| 摘要 |
<p>The present invention relates to an optical system for measuring gas, which comprises: an infrared light source unit which radiates a first infrared ray in a specific wavelength band; a parallel light lens which converts the infrared ray into parallel light; a gas cell where an infrared ray transmitting window is formed in order to transmit the parallel light; a cylindrical focusing lens which converts the parallel light that has passed the gas cell into focusing oval light; a measurement light measuring unit which is positioned within the range of the focusing oval light in order to measure measurement light; and a reference light measuring unit which is positioned within the range of the focusing oval light, is placed in parallel to the measurement light measuring unit in a vertical direction to the optical axis of the first infrared ray, and measures reference light. In addition, the infrared light source unit, the parallel light lens, the gas cell, and the cylindrical focusing lens are positioned in the optical axis of the first infrared ray.</p> |
