Title:
LIGHT SCATTERING AND TRANSMITTING LIGHT SOURCE DEVICE
Document Type and Number:
Japanese Patent JP3215218
Kind Code:
B2
Abstract:
PURPOSE: To provide the light scattering and transmitting device which is simple in construction and excellent in mass productivity and cost effectiveness and with which uniformly scattered light is obtainable.
CONSTITUTION: This light scattering and transmitting light source device 1 has a light scattering and transmitting element 2, a reflection element 4 disposed on the rear surface side thereof and a light source 3. The element 2 is composed of light scattering and transmitting body block regions Γ1 and Γ2. The respective regions Γ1, Γ1 have effective scattering irradiation parameter values E1, E2 (E1>E2). The far and near effect from the light source is negated by the various intensities of scatterability if the light is made incident from the flank on the side where the ratio occupied by the region Γ2 having the weak scatterability is large. The scattered exit light having uniform intensity is thus obtd. The materials produced by a molding process including a kneading stage for different refractive index materials (polymer matrix + particulate material, different polymer blends, etc.) are used for the respective light scattering and transmitting body blocks. The angle characteristic of the scattered light intensity is changed if the front side or rear side of the light scattering and transmitting element is provided with a means for correcting the exit direction of the scattered light.
Inventors:
Yasuhiro Koike
Application Number:
JP10201193A
Publication Date:
October 02, 2001
Filing Date:
April 05, 1993
Export Citation:
Assignee:
Yasuhiro Koike
Enplus Inc.
Enplus Inc.
International Classes:
F21V8/00; G02B6/00; G02F1/1335; G02F1/13357; G09F9/00; (IPC1-7): G02F1/13357; G02B6/00; G09F9/00
Domestic Patent References:
| JP5336199A | ||||
| JP6329728A | ||||
| JP743700U | ||||
| JP545601U | ||||
| JP312202U |
Attorney, Agent or Firm:
Matsumoto Takemoto (3 outside)