Title:
OPTICAL PARTS USING HIGHLY ORIENTED THIN DIAMOND FILM
Document Type and Number:
Japanese Patent JPH06321691
Kind Code:
A
Abstract:
PURPOSE: To provide optical parts each using a highly oriented thin diamond film having a flat surface and very high light transmissivity, almost free from defects because polishing is not required and hardly absorbing light.
CONSTITUTION: The light transmitting part of each of the objective optical parts is made of a highly oriented thin diamond film formed by vapor phase synthesis. In this film, (100) or (111) crystal faces of diamond account for ≥50% of the surface area and the difference {Δα, Δβ, Δγ} between Eulerian angles (α, β, γ} showing the orientations of the adjacent (100) or (111) crystal faces simultaneously satisfies Δα≤10°, Δβ≤10° and Δγ≤10°.
Inventors:
NISHIMURA KOZO
KOYAMA HISASHI
KOBASHI KOJI
KOYAMA HISASHI
KOBASHI KOJI
Application Number:
JP11200093A
Publication Date:
November 22, 1994
Filing Date:
May 14, 1993
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
C30B29/04; G02B1/10; G02B1/14; (IPC1-7): C30B29/04; G02B1/10
Attorney, Agent or Firm:
Masanori Fujimaki