JPS6282501U - - Google Patents
Info
- Publication number
- JPS6282501U JPS6282501U JP1985174801U JP17480185U JPS6282501U JP S6282501 U JPS6282501 U JP S6282501U JP 1985174801 U JP1985174801 U JP 1985174801U JP 17480185 U JP17480185 U JP 17480185U JP S6282501 U JPS6282501 U JP S6282501U
- Authority
- JP
- Japan
- Prior art keywords
- plano
- convex lens
- outer periphery
- focal length
- center
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000004075 alteration Effects 0.000 description 4
Description
第１図及び第２図は本考案による平凸レンズの
球面収差を示す説明図、第３図は本案平凸レンズ
を使用したスポツトライトの照度分布曲線及び被
照面の状態を示す照度特性図、第４図は平凸レン
ズスポツトライトの構造を示す断面図、第５図は
従来の平凸レンズを用いたスポツトライトの照度
特性図、第６図は従来の平凸レンズの球面収差を
示す説明図、第７図は平凸レンズにおける中落ち
現象の原理説明図、第８図及び第９図は従来の各
種非球面平凸レンズにおける球面収差の説明図、
第１０図は正の球面収差を付与した非球面平凸レ
ンズを使用したスポツトライトの照度特性図であ
る。
図中、１：白熱電球、２：球面反射鏡、３：平
凸レンズ。
Figures 1 and 2 are explanatory diagrams showing the spherical aberration of the plano-convex lens according to the present invention, Figure 3 is an illuminance distribution curve and illuminance characteristic diagram showing the state of the illuminated surface of a spot light using the plano-convex lens according to the present invention, and Figure 4 The figure is a sectional view showing the structure of a plano-convex lens spotlight, Figure 5 is an illuminance characteristic diagram of a spotlight using a conventional plano-convex lens, Figure 6 is an explanatory diagram showing spherical aberration of a conventional plano-convex lens, and Figure 7 is an explanatory diagram of the principle of dropout phenomenon in a plano-convex lens, and FIGS. 8 and 9 are explanatory diagrams of spherical aberration in various conventional aspherical plano-convex lenses.
FIG. 10 is an illuminance characteristic diagram of a spotlight using an aspheric plano-convex lens imparted with positive spherical aberration. In the figure, 1: incandescent light bulb, 2: spherical reflector, 3: plano-convex lens.
Claims (1)
、球面反射鏡と、平凸レンズからなる光学系を有
したスポツトライト用の平凸レンズであつて、レ
ンズ中心部の焦点距離を外周部の焦点距離に比較
して５〜１５％長くすると共に、外周部から中心
部への焦点距離の変化は外周部が一番短かく、中
心部へ向けて漸次長くなるようにしたことを特徴
とするスポツトライト用平凸レンズ。 (2) 上記外周部から中心部への焦点距離の変化
が略１．５乗〜３．０乗曲線によつて結ばれてい
ることを特徴とする実用新案登録請求の範囲第１
項に記載のスポツトライト用平凸レンズ。[Claims for Utility Model Registration] (1) A plano-convex lens for a spot light, which has an optical system consisting of an incandescent light bulb with a lattice-shaped filament, a spherical reflector, and a plano-convex lens; The focal length is increased by 5 to 15% compared to the focal length at the outer periphery, and the change in focal length from the outer periphery to the center is shortest at the outer periphery and gradually increases toward the center. A plano-convex lens for spot lights. (2) Utility model registration claim 1, characterized in that the change in focal length from the outer periphery to the center is connected by a curve approximately from the 1.5th power to the 3.0th power.
A plano-convex lens for spot lights as described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985174801U JPH0231926Y2 (en) | 1985-11-12 | 1985-11-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985174801U JPH0231926Y2 (en) | 1985-11-12 | 1985-11-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6282501U true JPS6282501U (en) | 1987-05-26 |
| JPH0231926Y2 JPH0231926Y2 (en) | 1990-08-29 |
Family
ID=31113527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985174801U Expired JPH0231926Y2 (en) | 1985-11-12 | 1985-11-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0231926Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH046105U (en) * | 1990-04-27 | 1992-01-21 | ||
| JP2007052957A (en) * | 2005-08-17 | 2007-03-01 | Marumo Denki Kk | LED spotlight |
| WO2016158886A1 (en) * | 2015-03-30 | 2016-10-06 | コニカミノルタ株式会社 | Lighting optical unit and lighting apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6161301A (en) * | 1984-08-30 | 1986-03-29 | 松下電工株式会社 | Flat convex lens for spot light |
-
1985
- 1985-11-12 JP JP1985174801U patent/JPH0231926Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6161301A (en) * | 1984-08-30 | 1986-03-29 | 松下電工株式会社 | Flat convex lens for spot light |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH046105U (en) * | 1990-04-27 | 1992-01-21 | ||
| JP2007052957A (en) * | 2005-08-17 | 2007-03-01 | Marumo Denki Kk | LED spotlight |
| WO2016158886A1 (en) * | 2015-03-30 | 2016-10-06 | コニカミノルタ株式会社 | Lighting optical unit and lighting apparatus |
| JPWO2016158886A1 (en) * | 2015-03-30 | 2018-03-15 | コニカミノルタ株式会社 | Optical unit for illumination and illumination device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0231926Y2 (en) | 1990-08-29 |
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