Patent ID: 9551651
Date: 2017-01-24
CPC Classifications: G01J,G01N

Claim:
1. A near infrared spectroscope adapted to be pressed against material to be analyzed, the spectroscope comprising: a sensor assembly including a housing with an end structure adapted to engage material to be examined; a near infrared light source mounted in the housing; a near infrared light sensor mounted in the housing, and positioned to receive near infrared light from the near infrared light source, reflected off of the material; a glass mounted in the housing adjacent the light source so that light from the light source passes through the glass, the glass being spaced apart from the end structure, the near infrared light sensor being positioned such that the glass is between the sensor and the end structure; a glass heater adjacent the glass and capable of heating the glass; and a temperature sensor capable of sensing a temperature from the glass, the glass heater being activated in response to the temperature from the glass being lower than a predetermined value.