JPS6338115U - - Google Patents
Info
- Publication number
- JPS6338115U JPS6338115U JP12992086U JP12992086U JPS6338115U JP S6338115 U JPS6338115 U JP S6338115U JP 12992086 U JP12992086 U JP 12992086U JP 12992086 U JP12992086 U JP 12992086U JP S6338115 U JPS6338115 U JP S6338115U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- optical system
- focus detection
- imaging
- condenser lens
- 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
- 238000003384 imaging method Methods 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
Landscapes
- Focusing (AREA)
Description
第１図は本考案による焦点検出用光学系の第一
実施例の断面図、第２図及び第３図は夫々第二及
び第三実施例の構造を示す断面図、第４図及び第
５図は夫々第三実施例のコンデンサーレンズ部の
斜視図及び該コンデンサーレンズ部の遮光部材の
平面図、第６図は第三実施例の一対の再結像レン
ズ部の斜視図、第７図は第四実施例の断面図、第
８図は第四実施例の再結像ミラーレンズ部の斜視
図、第９図は従来例の構造を示す断面図である。
６……対物レンズの予定焦点面、７……コンデ
ンサーレンズ部、８……反射面、９……再結像ミ
ラーレンズ部、１０……光電変換素子列、１１…
…凸レンズ、１２……空気レンズ、１３……コン
デンサーレンズ部の後面、１４……反射面、１５
……コンデンサーレンズ部、１５′……開口、１
６……平面部、１６′……遮光部材、１７……再
結像ミラーレンズ部、１８……ハーフミラー、１
９……再結像ミラーレンズ部。
FIG. 1 is a sectional view of a first embodiment of a focus detection optical system according to the present invention, FIGS. 2 and 3 are sectional views showing the structures of second and third embodiments, respectively, and FIGS. The figures are a perspective view of a condenser lens section and a plan view of a light shielding member of the condenser lens section of the third embodiment, respectively, FIG. 6 is a perspective view of a pair of re-imaging lens sections of the third embodiment, and FIG. FIG. 8 is a perspective view of the re-imaging mirror lens portion of the fourth embodiment, and FIG. 9 is a sectional view showing the structure of a conventional example. 6... Expected focal plane of objective lens, 7... Condenser lens section, 8... Reflective surface, 9... Reimaging mirror lens section, 10... Photoelectric conversion element array, 11...
... Convex lens, 12 ... Air lens, 13 ... Rear surface of condenser lens section, 14 ... Reflection surface, 15
...Condenser lens section, 15'...Aperture, 1
6... Flat part, 16'... Light shielding member, 17... Re-imaging mirror lens part, 18... Half mirror, 1
9...Re-imaging mirror lens section.
Claims (1)
ンサーレンズと、上記対物レンズにより形成され
た像を光電変換素子列上に再結像する一対の再結
像レンズとから成る焦点検出用光学系において、
上記コンデンサーレンズと一対の再結像レンズと
を一体のブロツクより構成し、上記再結像レンズ
を該ブロツク上に形成した凹型反射面より構成し
たことを特徴とする焦点検出用光学系。 (2) コンデンサーレンズを曲率を有する境界又
は空気レンズ若しくは空気レンズを含む光学系で
構成したことを特徴とする実用新案登録請求の範
囲(1)に記載の焦点検出用光学系。[Claims for Utility Model Registration] (1) A condenser lens located near the imaging plane of the objective lens, and a pair of re-imaging lenses that re-image the image formed by the objective lens onto a photoelectric conversion element array. In a focus detection optical system consisting of,
An optical system for focus detection, characterized in that the condenser lens and a pair of re-imaging lenses are constructed from an integral block, and the re-imaging lens is constructed from a concave reflective surface formed on the block. (2) The optical system for focus detection according to claim (1) for utility model registration, characterized in that the condenser lens is constituted by a boundary having curvature, an air lens, or an optical system including an air lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12992086U JPS6338115U (en) | 1986-08-26 | 1986-08-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12992086U JPS6338115U (en) | 1986-08-26 | 1986-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6338115U true JPS6338115U (en) | 1988-03-11 |
Family
ID=31026930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12992086U Pending JPS6338115U (en) | 1986-08-26 | 1986-08-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6338115U (en) |
-
1986
- 1986-08-26 JP JP12992086U patent/JPS6338115U/ja active Pending