Title:
SOLAR SENSOR
Document Type and Number:
Japanese Patent JPS6363909
Kind Code:
A
Abstract:
PURPOSE:To achieve a higher accuracy of detecting the direction of the sun, by providing a cylinder lens to cancel axial interference errors due to a window glass of a linear image sensor. CONSTITUTION:A window glass 4 is used for airtight sealing and protection in front of a semiconductor chip 3 of a linear image sensor 2. A linear slit 1 transmitting light is formed perpendicular to the chip 3 in front of the sensor 2. A cylinder lens 7 is arranged in front of the slit 1 to cancel axial interference errors due to the window glass 4. The curvature of a lens 7 is so set that the sun is inclined within a plane perpendicular to a Y-Z plane and at an angle alphato the Z axis to cancel deviation of the sun on a light receiving surface of the chip 3 in matching the sun. Thus, the arrangement of the cylinder lens 7 eliminates effect of refraction of light due to the window glass 4 thereby enabling exact and highly accurate detection of the direction of the sun.
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Inventors:
NAKAMURA HIROYUKI
WAKABAYASHI YASUSHI
HAMADA HIDEO
WAKABAYASHI YASUSHI
HAMADA HIDEO
Application Number:
JP20678586A
Publication Date:
March 22, 1988
Filing Date:
September 04, 1986
Export Citation:
Assignee:
NAT SPACE DEV AGENCY
TOSHIBA CORP
TOSHIBA CORP
International Classes:
B64G1/36; G01C1/00; G01J1/02; G01S3/78; G01S3/783; (IPC1-7): B64G1/36; G01C1/00; G01J1/02; G01S3/78
Domestic Patent References:
| JPS487754A | ||||
| JPS63118507U | 1988-08-01 |
Attorney, Agent or Firm:
Takehiko Suzue