High performance optical probe of white light dust particle counter

• Main Authors: HUIJIE HUANG, DUNWU LU, LONGLONG DU
• Format: Patent
• Language: English
• Published: 01.03.2000
• Edition: 7
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The utility model relates to a high performance optical probe of white light dust particle counter, comprising two orthogonal illuminating light paths and scattered light collecting light paths. On the illuminating light paths, an illuminating lens group, a light sensitive area and a light trapping whose inner part is provided with a spherical reflector are orderly provided along the forward direction of the light beam G emitted by the light source of the incandescent lamp. The orthogonal intersecting point of the light axis O < 1 > O< 1 > and O< 2 > O< 2 > of the two light paths is the central point O of the sensitive area. The broad light acquisition light path is provided with a concave mirror, a collecting mirror, a field diaphragm and a photo detector element. Compared with prior art, the sensibility, the counting efficiency, the grain diameter concentration ratio as well as the signal intensity and the signal to noise ratio of this optic probe are highly increased.