Illumination device and vision measuring instrument

Details Illumination device and vision measuring instrument Illumination device and vision measuring instrument

2008-02-15

2011-10-11

Sawhney, Hargobind (Department: 2885)

Illumination

Photographic lighting

Including specific light modifier

C362S575000, C362S346000, C362S280000, C362S572000, C362S298000, C359S385000, C359S633000, C359S212100, C353S064000

Reexamination Certificate

active

08033673

ABSTRACT:
A light source (110) is fixed at a position and emits light in a direction away from an optical axis (A) of an objective lens. An outer reflecting mirror (an optical member) (130) and an inner reflecting mirror (an optical member) (140) are provided as a unit so that relative positions thereof are fixed. A reflecting mirror unit (120) can be moved in directions along the optical axis (A), i.e. up and down relative to the light source (110). A free-form curved surface portion (131) of the outer reflecting mirror (130) and a reflecting surface of the inner reflecting mirror (140) reflect light in different directions depending on a position of the light incident thereon.

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English language Abstract of JP 2000-076904.
English language Abstract of JP 11-242162.
English language Abstract of JP 10-054940.
English language Abstract of JP 6-186482, Jul. 8, 1994.
English language Abstract of JP 2001-125000, May 11, 2001.
English language Abstract of JP 6-180427, Jun. 28, 1994.

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