Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With housing or contact structure
Patent
1995-06-05
1997-03-25
Crane, Sara W.
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With housing or contact structure
257100, 257796, 372 36, 372 98, 362368, 362373, H01C 3300, H01C 2328
Patent
active
056147350
ABSTRACT:
A lead frame 32 has projecting portions 36, 37 projecting in a right-and-left direction, like arms, from the sides of its broad end portion 32a. The projecting piece portions 36, 37 include mold region parts 36a, 37a that are molded within a flat type sealing resin member 35, and exposed piece portions 36b, 37b that are exposed to the outside from the sealing resin member 35. One of the exposed parts, 36b, has an arcuate segment 36c inscribed in a hypothetical circle drawn with radius R about the point of light emission, C, on an LD chip 1. The other exposed part 37b has an arcuate segment 37c inscribed in the hypothetical circle drawn with radius R. A semiconductor laser device having these arcuate segments can be fitted into a stepped accommodating hole of an instrument and set in place there, just as can a can type semiconductor laser device. The point of light emission, C, on the LD chip 1 is also fixed. Thus, neither a shift in the point of light emission, C, nor the peeling of resin arises. Moreover, an annular mounting aid 48 inscribed in the hypothetical circle drawn with radius R can be attached, instead of the arcuate segments 36c, 37c, to the exposed parts 36b, 37b, whereby the same effects can be obtained.
REFERENCES:
patent: 4157486 (1979-06-01), Fegley
patent: 5266817 (1993-11-01), Lin
patent: 5270555 (1993-12-01), Ito et al.
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patent: 5384471 (1995-01-01), Schairer et al.
patent: 5444726 (1995-08-01), Kitamura et al.
Kitamura Shoji
Nagano Satoru
Oguri Katsumi
Shindo Yoichi
Crane Sara W.
Fuji Electric & Co., Ltd.
Ostrowski David
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