JPS6218907U - - Google Patents
Info
- Publication number
- JPS6218907U JPS6218907U JP10980885U JP10980885U JPS6218907U JP S6218907 U JPS6218907 U JP S6218907U JP 10980885 U JP10980885 U JP 10980885U JP 10980885 U JP10980885 U JP 10980885U JP S6218907 U JPS6218907 U JP S6218907U
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- focal point
- projector
- axis
- optical axis
- 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
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の一実施例による投光器のラ
ンプと反射板の関係を示す図、第２図は従来のラ
ンプと反射板との関係を示す図である。
１……反射板、１ａ……第１の反射面、１ｂ…
…第２の反射面、１ｃ……第３の反射面、２……
ランプ、３……ランプの光中心、Ｆ１……第１の
焦点、Ｆ２……第２の焦点。なお、図中、同一符
号は同一又は相当部分を示す。
FIG. 1 is a diagram showing the relationship between a lamp and a reflector of a projector according to an embodiment of this invention, and FIG. 2 is a diagram showing the relationship between a conventional lamp and a reflector. 1... Reflection plate, 1a... First reflective surface, 1b...
...Second reflective surface, 1c...Third reflective surface, 2...
Lamp, 3... optical center of the lamp, F 1 ... first focal point, F 2 ... second focal point. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
、反射板の形状を、ランプ奥方向からランプ光中
心を焦点とし投光器光軸を中心軸とする放物面の
第１の反射面と、この反射面に連設されランプ光
中心を第１の焦点としランプの前方に第２の焦点
とした投光器光軸を中心軸とする第２の反射面と
、この反射面の前方に連設され第２の焦点を通り
投光器光軸に平行な線を軸とし、投光器光軸を中
心軸とした第３の反射面としたことを特徴とする
投光器。 In a floodlight with a reflector surrounding the lamp, the shape of the reflector is a parabolic first reflecting surface whose focal point is the center of the lamp light from the rear direction of the lamp and whose center axis is the optical axis of the floodlight, and this reflecting surface. a second reflective surface that is connected to and has a first focal point at the center of the lamp light and a second focal point in front of the lamp and whose center axis is the optical axis of the projector; A projector characterized by having a third reflecting surface whose axis is a line passing through the focal point and parallel to the optical axis of the projector, and whose center axis is the optical axis of the projector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10980885U JPS6218907U (en) | 1985-07-18 | 1985-07-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10980885U JPS6218907U (en) | 1985-07-18 | 1985-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6218907U true JPS6218907U (en) | 1987-02-04 |
Family
ID=30988244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10980885U Pending JPS6218907U (en) | 1985-07-18 | 1985-07-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6218907U (en) |
-
1985
- 1985-07-18 JP JP10980885U patent/JPS6218907U/ja active Pending
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