| 摘要 |
PROBLEM TO BE SOLVED: To make proper and accurate performance evaluation which corresponds to the actual using state of a user by conducting an arithmetic process, taking into consideration of the positional relation of a pair of spectacle lens to the rotation center of an eyeball with the three-dimensional data, the prescribed using state parameters and material parameters of the spectacle lens. SOLUTION: An evaluation device for a pair of spectacle lens is provided with a three-dimensional measurement unit 200 measuring a surface shape with an interatomic force probe and a computer 100 calculating optical performance from various data. The computer 100 is provided with a turning center distance input section 103 inputting the distance between the eye side face of the spectacle lens and the turning center of an eyeball as a using state parameter input section, an eccentric quantity input section 104, a prism prescription input section 105, and a forward tilting angle input section 106. The optical performance at each position of the spectacle lens is obtained by the optical tracking of the main light passing through the rotation center of the eyeball or the light flux including the main light, based on the data of the measured values by the three-dimensional measurement unit 200 and individual parameters.
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