JPS6185821U - - Google Patents
Info
- Publication number
- JPS6185821U JPS6185821U JP17006884U JP17006884U JPS6185821U JP S6185821 U JPS6185821 U JP S6185821U JP 17006884 U JP17006884 U JP 17006884U JP 17006884 U JP17006884 U JP 17006884U JP S6185821 U JPS6185821 U JP S6185821U
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- transparent member
- forming plane
- optical system
- focus adjustment
- 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
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Lens Barrels (AREA)
- Facsimile Heads (AREA)
Description
第１図及び第２図は夫々本考案に係る焦点調整
機構の一実施例を適用した光学系機構の動作前及
び動作後の状態を示す側面図、第３図及び第４図
は夫々上記機構の他の実施例を適用した光学系機
構の動作前及び動作後の状態を示す側面図、第５
図及び第６図は夫々従来の各種焦点調整機構を適
用した光学系機構の縦断側面図である。
１……基台、２……レンズ、３……ハウジング
、４……回転リング、５……固定リング、６……
回転防止キー、７，７−１……板状透明部材、７
ａ，７ｃ……斜面、８……結像面、９，９−１，
９−２……焦点、１０……見かけ上の光軸、１１
……実際の光軸。
1 and 2 are side views showing the state before and after the operation of an optical system mechanism to which an embodiment of the focus adjustment mechanism according to the present invention is applied, and FIGS. 3 and 4 respectively show the above mechanism. 5 is a side view showing the state before and after operation of the optical system mechanism to which another embodiment is applied; FIG.
6 and 6 are longitudinal sectional side views of optical system mechanisms to which various conventional focus adjustment mechanisms are applied. 1... Base, 2... Lens, 3... Housing, 4... Rotating ring, 5... Fixed ring, 6...
Anti-rotation key, 7, 7-1...Plate-shaped transparent member, 7
a, 7c... Slope, 8... Image forming surface, 9, 9-1,
9-2... Focus, 10... Apparent optical axis, 11
...Actual optical axis.
Claims (1)
投影する光学系機構において、夫々固定されたレ
ンズ及び結像面間に、屈折率が空気より大であり
、かつ表裏面が平行でない板状透明部材を少なく
とも一枚配置し、該透明部材がみかけ上の光軸に
垂直な方向とは所定の角度をもつた方向へ移動し
て焦点位置の調整を行なうよう構成してなる焦点
調整機構。 In an optical system mechanism that reduces and projects an image of an object onto a predetermined image forming plane through a lens, the refractive index between the fixed lenses and the image forming plane is greater than that of air, and the front and back surfaces are not parallel. A focus adjustment device in which at least one plate-like transparent member is arranged, and the transparent member is configured to move in a direction at a predetermined angle with respect to a direction perpendicular to the apparent optical axis to adjust the focal position. mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17006884U JPS6185821U (en) | 1984-11-09 | 1984-11-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17006884U JPS6185821U (en) | 1984-11-09 | 1984-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6185821U true JPS6185821U (en) | 1986-06-05 |
Family
ID=30727775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17006884U Pending JPS6185821U (en) | 1984-11-09 | 1984-11-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6185821U (en) |
-
1984
- 1984-11-09 JP JP17006884U patent/JPS6185821U/ja active Pending