Multichannel optical sensing device

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:867330

Selkowitz, Stephen E ^[1]

---

1. Piedmont, CA

A multichannel optical sensing device is disclosed, for measuring the outr sky luminance or illuminance or the luminance or illuminance distribution in a room, comprising a plurality of light receptors, an optical shutter matrix including a plurality of liquid crystal optical shutter elements operable by electrical control signals between light transmitting and light stopping conditions, fiber optic elements connected between the receptors and the shutter elements, a microprocessor based programmable control unit for selectively supplying control signals to the optical shutter elements in a programmable sequence, a photodetector including an optical integrating spherical chamber having an input port for receiving the light from the shutter matrix and at least one detector element in the spherical chamber for producing output signals corresponding to the light, and output units for utilizing the output signals including a storage unit having a control connection to the microprocessor based programmable control unit for storing the output signals under the sequence control of the programmable control unit.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 4915500
• OSTI ID: 867330
• Country of Publication: United States
• Language: English

Related Subjects

multichannel
optical
sensing
device
disclosed
measuring
outr
sky
luminance
illuminance
distribution
comprising
plurality
light
receptors
shutter
matrix
including
liquid
crystal
elements
operable
electrical
control
signals
transmitting
stopping
conditions
fiber
optic
connected
microprocessor
based
programmable
unit
selectively
supplying
sequence
photodetector
integrating
spherical
chamber
input
receiving
detector
element
producing
output
corresponding
units
utilizing
storage
connection
storing
optical sensing
selectively supplying
output signals
control signal
fiber optic
output signal
sensing device
control signals
control unit
liquid crystal
signals corresponding
storage unit
light transmitting
detector element
photodetector including
elements connected
programmable control
sequence control
multichannel optical
optic element
optical integrating
detector including
channel optical
/356/