JPH01155016U - - Google Patents
Info
- Publication number
- JPH01155016U JPH01155016U JP2549389U JP2549389U JPH01155016U JP H01155016 U JPH01155016 U JP H01155016U JP 2549389 U JP2549389 U JP 2549389U JP 2549389 U JP2549389 U JP 2549389U JP H01155016 U JPH01155016 U JP H01155016U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- refractive index
- face
- gradient index
- index
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 230000004075 alteration Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
Landscapes
- Lenses (AREA)
Description
第１図は従来の一体型組合せレンズの概略断面
図である。第２図は本考案の一実施例による一体
型レンズの概略断面図、第３図ａは球面レンズの
軸上収差を示す光路図、第３図ｂは同上のグラフ
、第４図ａは屈折率分布型レンズの軸上収差を示
す光路図、第４図ｂは同上のグラフ、第５図は屈
折率分布型レンズ単体の場合の開口数を求めるた
めの光路図、第６図は本考案の実施例による一体
型組合せレンズの開口数を求めるための光路図、
第７図は球面レンズの曲率半径と一体型組合せレ
ンズの開口数との関係を示すグラフである。
なお、図面に用いた符号において、１０……屈
折率分布型レンズ、１１……球面レンズ、１６…
…光ビーム、１７……光軸、である。
FIG. 1 is a schematic cross-sectional view of a conventional integrated combination lens. Figure 2 is a schematic sectional view of an integrated lens according to an embodiment of the present invention, Figure 3a is an optical path diagram showing the axial aberration of a spherical lens, Figure 3b is a graph of the same as above, and Figure 4a is a refraction diagram. An optical path diagram showing the axial aberration of a gradient index lens, FIG. 4b is the same graph as above, FIG. 5 is an optical path diagram for determining the numerical aperture of a single gradient index lens, and FIG. An optical path diagram for determining the numerical aperture of an integrated combination lens according to an embodiment of
FIG. 7 is a graph showing the relationship between the radius of curvature of a spherical lens and the numerical aperture of an integral combination lens. In addition, in the symbols used in the drawings, 10...gradient index lens, 11...spherical lens, 16...
...light beam, 17...optical axis.
Claims (1)
れ且つ内部において、中心軸からｒの距離におけ
る屈折率ｎ（ｒ）が、式： ｎ２（ｒ）＝ｎｏ２｛１−（ｇｒ）２＋ｈ４（
ｇｒ）４＋ｈ６（ｇｒ）６｝ （但し、ｎ０はレンズ中心軸における屈折率、
ｇ、ｈ４、ｈ６は分布定数である。） に従つて変化している屈折率分布型レンズと、 一方の面が凹面又は凸面に構成され且つ他方の
面が平面に構成されたほぼ一様な屈折率を有する
球面レンズとが夫々の平面において互いに接合さ
れ、 その際、前記屈折率分布型レンズと前記球面レ
ンズとが互いに逆の軸上収差を有していることを
特徴とする組合せレンズ。[Claims for Utility Model Registration] The light entrance end face and the light exit end face are each formed into a plane, and inside, the refractive index n(r) at a distance r from the central axis is expressed by the formula: n 2 (r) = no 2 {1-(gr) 2 +h 4 (
gr) 4 +h 6 (gr) 6 } (However, n 0 is the refractive index at the lens center axis,
g, h 4 and h 6 are distribution constants. ) A gradient index lens whose refractive index changes according to A combination lens, wherein the gradient index lens and the spherical lens have mutually opposite axial aberrations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2549389U JPH01155016U (en) | 1989-03-06 | 1989-03-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2549389U JPH01155016U (en) | 1989-03-06 | 1989-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01155016U true JPH01155016U (en) | 1989-10-25 |
Family
ID=31246278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2549389U Pending JPH01155016U (en) | 1989-03-06 | 1989-03-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01155016U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5229238A (en) * | 1975-08-30 | 1977-03-04 | Olympus Optical Co Ltd | Inside-view mirror objective optical system |
| JPS556354A (en) * | 1978-06-30 | 1980-01-17 | Agency Of Ind Science & Technol | Refractive index distribution type lens |
-
1989
- 1989-03-06 JP JP2549389U patent/JPH01155016U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5229238A (en) * | 1975-08-30 | 1977-03-04 | Olympus Optical Co Ltd | Inside-view mirror objective optical system |
| JPS556354A (en) * | 1978-06-30 | 1980-01-17 | Agency Of Ind Science & Technol | Refractive index distribution type lens |
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