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A Broad Spectrum Endoscopic Imaging Adapter

An adapter and wide-spectrum technology, applied in endoscopy, medical science, surgery, etc., can solve problems such as inability to meet wide-spectrum imaging, narrow imaging spectrum, etc., and achieve the effect of improving optical imaging quality, small size, and simple structure

Active Publication Date: 2021-08-03
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing fixed-focus adapters for rigid tube endoscopes can no longer meet the needs of wide-spectrum imaging due to their narrow imaging spectrum (spectral width ≤ 800nm). Therefore, an endoscope adapter suitable for wide-spectrum imaging is urgently needed

Method used

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  • A Broad Spectrum Endoscopic Imaging Adapter
  • A Broad Spectrum Endoscopic Imaging Adapter
  • A Broad Spectrum Endoscopic Imaging Adapter

Examples

Experimental program
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Embodiment 1

[0045] Such as figure 1 As shown, the adapter includes a front protective window 6, a front gluing group 3, a convex lens 4, a rear gluing group 5, a rear protective window 7, an optical filter 9 and a detector protective window arranged coaxially in sequence from the object space 1 to the image space 2 10; Among them, the front cementing group 3 has negative refractive power, and is formed by cementing the first biconcave negative lens L1 and the first biconvex positive lens L2 arranged coaxially from the object side 1 to the image side 2; the convex lens 4 has a positive refractive power, which is a biconvex positive lens L3; the rear cementing group 5 has a negative refractive power, and is composed of a second biconvex positive lens L4 and a second double convex lens arranged coaxially in sequence from the object side 1 to the image side 2 The concave negative lens L5 is glued together; the front protective window 6 and the rear protective window 7 are lenses with both sid...

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Abstract

The invention discloses a wide-spectrum endoscope imaging adapter, which can effectively balance the chromatic aberration in the process of wide-spectrum light propagation by adopting a doublet lens structure, realize the chromatic aberration correction on the optical axis and outside the optical axis, and can also The aberrations on the optical axis and outside the optical axis are effectively corrected, so that the chromatic aberration and aberration correction effect in the process of wide-spectrum light propagation can be improved. The adapter can be made by using two doublet lens groups with negative power coaxially arranged in the front and back, and a double convex positive lens with positive power is arranged between the two doublet lens groups with negative power. It is suitable for wide-spectrum endoscopic imaging requirements, and while improving the optical imaging quality, the overall fixed focus has the advantages of simple structure, short overall optical length, small size, and convenient installation and adjustment, so it is more suitable for endoscopes imaging system.

Description

technical field [0001] The invention relates to the technical field of medical device endoscopes, in particular to a wide-spectrum endoscope imaging adapter. Background technique [0002] The endoscopic imaging system is a kind of medical detection instrument, doctors can use the endoscopic imaging system to observe the ulcer or tumor in the patient's body, and formulate the best treatment plan accordingly. [0003] With the maturity of high-sensitivity and high-precision optical imaging technology, broadband imaging detection, as an important detection method, has been more and more used in scientific research and production. The existing fixed-focus adapters for rigid endoscopes can no longer meet the needs of wide-spectrum imaging due to their narrow imaging spectrum (spectral width ≤ 800nm). Therefore, an endoscope adapter suitable for wide-spectrum imaging is urgently needed. Contents of the invention [0004] In view of this, the present invention provides a wide-sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B1/00
CPCA61B1/00163A61B1/00193
Inventor 田捷何坤山
Owner BEIHANG UNIV
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