GB1376106A - System for detecting the presence in a field of fiew of a preselected object - Google Patents

System for detecting the presence in a field of fiew of a preselected object

Info

Publication number
GB1376106A
GB1376106A GB5065470A GB5065470A GB1376106A GB 1376106 A GB1376106 A GB 1376106A GB 5065470 A GB5065470 A GB 5065470A GB 5065470 A GB5065470 A GB 5065470A GB 1376106 A GB1376106 A GB 1376106A
Authority
GB
United Kingdom
Prior art keywords
field
photo
view
detecting
corner cube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5065470A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB5065470A priority Critical patent/GB1376106A/en
Publication of GB1376106A publication Critical patent/GB1376106A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/04—Systems determining the presence of a target

Abstract

1376106 Detecting pre-selected objects DEFENCE SECRETARY OF STATE FOR 24 Jan 1972 [26 Oct 1970] 50654/70 Heading G1A A system for detecting the presence of a pre-selected object 24, Fig. 2, having a corner cube retro reflector 12 comprises a source of light 9, a curved reflector 10, a pair of concave mirrors 15 and 16 and associated photo-cells 18 and 19 positioned as shown so that when the object 24 is illuminated by the beam one photo-cell 18 has a field of view which includes the radiation reflected from the corner cube, and the other photo-cell 19 has a field of view which substantially excludes the "corner cube" radiation, the fields of view otherwise being substantially the same. The photo-cells 18 and 19 are connected to a differential amplifier 21 so that a signal output may be used to operate an audio or visual display when the object is within the field of view of the photocell 18. In a further similar embodiment, Fig. 3, the two concave mirrors 15 and 16 are replaced by one concave mirror 35 and a plane mirror 36 arranged as shown. The whole apparatus may be mounted on a platform (44), Fig. 4 (not shown) which is slowly rotated.
GB5065470A 1970-10-26 1970-10-26 System for detecting the presence in a field of fiew of a preselected object Expired GB1376106A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5065470A GB1376106A (en) 1970-10-26 1970-10-26 System for detecting the presence in a field of fiew of a preselected object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5065470A GB1376106A (en) 1970-10-26 1970-10-26 System for detecting the presence in a field of fiew of a preselected object

Publications (1)

Publication Number Publication Date
GB1376106A true GB1376106A (en) 1974-12-04

Family

ID=10456816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5065470A Expired GB1376106A (en) 1970-10-26 1970-10-26 System for detecting the presence in a field of fiew of a preselected object

Country Status (1)

Country Link
GB (1) GB1376106A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2759845A1 (en) * 2013-01-28 2014-07-30 Sick Ag Optoelectronic sensor
US9285468B2 (en) 2012-07-12 2016-03-15 GM Global Technology Operations LLC Extended angular resolution in sensor arrays using secondary echoes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9285468B2 (en) 2012-07-12 2016-03-15 GM Global Technology Operations LLC Extended angular resolution in sensor arrays using secondary echoes
EP2759845A1 (en) * 2013-01-28 2014-07-30 Sick Ag Optoelectronic sensor

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee