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sub miniature lamps
General
technical
Information
 
lamp
construction
 
lamp
design
characteristics
» voltage
» current consumption
and inrush current
» mean spherical candelas
» ageing
» efficacy and kelvin
» life
» dc notching and
the soret effect
» temperature
influence

General technical Information

the construction of a lamp - page 2 of 3
The correct annealing prevents the sagging of the filament, filament deformations or premature filament breakage.

Molybdenum is used for the support - if applicable - and as a mandrel when winding the filaments.

Oshino Lamps subminiature lamps are belonging to the "T" category. The letter "T" (tubular) describes a tubular glass bulb, whereas "G" would stand for a global glass bulb. The number behind the "T" indicates the diameter in 1/8 inch steps (T1 = 1/8 inch = 3.175 mm).

Oshino Lamps is using the bead seal melting method for lamp manufacturing which is superior to other methods such as butt sealing.

The advantages of the bead seal production method are:
  • The mechanical strength of the sealing avoids air leakage during the manufacturing process or in further processing of the lamp (e.g. bending of the lamp wires), as the sealing length is much larger than on butt sealing type of lamp.
  • A plain lamp end simplifies the mounting and the centering of the lamp for standard or customer specifications.
  • More volume at equal lamp length creates a better vacuum and more space for the mounting of reliable high voltage filaments.
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