Title:
FORMATION OF LENS AREA, LENS AND LENS ARRAY PLATE
Document Type and Number:
Japanese Patent JP3504683
Kind Code:
B2
Abstract:
PURPOSE: To form refractive index distribution in a planar direction by fixing the photosensitive refractive index control agent in a transparent base material by irradiating the base material with laser beam having intensity distribution to provide partial difference in fixing quantity.
CONSTITUTION: When the intensity of emitted beam to the wavelength of irradiation laser beam is represented by formula (wherein I0 is the intensity of incident beam, μ is an absorptivity coefficient and d is thickness), an absorptivity coefficient is 0.4-100/mm. A transparent base material 1 contains a photosensitive refractive index control agent and shows prescribed absorptivity to irradiation laser beam. The transparent base material is formed from a compsn. prepared by combining an appropriate material consisting of a monomer, an oligomer, inorg. matter or the like with a photo-reactive substance and shows transparency to wavelength light in a case used as a lens.
Inventors:
Kiyoshi Umemoto
Tatsuya Ohsuga
Yasuo Fujimura
Masaaki Kawaguchi
Kazutaka Hara
Tatsuya Ohsuga
Yasuo Fujimura
Masaaki Kawaguchi
Kazutaka Hara
Application Number:
JP10996893A
Publication Date:
March 08, 2004
Filing Date:
April 12, 1993
Export Citation:
Assignee:
NITTO DENKO CORPORATION
International Classes:
B29D11/00; G02B1/04; G02B3/00; G02B9/00; (IPC1-7): B29D11/00; G02B1/04; G02B9/00
Domestic Patent References:
| JP5753702A | ||||
| JP61284702A | ||||
| JP3504539A | ||||
| JP4502219A |
Attorney, Agent or Firm:
Tsutomu Fujimoto