquid as glycerin.
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