JPH0485410U - - Google Patents
Info
- Publication number
- JPH0485410U JPH0485410U JP12840490U JP12840490U JPH0485410U JP H0485410 U JPH0485410 U JP H0485410U JP 12840490 U JP12840490 U JP 12840490U JP 12840490 U JP12840490 U JP 12840490U JP H0485410 U JPH0485410 U JP H0485410U
- Authority
- JP
- Japan
- Prior art keywords
- lenses
- spacer
- distance
- optical system
- 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
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
Landscapes
- Lens Barrels (AREA)
Description
第１図は、この考案の１実施例によるビームエ
クスパンダの断面図、第２図はレンズ間隔の設計
値からのずれによるビーム拡がり角のずれを示す
図、第３図はこの考案の他の実施例を示す図、第
４図はこの考案の別の実施例を示す断面および外
観の図、そして第５図は、従来のビームエクスパ
ンダを示す断面図である。
図において、１は第１のレンズ、２は第２のレ
ンズ、４は鏡筒、８はスペーサ、１０はホルダ、
１１は凸加工、１２は凹加工、そして１３は中心
線である。なお、図中同一または相当する部分に
は同一符号を付して示してある。
Fig. 1 is a cross-sectional view of a beam expander according to one embodiment of this invention, Fig. 2 is a diagram showing the deviation of the beam divergence angle due to deviation of the lens interval from the designed value, and Fig. 3 is a diagram showing the deviation of the beam expansion angle according to another embodiment of this invention. FIG. 4 is a cross-sectional and external view showing another embodiment of this invention, and FIG. 5 is a cross-sectional view showing a conventional beam expander. In the figure, 1 is a first lens, 2 is a second lens, 4 is a lens barrel, 8 is a spacer, 10 is a holder,
11 is a convex process, 12 is a concave process, and 13 is a center line. Note that the same or corresponding parts in the drawings are designated by the same reference numerals.
Claims (1)
レンズ間隔を定めるスペーサと、上記レンズとス
ペーサを収納する鏡筒とを備えた光学系において
上記スペーサに可塑変形を生じさせて上述のレン
ズ間隔を調整することを特徴とする光学系。 In an optical system that includes a plurality of lenses, a spacer that is arranged between the lenses and determines the distance between the lenses, and a lens barrel that accommodates the lenses and the spacer, the spacer is plastically deformed to maintain the distance between the lenses. An optical system characterized by adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12840490U JPH0485410U (en) | 1990-11-30 | 1990-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12840490U JPH0485410U (en) | 1990-11-30 | 1990-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0485410U true JPH0485410U (en) | 1992-07-24 |
Family
ID=31875865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12840490U Pending JPH0485410U (en) | 1990-11-30 | 1990-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0485410U (en) |
-
1990
- 1990-11-30 JP JP12840490U patent/JPH0485410U/ja active Pending
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