Super-shallow detecting spectrum probe

Abstract

The invention discloses a super-shallow detecting spectrum probe. The super-shallow detecting spectrum probe comprises an illumination optical fiber, a collection optical fiber, a coupling lens and a shell; the illumination optical fiber is used for leading the light emitted from a light source into the coupling lens to form an illumination spot on a to-be-detected object through the irradiation of the coupling lens; the light ray irradiated on the to-be-detected object is capable of entering into the collection optical fiber through the refraction of the coupling lens and can be guided to a check instrument through the collection optical fiber; the tail end surfaces of the collection optical fiber and the illumination optical fiber are polished as inclined planes, the inclined plane is used for enabling the light beam to deflect to an symmetry axis of the probe. By using the coupling lens and in matching with the bevel polishing of the end surfaces of the illumination optical fiber and the collection optical fiber, the superposed spots with high convergence, small diameter and large angle crossing are produced at the tail end of the spectrum probe through the illumination optical fiber and the collection optical fiber so as to obtain the short penetration depth. The pickup to the shallow signal is high in sensitivity and the interference from the deep signal is effectively avoided.

Description

technical field [0001] The invention relates to a spectrum probe, in particular to a very shallow detection spectrum probe. Background technique [0002] The optical fiber probe can pick up the reflection signal containing spectral information on the sample surface or in the solution, and the picked up signal is transmitted to the back-end spectrometer by the optical fiber, and is stored and analyzed by the computer equipment. Fiber optic probes are widely used in biomedical and chemical detection. Especially in biological detection, due to the small size of the optical fiber probe, the intrusion and damage to the detected object are extremely low, so it can perform living body measurement, and it is very flexible and convenient to use. However, due to the layering and complexity of biological tissues, the picked-up spectral signals are often interfered by other tissues. For example, when performing spectral detection on skin surface tissue, it is often interfered by the l...

AI Technical Summary

Problems solved by technology

However, due to the stratification and complexity of biological tissues, the picked-up spectral signals are often interfered by other tissues

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