Deuterium lamp box and portable light source apparatus

• US 20020060909A1
• Filed: 01/14/2002
• Published: 05/23/2002
• Est. Priority Date: 07/16/1999
• Status: Active Grant

• Current Assignee: Hamamatsu Photonics KK
• Original Assignee: Hamamatsu Photonics KK
• Inventors: Ito, Masaki, Sei, Yujiro
• Granted Patent: US 6,601,972 B2
• Time in Patent Office: Days
• US Class Current: 362/236
• CPC Class Codes: F21L 14/00 Electric lighting devices without a self-contained power source, e.g. for mains connection
• CPC Class Codes: F21L 14/023 having two or more, or different light sources
• CPC Class Codes: G01J 1/08 Arrangements of light sources specially adapted for photometry standard sources, also using luminescent or radioactive material
• CPC Class Codes: G01J 3/10 Arrangements of light sources specially adapted for spectrometry or colorimetry

Abstract

In a deuterium lamp box in accordance with the present invention, a wavelength of light different from that of a deuterium lamp can be forwardly let out from a light exit opening. Namely, when the deuterium lamp of a see-through type is lit, the light generated from the deuterium lamp can be let out from the light exit opening. When a second lamp is lit while the deuterium lamp is turned off, the light generated from the second lamp 85 passes through the deuterium lamp while in a state collected by a lens, and is let out from the light exit opening. When the deuterium lamp and the second lamp are lit at the same time, different wavelengths of light are let out from the light exit opening while in a mixed state. Thus, three kinds of light can be made depending on how the lamps are lit, whereby this lamp box is considered to have a versatility much higher than that of a lamp box accommodating only one lamp.

Claims

1. A deuterium lamp box comprising a lamp accommodating body for inserting a deuterium lamp therein, said deuterium lamp accommodating body having a light exit opening for forwardly letting out light emitted from said deuterium lamp and a light entrance opening opposing said light exit opening;

a condenser lens disposed on said light entrance opening side on an optical axis passing said light exit opening and said light entrance opening; and

a second lamp disposed behind said light entrance opening on said optical axis.

2. A deuterium lamp box according to claim 1, wherein a lamp house in which said condenser lens and said second lamp are disposed in front and rear parts, respectively, is made detachable with respect to said lamp accommodating body.

3. A deuterium lamp box according to claim 1, wherein said condenser lens is disposed in said lamp accommodating body, wherein said second lamp is disposed in a lamp house, and wherein said lamp house is made detachable with respect to said lamp accommodating body.

4. A deuterium lamp box according to claim 1, wherein said lamp accommodating body is integrally formed with an optical passage extending outward from said light entrance opening, and wherein said condenser lens and said second lens are disposed in front and rear parts of said optical passage, respectively.

5. A deuterium lamp box according to claim 1, wherein said lamp is made insertable with respect to a lamp insertion port formed on said optical axis.

6. A deuterium lamp box according to claim 1, wherein said condenser lens is disposed on said light exit opening side on said optical axis.

7. A deuterium lamp box according to claim 1, wherein said deuterium lamp is of a see-through type which emits light forward and forwardly passes therethrough light incident thereon from behind.

8. A portable light source apparatus including a lamp box, secured within a housing, for accommodating a deuterium lamp generating a predetermined wavelength of light;

and a power unit, secured within said housing, for driving said deuterium lamp;

wherein said lamp box comprises a lamp accommodating body for inserting a deuterium lamp therein, said deuterium lamp accommodating body having a light exit opening for forwardly letting out light emitted from said deuterium lamp and a light entrance opening opposing said light exit opening;

a condenser lens disposed on said light entrance opening side on an optical axis passing said light exit opening and said light entrance opening; and

a second lamp disposed behind said light entrance opening on said optical axis.

9. A portable light source apparatus according to claim 8, having a light guide tube secured to said lamp box so as to extend said light exit opening of said lamp box, and said condenser lens disposed within said light exit opening of said lamp box and held and secured between said light guide tube and said lamp accommodating body.

10. A portable light source apparatus according to claim 8, wherein said deuterium lamp is of a see-through type which emits light forward and forwardly passes therethrough light incident thereon from behind.