GB428459A - A television optical system for increasing the number of scanning strips obtained from a mirror drum for transmission or reception - Google Patents

A television optical system for increasing the number of scanning strips obtained from a mirror drum for transmission or reception

Info

Publication number
GB428459A
GB428459A GB3119433A GB3119433A GB428459A GB 428459 A GB428459 A GB 428459A GB 3119433 A GB3119433 A GB 3119433A GB 3119433 A GB3119433 A GB 3119433A GB 428459 A GB428459 A GB 428459A
Authority
GB
United Kingdom
Prior art keywords
spec
prov
lenses
mirrors
mirror
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
GB3119433A
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.)
HAROLD ALFRED RICHARDSON
Original Assignee
HAROLD ALFRED RICHARDSON
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 HAROLD ALFRED RICHARDSON filed Critical HAROLD ALFRED RICHARDSON
Publication of GB428459A publication Critical patent/GB428459A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
    • H04N3/08—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Road Signs Or Road Markings (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

428,459. Television. RICHARDSON, H. A., Darley House, Marlboro Road, Buxton, Derbyshire. Nov. 9, 1933, Nos. 31194/33, 766/34, and 7237/34. [Class 40 (iii)] In a scanning system, a beam of light is traversed across a series of reflecting concave or convex surfaces or refracting surfaces to produce a series of scanning lines which are correctly located on the screen by individual reflectors or refractors. A mirror drum MD, (Fig. 1, Prov. Spec. 766 /34), traverses a beam of light over lenses L1 .... L8 and plane mirrors M1 ... M8 correctly locate the strips on the screen SC. The mirror drum MD has its mirrors inclined at different angles, so that the total number of scanning strips produced is the number of lenses L1 ... L8 multiplied by the number of mirrors on the drum. The mirrors M, MC may be dispensed with, (Fig. 7, Prov. Spec. 7237/34 and Figs. 1, 2, Prov. Spec. 31194/33, not shown), or replaced by a concave mirror behind the drum MD, (Fig. 10, Prov. Spec. 7237/34, not shown). Synchronizing impulses may be produced by apertured screens suitably placed, e.g. before the lenses L1 .... L8, (Fig. 6, Prov. Spec. 31194/33, not shown). The convex lenses L1 ... L8 may be replaced by concave lenses, (Fig. 2, Prov. Spec. 7237/34, not shown and Fig. 11, Comp. Spec., not shown) ; by concave mirrors, (Figs. 3, 9, Prov. Spec. 7237 /34, not shown), by convex mirrors, (Fig. 4, Prov. Spec. 7237/34, not shown) ; by prisms (Figs. 1 ... 4, Comp. Spec., not shown) ; or by combinations of lenses and prisms, (Figs. 5, 6, 11, 12, Prov. Spec. 7237/34, not shown). A rotating mirror may replace the mirror drum, the lenses L1 ... L8 being arranged in a circle round the mirror, (Fig. 8, Prov. Spec. 7237/34, not shown). The strips from the elements L1 ... L8 may be traversed over a further set of strip - generators to increase the number of scanning strips, (Figs. 6 ... 12, Comp. Spec., not shown). The elements L1 ... L8 may be arranged in a plurality of rows, the light being traversed over each row in turn by separate mirrors co-operating with one mirror drum, (Fig. 5, Comp. Spec., not shown). Reference has been directed by the Comptroller to Specifications 373,539, 373,540, and 374,564.
GB3119433A 1935-07-22 1933-11-09 A television optical system for increasing the number of scanning strips obtained from a mirror drum for transmission or reception Expired GB428459A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB712935A GB451966A (en) 1935-07-22 1935-07-22 Improvements in, or relating to scanning apparatus; for television or like systems

Publications (1)

Publication Number Publication Date
GB428459A true GB428459A (en) 1935-05-09

Family

ID=9827166

Family Applications (3)

Application Number Title Priority Date Filing Date
GB3119433A Expired GB428459A (en) 1935-07-22 1933-11-09 A television optical system for increasing the number of scanning strips obtained from a mirror drum for transmission or reception
GB712935A Expired GB451966A (en) 1935-07-22 1935-07-22 Improvements in, or relating to scanning apparatus; for television or like systems
GB971336A Expired GB452105A (en) 1935-07-22 1936-04-02 Improvements in or relating to scanning apparatus

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB712935A Expired GB451966A (en) 1935-07-22 1935-07-22 Improvements in, or relating to scanning apparatus; for television or like systems
GB971336A Expired GB452105A (en) 1935-07-22 1936-04-02 Improvements in or relating to scanning apparatus

Country Status (1)

Country Link
GB (3) GB428459A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207576A (en) * 1987-07-22 1989-02-01 Antony John Clynick Optical-mechanical scan rate multiplier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207576A (en) * 1987-07-22 1989-02-01 Antony John Clynick Optical-mechanical scan rate multiplier

Also Published As

Publication number Publication date
GB452105A (en) 1936-08-17
GB451966A (en) 1936-08-14

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