Patent ID: 11906420
Assignee: HITACHI HIGH-TECH CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 15:
16. A light source, comprising:
a first LED and a second LED that are disposed in parallel, one of the first LED and the second LED emitting ultraviolet light, the second LED having a light emission spectrum different from that of the first LED;
a reflection surface that is opposite to the first LED and reflects light of the first LED; and
a dichroic surface that is opposite to the second LED, reflects light of the first LED, and allows light of the second LED to penetrate,
wherein the other of the first LED and the second LED is a white color LED whose main emission light is not ultraviolet light, and
wherein a filter member is disposed so as to be opposite to a light emission surface of the white color LED, penetration efficiency with respect to ultraviolet light of the filter member being lower than penetration efficiency with respect to light having longer wavelength compared to the ultraviolet light.