Abstract: The present invention is a method of adjusting a pulse wave measurement device attachable to a user's wrist. The pulse wave measurement device includes: a pulse wave sensor including a strain gauge and configured to acquire pulse wave by measuring radial artery pulse; pressing part for pressing the pulse wave sensor to the radial artery; and output part for outputting a measured value of the pulse wave sensor as digital signal. The adjusting method includes: acquiring pulse wave using pulse wave sensor when the pulse wave measurement device is attached to user's wrist, and outputting measured value thus acquired, as a digital signal; comparing voltage level of the digital signal with a range previously set with respect to maximum voltage level of output part; and adjusting or instructing pressing force on pulse wave sensor in a case where voltage level of the digital signal is outside the previously set range.

Abstract: On producing an antireflection-coated substrate which includes a transparent substrate (1) and an antireflection film formed on the transparent substrate, the antireflection film is made of a multilayer film having a medium refractive index layer (2), a high refractive index layer (3), and a low refractive index layer (4) successively formed on the transparent substrate in this order. The medium refractive index layer is made of a material containing silicon, tin, and oxygen. The high refractive index layer is made of a material containing oxygen and at least one element selected from a group consisting of titanium, niobium, tantalum, and hafnium. The low refractive index layer is made of a material containing silicon and oxygen. The antireflection film is formed by successively depositing these layers by an in-line sputtering apparatus.