BG51019A1 - Endoscope object glass - Google Patents

Endoscope object glass

Info

Publication number
BG51019A1
BG51019A1 BG8361288A BG8361288A BG51019A1 BG 51019 A1 BG51019 A1 BG 51019A1 BG 8361288 A BG8361288 A BG 8361288A BG 8361288 A BG8361288 A BG 8361288A BG 51019 A1 BG51019 A1 BG 51019A1
Authority
BG
Bulgaria
Prior art keywords
lens
plane
endoscope
view field
convex
Prior art date
Application number
BG8361288A
Inventor
Anatolij I Molev
Original Assignee
Vnii Med Priborostroenija
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vnii Med Priborostroenija filed Critical Vnii Med Priborostroenija
Publication of BG51019A1 publication Critical patent/BG51019A1/en

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Abstract

The endoscope is used in medical technology and optical systems. The endoscope provides a wider-angle view field and smaller f-ratio. The endoscope objective includes a negative-meniscus lens and a magnifying component consisting of three positive lenses and a plane-concave lens (8). The first positive lens is a plane-convex lens (3). The second lens consists of a plane-concave lens (5) and a double-convex lens (6) glued together, while the third lens (7) is plane-convex. The objective has a focal length of 1.13 mm an f-ratio of 1:2, and a view field of 120 degrees. The largest spherical aberration is 0.1 mm, and the meridional curvature and astigmatism do not exceed 0.035 mm. The relative distortion at the edge of the view field is 50 percent, and chromatic aberration increases to 0.01 mm.
BG8361288A 1986-09-29 1988-04-05 Endoscope object glass BG51019A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU4125437 1986-09-29

Publications (1)

Publication Number Publication Date
BG51019A1 true BG51019A1 (en) 1993-01-15

Family

ID=21259552

Family Applications (1)

Application Number Title Priority Date Filing Date
BG8361288A BG51019A1 (en) 1986-09-29 1988-04-05 Endoscope object glass

Country Status (1)

Country Link
BG (1) BG51019A1 (en)

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