Lamp caps
Typical caps used on the Photographic lamps listed in this catalogue are shown below along with their IEC codes and normal names or common abbreviations. The IEC codes are used in the majority of table entries. Note that the illustrations are not to scale.
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| R7s |
| G6.35 GY6.35 | 5.5 mm | GY5.3 (Flat pins) | GX5.3 (Round pins) | 2 button | GY9.5 GZ9.5 | ||||||||
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| GZ6.35 |
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Double Contact |
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Medium Ring | G7.9 (std. volts) | GX7.9 (Low volts) | Ferrule Contact | E39 | P40s | G17q GX17q |
G22 | Small Indexing Ring | E26 | P28/25 | E12/15 | BA15d | BA15s | P30s P30d | Large Indexing Ring |
| (Ring is a full circle) |
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| (Ring is flat opposite pin) |
Lamp Comparison and Construction
Lamps for Ellipsoidal Spotlights
A problem is encountered with some ellipsoidal spotlight luminaires due to the fact that a portion of the reflected beam of light is directed onto the cap of the lamp designed for Fresnel fittings. This leads to overheating of the cap and seal which may result in premature lamp failure.
GE have therefore designed lamps intended for use in ellipsoidal spotlights where the size of the cap has been reduced and the neck length correspondingly increased, thus removing the critical seal area from the reflected radiation and ensuring that optimum lamp life is obtained.
Linear and ‘U’ Lamps - for Studio Lighting 3200K
Whilst a comprehensive selection of lamps for spotlight fittings is important to the lighting director, of almost equal importance is a range suitable for the many different fittings now on the market which use tungsten halogen lamps of tubular construction. GE believe their range gives a wide choice and is unmatched in performance and reliability.
98 GE LIGHTING - SHOWBIZ™ ENTERTAINMENT LIGHTING CATALOGUE | GE LIGHTING - ENTERTAINMENT LIGHTING CATALOGUE | 0 | GE LIGHTING - SHOWBIZ™ ENTERTAINMENT LIGHTING CATALOGUE 99 |
