Photography
Early 70's Technology
A few months ago I found some devices I worked on back in the early 70's. The device was a ceramic packaged device with a GaAs chip containing 64 IR LEDs. This device was used in an optical character reader machine for the banking industry.
IR LED device mounted on PCB:

IR LED device before mounting on PCB:


IR LED device without lens:

IR LED device showing GaAs chip with 1mil (0.001") diameter gold wirebonds:
IR LED device mounted on PCB:

IR LED device before mounting on PCB:


IR LED device without lens:

IR LED device showing GaAs chip with 1mil (0.001") diameter gold wirebonds:
Thanks guys 
Nice pics Takeda, .....thank god for high speed

Nice pics Takeda, .....thank god for high speed
200mm f/2.0 VRII Arrived Last Week
Today has been my first chance to take photos of this lens:
It arrived in a very plain cardboard box:
1

2

3

4

5

6

Front element compared to 85mm f/1.4D (77mm):
7

8

9

10

11

12

13
























