JPS6468603A - Luminous flux forming device - Google Patents

Luminous flux forming device

Info

Publication number
JPS6468603A
JPS6468603A JP62227170A JP22717087A JPS6468603A JP S6468603 A JPS6468603 A JP S6468603A JP 62227170 A JP62227170 A JP 62227170A JP 22717087 A JP22717087 A JP 22717087A JP S6468603 A JPS6468603 A JP S6468603A
Authority
JP
Japan
Prior art keywords
luminous flux
reflected
spot
shaped
parallel light
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
JP62227170A
Other languages
Japanese (ja)
Other versions
JP2538611B2 (en
Inventor
Kazufumi Hirai
Nobuaki Sawa
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.)
RETEIKU KK
NEC Corp
Original Assignee
RETEIKU KK
NEC Corp
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 RETEIKU KK, NEC Corp filed Critical RETEIKU KK
Priority to JP62227170A priority Critical patent/JP2538611B2/en
Publication of JPS6468603A publication Critical patent/JPS6468603A/en
Application granted granted Critical
Publication of JP2538611B2 publication Critical patent/JP2538611B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1048—Monitoring, verifying, controlling systems and methods
    • A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radiation-Therapy Devices (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

PURPOSE:To expand the range of the angle where reflected luminous flux can be detected by providing a reflecting tape which reflects luminous flux converged into spot-shaped parallel light by modulation recursively almost in the incidence direction and photoelectric detectors which detect the reflected luminous flux. CONSTITUTION:This luminous flux forming device is equipped with a luminous flux generation source 1 which generates modulated luminous flux, a lens 2 which converges the luminous flux into spot-shaped parallel light, half-mirrors 3 and 5 which distribute the luminous flux in two directions, cylindrical lenses 4 and 6 which diffuse the reflected luminous flux into pieces of luminous flux crossing each other at right angles, a reflection mirror 7 for the luminous flux passed through the half-mirrors 3 and 5, a lens 8 which converges its reflected luminous flux into spot-shaped parallel light, the reflecting tape 13 which reflects the spot-shaped luminous flux 23 recursively, and photoelectric detectors 11 which detect its reflected luminous flux. Therefore, a patient is easily positioned with a cross-shaped intersection 25 at the time of radiation treatment or diagnosis, and the reflected luminous flux 24 from the reflecting tape 13 stuck on a plane which is not perpendicular to the luminous flux such as the noise or chin of the patient is detected at a high S/N by the photoelectric detectors 11 with the modulated luminous flux 23.
JP62227170A 1987-09-09 1987-09-09 Light flux forming device Expired - Fee Related JP2538611B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62227170A JP2538611B2 (en) 1987-09-09 1987-09-09 Light flux forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62227170A JP2538611B2 (en) 1987-09-09 1987-09-09 Light flux forming device

Publications (2)

Publication Number Publication Date
JPS6468603A true JPS6468603A (en) 1989-03-14
JP2538611B2 JP2538611B2 (en) 1996-09-25

Family

ID=16856582

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62227170A Expired - Fee Related JP2538611B2 (en) 1987-09-09 1987-09-09 Light flux forming device

Country Status (1)

Country Link
JP (1) JP2538611B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107072609A (en) * 2014-08-19 2017-08-18 皇家飞利浦有限公司 X-ray imaging device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107072609A (en) * 2014-08-19 2017-08-18 皇家飞利浦有限公司 X-ray imaging device
JP2017528202A (en) * 2014-08-19 2017-09-28 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． X-ray imaging equipment
US10420520B2 (en) 2014-08-19 2019-09-24 Koninklijke Philips N.V. X-ray imaging apparatus

Also Published As

Publication number Publication date
JP2538611B2 (en) 1996-09-25

Similar Documents

Publication Publication Date Title
ATE91554T1 (en) INDICATOR.
FR2582780B1 (en) LIGHTING DEVICE, PARTICULARLY ADJUSTABLE SCENIC PROJECTOR ACCORDING TO ALL ITS PARAMETERS
CA2004634A1 (en) Light source device
JPS5544927A (en) Smoke sensor
JPS6468603A (en) Luminous flux forming device
JPS64482A (en) Reflected light barrier device
US4657353A (en) Conical beam concentrator
JPS5633572A (en) Optical rader device
JPS5228335A (en) Optical unit
JPS51131340A (en) Optical interference filter
JPS6484119A (en) Object state detector
JPS5657030A (en) Recurrent screen
KR900016734A (en) Optical pattern detection device
JPS5622937A (en) Light scattering system smoke detector
JPS63246611A (en) Luminous flux forming apparatus
JPS5572806A (en) Contour display unit
JPS5466577A (en) Lens for automobile lamp
JPS5489756A (en) Light monitor apparatus
JPS5648050A (en) Reflected electron detector
SU1572185A1 (en) DEVICE FOR THE CONTROL OF FREQUENCY-CONTRAST CHARACTERISTICS OF OPTICAL-ELECTRONIC DEVICES
JPS6429719A (en) Interferometer
JPS5425854A (en) Focus detector
JPS62145108U (en)
JPS55109904A (en) Optical physical-value measuring instrument of penetration type
JPS5468203A (en) Detecting system of light reflecting face positions

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees