JPS57114135A - X-ray stop-down device - Google Patents

X-ray stop-down device

Info

Publication number
JPS57114135A
JPS57114135A JP69281A JP69281A JPS57114135A JP S57114135 A JPS57114135 A JP S57114135A JP 69281 A JP69281 A JP 69281A JP 69281 A JP69281 A JP 69281A JP S57114135 A JPS57114135 A JP S57114135A
Authority
JP
Japan
Prior art keywords
open
ray
close
turned
transmission belts
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.)
Granted
Application number
JP69281A
Other languages
Japanese (ja)
Other versions
JPS6327678B2 (en
Inventor
Eisuke Takenouchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP69281A priority Critical patent/JPS57114135A/en
Publication of JPS57114135A publication Critical patent/JPS57114135A/en
Publication of JPS6327678B2 publication Critical patent/JPS6327678B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radiography Using Non-Light Waves (AREA)

Abstract

PURPOSE:To eliminate the undesired exposure of X rays even for oblique photographing, by securing a symmetrical and asymmetrical open/close operation to the center line of the X-ray flux with two sets of diaphragm blades respectively. CONSTITUTION:The 1st and 2nd X-ray stop-down mechanisms 2 and 3 are incorporated into a diaphragm box 50 having a flange part 49 for attachment of an X-ray tube. Thus an X-ray stop-down device 1 is formed. When the 1st motors 5a and 5b of the mechanism 2 (shown by a 2-dot chain line) are turned, the 1st pulleys 7a and 7b of the output shafts 6a and 6b of the motors 5a and 5b are turned. Thus the 1st rotary shafts 10a and 10b are turned via transmission belts 8a and 8b. As a result, transmission belts 13a, 13b, 15a and 15b are shifted respectively to open and close diaphragm blades 21a, 21b, 22a and 22b fixed to the above-mentioned transmission belts respectively toward arrows X and X' in accordance with each open/close ratio. In this case, the blades 21a/21b and 22a/22b are opened/closed asymmetrically to the center point C of the X-ray flux, and this open/close ratio is controlled by potentiometers 24a and 24b.
JP69281A 1981-01-08 1981-01-08 X-ray stop-down device Granted JPS57114135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP69281A JPS57114135A (en) 1981-01-08 1981-01-08 X-ray stop-down device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP69281A JPS57114135A (en) 1981-01-08 1981-01-08 X-ray stop-down device

Publications (2)

Publication Number Publication Date
JPS57114135A true JPS57114135A (en) 1982-07-15
JPS6327678B2 JPS6327678B2 (en) 1988-06-03

Family

ID=11480802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP69281A Granted JPS57114135A (en) 1981-01-08 1981-01-08 X-ray stop-down device

Country Status (1)

Country Link
JP (1) JPS57114135A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6197750U (en) * 1984-12-01 1986-06-23

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4959474U (en) * 1972-08-30 1974-05-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4959474U (en) * 1972-08-30 1974-05-25

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6197750U (en) * 1984-12-01 1986-06-23
JPH0514238Y2 (en) * 1984-12-01 1993-04-15

Also Published As

Publication number Publication date
JPS6327678B2 (en) 1988-06-03

Similar Documents

Publication Publication Date Title
JPS55103545A (en) Motor driven camera
JPS5774703A (en) Aperture structure of zoom lens for facsimile
JPS57114135A (en) X-ray stop-down device
JPS5285493A (en) X-ray photographing device
JPS5738465A (en) Variable magnification type copier
JPS5773729A (en) Single-lens reflex camera incorporated with driving motor
JPS5574524A (en) Cord type focusing device
JPS53129036A (en) Color photographic material
JPS5737367A (en) Optical device of original moving type copying machine
JPS55103544A (en) Driving power transmitting device of motor driven camera
JPS5390926A (en) Shutter mechanism
JPS57212451A (en) Print-off method of positive ps plate
JPS57161730A (en) Shutter with correcting mechanism for exposure time
JPS5676200A (en) X-ray intermittent exposure device
JPS57111523A (en) Mirror mechanism of single-lens reflex camera
JPS52143014A (en) Lens convertible camera
SE8306051D0 (en) CLOSELY GAMES
JPS55108613A (en) Optical low-pass filter
JPS57157232A (en) Film winding and rewinding device for camera
JPS57190969A (en) Converter of magnification ratio of variable magnification copying machine
GB931805A (en) Improvements in or relating to film drive mechanism for photographic cameras
JPS5336456A (en) Exposure correction lens
JPS5543517A (en) Photo detecting aperture interlocking type program shutter
JPS5781247A (en) Moving photographing method with slit camera
JPS5397436A (en) Scanning exposure system transfer type electrophotographic copying machine