Short-focus big view field camera lens

Short-focus big view field camera lens

CN
  • CN 2,725,918 Y
  • Filed: 06/26/2004
  • Issued: 09/14/2005
  • Est. Priority Date: 06/26/2004
  • Status: Active Grant
First Claim
Patent Images

1. , the burnt large-field shooting camera lens of a kind of weak point, has microscope base [2], end cap [1]], it is characterized in that in microscope base [2], being provided with four object lens and a diaphragm, cutoff filter [5] is from the object space number, first object lens one [9] is the bent moon negative lens, be positioned at camera lens top, object lens two [8] are the plano-convex positive lens, object lens three [7] are the biconvex positive lens, and object lens four [6] are double-concave negative lens, and diaphragm is between object lens one [9] and object lens two [8], wherein be provided with cemented surface between two object lens three [7] and object lens four [6], cutoff filter is coated with infrared cut coating.

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