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US 5,042,915 AGranted
Light source apparatus for an endoscope
AssigneeKabushiki Kaisha Toshiba
InventorsHiromichi Akutsu, Sugao Hosoi
Life of this patent
Estimating the term…
Abstract
A light source apparatus comprises a light source; a lens for collecting light from the light source; a light guide for receiving the light collected by the lens; and an adjusting device disposed between the light source and the lens and adjusting the quantity of light guided to the light guide so as not to change the light distributing characteristics by a throttled amount of the light quantity.
Claims7
An endoscope apparatus, comprising:
- a light source for generating light;
- a lens means for collecting the light generated by the light source;
- light guide means for receiving the light via the lens means;
- and,
- light quantity adjusting means positioned between the light source and the lens means, for uniformly adjusting the quantity of the light conducted via the lens means to the light guide means independent of a throttled amount of light quantity, said light quantity adjusting means including;
- a plurality of throttle blades opened and closed relative to each other so as to uniformly adjust the quantity of the light transmitted from the light source to the lens means via the adjusting means, and further including a stationary portion for supporting the throttle blades, and a movable portion connected to the stationary portion through a link for sliding the throttle blades with respect to the stationary portion, the opened and closed positions of the throttle blades being adjusted by sliding the movable portion.
3 more elements
An endoscope apparatus, comprising:
- a light source;
- lens means for collecting light from the light source;
- light guide means for receiving the light collected by the lens means;
- and
- light quantity adjusting means disposed between the light source and the lens means for uniformly varying the amount of light guided to the light guide means while maintaining constant the intensity distribution of the light.
2 more elements
Dependencies are inferred from the claim text.