JPS591018U

JPS591018U - cylindrical lens

Info

Publication number: JPS591018U
Application number: JP9448482U
Authority: JP
Inventors: 満西川
Original assignee: 工業技術院長
Priority date: 1982-06-25
Filing date: 1982-06-25
Publication date: 1984-01-06

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は平凸レンズ２枚を組合わせた円柱レンズの説明
図、第２図は円柱レンズと球面収差の関係説明図、第３
図は本考案に係る円柱レンズの実施例説明図、第４図（
ま円柱レンズの曲率半径比と球面収差との関係特性図で
ある。１・・・物体側平凸レンズ、２・・・像側平凸レンズ、
Ｈ・・・後側主点、Ｆ・・・後側焦点、Ｅ・・・レンズ
後端、Δ・・・球面収差量。Figure 1 is an illustration of a cylindrical lens that combines two plano-convex lenses, Figure 2 is an illustration of the relationship between the cylindrical lens and spherical aberration, and Figure 3 is an illustration of the relationship between the cylindrical lens and spherical aberration.
The figure is an explanatory diagram of an embodiment of the cylindrical lens according to the present invention, and Fig. 4 (
It is a characteristic diagram of the relationship between the curvature radius ratio and spherical aberration of a cylindrical lens. 1... Object side plano-convex lens, 2... Image side plano-convex lens,
H: Rear principal point, F: Rear focal point, E: Rear end of lens, Δ: Amount of spherical aberration.

Claims

[Scope of utility model registration request]

In a cylindrical lens that combines the convex surfaces of two plano-convex lenses, the radius of curvature of the convex surfaces on the object side and image side is rin.
When using r2, refractive index n = 1.80, rl
A cylindrical lens characterized in that :r2=3:1.