JPH04107507A - Plane light source unit - Google Patents

Plane light source unit

Info

Publication number
JPH04107507A
JPH04107507A JP22707090A JP22707090A JPH04107507A JP H04107507 A JPH04107507 A JP H04107507A JP 22707090 A JP22707090 A JP 22707090A JP 22707090 A JP22707090 A JP 22707090A JP H04107507 A JPH04107507 A JP H04107507A
Authority
JP
Japan
Prior art keywords
light
light guide
guide plate
light source
surface
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
JP22707090A
Inventor
Masanori Shiozaki
Original Assignee
Hirashiro Yukiko
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 Hirashiro Yukiko filed Critical Hirashiro Yukiko
Priority to JP22707090A priority Critical patent/JPH04107507A/en
Publication of JPH04107507A publication Critical patent/JPH04107507A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To irradiate a surface uniformly without any irregularity in brightness by forming plural recessed grooves which guide light from a light source in the reflecting-body side bottom surface of a light guide plate on the sides of the light source arrangement surface and opposite surface.
CONSTITUTION: Light guides 8 formed of air layers are partitioned in the recessed grooves 7 of the light guide plate 2 to form two media which are the light guides 8 in the light guide plate 2 and recessed grooves 7. The light from the light source 5 while propagated in the light guide 2 is refracted or reflected in the light guides 8 of the air layers wherein the light is hard to attenuate and distributed into the light guide plate 2, and the light reaches points in the light guide plates 2 at distances from the light source 5, travels around in the light guide plate 2, and further enters a light diffusion plate 3. Consequently, the surface can be irradiated uniformly without any brightness irregularity.
COPYRIGHT: (C)1992,JPO&Japio
JP22707090A 1990-08-29 1990-08-29 Plane light source unit Pending JPH04107507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22707090A JPH04107507A (en) 1990-08-29 1990-08-29 Plane light source unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22707090A JPH04107507A (en) 1990-08-29 1990-08-29 Plane light source unit

Publications (1)

Publication Number Publication Date
JPH04107507A true JPH04107507A (en) 1992-04-09

Family

ID=16855059

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22707090A Pending JPH04107507A (en) 1990-08-29 1990-08-29 Plane light source unit

Country Status (1)

Country Link
JP (1) JPH04107507A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05341134A (en) * 1992-06-04 1993-12-24 Tosoh Corp Back light
JPH0794008A (en) * 1993-09-24 1995-04-07 Chiyatani Sangyo Kk Flat lighting device
JPH07168025A (en) * 1993-12-13 1995-07-04 Nec Corp Flat light source apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05341134A (en) * 1992-06-04 1993-12-24 Tosoh Corp Back light
JPH0794008A (en) * 1993-09-24 1995-04-07 Chiyatani Sangyo Kk Flat lighting device
JPH07168025A (en) * 1993-12-13 1995-07-04 Nec Corp Flat light source apparatus

Similar Documents

Publication Publication Date Title
TW539873B (en) Light guide plate, surface light source device and display device
TW350886B (en) An apparatus and process for producing a corrugated web and an absorbent article comprising a corrugated web
TWI226480B (en) Surface light source equipment, image display, and light guide plate
CN100394273C (en) Area source device, producing method and apparatus thereof
TW350822B (en) Light emitting panel assemblies for use in automotive applications and the like
MX9301100A (en) Nonstick surface contour strip processing apparatus fotografico.
JPS6457206A (en) Surface lighting apparatus
SG51884G (en) Collimated light beam source
EP0392863A3 (en) Backlight
JPS63314795A (en) Film type el element
TW331593B (en) Planer light source device and light guide plate
EP0355064A3 (en) Back lighting device for a liquid crystal panel
JPS6043601A (en) Illuminating device
SE7701268A (en) Seen and apparatus for bestemning of edelstenars quality
JPH02228689A (en) Backlighting display device
JPS57174803A (en) Surface light source device
SE8302275L (en) Gassperr
JPS5712352A (en) Light diffusion device
TW448315B (en) Light guide plate and manufacturing method thereof
EP0273311A3 (en) Lighting apparatus and method
EP1688665A4 (en) Surface light source device and apparatus using this device
TW363146B (en) An anti-reflective layer and a method of forming a photoresist pattern
JPS59204815A (en) Averaging lens of illuminance for illumination
CA2030674A1 (en) Disinfecting a fluid with ultraviolet radiation
SE503348C2 (en) Measuring device for measuring one or more properties, such as thickness and tension profile, of a thin object