LENS WITH LENS BARREL AND LIGHT SOURCE DEVICE

WIPO Patent Application WO/2023/062987

A1

As a lens barrel with a lens such that it is possible to improve a light reception amount at a light-receiving element in a configuration wherein a portion of light emitted from a light source is reflected by a half mirror and received by the light-receiving element, the present invention provides a lens with a lens barrel (100) comprising a lens (110) that is disposed on the light emission side of a light source (10), a lens barrel (120) that holds the lens (110), and a half-mirror (130) that is attached to the lens barrel (120) and that is disposed on the opposite side from the light source (10) relative to the lens (110), wherein: the lens (110) has a first lens surface (111) on the light source (10) side, and a second lens surface (112) on the half mirror (130) side; and a light concentration part (200) that concentrates, toward the light source (10) side, light which has been reflected by the half mirror (130) and re-transmitted through the lens (110), is provided to a region in the first lens surface (111) outside of an effective range that transmits the light from the light source (10).

HARUYAMA HIROTERU (JP)
OGATA JUNYA (JP)
NAMBA HIRONORI (JP)

PCT/JP2022/033726

April 20, 2023

September 08, 2022

Click for automatic bibliography generation  

ALPS ALPINE CO LTD (JP)

H01L31/12; G02B7/02; G11B7/1372

JP2005274678A	2005-10-06
JP2001273661A	2001-10-05
JP2009282222A	2009-12-03
JP2003132580A	2003-05-09
JP2009004525A	2009-01-08
JPH0980274A	1997-03-28
JPH10312566A	1998-11-24
US6243508B1	2001-06-05

OKUBO, Katsuyuki (JP)

View/Download PDF      PDF Help

Previous Patent: METHOD FOR PRODUCING COBALT SULFATE CRYSTAL

Next Patent: BOILER AND CO2 RECOVERY METHOD