JPS64403A - Illuminating device - Google Patents

Illuminating device

Info

Publication number
JPS64403A
JPS64403A JP15449687A JP15449687A JPS64403A JP S64403 A JPS64403 A JP S64403A JP 15449687 A JP15449687 A JP 15449687A JP 15449687 A JP15449687 A JP 15449687A JP S64403 A JPS64403 A JP S64403A
Authority
JP
Japan
Prior art keywords
circuit
fluorescent lamp
luminous flux
detection signal
case
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.)
Pending
Application number
JP15449687A
Other languages
Japanese (ja)
Other versions
JPH01403A (en
Inventor
Toshiharu Arimatsu
Shigenori Hirano
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.)
Teijin Engineering Ltd
Original Assignee
Teijin Engineering 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 Teijin Engineering Ltd filed Critical Teijin Engineering Ltd
Priority to JP62-154496A priority Critical patent/JPH01403A/en
Priority claimed from JP62-154496A external-priority patent/JPH01403A/en
Publication of JPS64403A publication Critical patent/JPS64403A/en
Publication of JPH01403A publication Critical patent/JPH01403A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE: To stabilize illuminance by providing cooling means and controlling a luminous flux to a specified value while maintaining a fluorescent lamp in the controllable state of the luminous flux.
CONSTITUTION: A hermetically sealed case 11 has a transparent glass window 11a on the front face and the fluorescent lamp 1 is mounted on the side face thereof. Cooling air is circulated in the case by pipes 12. An optical sensor 21 mounted on the side wall of the case 11 detects the luminous flux of the fluorescent lamp 1 and outputs a detection signal to a control circuit 22 consisting of a differential operational amplifier. The circuit 22 outputs a control signal to a power supply circuit 23 in such a manner that the detection signal attains a set value. The circuit 23 regulates the impressed voltage of the fluorescent lamp 1 upon receipt of the control signal. A memory circuit 24 stores the value of the detection signal at the point of the time when commanded by a command circuit 25 as the set value of the circuit 22 and, therefore, the illuminance is stably controlled to the specified value simply by applying the command at the point of the time when the luminous flux stabilizes.
COPYRIGHT: (C)1989,JPO&Japio
JP62-154496A 1987-06-23 lighting equipment Pending JPH01403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-154496A JPH01403A (en) 1987-06-23 lighting equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-154496A JPH01403A (en) 1987-06-23 lighting equipment

Publications (2)

Publication Number Publication Date
JPS64403A true JPS64403A (en) 1989-01-05
JPH01403A JPH01403A (en) 1989-01-05

Family

ID=

Similar Documents

Publication Publication Date Title
GB9602002D0 (en) Control apparatus for controlling the output of a light source and lighting apparatus comprising the control apparatus
ATE137077T1 (en) INTERIOR LIGHTING CONTROL SYSTEM
EP0443083A3 (en) Display control apparatus capable of changing luminance depending on conditions of power supply circuit
EP0633711A4 (en) Power regulator of discharge lamp and variable color illumination apparatus using the regulator.
EP1284407A3 (en) Fireworks device
JPS5853184A (en) Implement built-in automatic dimmer
JPS64403A (en) Illuminating device
ATE150552T1 (en) SLIDE PROJECTOR WITH REMOTE CONTROL
EP0395259A3 (en) Temperature control system for solid state light source
AU3073992A (en) Lamp brightness control circuit with ambient light compensation
JPS5271131A (en) Circuit for radiation display use
GB1522533A (en) Apparatus for controlling the output of one or more lamps
AU1649292A (en) Process and device for adjusting the illumination and colour temperature of light emitted in a room
JPS5494775A (en) Illuminator in tunnel
JPS52131669A (en) Discharge lamp lighting device
EP0902604A3 (en) Lighting system
JPS57212425A (en) Exposure device
JPS5437537A (en) Miniature electronic apparatus
JPS54146356A (en) Apparatus for automatically controlling luminous intensity of head light
SE8702252D0 (en) DEVICE FOR REGULATING THE POWER IN A CIRCUIT
JPS5469268A (en) Emergency lamp system
JPS561924A (en) Winding display device of film
JPS52106634A (en) Driving circuit for current drive luminous display unit
DE3371733D1 (en) Equipment for the automatic switching and control of room illumination
AU2318095A (en) Heart rate synchronized infrared radiation emission device